feat(cmat): add cmake build for course material

Add a CMakeLists.txt to each exercise directory, included from
cmat/CMakeLists.txt, so every exercise and solution becomes a buildable
target. GUI exercises link the curses-based DOS_Unix implementations on
Unix-like systems; the Windows-specific DOS variants are not compiled.
Exercises without a portable path or with missing dependencies (Boost)
are reported as not available at configure time.

Targets are excluded from the default build and built by name, e.g.
`cmake --build build --target Ex11`, so intentionally buggy exercises
such as Ex21 do not break the default build.

Also fix two portability issues: rename Ex11bug/pole.h to Pole.h for
case-sensitive filesystems and drop the extra Light:: qualification in
SolutionEx71A/Light.h. Document build commands and layout in AGENTS.md.

Co-authored-by: Qwen 3.8 27B <qwen3.8_27b-q3_k_xl@lmstudio.local>

AGENTS.md

@@ -10,8 +10,22 @@ is added, document its layout under "Source Layout".
 
 ## Build System
 
-No build system is set up yet. When one is added for the course examples,
-document its configure, build, and test commands here.
+CMake (3.21+) with Ninja.
+
+```sh
+cmake -B build -G Ninja
+cmake --build build
+```
+
+Course exercises in `cmat/` are excluded from the default build; build one by
+target name, e.g.:
+
+```sh
+cmake --build build --target Ex11
+```
+
+Tests (optional): configure with `-DBUILD_TESTING=ON`, then run `ninja check` in
+the build directory.
 
 ## Coding Conventions
 
@@ -98,10 +112,25 @@ cppcourse/
   README.md         # Project docs
   .oxfmtrc.json     # oxfmt config
   .agents/          # Agent skills (git workflow)
+  CMakeLists.txt    # Build system entry point
+  deps/             # CMake helper modules (platform, flags, Find* deps)
+  cmat/             # Course material: exercises and solutions
+  397/              # Original copy of the course material (reference only)
 ```
 
-Course content (lectures, exercises, examples) will be added as the course is
-developed. Document the layout here when it takes shape.
+`cmat/` layout:
+
+- `Ex*/`: exercise starting points. Some intentionally contain bugs that
+  students fix during the course; their targets fail to compile (or misbehave at
+  runtime) until fixed.
+- `SolutionEx*/`: working solutions of the exercises.
+- `DOS_Unix/`: platform Keyboard/Screen implementations shared by the GUI
+  exercises. The DOS variants are Windows-specific; on Unix-like systems the
+  curses variants are built instead (linked as the `dos_unix` library).
+- Each exercise directory holds a `CMakeLists.txt` that defines its target via
+  `cmat_add_exercise()` (see `cmat/CMakeLists.txt`). Exercises that need a
+  missing dependency (e.g. Boost) are reported as not available at configure
+  time and skipped.
 
 ## Behavioral Guidelines
 

CMakeLists.txt

@@ -22,6 +22,9 @@ target_compile_options(hello PRIVATE ${BASE_OPTIONS})
 target_compile_definitions(hello PRIVATE ${BASE_DEFINITIONS})
 target_link_libraries(hello PRIVATE fmt::fmt)
 
+# Course material (exercises and solutions)
+add_subdirectory(cmat)
+
 option(BUILD_TESTING OFF "Build Unity/CMock test suites")
 if (BUILD_TESTING AND NOT IS_EMSCRIPTEN)
     set(CMAKE_SKIP_TEST_ALL_DEPENDENCY FALSE)

cmat/CMakeLists.txt

@@ -0,0 +1,145 @@
+# ==============================================================================
+# Course Material (cmat)
+# ==============================================================================
+# Exercises copied from 397. Each exercise directory holds its own
+# CMakeLists.txt (included below) and defines one executable target with the
+# directory's name via cmat_add_exercise().
+#
+# Targets are excluded from the default build; build one by name:
+#   cmake --build build --target Ex11
+#
+# Some exercises intentionally contain bugs that students fix during the
+# course. Those targets fail to compile (or misbehave at runtime) until the
+# bug is fixed, which is expected.
+
+# ------------------------------------------------------------------------------
+# Compile options
+# ------------------------------------------------------------------------------
+# Legacy course material: keep the project's warning flags but drop -Werror;
+# these old sources produce warnings that must not block the build.
+set(CMAT_OPTIONS "")
+foreach (opt IN LISTS BASE_OPTIONS)
+    if (NOT opt STREQUAL "-Werror" AND NOT opt STREQUAL "/WX")
+        list(APPEND CMAT_OPTIONS "${opt}")
+    endif()
+endforeach()
+
+# ------------------------------------------------------------------------------
+# Keyboard/Screen support (DOS_Unix/)
+# ------------------------------------------------------------------------------
+# GUI exercises use the Keyboard/Screen abstraction from DOS_Unix/. The DOS
+# variants (Keyboard_DOS.cpp, Screen_DOS.cpp) are Windows-specific and are not
+# compiled. On Unix-like systems the curses variants provide the same
+# interface instead.
+
+set(CMAT_GUI_LIB "")
+if (IS_LINUX OR IS_MACOS)
+    find_package(Curses QUIET)
+    if (Curses_FOUND)
+        add_library(dos_unix STATIC
+            DOS_Unix/CursesObj.cpp
+            DOS_Unix/Keyboard_Unix.cpp
+            DOS_Unix/Screen_Unix.cpp
+        )
+        set_target_properties(dos_unix PROPERTIES EXCLUDE_FROM_ALL TRUE)
+        target_include_directories(dos_unix PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/DOS_Unix")
+        if (CURSES_INCLUDE_DIRS)
+            target_include_directories(dos_unix SYSTEM PUBLIC ${CURSES_INCLUDE_DIRS})
+        endif()
+        target_link_libraries(dos_unix PUBLIC ${CURSES_LIBRARIES})
+        set(CMAT_GUI_LIB dos_unix)
+    else()
+        message(STATUS "Curses not found; GUI exercises are unavailable")
+    endif()
+else()
+    # Windows: only the DOS keyboard/screen implementations exist, which are
+    # Windows-specific; there is nothing portable to build with.
+endif()
+
+# Exercises using Boost.Serialization (system install; not fetched). CONFIG
+# mode uses Boost's own CMake package, since the FindBoost module was removed
+# in CMake 4.
+find_package(Boost CONFIG QUIET COMPONENTS serialization)
+
+# ------------------------------------------------------------------------------
+# Target helpers
+# ------------------------------------------------------------------------------
+# cmat_add_exercise(<name> [GUI] [BOOST] <sources>...)
+#
+# Creates an executable target from the given sources. GUI links the
+# Keyboard/Screen support library; BOOST links Boost.Serialization. If a
+# required dependency is missing, the exercise is reported as not available
+# and no target is created.
+function(cmat_add_exercise name)
+    cmake_parse_arguments(ARG "GUI;BOOST" "" "SOURCES" ${ARGN})
+    if (ARG_GUI AND NOT CMAT_GUI_LIB)
+        cmat_unavailable(${name} "requires the Keyboard/Screen abstraction, which is Windows-specific (DOS_Unix/)")
+        return()
+    endif()
+    if (ARG_BOOST AND NOT Boost_FOUND)
+        cmat_unavailable(${name} "requires Boost.Serialization")
+        return()
+    endif()
+    add_executable(${name} ${ARG_SOURCES})
+    target_compile_features(${name} PRIVATE cxx_std_23)
+    target_compile_options(${name} PRIVATE ${CMAT_OPTIONS})
+    set_target_properties(${name} PROPERTIES EXCLUDE_FROM_ALL TRUE)
+    if (ARG_GUI)
+        target_link_libraries(${name} PRIVATE ${CMAT_GUI_LIB})
+    endif()
+    if (ARG_BOOST)
+        target_link_libraries(${name} PRIVATE Boost::serialization)
+    endif()
+endfunction()
+
+# cmat_unavailable(<name> <reason>)
+#
+# Reports that an exercise cannot be built on this platform. A warning (not a
+# hard error) is used so the configuration completes and all other exercises
+# remain available.
+function(cmat_unavailable name reason)
+    message(WARNING "Exercise ${name} is not available on this platform: ${reason}")
+endfunction()
+
+# ------------------------------------------------------------------------------
+# Exercises
+# ------------------------------------------------------------------------------
+add_subdirectory(Ex11)
+add_subdirectory(Ex11bug)
+add_subdirectory(Ex21)
+add_subdirectory(Ex22)
+add_subdirectory(Ex31)
+add_subdirectory(Ex32)
+add_subdirectory(Ex33)
+add_subdirectory(Ex41)
+add_subdirectory(Ex42)
+add_subdirectory(Ex51)
+add_subdirectory(Ex61)
+add_subdirectory(Ex62)
+add_subdirectory(Ex71)
+add_subdirectory(Ex71A)
+add_subdirectory(SolutionEx11bug)
+add_subdirectory(SolutionEx21)
+add_subdirectory(SolutionEx22)
+add_subdirectory(SolutionEx22Bonus)
+add_subdirectory(SolutionEx31)
+add_subdirectory(SolutionEx31Bonus)
+add_subdirectory(SolutionEx32)
+add_subdirectory(SolutionEx33)
+add_subdirectory(SolutionEx33Bonus)
+add_subdirectory(SolutionEx41)
+add_subdirectory(SolutionEx41Bonus)
+add_subdirectory(SolutionEx42)
+add_subdirectory(SolutionEx51)
+add_subdirectory(SolutionEx51Bonus2)
+add_subdirectory(SolutionEx61InterimSolution)
+add_subdirectory(SolutionEx61Part1)
+add_subdirectory(SolutionEx61Part2)
+add_subdirectory(SolutionEx61Part2Bonus)
+add_subdirectory(SolutionEx62)
+add_subdirectory(SolutionEx62Bonus)
+add_subdirectory(SolutionEx62Bonus2)
+add_subdirectory(SolutionEx71)
+add_subdirectory(SolutionEx71A)
+add_subdirectory(SolutionEx71ABonus)
+add_subdirectory(SolutionEx71Bonus)

cmat/DOS_Unix/CursesObj.cpp

@@ -0,0 +1,51 @@
+#include "CursesObj.h"
+#include "curses.h"
+
+CursesObj::CursesObj() {
+    //  Colours 0 to 7 are defined by curses. But we need grey as well
+    //  Define a suitable constant here (and create the colour later)
+    const int COLOR_GREY = 8;
+
+    initscr(); /* initialize the curses library */
+    nonl();    /* tell curses not to do NL->CR/NL on output */
+    cbreak();  /* take input chars one at a time, no wait for \n */
+    nodelay(stdscr, FALSE);
+    noecho(); /* echo input - in color */
+    curs_set(0);
+    intrflush(stdscr, FALSE);
+
+    if (has_colors()) {
+        start_color();
+
+        /*
+         * Simple color assignment, often all we need.  Color pair 0 cannot
+         * be redefined.  This example uses the same value for the color
+         * pair as for the foreground color, though of course that is not
+         * necessary:
+         */
+        init_pair(1, COLOR_RED, COLOR_BLACK);
+        init_pair(2, COLOR_GREEN, COLOR_BLACK);
+        init_pair(3, COLOR_YELLOW, COLOR_BLACK);
+        init_pair(4, COLOR_BLUE, COLOR_BLACK);
+        init_pair(5, COLOR_CYAN, COLOR_BLACK);
+        init_pair(6, COLOR_MAGENTA, COLOR_BLACK);
+        init_pair(7, COLOR_WHITE, COLOR_BLACK);
+
+        //  Create 'grey' and then use it as foreground colour
+        init_color(8, 1, 333, 333);
+
+        init_pair(8, COLOR_GREY, COLOR_BLACK);
+    }
+}
+
+CursesObj::~CursesObj() {
+    clear();
+    refresh();
+    endwin();
+}
+
+CursesObj &CursesObj::Instance() {
+    static CursesObj instance;
+
+    return instance;
+}

cmat/DOS_Unix/CursesObj.h

@@ -0,0 +1,13 @@
+#ifndef CURSESOBJ_H
+#define CURSESOBJ_H
+
+class CursesObj {
+  private:
+    CursesObj();
+    ~CursesObj();
+
+  public:
+    static CursesObj &Instance();
+};
+
+#endif

cmat/DOS_Unix/Keyboard.h

@@ -0,0 +1,13 @@
+#ifndef KEYBOARD_H
+#define KEYBOARD_H
+
+class Keyboard {
+  public:
+    Keyboard();
+    bool isCharAvail();
+    char getChar();
+
+  private:
+};
+
+#endif

cmat/DOS_Unix/Keyboard_DOS.cpp

@@ -0,0 +1,13 @@
+#include "Keyboard.h"
+#include <conio.h>
+
+Keyboard::Keyboard() {}
+
+bool Keyboard::isCharAvail() {
+    //  'return kbhit()' is sufficient, but Microsoft
+    //  issues a warning 'coercing int to bool' and encourages
+    //  the use of '!=0' to eliminate it
+    return _kbhit() != 0;
+}
+
+char Keyboard::getChar() { return _getch(); }

cmat/DOS_Unix/Keyboard_Unix.cpp

@@ -0,0 +1,28 @@
+#include "Keyboard.h"
+#include "CursesObj.h"
+#include "curses.h"
+
+Keyboard::Keyboard() {
+    CursesObj::Instance(); // Force initialization
+
+    nodelay(stdscr, FALSE); // Default to block on getch
+}
+
+bool Keyboard::isCharAvail() {
+    nodelay(stdscr, TRUE); // getch must not block for this polling
+
+    int c; //  DON'T make this 'char'; 'ERR' may be an 'int' - on some systems,
+           //  just like 'EOF'
+
+    bool charWaiting = (c = getch()) != ERR; //  If getch returns ERR, no char
+    //  waiting, otherwise, next char is
+    //  returned
+
+    if (charWaiting)
+        ungetch(c); //  We got a char; put it back! (We just want to know if there
+                    //  is one waiting.)
