porterskyandQwen 3.8 27B
a65e84e796
Extend the Ex42 observer pattern with Hint objects so each observer receives the reason for the update instead of querying the subject: - Subject::notify() and Observer::update() now take a const Hint& argument. - Add LightHint and WaitHint carrying the traffic light state and WAIT button state, defined in Pelican.h. - Pole dispatches on hint type using dynamic_cast. - The Pole constructor sets its initial lights directly from the Pelican's current state, since no notification is sent at startup. Stopgap until the initial update is handled properly. Co-authored-by: Qwen 3.8 27B <qwen3.8_27b-q3_k_xl@lmstudio.local>
29 lines
499 B
C++
29 lines
499 B
C++
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#ifndef POLE_H
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#define POLE_H
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#include "Light.h"
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#include "Observer.h