+
+    return charWaiting;
+}
+
+char Keyboard::getChar() { return getch(); }

cmat/DOS_Unix/Screen.h

@@ -0,0 +1,19 @@
+#ifndef SCREEN_H
+#define SCREEN_H
+
+#include <string>
+
+namespace Screen {
+const int BLACK = 0;
+const int GRAY = 8;   // FOREGROUND_INTENSITY;
+const int BLUE = 9;   // FOREGROUND_RED|FOREGROUND_INTENSITY
+const int GREEN = 10; // FOREGROUND_GREEN|FOREGROUND_INTENSITY;
+const int RED = 12;   // FOREGROUND_RED|FOREGROUND_INTENSITY
+const int YELLOW = RED | GREEN;
+const int WHITE = RED | GREEN | BLUE;
+const int BACKGROUND = 128; // OR (|) with the color value for gray background
+
+void write(std::string s, int x, int y, int color);
+};
+
+#endif

cmat/DOS_Unix/Screen_DOS.cpp

@@ -0,0 +1,32 @@
+#include <conio.h>
+#include <string>
+#include <windows.h>
+using std::string;
+
+#include "Screen.h"
+
+namespace {
+HANDLE hStdout = 0;
+}
+
+void Screen::write(string s, int x, int y, int color) {
+    if (hStdout == 0) {
+        hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
+    }
+
+    COORD screenPos;
+    screenPos.X = x;
+    screenPos.Y = y;
+
+    unsigned long ln;
+
+    static unsigned short attrib[80];
+
+    for (unsigned int i = 0; i < s.length(); ++i) {
+        attrib[i] = color;
+    }
+
+    WriteConsoleOutputAttribute(hStdout, attrib, s.length(), screenPos, &ln);
+
+    WriteConsoleOutputCharacter(hStdout, s.c_str(), s.length(), screenPos, &ln);
+}

cmat/DOS_Unix/Screen_Unix.cpp

@@ -0,0 +1,66 @@
+#include "Screen.h"
+#include "CursesObj.h"
+#include "curses.h"
+#include <stdio.h>
+#include <string.h>
+
+//  Forward declarations
+int ConvertColour(int);
+
+void Screen::write(std::string s, int x, int y, int color) {
+    CursesObj::Instance(); // Force initialization
+
+    if (color >= 128)
+        color -= 128; // Remove gray background  - does not work on Linux
+
+    std::string blank_str(s.length(), ' ');
+
+    mvaddstr(y, x, blank_str.c_str()); // Always draw a black
+    refresh();
+
+    if (color != Screen::BLACK) //  If colour is not black, also draw the color
+    {
+        printf("\e[%i;3%im", 0, ConvertColour(color));
+
+        fflush(stdout);
+
+        mvaddstr(y, x, s.c_str());
+        refresh();
+    }
+}
+
+typedef struct {
+    int pelio_colour;
+    int curses_color_pair;
+} Entry;
+
+// Entry null pointer
+const Entry *ENTRY_NP = (Entry *)0;
+
+typedef Entry Table[];
+
+Table ColourTable = {{Screen::GRAY, 8}, //  Display as white
+                     {Screen::BLUE, 4}, {Screen::GREEN, 2}, {Screen::RED, 1}, {Screen::YELLOW, 3}, {Screen::WHITE, 7}};
+
+const int LEN_TAB = sizeof ColourTable / sizeof ColourTable[0];
+
+const Entry *TabSearch(Table t, int nEntries, int colour) {
+    Entry *p;
+
+    for (p = t; p < t + nEntries && p->pelio_colour != colour; p++)
+        ; //  EMPTY BODY
+
+    return (p < t + nEntries) ? p : ENTRY_NP;
+}
+
+int ConvertColour(int colour) {
+    int result = 0;
+    const Entry *p;
+
+    p = TabSearch(ColourTable, LEN_TAB, colour); //  Search the table for the colour specified
+
+    if (p != ENTRY_NP)                 //  If the colour is in the table ...
+        result = p->curses_color_pair; //  ... return the 'int' for the associated
+                                       //  curses colour pair
+    return result;
+}

cmat/Ex11/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Ex11
+
+cmat_add_exercise(Ex11
+    GUI
+    SOURCES
+    Light.cpp
+    main.cpp
+    Pelican.cpp
+    PelicanTimer.cpp
+    Pole.cpp
+    Timer.cpp
+    TimerSet.cpp
+)

cmat/Ex11/Ex11.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.24720.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Ex11", "Ex11.vcxproj", "{7195CF47-386C-4BF5-988B-B47FE9177122}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x86 = Debug|x86
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{7195CF47-386C-4BF5-988B-B47FE9177122}.Debug|x86.ActiveCfg = Debug|Win32
+		{7195CF47-386C-4BF5-988B-B47FE9177122}.Debug|x86.Build.0 = Debug|Win32
+		{7195CF47-386C-4BF5-988B-B47FE9177122}.Release|x86.ActiveCfg = Release|Win32
+		{7195CF47-386C-4BF5-988B-B47FE9177122}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

cmat/Ex11/Ex11.vcproj

@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding = "Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.00"
+	Name="Ex11"
+	SccProjectName="&quot;$/Course/397/Ex11&quot;, DAAAAAAA"
+	SccLocalPath=".">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\Release"
+			IntermediateDirectory=".\Release"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				InlineFunctionExpansion="1"
+				PreprocessorDefinitions="WIN32,NDEBUG,_CONSOLE"
+				StringPooling="TRUE"
+				RuntimeLibrary="4"
+				EnableFunctionLevelLinking="TRUE"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Release/Ex11.pch"
+				AssemblerListingLocation=".\Release/"
+				ObjectFile=".\Release/"
+				ProgramDataBaseFileName=".\Release/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/MACHINE:I386"
+				AdditionalDependencies="odbc32.lib odbccp32.lib"
+				OutputFile=".\Release/Ex11.exe"
+				LinkIncremental="1"
+				SuppressStartupBanner="TRUE"
+				ProgramDatabaseFile=".\Release/Ex11.pdb"
+				SubSystem="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Release/Ex11.tlb"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\Debug"
+			IntermediateDirectory=".\Debug"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				PreprocessorDefinitions="WIN32,_DEBUG,_CONSOLE"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="5"
+				RuntimeTypeInfo="TRUE"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Debug/Ex11.pch"
+				AssemblerListingLocation=".\Debug/"
+				ObjectFile=".\Debug/"
+				ProgramDataBaseFileName=".\Debug/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"
+				DebugInformationFormat="4"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/MACHINE:I386"
+				AdditionalDependencies="odbc32.lib odbccp32.lib"
+				OutputFile=".\Debug/Ex11.exe"
+				LinkIncremental="2"
+				SuppressStartupBanner="TRUE"
+				GenerateDebugInformation="TRUE"
+				ProgramDatabaseFile=".\Debug/Ex11.pdb"
+				SubSystem="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Debug/Ex11.tlb"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+	</Configurations>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+			<File
+				RelativePath=".\Light.cpp">
+			</File>
+			<File
+				RelativePath=".\Pelican.cpp">
+			</File>
+			<File
+				RelativePath=".\PelicanTimer.cpp">
+			</File>
+			<File
+				RelativePath=".\Timer.cpp">
+			</File>
+			<File
+				RelativePath="TimerSet.cpp">
+			</File>
+			<File
+				RelativePath=".\main.cpp">
+			</File>
+			<File
+				RelativePath=".\pole.cpp">
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl">
+			<File
+				RelativePath=".\Light.h">
+			</File>
+			<File
+				RelativePath=".\Pelican.h">
+			</File>
+			<File
+				RelativePath=".\PelicanTimer.h">
+			</File>
+			<File
+				RelativePath=".\Timer.h">
+			</File>
+			<File
+				RelativePath="TimerSet.h">
+			</File>
+			<File
+				RelativePath=".\pole.h">
+			</File>
+		</Filter>
+		<Filter
+			Name="DOS_Unix"
+			Filter="">
+			<File
+				RelativePath="..\DOS_Unix\Keyboard.h">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Keyboard_DOS.cpp">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Screen.h">
+			</File>
+			<File
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+</VisualStudioProject>

cmat/Ex11/Ex11.vcxproj

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+    <ClCompile Include="TimerSet.cpp" />
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+    <ClInclude Include="PelicanTimer.h" />
+    <ClInclude Include="pole.h" />
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cmat/Ex11/Ex11.vcxproj.filters

@@ -0,0 +1,71 @@
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+      <UniqueIdentifier>{33696874-76e6-4fed-9fae-20dbad38a143}</UniqueIdentifier>
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+      <Filter>Source Files</Filter>
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+    <ClCompile Include="Pelican.cpp">
+      <Filter>Source Files</Filter>
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+      <Filter>Source Files</Filter>
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+      <Filter>Source Files</Filter>
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+      <Filter>Source Files</Filter>
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+      <Filter>Source Files</Filter>
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+      <Filter>Source Files</Filter>
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+      <Filter>DOS_Unix</Filter>
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+    <ClCompile Include="..\DOS_Unix\Keyboard_DOS.cpp">
+      <Filter>Header Files</Filter>
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+    <ClInclude Include="Light.h">
+      <Filter>Header Files</Filter>
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+    <ClInclude Include="Pelican.h">
+      <Filter>Header Files</Filter>
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+    <ClInclude Include="PelicanTimer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Timer.h">
+      <Filter>Header Files</Filter>
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+    <ClInclude Include="TimerSet.h">
+      <Filter>Header Files</Filter>
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+    <ClInclude Include="pole.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Keyboard.h">
+      <Filter>DOS_Unix</Filter>
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cmat/Ex11/Ex11.vcxproj.user

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+</Project>

cmat/Ex11/Light.cpp

@@ -0,0 +1,20 @@
+#include "Light.h"
+#include "CursesObj.h"
+#include "Pelican.h"
+#include "Screen.h"
+#include <iostream>
+
+Light::Light(std::string name, int x, int y, int color) : x(x), y(y), c(color), name(name) {}
+
+Light::~Light() {
+    std::cout << "Deleting light (" << name << ", " << x << ", " << y << ", " << c << ")" << std::endl;
+    std::cout.flush();
+}
+
+void Light::set(LightState newState) {
+    state = newState;
+    Screen::write(name.c_str(), x, y, state == FLASH ? (128 + c) : (state == OFF ? 0 : c));
+    // 128 + color was used to make a character flash (but not any more)
+}
+
+Light::LightState Light::get(void) { return state; }

cmat/Ex11/Light.h

@@ -0,0 +1,30 @@
+// ======================================================
+//
+// Represents a light, implemented as a string written
+// to a console window
+//
+// ======================================================
+
+#ifndef LIGHT_H
+#define LIGHT_H
+
+#include <string>
+
+class Light {
+  public:
+    Light(std::string name, int x, int y, int color);
+    ~Light();
+
+    enum LightState { ON, OFF, FLASH };
+
+    void set(LightState new_state);
+    LightState get(void);
+
+  private:
+    int c; // light colour
+    int x, y;
+    std::string name;
+    LightState state;
+};
+
+#endif

cmat/Ex11/Pelican.cpp

@@ -0,0 +1,64 @@
+#include "Pelican.h"
+#include "PelicanTimer.h"
+#include "Pole.h"
+
+Pelican::Pelican(int x, int y)
+    : pressed(false), RED_TIME(4), YELLOW_TIME(2), GREEN_TIME(3), FLASH_TIME(5), myPole(new Pole(x, y)),
+      state(GREEN_IDLE) {
+    myTimer = new PelicanTimer(*this, &Pelican::timerExpired);
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed());
+}
+
+Pelican::~Pelican() { delete myPole; }
+
+void Pelican::press(void) {
+    if (state == GREEN_IDLE) {
+        state = YELLOW_STATE;
+        myTimer->timeoutRequest(YELLOW_TIME);
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed());
+    } else if (state != RED_STATE) {
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed());
+    }
+}
+
+void Pelican::timerExpired(void) {
+    switch (state) {
+    case RED_STATE:
+        state = YELLOW_FLASHING;
+        myTimer->timeoutRequest(FLASH_TIME);
+        break;
+
+    case YELLOW_FLASHING:
+        state = GREEN_TIMING;
+        myTimer->timeoutRequest(GREEN_TIME);
+        break;
+
+    case GREEN_TIMING:
+        if (pressed) {
+            state = YELLOW_STATE;
+            myTimer->timeoutRequest(YELLOW_TIME);
+        } else {
+            state = GREEN_IDLE;
+        }
+        break;
+
+    case GREEN_IDLE:
+        //    should never happen
+        break;
+
+    case YELLOW_STATE:
+        state = RED_STATE;
+        pressed = false;
+        myTimer->timeoutRequest(RED_TIME);
+        break;
+    }
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed());
+}

cmat/Ex11/Pelican.h

@@ -0,0 +1,54 @@
+// ======================================================
+//
+// Represents a Pelican crossing
+//
+// ======================================================
+
+#ifndef PELICAN_H
+#define PELICAN_H
+
+class PelicanTimer;
+class Pole;
+
+class Pelican {
+  public:
+    Pelican(int x, int y);
+    ~Pelican();
+
+    // call when the WAIT button has been pressed
+    void press(void);
+
+    // states that a Pelican can be in
+    enum PelicanState { RED_STATE, YELLOW_FLASHING, GREEN_TIMING, GREEN_IDLE, YELLOW_STATE };
+
+    bool isPressed() const { return pressed; }
+
+    PelicanState getState() const { return state; }
+
+  private:
+    // state that this Pelican is in
+    PelicanState state;
+
+    // called by PeleicanTimer when the lights need to change
+    void timerExpired(void);
+
+    const unsigned int RED_TIME;
+    const unsigned int YELLOW_TIME;
+    const unsigned int GREEN_TIME;
+    const unsigned int FLASH_TIME;
+
+    // indicates whether the WAIT light should be on
+    bool pressed;
+
+    Pole *myPole;
+
+    // Timer that indicates when the lights should change
+    PelicanTimer *myTimer;
+
+  private:
+    //  prevent general use of copy ctor and operator=
+    Pelican(const Pelican &);
+    Pelican &operator=(const Pelican &);
+};
+
+#endif

cmat/Ex11/PelicanTimer.cpp

@@ -0,0 +1,10 @@
+
+#include "PelicanTimer.h"
+
+PelicanTimer::PelicanTimer(Pelican &target, TargetFunc targetFunc) : myTarget(target), myTargetFunc(targetFunc) {}
+
+void PelicanTimer::tick() {
+    if (isExpired()) {
+        (myTarget.*myTargetFunc)();
+    }
+}

cmat/Ex11/PelicanTimer.h

@@ -0,0 +1,27 @@
+// ======================================================
+//
+// This class specializes the Timer to enable it to
+// stimulate a Pelican
+//
+// ======================================================
+
+#ifndef PELICANTIMER_H
+#define PELICANTIMER_H
+
+#include "Pelican.h"
+#include "Timer.h"
+
+class PelicanTimer : public Timer {
+  public:
+    typedef void (Pelican::*TargetFunc)();
+
+    PelicanTimer(Pelican &target, TargetFunc targetFunc);
+
+    virtual void tick();
+
+  private:
+    Pelican &myTarget;
+    TargetFunc myTargetFunc;
+};
+
+#endif

cmat/Ex11/Pole.cpp

@@ -0,0 +1,59 @@
+#include "Pole.h"
+#include "Screen.h"
+
+Pole::Pole(int x, int y) : waitLight(new Light("WAIT", x + 6, y + 12, Screen::WHITE)) {
+    using namespace Screen;
+
+    lights[RED_LIGHT] = new Light("*", x + 11, y + 3, RED);
+    lights[RED_MAN] = new Light("*<-=", x + 6, y + 4, RED);
+    lights[YELLOW_LIGHT] = new Light("*", x + 11, y + 5, YELLOW);
+    lights[GREEN_LIGHT] = new Light("*", x + 11, y + 7, GREEN);
+    lights[GREEN_MAN] = new Light("*|-<", x + 6, y + 7, GREEN);
+
+    write("       _____         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |____| |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("       _||__         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("========||===========", x, ++y, GRAY);
+    write("    /   ||     /     ", x, ++y, GRAY);
+    write("_ /_________ /_      ", x, ++y, GRAY);
+    write("/          /         ", x, ++y, GRAY);
+}
+
+Pole::~Pole() {
+    for (int i = 0; i < sizeof lights / sizeof(lights[0]); ++i)
+        delete lights[i];
+    delete waitLight;
+}
+
+void Pole::setTrafficLights(Pelican::PelicanState state) {
+    static const Light::LightState LightStates[Pelican::YELLOW_STATE + 1][RED_MAN + 1] = {
+        //  red         yellow        green       green man     red man
+        {Light::ON, Light::OFF, Light::OFF, Light::ON, Light::OFF},       // red
+        {Light::OFF, Light::FLASH, Light::OFF, Light::FLASH, Light::OFF}, // y flash
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g time
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g idle
+        {Light::OFF, Light::ON, Light::OFF, Light::OFF, Light::ON}        // yellow
+    };
+
+    for (int i = RED_LIGHT; i <= RED_MAN; i++) {
+        lights[i]->set(LightStates[state][i]);
+    }
+}
+
+void Pole::setWaitLight(bool pressed) { waitLight->set(pressed ? Light::ON : Light::OFF); }

cmat/Ex11/Pole.h

@@ -0,0 +1,27 @@
+// ======================================================
+// The Pole presenting the Pelican
+// ======================================================
+
+#ifndef POLE_H
+#define POLE_H
+
+#include "Light.h"
+#include "Pelican.h"
+
+class Pole {
+  public:
+    Pole(int x, int y);
+    ~Pole();
+
+    void setTrafficLights(Pelican::PelicanState state);
+    void setWaitLight(bool pressed);
+
+  private:
+    enum LightName { RED_LIGHT, YELLOW_LIGHT, GREEN_LIGHT, GREEN_MAN, RED_MAN };
+
+    Light *lights[RED_MAN + 1];
+
+    Light *waitLight;
+};
+
+#endif

cmat/Ex11/Timer.cpp

@@ -0,0 +1,17 @@
+
+
+#include "Timer.h"
+#include "TimerSet.h"
+
+void Timer::timeoutRequest(int seconds) { timeToGo = seconds; }
+
+Timer::Timer() : timeToGo(-1) { theTimerSet.addATimer(this); }
+
+bool Timer::isExpired() {
+    if (timeToGo > 0) {
+        if (--timeToGo == 0) {
+            return true;
+        }
+    }
+    return false;
+}

cmat/Ex11/Timer.h

@@ -0,0 +1,27 @@
+// ======================================================
+//
+// A general-purpose countdown timer
+// To use this class, specialize it
+// and override tick()
+//
+// ======================================================
+
+#ifndef TIMER_H
+#define TIMER_H
+
+class Timer {
+  public:
+    Timer();
+
+    void timeoutRequest(int seconds);
+
+    virtual void tick() = 0;
+
+  protected:
+    bool isExpired();
+
+  private:
+    int timeToGo;
+};
+
+#endif

cmat/Ex11/TimerSet.cpp

@@ -0,0 +1,20 @@
+#include "TimerSet.h"
+#include "Timer.h"
+
+TimerSet theTimerSet;
+
+//  Member functions
+
+TimerSet::TimerSet() : timersInUse(0), previousTime(time(&previousTime)) {}
+
+void TimerSet::addATimer(Timer *t) { timers[timersInUse++] = t; }
+
+void TimerSet::pollAllTimers() {
+    std::time_t timeNow;
+    if (time(&timeNow) > previousTime) {
+        previousTime = timeNow;
+        for (int i = 0; i < timersInUse; ++i) {
+            timers[i]->tick();
+        }
+    }
+}

cmat/Ex11/TimerSet.h

@@ -0,0 +1,23 @@
+#ifndef TIMERSET_H
+#define TIMERSET_H
+
+#include <ctime>
+
+class Timer;
+
+class TimerSet {
+  public:
+    TimerSet();
+
+    void pollAllTimers();
+    void addATimer(Timer *);
+
+  private:
+    Timer *timers[40];
+    int timersInUse;
+    std::time_t previousTime;
+};
+
+extern TimerSet theTimerSet;
+
+#endif

cmat/Ex11/main.cpp

@@ -0,0 +1,29 @@
+
+
+#include "Keyboard.h"
+#include "Pelican.h"
+#include "TimerSet.h"
+
+#include <cctype> // provides toupper()
+
+int main() {
+    Keyboard kbd;
+    Pelican thePelican(30, 0);
+
+    char c = 0;
+
+    while (std::toupper(c) != 'Q') { // loop until 'Q' is pressed
+
+        while (!kbd.isCharAvail()) {
+            theTimerSet.pollAllTimers(); // no key press to process, poll the timers
+        }
+
+        c = kbd.getChar(); // get the character
+        if (c == ' ') {
+            // it's a space, so press the WAIT button
+            thePelican.press();
+        }
+    }
+
+    return 0;
+}

cmat/Ex11/make.mk

@@ -0,0 +1,2 @@
+BASEOBJS = \
+	Light.o main.o Pelican.o PelicanTimer.o Pole.o Timer.o TimerSet.o 

cmat/Ex11/makefile

@@ -0,0 +1,17 @@
+COMPILER = gcc
+FLAGS =  
+INCLUDES = -I/usr/local/include/c++/3.4.2 -I../DOS_Unix
+ARCHIVES = -L/usr/local/lib/gcc/sparc-sun-solaris2.7/3.4.2 -L/usr/local/lib -L/usr/lib
+UNIX_OBJS = ../DOS_Unix/CursesObj.o  ../DOS_Unix/Keyboard_Unix.o  ../DOS_Unix/Screen_Unix.o 
+
+include make.mk
+
+.SUFFIXES: .cpp .o
+
+all: pelican 
+
+.cpp.o:
+	$(COMPILER) $(INCLUDES) -frepo -c $(FLAGS) $*.cpp 
+
+pelican : $(BASEOBJS)
+	$(COMPILER) $(ARCHIVES) -o pelican -lcurses $(BASEOBJS) $(UNIX_OBJS) -lcurses -lstdc++ -static

cmat/Ex11bug/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Ex11bug
+
+cmat_add_exercise(Ex11bug
+    GUI
+    SOURCES
+    Light.cpp
+    main.cpp
+    Pelican.cpp
+    PelicanTimer.cpp
+    Pole.cpp
+    Timer.cpp
+    TimerSet.cpp
+)

cmat/Ex11bug/Ex11.sln

@@ -0,0 +1,20 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.21005.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Ex11", "Ex11.vcxproj", "{E1F2BA40-B169-8D69-78E1-868C8A785A9C}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E1F2BA40-B169-8D69-78E1-868C8A785A9C}.Debug|Win32.ActiveCfg = Debug|Win32
+		{E1F2BA40-B169-8D69-78E1-868C8A785A9C}.Debug|Win32.Build.0 = Debug|Win32
+		{E1F2BA40-B169-8D69-78E1-868C8A785A9C}.Release|Win32.ActiveCfg = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

cmat/Ex11bug/Ex11.vcproj

@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding = "Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.00"
+	Name="Ex11"
+	SccProjectName="&quot;$/Course/397/Ex11&quot;, DAAAAAAA"
+	SccLocalPath=".">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\Release"
+			IntermediateDirectory=".\Release"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				InlineFunctionExpansion="1"
+				PreprocessorDefinitions="WIN32,NDEBUG,_CONSOLE"
+				StringPooling="TRUE"
+				RuntimeLibrary="4"
+				EnableFunctionLevelLinking="TRUE"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Release/Ex11.pch"
+				AssemblerListingLocation=".\Release/"
+				ObjectFile=".\Release/"
+				ProgramDataBaseFileName=".\Release/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/MACHINE:I386"
+				AdditionalDependencies="odbc32.lib odbccp32.lib"
+				OutputFile=".\Release/Ex11.exe"
+				LinkIncremental="1"
+				SuppressStartupBanner="TRUE"
+				ProgramDatabaseFile=".\Release/Ex11.pdb"
+				SubSystem="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Release/Ex11.tlb"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\Debug"
+			IntermediateDirectory=".\Debug"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				PreprocessorDefinitions="WIN32,_DEBUG,_CONSOLE"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="5"
+				RuntimeTypeInfo="TRUE"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Debug/Ex11.pch"
+				AssemblerListingLocation=".\Debug/"
+				ObjectFile=".\Debug/"
+				ProgramDataBaseFileName=".\Debug/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"
+				DebugInformationFormat="4"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/MACHINE:I386"
+				AdditionalDependencies="odbc32.lib odbccp32.lib"
+				OutputFile=".\Debug/Ex11.exe"
+				LinkIncremental="2"
+				SuppressStartupBanner="TRUE"
+				GenerateDebugInformation="TRUE"
+				ProgramDatabaseFile=".\Debug/Ex11.pdb"
+				SubSystem="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Debug/Ex11.tlb"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+	</Configurations>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+			<File
+				RelativePath=".\Light.cpp">
+			</File>
+			<File
+				RelativePath=".\Pelican.cpp">
+			</File>
+			<File
+				RelativePath=".\PelicanTimer.cpp">
+			</File>
+			<File
+				RelativePath=".\Timer.cpp">
+			</File>
+			<File
+				RelativePath="TimerSet.cpp">
+			</File>
+			<File
+				RelativePath=".\main.cpp">
+			</File>
+			<File
+				RelativePath=".\pole.cpp">
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl">
+			<File
+				RelativePath=".\Light.h">
+			</File>
+			<File
+				RelativePath=".\Pelican.h">
+			</File>
+			<File
+				RelativePath=".\PelicanTimer.h">
+			</File>
+			<File
+				RelativePath=".\Timer.h">
+			</File>
+			<File
+				RelativePath="TimerSet.h">
+			</File>
+			<File
+				RelativePath=".\pole.h">
+			</File>
+		</Filter>
+		<Filter
+			Name="DOS_Unix"
+			Filter="">
+			<File
+				RelativePath="..\DOS_Unix\Keyboard.h">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Keyboard_DOS.cpp">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Screen.h">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Screen_DOS.cpp">
+			</File>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

cmat/Ex11bug/Ex11.vcxproj

@@ -0,0 +1,141 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <SccProjectName>
+    </SccProjectName>
+    <SccLocalPath>
+    </SccLocalPath>
+    <ProjectGuid>{E1F2BA40-B169-8D69-78E1-868C8A785A9C}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\Release\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\Release\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">.\Debug\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">.\Debug\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <StringPooling>true</StringPooling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>.\Release/Ex11.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\Release/</AssemblerListingLocation>
+      <ObjectFileName>.\Release/</ObjectFileName>
+      <ProgramDataBaseFileName>.\Release/</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+    </ClCompile>
+    <Link>
+      <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalDependencies>odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <OutputFile>.\Release/Ex11.exe</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <ProgramDatabaseFile>.\Release/Ex11.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+    </Link>
+    <Midl>
+      <TypeLibraryName>.\Release/Ex11.tlb</TypeLibraryName>
+    </Midl>
+    <ResourceCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0409</Culture>
+    </ResourceCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>.\Debug/Ex11.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\Debug/</AssemblerListingLocation>
+      <ObjectFileName>.\Debug/</ObjectFileName>
+      <ProgramDataBaseFileName>.\Debug/</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <AdditionalIncludeDirectories>C:\course\397\DOS_Unix;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalDependencies>odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <OutputFile>.\Debug/Ex11.exe</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>.\Debug/Ex11.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+    </Link>
+    <Midl>
+      <TypeLibraryName>.\Debug/Ex11.tlb</TypeLibraryName>
+    </Midl>
+    <ResourceCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0409</Culture>
+    </ResourceCompile>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="Light.cpp" />
+    <ClCompile Include="Pelican.cpp" />
+    <ClCompile Include="PelicanTimer.cpp" />
+    <ClCompile Include="Timer.cpp" />
+    <ClCompile Include="TimerSet.cpp" />
+    <ClCompile Include="main.cpp" />
+    <ClCompile Include="pole.cpp" />
+    <ClCompile Include="..\DOS_Unix\Keyboard_DOS.cpp" />
+    <ClCompile Include="..\DOS_Unix\Screen_DOS.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Light.h" />
+    <ClInclude Include="Pelican.h" />
+    <ClInclude Include="PelicanTimer.h" />
+    <ClInclude Include="Timer.h" />
+    <ClInclude Include="TimerSet.h" />
+    <ClInclude Include="pole.h" />
+    <ClInclude Include="..\DOS_Unix\Keyboard.h" />
+    <ClInclude Include="..\DOS_Unix\Screen.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

cmat/Ex11bug/Ex11.vcxproj.filters

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{b96cbaea-8ae3-4716-865e-3aaf915fd0af}</UniqueIdentifier>
+      <Extensions>cpp;c;cxx;rc;def;r;odl;idl;hpj;bat</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{f948cebc-f590-4325-a5cc-fa8c85aa7733}</UniqueIdentifier>
+      <Extensions>h;hpp;hxx;hm;inl</Extensions>
+    </Filter>
+    <Filter Include="DOS_Unix">
+      <UniqueIdentifier>{c3395356-0a3a-4c18-8b27-851ff1f2369a}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="Light.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="Pelican.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="PelicanTimer.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="Timer.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="TimerSet.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="main.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="pole.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\DOS_Unix\Keyboard_DOS.cpp">
+      <Filter>DOS_Unix</Filter>
+    </ClCompile>
+    <ClCompile Include="..\DOS_Unix\Screen_DOS.cpp">
+      <Filter>DOS_Unix</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Light.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Pelican.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="PelicanTimer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Timer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="TimerSet.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="pole.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Keyboard.h">
+      <Filter>DOS_Unix</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Screen.h">
+      <Filter>DOS_Unix</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>

cmat/Ex11bug/Ex11.vcxproj.user

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+</Project>

cmat/Ex11bug/Light.cpp

@@ -0,0 +1,22 @@
+
+
+#include "Light.h"
+#include "CursesObj.h"
+#include "Pelican.h"
+#include "Screen.h"
+#include <iostream>
+
+Light::Light(std::string name, int x, int y, int color) : x(x), y(y), c(color), name(name) {}
+
+Light::~Light() {
+    std::cout << "Deleting light (" << name << ", " << x << ", " << y << ", " << c << ")" << std::endl;
+    std::cout.flush();
+}
+
+void Light::set(LightState newState) {
+    state = newState;
+    Screen::write(name.c_str(), x, y, state == FLASH ? (128 + c) : (state == OFF ? 0 : c));
+    // 128 + color was used to make a character flash (but not any more)
+}
+
+Light::LightState Light::get(void) { return state; }

cmat/Ex11bug/Light.h

@@ -0,0 +1,30 @@
+// ======================================================
+//
+// Represents a light, implemented as a string written
+// to a console window
+//
+// ======================================================
+
+#ifndef LIGHT_H
+#define LIGHT_H
+
+#include <string>
+
+class Light {
+  public:
+    Light(std::string name, int x, int y, int color);
+    ~Light();
+
+    enum LightState { ON, OFF, FLASH };
+
+    void set(LightState new_state);
+    LightState get(void);
+
+  private:
+    int c; // light colour
+    int x, y;
+    std::string name;
+    LightState state;
+};
+
+#endif

cmat/Ex11bug/Pelican.cpp

@@ -0,0 +1,66 @@
+
+
+#include "Pelican.h"
+#include "PelicanTimer.h"
+#include "Pole.h"
+
+Pelican::Pelican(int x, int y)
+    : pressed(false), RED_TIME(4), YELLOW_TIME(2), GREEN_TIME(3), FLASH_TIME(5), myPole(new Pole(x, y)),
+      state(GREEN_IDLE) {
+    myTimer = new PelicanTimer(*this, &Pelican::timerExpired);
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed() ? Light::ON : Light::OFF);
+}
+
+Pelican::~Pelican() { delete myPole; }
+
+void Pelican::press(void) {
+    if (state == GREEN_IDLE) {
+        state = YELLOW_STATE;
+        myTimer->timeoutRequest(YELLOW_TIME);
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed() ? Light::ON : Light::OFF);
+    } else if (state != RED_STATE) {
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed() ? Light::ON : Light::OFF);
+    }
+}
+
+void Pelican::timerExpired(void) {
+    switch (state) {
+    case RED_STATE:
+        state = YELLOW_FLASHING;
+        myTimer->timeoutRequest(FLASH_TIME);
+        break;
+
+    case YELLOW_FLASHING:
+        state = GREEN_TIMING;
+        myTimer->timeoutRequest(GREEN_TIME);
+        break;
+
+    case GREEN_TIMING:
+        if (pressed) {
+            state = YELLOW_STATE;
+            myTimer->timeoutRequest(YELLOW_TIME);
+        } else {
+            state = GREEN_IDLE;
+        }
+        break;
+
+    case GREEN_IDLE:
+        //    should never happen
+        break;
+
+    case YELLOW_STATE:
+        state = RED_STATE;
+        pressed = false;
+        myTimer->timeoutRequest(RED_TIME);
+        break;
+    }
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed() ? Light::ON : Light::OFF);
+}

cmat/Ex11bug/Pelican.h

@@ -0,0 +1,53 @@
+// ======================================================
+//
+// Represents a Pelican crossing
+//
+// ======================================================
+
+#ifndef PELICAN_H
+#define PELICAN_H
+
+class PelicanTimer;
+class Pole;
+
+class Pelican {
+  public:
+    Pelican(int x, int y);
+    ~Pelican();
+
+    // call when the WAIT button has been pressed
+    void press(void);
+
+    // states that a Pelican can be in
+    enum PelicanState { RED_STATE, YELLOW_FLASHING, GREEN_TIMING, GREEN_IDLE, YELLOW_STATE };
+
+    bool isPressed() const { return pressed; }
+    PelicanState getState() const { return state; }
+
+  private:
+    // state that this Pelican is in
+    PelicanState state;
+
+    // called by PeleicanTimer when the lights need to change
+    void timerExpired(void);
+
+    const unsigned int RED_TIME;
+    const unsigned int YELLOW_TIME;
+    const unsigned int GREEN_TIME;
+    const unsigned int FLASH_TIME;
+
+    // indicates whether the WAIT light should be on
+    bool pressed;
+
+    Pole *myPole;
+
+    // Timer that indicates when the lights should change
+    PelicanTimer *myTimer;
+
+  private:
+    //  prevent general use of copy ctor and operator=
+    Pelican(const Pelican &);
+    Pelican &operator=(const Pelican &);
+};
+
+#endif

cmat/Ex11bug/PelicanTimer.cpp

@@ -0,0 +1,11 @@
+
+
+#include "PelicanTimer.h"
+
+PelicanTimer::PelicanTimer(Pelican &target, TargetFunc targetFunc) : myTarget(target), myTargetFunc(targetFunc) {}
+
+void PelicanTimer::tick() {
+    if (isExpired()) {
+        (myTarget.*myTargetFunc)();
+    }
+}

cmat/Ex11bug/PelicanTimer.h

@@ -0,0 +1,27 @@
+// ======================================================
+//
+// This class specializes the Timer to enable it to
+// stimulate a Pelican
+//
+// ======================================================
+
+#ifndef PELICANTIMER_H
+#define PELICANTIMER_H
+
+#include "Pelican.h"
+#include "Timer.h"
+
+class PelicanTimer : public Timer {
+  public:
+    typedef void (Pelican::*TargetFunc)();
+
+    PelicanTimer(Pelican &target, TargetFunc targetFunc);
+
+    virtual void tick();
+
+  private:
+    Pelican &myTarget;
+    TargetFunc myTargetFunc;
+};
+
+#endif

cmat/Ex11bug/Pole.cpp

@@ -0,0 +1,59 @@
+#include "Pole.h"
+#include "Screen.h"
+
+Pole::Pole(int x, int y) : waitLight(new Light("WAIT", x + 6, y + 12, Screen::WHITE)) {
+    using namespace Screen; // we will discuss namespaces in the course
+
+    lights[RED_LIGHT] = new Light("*", x + 11, y + 3, RED);
+    lights[RED_MAN] = new Light("*<-=", x + 6, y + 4, RED);
+    lights[YELLOW_LIGHT] = new Light("*", x + 11, y + 5, YELLOW);
+    lights[GREEN_LIGHT] = new Light("*", x + 11, y + 7, GREEN);
+    lights[GREEN_MAN] = new Light("*|-<", x + 6, y + 7, GREEN);
+
+    write("       _____         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |____| |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("       _||__         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("========||===========", x, ++y, GRAY);
+    write("    /   ||     /     ", x, ++y, GRAY);
+    write("_ /_________ /_      ", x, ++y, GRAY);
+    write("/          /         ", x, ++y, GRAY);
+}
+
+Pole::~Pole() {
+    for (int i = 0; i < sizeof lights / sizeof(lights[0]); ++i)
+        delete lights[i];
+    delete waitLight;
+}
+
+void Pole::setTrafficLights(Pelican::PelicanState state) {
+    static const Light::LightState LightStates[Pelican::YELLOW_STATE + 1][RED_MAN + 1] = {
+        //  red         yellow        green       green man     red man
+        {Light::ON, Light::OFF, Light::OFF, Light::ON, Light::OFF},       // red
+        {Light::OFF, Light::FLASH, Light::OFF, Light::FLASH, Light::OFF}, // y flash
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g time
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g idle
+        {Light::OFF, Light::ON, Light::OFF, Light::OFF, Light::ON}        // yellow
+    };
+
+    for (int i = RED_LIGHT; i <= RED_MAN; i++) {
+        lights[i]->set(LightStates[state][i]);
+    }
+}
+
+void Pole::setWaitLight(bool pressed) { waitLight->set(pressed ? Light::ON : Light::OFF); }

cmat/Ex11bug/Pole.h

@@ -0,0 +1,23 @@
+#ifndef POLE_H
+#define POLE_H
+
+#include "Light.h"
+#include "Pelican.h"
+
+class Pole {
+  public:
+    Pole(int x, int y);
+    ~Pole();
+
+    void setTrafficLights(Pelican::PelicanState state);
+    void setWaitLight(bool pressed);
+
+  private:
+    enum LightName { RED_LIGHT, YELLOW_LIGHT, GREEN_LIGHT, GREEN_MAN, RED_MAN };
+
+    Light *lights[RED_MAN + 1];
+
+    Light *waitLight;
+};
+
+#endif

cmat/Ex11bug/Timer.cpp

@@ -0,0 +1,17 @@
+
+
+#include "Timer.h"
+#include "TimerSet.h"
+
+void Timer::timeoutRequest(int seconds) { timeToGo = seconds; }
+
+Timer::Timer() : timeToGo(-1) { theTimerSet.addATimer(this); }
+
+bool Timer::isExpired() {
+    if (timeToGo > 0) {
+        if (--timeToGo == 0) {
+            return true;
+        }
+    }
+    return false;
+}

cmat/Ex11bug/Timer.h

@@ -0,0 +1,27 @@
+// ======================================================
+//
+// A general-purpose countdown timer
+// To use this class, specialize it
+// and override tick()
+//
+// ======================================================
+
+#ifndef TIMER_H
+#define TIMER_H
+
+class Timer {
+  public:
+    Timer();
+
+    void timeoutRequest(int seconds);
+
+    virtual void tick() = 0;
+
+  protected:
+    bool isExpired();
+
+  private:
+    int timeToGo;
+};
+
+#endif

cmat/Ex11bug/TimerSet.cpp

@@ -0,0 +1,24 @@
+ 
+
+
+
+#include "TimerSet.h"
+#include "Timer.h"
+
+TimerSet theTimerSet;
+
+
+
+TimerSet::TimerSet() : timersInUse(0), previousTime(time(&previousTime)) {}
+
+void TimerSet::addATimer(Timer *t) { timers[timersInUse++] = t; }
+
+void TimerSet::pollAllTimers() {
+    std::time_t timeNow;
+    if (time(&timeNow) > previousTime) {
+        previousTime = timeNow;
+        for (int i = 0; i < timersInUse; ++i) {
+            timers[i]->tick();
+        }
+    }
+}

cmat/Ex11bug/TimerSet.h

@@ -0,0 +1,23 @@
+#ifndef TIMERSET_H
+#define TIMERSET_H
+
+#include <ctime>
+
+class Timer;
+
+class TimerSet {
+  public:
+    TimerSet();
+
+    void pollAllTimers();
+    void addATimer(Timer *);
+
+  private:
+    Timer *timers[40];
+    int timersInUse;
+    std::time_t previousTime;
+};
+
+extern TimerSet theTimerSet;
+
+#endif

cmat/Ex11bug/main.cpp

@@ -0,0 +1,29 @@
+
+
+#include "Keyboard.h"
+#include "Pelican.h"
+#include "TimerSet.h"
+
+#include <cctype> // provides toupper()
+
+int main() {
+    Keyboard kbd;
+    Pelican thePelican(30, 0);
+
+    char c = 0;
+
+    while (std::toupper(c) != 'Q') { // loop until 'Q' is pressed
+
+        while (!kbd.isCharAvail()) {
+            theTimerSet.pollAllTimers(); // no key press to process, poll the timers
+        }
+
+        c = kbd.getChar(); // get the character
+        if (c == ' ') {
+            // it's a space, so press the WAIT button
+            thePelican.press();
+        }
+    }
+
+    return 0;
+}

cmat/Ex11bug/make.mk

@@ -0,0 +1,2 @@
+BASEOBJS = \
+	Light.o main.o Pelican.o PelicanTimer.o Pole.o Timer.o TimerSet.o 

cmat/Ex11bug/makefile

@@ -0,0 +1,17 @@
+COMPILER = gcc
+FLAGS =  
+INCLUDES = -I/usr/local/include/c++/3.4.2 -I../DOS_Unix
+ARCHIVES = -L/usr/local/lib/gcc/sparc-sun-solaris2.7/3.4.2 -L/usr/local/lib -L/usr/lib
+UNIX_OBJS = ../DOS_Unix/CursesObj.o  ../DOS_Unix/Keyboard_Unix.o  ../DOS_Unix/Screen_Unix.o 
+
+include make.mk
+
+.SUFFIXES: .cpp .o
+
+all: pelican 
+
+.cpp.o:
+	$(COMPILER) $(INCLUDES) -frepo -c $(FLAGS) $*.cpp 
+
+pelican : $(BASEOBJS)
+	$(COMPILER) $(ARCHIVES) -o pelican -lcurses $(BASEOBJS) $(UNIX_OBJS) -lcurses -lstdc++ -static

cmat/Ex21/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Ex21
+
+cmat_add_exercise(Ex21
+    GUI
+    SOURCES
+    Light.cpp
+    Main.cpp
+    Pelican.cpp
+    PelicanTimer.cpp
+    Pole.cpp
+    Timer.cpp
+    TimerSet.cpp
+)

cmat/Ex21/Ex21.sln

@@ -0,0 +1,20 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.21005.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Ex21", "Ex21.vcxproj", "{AC7B29B3-9F42-7C36-686F-2F829309B86D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{AC7B29B3-9F42-7C36-686F-2F829309B86D}.Debug|Win32.ActiveCfg = Debug|Win32
+		{AC7B29B3-9F42-7C36-686F-2F829309B86D}.Debug|Win32.Build.0 = Debug|Win32
+		{AC7B29B3-9F42-7C36-686F-2F829309B86D}.Release|Win32.ActiveCfg = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

cmat/Ex21/Ex21.vcproj

@@ -0,0 +1,185 @@
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+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.00"
+	Name="Ex21"
+	SccProjectName="&quot;$/Course/397/Ex21&quot;, DCAAAAAA"
+	SccLocalPath=".">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\Release"
+			IntermediateDirectory=".\Release"
+			ConfigurationType="1"
+			UseOfMFC="0"
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+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Release/Ex21.pch"
+				AssemblerListingLocation=".\Release/"
+				ObjectFile=".\Release/"
+				ProgramDataBaseFileName=".\Release/"
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+				Name="VCCustomBuildTool"/>
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+				Name="VCLinkerTool"
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+				Name="VCPostBuildEventTool"/>
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+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\Debug"
+			IntermediateDirectory=".\Debug"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
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+				Name="VCCLCompilerTool"
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+				PrecompiledHeaderFile=".\Debug/Ex21.pch"
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+				Name="VCPostBuildEventTool"/>
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+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
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+		</Configuration>
+	</Configurations>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+			<File
+				RelativePath=".\Light.cpp">
+			</File>
+			<File
+				RelativePath=".\Main.cpp">
+			</File>
+			<File
+				RelativePath=".\Pelican.cpp">
+			</File>
+			<File
+				RelativePath=".\PelicanTimer.cpp">
+			</File>
+			<File
+				RelativePath="Pole.cpp">
+			</File>
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+		<Filter
+			Name="Header Files"
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+			Name="DOS_Unix"
+			Filter="">
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cmat/Ex21/Ex21.vcxproj

@@ -0,0 +1,141 @@
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+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
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+    </SccProjectName>
+    <SccLocalPath>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <ClCompile Include="Main.cpp" />
+    <ClCompile Include="Pelican.cpp" />
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+    <ClCompile Include="Timer.cpp" />
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cmat/Ex21/Ex21.vcxproj.filters

@@ -0,0 +1,71 @@
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+    </ClCompile>
+    <ClCompile Include="Timer.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="TimerSet.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\DOS_Unix\Keyboard_DOS.cpp">
+      <Filter>DOS_Unix</Filter>
+    </ClCompile>
+    <ClCompile Include="..\DOS_Unix\Screen_DOS.cpp">
+      <Filter>DOS_Unix</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Light.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Pelican.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="PelicanTimer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Pole.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Timer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="TimerSet.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Keyboard.h">
+      <Filter>DOS_Unix</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Screen.h">
+      <Filter>DOS_Unix</Filter>
+    </ClInclude>
+  </ItemGroup>
+</Project>

cmat/Ex21/Ex21.vcxproj.user

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+</Project>

cmat/Ex21/Light.cpp

@@ -0,0 +1,19 @@
+#include "Light.h"
+#include "Pelican.h"
+#include "Screen.h"
+#include <iostream>
+
+Light::Light(std::string name, int x, int y, int color) : x(x), y(y), c(color), name(name) {}
+
+Light::~Light() {
+    std::cout << "Deleting light (" << name << ", " << x << ", " << y << ", " << c << ")"
+              << "\n";
+}
+
+void Light::set(LightState newState) {
+    state = newState;
+    Screen::write(name.c_str(), x, y, state == FLASH ? (128 + c) : (state == OFF ? 0 : c));
+    // 128 + color was used to make a character flash (but not any more)
+}
+
+Light::LightState Light::get(void) { return state; }

cmat/Ex21/Light.h

@@ -0,0 +1,30 @@
+// ======================================================
+//
+// Represents a light, implemented as a string written
+// to a console window
+//
+// ======================================================
+
+#ifndef LIGHT_H
+#define LIGHT_H
+
+#include <string>
+
+class Light {
+  public:
+    Light(std::string name, int x, int y, int color);
+    ~Light();
+
+    enum LightState { ON, OFF, FLASH };
+
+    void set(LightState new_state);
+    LightState get(void);
+
+  private:
+    int c; // light colour
+    int x, y;
+    std::string name;
+    LightState state;
+};
+
+#endif

cmat/Ex21/Main.cpp

@@ -0,0 +1,31 @@
+
+
+#include "Keyboard.h"
+#include "Pelican.h"
+#include "TimerSet.h"
+
+#include <cctype> // provides toupper()
+
+static TimerSet theTimerSet;
+
+int main() {
+    Keyboard kbd;
+    Pelican thePelican(30, 0);
+
+    char c = 0;
+
+    while (std::toupper(c) != 'Q') { // loop until 'Q' is pressed
+
+        while (!kbd.isCharAvail()) {
+            theTimerSet.pollAllTimers(); // no key press to process, poll the timers
+        }
+
+        c = kbd.getChar(); // get the character
+        if (c == ' ') {
+            // it's a space, so press the WAIT button
+            thePelican.press();
+        }
+    }
+
+    return 0;
+}

cmat/Ex21/Pelican.cpp

@@ -0,0 +1,65 @@
+
+#include "Pelican.h"
+#include "PelicanTimer.h"
+#include "Pole.h"
+
+Pelican::Pelican(int x, int y)
+    : pressed(false), RED_TIME(4), YELLOW_TIME(2), GREEN_TIME(3), FLASH_TIME(5), myPole(new Pole(x, y)),
+      state(GREEN_IDLE) {
+    myTimer = new PelicanTimer(*this, &Pelican::timerExpired);
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed());
+}
+
+Pelican::~Pelican() { delete myPole; }
+
+void Pelican::press(void) {
+    if (state == GREEN_IDLE) {
+        state = YELLOW_STATE;
+        myTimer->timeoutRequest(YELLOW_TIME);
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed());
+    } else if (state != RED_STATE) {
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed());
+    }
+}
+
+void Pelican::timerExpired(void) {
+    switch (state) {
+    case RED_STATE:
+        state = YELLOW_FLASHING;
+        myTimer->timeoutRequest(FLASH_TIME);
+        break;
+
+    case YELLOW_FLASHING:
+        state = GREEN_TIMING;
+        myTimer->timeoutRequest(GREEN_TIME);
+        break;
+
+    case GREEN_TIMING:
+        if (pressed) {
+            state = YELLOW_STATE;
+            myTimer->timeoutRequest(YELLOW_TIME);
+        } else {
+            state = GREEN_IDLE;
+        }
+        break;
+
+    case GREEN_IDLE:
+        //    should never happen
+        break;
+
+    case YELLOW_STATE:
+        state = RED_STATE;
+        pressed = false;
+        myTimer->timeoutRequest(RED_TIME);
+        break;
+    }
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed());
+}

cmat/Ex21/Pelican.h

@@ -0,0 +1,53 @@
+// ======================================================
+//
+// Represents a Pelican crossing
+//
+// ======================================================
+
+#ifndef PELICAN_H
+#define PELICAN_H
+
+class PelicanTimer;
+class Pole;
+
+class Pelican {
+  public:
+    Pelican(int x, int y);
+    ~Pelican();
+
+    // call when the WAIT button has been pressed
+    void press(void);
+
+    // states that a Pelican can be in
+    enum PelicanState { RED_STATE, YELLOW_FLASHING, GREEN_TIMING, GREEN_IDLE, YELLOW_STATE };
+
+    bool isPressed() const { return pressed; }
+    PelicanState getState() const { return state; }
+
+  private:
+    // state that this Pelican is in
+    PelicanState state;
+
+    // called by PeleicanTimer when the lights need to change
+    void timerExpired(void);
+
+    const unsigned int RED_TIME;
+    const unsigned int YELLOW_TIME;
+    const unsigned int GREEN_TIME;
+    const unsigned int FLASH_TIME;
+
+    // indicates whether the WAIT light should be on
+    bool pressed;
+
+    Pole *myPole;
+
+    // Timer that indicates when the lights should change
+    PelicanTimer *myTimer;
+
+  private:
+    //  prevent general use of copy ctor and operator=
+    Pelican(const Pelican &);
+    Pelican &operator=(const Pelican &);
+};
+
+#endif

cmat/Ex21/PelicanTimer.cpp

@@ -0,0 +1,10 @@
+
+#include "PelicanTimer.h"
+
+PelicanTimer::PelicanTimer(Pelican &target, TargetFunc targetFunc) : myTarget(target), myTargetFunc(targetFunc) {}
+
+void PelicanTimer::tick() {
+    if (isExpired()) {
+        (myTarget.*myTargetFunc)();
+    }
+}

cmat/Ex21/PelicanTimer.h

@@ -0,0 +1,31 @@
+// ======================================================
+//
+// This class specializes the Timer to enable it to
+// stimulate a Pelican
+//
+// ======================================================
+
+#ifndef PELICANTIMER_H
+#define PELICANTIMER_H
+
+#include "Pelican.h"
+#include "Timer.h"
+
+class PelicanTimer : public Timer {
+  public:
+    typedef void (Pelican::*TargetFunc)();
+
+    PelicanTimer(Pelican &target, TargetFunc targetFunc);
+
+    // TODO: Remove this function
+    virtual void tick();
+
+    // TODO: Add override of virtual function Timer::doExpired
+    // (this is the "primitive step" of the template method pattern)
+
+  private:
+    Pelican &myTarget;
+    TargetFunc myTargetFunc;
+};
+
+#endif

cmat/Ex21/Pole.cpp

@@ -0,0 +1,59 @@
+#include "Pole.h"
+#include "Screen.h"
+
+Pole::Pole(int x, int y) : waitLight(new Light("WAIT", x + 6, y + 12, Screen::WHITE)) {
+    using namespace Screen; 
+
+    lights[RED_LIGHT] = new Light("*", x + 11, y + 3, RED);
+    lights[RED_MAN] = new Light("*<-=", x + 6, y + 4, RED);
+    lights[YELLOW_LIGHT] = new Light("*", x + 11, y + 5, YELLOW);
+    lights[GREEN_LIGHT] = new Light("*", x + 11, y + 7, GREEN);
+    lights[GREEN_MAN] = new Light("*|-<", x + 6, y + 7, GREEN);
+
+    write("       _____         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |____| |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("       _||__         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("========||===========", x, ++y, GRAY);
+    write("    /   ||     /     ", x, ++y, GRAY);
+    write("_ /_________ /_      ", x, ++y, GRAY);
+    write("/          /         ", x, ++y, GRAY);
+}
+
+Pole::~Pole() {
+    for (int i = 0; i < sizeof lights / sizeof(lights[0]); ++i)
+        delete lights[i];
+    delete waitLight;
+}
+
+void Pole::setTrafficLights(Pelican::PelicanState state) {
+    static const Light::LightState LightStates[Pelican::YELLOW_STATE + 1][RED_MAN + 1] = {
+        //  red         yellow        green       green man     red man
+        {Light::ON, Light::OFF, Light::OFF, Light::ON, Light::OFF},       // red
+        {Light::OFF, Light::FLASH, Light::OFF, Light::FLASH, Light::OFF}, // y flash
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g time
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g idle
+        {Light::OFF, Light::ON, Light::OFF, Light::OFF, Light::ON}        // yellow
+    };
+
+    for (int i = RED_LIGHT; i <= RED_MAN; i++) {
+        lights[i]->set(LightStates[state][i]);
+    }
+}
+
+void Pole::setWaitLight(bool pressed) { waitLight->set(pressed ? Light::ON : Light::OFF); }

cmat/Ex21/Pole.h

@@ -0,0 +1,23 @@
+#ifndef POLE_H
+#define POLE_H
+
+#include "Light.h"
+#include "Pelican.h"
+
+class Pole {
+  public:
+    Pole(int x, int y);
+    ~Pole();
+
+    void setTrafficLights(Pelican::PelicanState state);
+    void setWaitLight(bool pressed);
+
+  private:
+    enum LightName { RED_LIGHT, YELLOW_LIGHT, GREEN_LIGHT, GREEN_MAN, RED_MAN };
+
+    Light *lights[RED_MAN + 1];
+
+    Light *waitLight;
+};
+
+#endif

cmat/Ex21/Timer.cpp

@@ -0,0 +1,18 @@
+
+#include "Timer.h"
+#include "TimerSet.h"
+
+static TimerSet theTimerSet;
+
+void Timer::timeoutRequest(int seconds) { timeToGo = seconds; }
+
+Timer::Timer() : timeToGo(-1) { theTimerSet.addATimer(this); }
+
+bool Timer::isExpired() {
+    if (timeToGo > 0) {
+        if (--timeToGo == 0) {
+            return true;
+        }
+    }
+    return false;
+}

cmat/Ex21/Timer.h

@@ -0,0 +1,27 @@
+// ======================================================
+//
+// A general-purpose countdown timer
+// To use this class, specialize it
+// and override tick()
+//
+// ======================================================
+
+#ifndef TIMER_H
+#define TIMER_H
+
+class Timer {
+  public:
+    Timer();
+
+    void timeoutRequest(int seconds);
+
+    virtual void tick() = 0;
+
+  protected:
+    bool isExpired();
+
+  private:
+    int timeToGo;
+};
+
+#endif

cmat/Ex21/TimerSet.cpp

@@ -0,0 +1,22 @@
+
+
+// TODO: Add Singleton code
+
+#include "TimerSet.h"
+#include "Timer.h"
+
+
+
+TimerSet::TimerSet() : timersInUse(0), previousTime(time(&previousTime)) {}
+
+void TimerSet::addATimer(Timer *t) { timers[timersInUse++] = t; }
+
+void TimerSet::pollAllTimers() {
+    std::time_t timeNow;
+    if (time(&timeNow) > previousTime) {
+        previousTime = timeNow;
+        for (int i = 0; i < timersInUse; ++i) {
+            timers[i]->tick();
+        }
+    }
+}

cmat/Ex21/TimerSet.h

@@ -0,0 +1,23 @@
+#ifndef TIMERSET_H
+#define TIMERSET_H
+
+#include <ctime>
+
+class Timer;
+
+class TimerSet {
+  public:
+    TimerSet();
+
+    void pollAllTimers();
+    void addATimer(Timer *);
+
+  private:
+    Timer *timers[40];
+    int timersInUse;
+    std::time_t previousTime;
+};
+
+extern TimerSet theTimerSet;
+
+#endif

cmat/Ex22/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Ex22
+
+cmat_add_exercise(Ex22
+    GUI
+    SOURCES
+    Light.cpp
+    main.cpp
+    Pelican.cpp
+    PelicanTimer.cpp
+    Pole.cpp
+    Timer.cpp
+    TimerSet.cpp
+)

cmat/Ex22/Ex22.sln

@@ -0,0 +1,20 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.21005.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Ex22", "Ex22.vcxproj", "{C2EDBD25-9006-0438-220A-8766E6F352A8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C2EDBD25-9006-0438-220A-8766E6F352A8}.Debug|Win32.ActiveCfg = Debug|Win32
+		{C2EDBD25-9006-0438-220A-8766E6F352A8}.Debug|Win32.Build.0 = Debug|Win32
+		{C2EDBD25-9006-0438-220A-8766E6F352A8}.Release|Win32.ActiveCfg = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

cmat/Ex22/Ex22.vcproj

@@ -0,0 +1,182 @@
+<?xml version="1.0" encoding = "Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="7.00"
+	Name="Ex22"
+	SccProjectName="&quot;$/Course/397/Ex22&quot;, UHAAAAAA"
+	SccLocalPath=".">
+	<Platforms>
+		<Platform
+			Name="Win32"/>
+	</Platforms>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory=".\Debug"
+			IntermediateDirectory=".\Debug"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				PreprocessorDefinitions="WIN32,_DEBUG,_CONSOLE"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="5"
+				RuntimeTypeInfo="TRUE"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Debug/Ex22.pch"
+				AssemblerListingLocation=".\Debug/"
+				ObjectFile=".\Debug/"
+				ProgramDataBaseFileName=".\Debug/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"
+				DebugInformationFormat="4"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/MACHINE:I386"
+				AdditionalDependencies="odbc32.lib odbccp32.lib"
+				OutputFile=".\Debug/Ex22.exe"
+				LinkIncremental="2"
+				SuppressStartupBanner="TRUE"
+				GenerateDebugInformation="TRUE"
+				ProgramDatabaseFile=".\Debug/Ex22.pdb"
+				SubSystem="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Debug/Ex22.tlb"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="_DEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory=".\Release"
+			IntermediateDirectory=".\Release"
+			ConfigurationType="1"
+			UseOfMFC="0"
+			ATLMinimizesCRunTimeLibraryUsage="FALSE"
+			CharacterSet="2">
+			<Tool
+				Name="VCCLCompilerTool"
+				InlineFunctionExpansion="1"
+				PreprocessorDefinitions="WIN32,NDEBUG,_CONSOLE"
+				StringPooling="TRUE"
+				RuntimeLibrary="4"
+				EnableFunctionLevelLinking="TRUE"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderFile=".\Release/Ex22.pch"
+				AssemblerListingLocation=".\Release/"
+				ObjectFile=".\Release/"
+				ProgramDataBaseFileName=".\Release/"
+				WarningLevel="3"
+				SuppressStartupBanner="TRUE"/>
+			<Tool
+				Name="VCCustomBuildTool"/>
+			<Tool
+				Name="VCLinkerTool"
+				AdditionalOptions="/MACHINE:I386"
+				AdditionalDependencies="odbc32.lib odbccp32.lib"
+				OutputFile=".\Release/Ex22.exe"
+				LinkIncremental="1"
+				SuppressStartupBanner="TRUE"
+				ProgramDatabaseFile=".\Release/Ex22.pdb"
+				SubSystem="1"/>
+			<Tool
+				Name="VCMIDLTool"
+				TypeLibraryName=".\Release/Ex22.tlb"/>
+			<Tool
+				Name="VCPostBuildEventTool"/>
+			<Tool
+				Name="VCPreBuildEventTool"/>
+			<Tool
+				Name="VCPreLinkEventTool"/>
+			<Tool
+				Name="VCResourceCompilerTool"
+				PreprocessorDefinitions="NDEBUG"
+				Culture="1033"/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"/>
+			<Tool
+				Name="VCWebDeploymentTool"/>
+		</Configuration>
+	</Configurations>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">
+			<File
+				RelativePath="Light.cpp">
+			</File>
+			<File
+				RelativePath="Pelican.cpp">
+			</File>
+			<File
+				RelativePath="PelicanTimer.cpp">
+			</File>
+			<File
+				RelativePath="Pole.cpp">
+			</File>
+			<File
+				RelativePath="Timer.cpp">
+			</File>
+			<File
+				RelativePath="TimerSet.cpp">
+			</File>
+			<File
+				RelativePath=".\main.cpp">
+			</File>
+		</Filter>
+		<Filter
+			Name="Header Files"
+			Filter="h;hpp;hxx;hm;inl">
+			<File
+				RelativePath="Pelican.h">
+			</File>
+			<File
+				RelativePath="PelicanTimer.h">
+			</File>
+			<File
+				RelativePath="Pole.h">
+			</File>
+			<File
+				RelativePath="Timer.h">
+			</File>
+			<File
+				RelativePath="TimerSet.h">
+			</File>
+		</Filter>
+		<Filter
+			Name="DOS_Unix"
+			Filter="">
+			<File
+				RelativePath="..\DOS_Unix\Keyboard.h">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Keyboard_DOS.cpp">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Screen.h">
+			</File>
+			<File
+				RelativePath="..\DOS_Unix\Screen_DOS.cpp">
+			</File>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

cmat/Ex22/Ex22.vcxproj

@@ -0,0 +1,141 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <SccProjectName>
+    </SccProjectName>
+    <SccLocalPath>
+    </SccLocalPath>
+    <ProjectGuid>{C2EDBD25-9006-0438-220A-8766E6F352A8}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
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+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</LinkIncremental>
+    <OutDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\Release\</OutDir>
+    <IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">.\Release\</IntDir>
+    <LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
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+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
+      <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <RuntimeTypeInfo>true</RuntimeTypeInfo>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
+      <PrecompiledHeaderOutputFile>.\Debug/Ex22.pch</PrecompiledHeaderOutputFile>
+      <AssemblerListingLocation>.\Debug/</AssemblerListingLocation>
+      <ObjectFileName>.\Debug/</ObjectFileName>
+      <ProgramDataBaseFileName>.\Debug/</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <AdditionalIncludeDirectories>C:\course\397\DOS_Unix;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalDependencies>odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <OutputFile>.\Debug/Ex22.exe</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <ProgramDatabaseFile>.\Debug/Ex22.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+    </Link>
+    <Midl>
+      <TypeLibraryName>.\Debug/Ex22.tlb</TypeLibraryName>
+    </Midl>
+    <ResourceCompile>
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+      <Culture>0x0409</Culture>
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+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <StringPooling>true</StringPooling>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
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+      <AssemblerListingLocation>.\Release/</AssemblerListingLocation>
+      <ObjectFileName>.\Release/</ObjectFileName>
+      <ProgramDataBaseFileName>.\Release/</ProgramDataBaseFileName>
+      <WarningLevel>Level3</WarningLevel>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+    </ClCompile>
+    <Link>
+      <AdditionalOptions>/MACHINE:I386 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalDependencies>odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <OutputFile>.\Release/Ex22.exe</OutputFile>
+      <SuppressStartupBanner>true</SuppressStartupBanner>
+      <ProgramDatabaseFile>.\Release/Ex22.pdb</ProgramDatabaseFile>
+      <SubSystem>Console</SubSystem>
+    </Link>
+    <Midl>
+      <TypeLibraryName>.\Release/Ex22.tlb</TypeLibraryName>
+    </Midl>
+    <ResourceCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <Culture>0x0409</Culture>
+    </ResourceCompile>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="Light.cpp" />
+    <ClCompile Include="Pelican.cpp" />
+    <ClCompile Include="PelicanTimer.cpp" />
+    <ClCompile Include="Pole.cpp" />
+    <ClCompile Include="Timer.cpp" />
+    <ClCompile Include="TimerSet.cpp" />
+    <ClCompile Include="main.cpp" />
+    <ClCompile Include="..\DOS_Unix\Keyboard_DOS.cpp" />
+    <ClCompile Include="..\DOS_Unix\Screen_DOS.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Light.h" />
+    <ClInclude Include="Pelican.h" />
+    <ClInclude Include="PelicanTimer.h" />
+    <ClInclude Include="Pole.h" />
+    <ClInclude Include="Timer.h" />
+    <ClInclude Include="TimerSet.h" />
+    <ClInclude Include="..\DOS_Unix\Keyboard.h" />
+    <ClInclude Include="..\DOS_Unix\Screen.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

cmat/Ex22/Ex22.vcxproj.filters

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+      <Extensions>cpp;c;cxx;rc;def;r;odl;idl;hpj;bat</Extensions>
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+      <Extensions>h;hpp;hxx;hm;inl</Extensions>
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+      <UniqueIdentifier>{f8ec245a-126d-413b-8f31-4f57d4342719}</UniqueIdentifier>
+    </Filter>
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+    <ClCompile Include="Light.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="Pelican.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="PelicanTimer.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="Pole.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="Timer.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="TimerSet.cpp">
+      <Filter>Source Files</Filter>
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+    <ClCompile Include="main.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\DOS_Unix\Keyboard_DOS.cpp">
+      <Filter>DOS_Unix</Filter>
+    </ClCompile>
+    <ClCompile Include="..\DOS_Unix\Screen_DOS.cpp">
+      <Filter>DOS_Unix</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Pelican.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="PelicanTimer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Pole.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="Timer.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="TimerSet.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Keyboard.h">
+      <Filter>DOS_Unix</Filter>
+    </ClInclude>
+    <ClInclude Include="..\DOS_Unix\Screen.h">
+      <Filter>DOS_Unix</Filter>
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+      <Filter>Header Files</Filter>
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cmat/Ex22/Ex22.vcxproj.user

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+</Project>

cmat/Ex22/Light.cpp

@@ -0,0 +1,21 @@
+
+
+#include "Light.h"
+#include "Pelican.h"
+#include "Screen.h"
+#include <iostream>
+
+Light::Light(std::string name, int x, int y, int color) : x(x), y(y), c(color), name(name) {}
+
+Light::~Light() {
+    std::cout << "Deleting light (" << name << ", " << x << ", " << y << ", " << c << ")"
+              << "\n";
+}
+
+void Light::set(LightState newState) {
+    state = newState;
+    Screen::write(name.c_str(), x, y, state == FLASH ? (128 + c) : (state == OFF ? 0 : c));
+    // 128 + color was used to make a character flash (but not any more)
+}
+
+Light::LightState Light::get(void) { return state; }

cmat/Ex22/Light.h

@@ -0,0 +1,30 @@
+// ======================================================
+//
+// Represents a light, implemented as a string written
+// to a console window
+//
+// ======================================================
+
+#ifndef LIGHT_H
+#define LIGHT_H
+
+#include <string>
+
+class Light {
+  public:
+    Light(std::string name, int x, int y, int color);
+    ~Light();
+
+    enum LightState { ON, OFF, FLASH };
+
+    void set(LightState new_state);
+    LightState get(void);
+
+  private:
+    int c; // light colour
+    int x, y;
+    std::string name;
+    LightState state;
+};
+
+#endif

cmat/Ex22/Pelican.cpp

@@ -0,0 +1,66 @@
+
+
+#include "Pelican.h"
+#include "PelicanTimer.h"
+#include "Pole.h"
+
+Pelican::Pelican(int x, int y)
+    : pressed(false), RED_TIME(4), YELLOW_TIME(2), GREEN_TIME(3), FLASH_TIME(5), myPole(new Pole(x, y)),
+      state(GREEN_IDLE) {
+    myTimer = new PelicanTimer(*this, &Pelican::timerExpired);
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed());
+}
+
+Pelican::~Pelican() { delete myPole; }
+
+void Pelican::press(void) {
+    if (state == GREEN_IDLE) {
+        state = YELLOW_STATE;
+        myTimer->timeoutRequest(YELLOW_TIME);
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed());
+    } else if (state != RED_STATE) {
+        pressed = true;
+        myPole->setTrafficLights(getState());
+        myPole->setWaitLight(isPressed());
+    }
+}
+
+void Pelican::timerExpired(void) {
+    switch (state) {
+    case RED_STATE:
+        state = YELLOW_FLASHING;
+        myTimer->timeoutRequest(FLASH_TIME);
+        break;
+
+    case YELLOW_FLASHING:
+        state = GREEN_TIMING;
+        myTimer->timeoutRequest(GREEN_TIME);
+        break;
+
+    case GREEN_TIMING:
+        if (pressed) {
+            state = YELLOW_STATE;
+            myTimer->timeoutRequest(YELLOW_TIME);
+        } else {
+            state = GREEN_IDLE;
+        }
+        break;
+
+    case GREEN_IDLE:
+        //    should never happen
+        break;
+
+    case YELLOW_STATE:
+        state = RED_STATE;
+        pressed = false;
+        myTimer->timeoutRequest(RED_TIME);
+        break;
+    }
+
+    myPole->setTrafficLights(getState());
+    myPole->setWaitLight(isPressed());
+}

cmat/Ex22/Pelican.h

@@ -0,0 +1,53 @@
+// ======================================================
+//
+// Represents a Pelican crossing
+//
+// ======================================================
+
+#ifndef PELICAN_H
+#define PELICAN_H
+
+class PelicanTimer;
+class Pole;
+
+class Pelican {
+  public:
+    Pelican(int x, int y);
+    ~Pelican();
+
+    // call when the WAIT button has been pressed
+    void press(void);
+
+    // states that a Pelican can be in
+    enum PelicanState { RED_STATE, YELLOW_FLASHING, GREEN_TIMING, GREEN_IDLE, YELLOW_STATE };
+
+    bool isPressed() const { return pressed; }
+    PelicanState getState() const { return state; }
+
+  private:
+    // state that this Pelican is in
+    PelicanState state;
+
+    // called by PeleicanTimer when the lights need to change
+    void timerExpired(void);
+
+    const unsigned int RED_TIME;
+    const unsigned int YELLOW_TIME;
+    const unsigned int GREEN_TIME;
+    const unsigned int FLASH_TIME;
+
+    // indicates whether the WAIT light should be on
+    bool pressed;
+
+    Pole *myPole;
+
+    // Timer that indicates when the lights should change
+    PelicanTimer *myTimer;
+
+  private:
+    //  prevent general use of copy ctor and operator=
+    Pelican(const Pelican &);
+    Pelican &operator=(const Pelican &);
+};
+
+#endif

cmat/Ex22/PelicanTimer.cpp

@@ -0,0 +1,11 @@
+
+
+#include "PelicanTimer.h"
+
+PelicanTimer::PelicanTimer(Pelican &target, TargetFunc targetFunc) : myTarget(target), myTargetFunc(targetFunc) {}
+
+void PelicanTimer::tick() {
+    if (isExpired()) {
+        (myTarget.*myTargetFunc)();
+    }
+}

cmat/Ex22/PelicanTimer.h

@@ -0,0 +1,28 @@
+// ======================================================
+//
+// This class specializes the Timer to enable it to
+// stimulate a Pelican
+//
+// ======================================================
+
+#ifndef PELICANTIMER_H
+#define PELICANTIMER_H
+
+#include "Pelican.h"
+#include "Timer.h"
+
+class PelicanTimer : public Timer {
+  public:
+    typedef void (Pelican::*TargetFunc)();
+
+    PelicanTimer(Pelican &target, TargetFunc targetFunc);
+
+    // TODO: Rename this function to doExpired. The parameters and return type are unchanged.
+    virtual void tick();
+
+  private:
+    Pelican &myTarget;
+    TargetFunc myTargetFunc;
+};
+
+#endif

cmat/Ex22/Pole.cpp

@@ -0,0 +1,59 @@
+#include "Pole.h"
+#include "Screen.h"
+
+Pole::Pole(int x, int y) : waitLight(new Light("WAIT", x + 6, y + 12, Screen::WHITE)) {
+    using namespace Screen; // we will discuss namespaces in the course
+
+    lights[RED_LIGHT] = new Light("*", x + 11, y + 3, RED);
+    lights[RED_MAN] = new Light("*<-=", x + 6, y + 4, RED);
+    lights[YELLOW_LIGHT] = new Light("*", x + 11, y + 5, YELLOW);
+    lights[GREEN_LIGHT] = new Light("*", x + 11, y + 7, GREEN);
+    lights[GREEN_MAN] = new Light("*|-<", x + 6, y + 7, GREEN);
+
+    write("       _____         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |____| |        ", x, ++y, GRAY);
+    write("     |    |/|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("       _||__         ", x, ++y, GRAY);
+    write("      /___ /|        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |    | |        ", x, ++y, GRAY);
+    write("     |____|/         ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("        ||           ", x, ++y, GRAY);
+    write("========||===========", x, ++y, GRAY);
+    write("    /   ||     /     ", x, ++y, GRAY);
+    write("_ /_________ /_      ", x, ++y, GRAY);
+    write("/          /         ", x, ++y, GRAY);
+}
+
+Pole::~Pole() {
+    for (int i = 0; i < sizeof lights / sizeof(lights[0]); ++i)
+        delete lights[i];
+    delete waitLight;
+}
+
+void Pole::setTrafficLights(Pelican::PelicanState state) {
+    static const Light::LightState LightStates[Pelican::YELLOW_STATE + 1][RED_MAN + 1] = {
+        //  red         yellow        green       green man     red man
+        {Light::ON, Light::OFF, Light::OFF, Light::ON, Light::OFF},       // red
+        {Light::OFF, Light::FLASH, Light::OFF, Light::FLASH, Light::OFF}, // y flash
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g time
+        {Light::OFF, Light::OFF, Light::ON, Light::OFF, Light::ON},       // g idle
+        {Light::OFF, Light::ON, Light::OFF, Light::OFF, Light::ON}        // yellow
+    };
+
+    for (int i = RED_LIGHT; i <= RED_MAN; i++) {
+        lights[i]->set(LightStates[state][i]);
+    }
+}
+
+void Pole::setWaitLight(bool pressed) { waitLight->set(pressed ? Light::ON : Light::OFF); }

cmat/Ex22/Pole.h

@@ -0,0 +1,24 @@
+
+#ifndef POLE_H
+#define POLE_H
+
+#include "Light.h"
+#include "Pelican.h"
+
+class Pole {
+  public:
+    Pole(int x, int y);
+    ~Pole();
+
+    void setTrafficLights(Pelican::PelicanState state);
+    void setWaitLight(bool pressed);
+
+  private:
+    enum LightName { RED_LIGHT, YELLOW_LIGHT, GREEN_LIGHT, GREEN_MAN, RED_MAN };
+
+    Light *lights[RED_MAN + 1];
+
+    Light *waitLight;
+};
+
+#endif

cmat/Ex22/Timer.cpp

@@ -0,0 +1,17 @@
+
+
+#include "Timer.h"
+#include "TimerSet.h"
+
+void Timer::timeoutRequest(int seconds) { timeToGo = seconds; }
+
+Timer::Timer() : timeToGo(-1) { TimerSet::Instance().addATimer(this); }
+
+bool Timer::isExpired() {
+    if (timeToGo > 0) {
+        if (--timeToGo == 0) {
+            return true;
+        }
+    }
+    return false;
+}

cmat/Ex22/Timer.h

@@ -0,0 +1,27 @@
+// ======================================================
+//
+// A general-purpose countdown timer
+// To use this class, specialize it
+// and override tick()
+//
+// ======================================================
+
+#ifndef timer_H
+#define timer_H
+
+class Timer {
+  public:
+    Timer();
+
+    void timeoutRequest(int seconds);
+
+    virtual void tick() = 0;
+
+  protected:
+    bool isExpired();
+
+  private:
+    int timeToGo;
+};
+
+#endif

cmat/Ex22/TimerSet.cpp

@@ -0,0 +1,23 @@
+#include "TimerSet.h"
+#include "Timer.h"
+#include <iostream>
+
+TimerSet::TimerSet() : timersInUse(0), previousTime(time(NULL)) {}
+
+void TimerSet::addATimer(Timer *t) { timers[timersInUse++] = t; }
+
+void TimerSet::pollAllTimers() {
+    std::time_t timeNow;
+    if (time(&timeNow) > previousTime) {
+        previousTime = timeNow;
+        for (int i = 0; i < timersInUse; ++i) {
+            timers[i]->tick();
+        }
+    }
+}
+
+TimerSet &TimerSet::Instance() {
+    // Meyer's Singleton implementation
+    static TimerSet pInstance;
+    return pInstance;
+}

cmat/Ex22/TimerSet.h

@@ -0,0 +1,29 @@
+#ifndef TIMERSET_H
+#define TIMERSET_H
+
+#include <ctime>
+
+class Timer;
+
+class TimerSet {
+  public:
+    void pollAllTimers();
+    void addATimer(Timer *);
+
+  private:
+    TimerSet();
+    Timer *timers[40];
+    int timersInUse;
+    std::time_t previousTime;
+
+    //  Meyer's singleton
+  public:
+    static TimerSet &Instance();
+
+  private:
+    // prevent copying and assignment of the singleton
+    TimerSet(const TimerSet &);
+    TimerSet &operator=(const TimerSet &);
+};
+
+#endif

cmat/Ex22/main.cpp

@@ -0,0 +1,29 @@
+
+
+#include "Keyboard.h"
+#include "Pelican.h"
+#include "TimerSet.h"
+
+#include <cctype> // provides toupper()
+
+int main() {
+    Keyboard kbd;
+    Pelican thePelican(30, 0);
+
+    char c = 0;
+
+    while (std::toupper(c) != 'Q') { // loop until 'Q' is pressed
+
+        while (!kbd.isCharAvail()) {
+            TimerSet::Instance().pollAllTimers(); // no key press to process, poll the timers
+        }
+
+        c = kbd.getChar(); // get the character
+        if (c == ' ') {
+            // it's a space, so press the WAIT button
+            thePelican.press();
+        }
+    }
+
+    return 0;
+}

cmat/Ex31/CMakeLists.txt

@@ -0,0 +1,6 @@
+# Ex31
+
+cmat_add_exercise(Ex31
+    SOURCES
+    Main.cpp
+)

cmat/Ex31/Ex31.sln

@@ -0,0 +1,20 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.21005.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Ex31", "Ex31.vcxproj", "{8F266BE3-8B4C-8EDD-744B-50A12A4E07CF}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8F266BE3-8B4C-8EDD-744B-50A12A4E07CF}.Debug|Win32.ActiveCfg = Debug|Win32
+		{8F266BE3-8B4C-8EDD-744B-50A12A4E07CF}.Debug|Win32.Build.0 = Debug|Win32
+		{8F266BE3-8B4C-8EDD-744B-50A12A4E07CF}.Release|Win32.ActiveCfg = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal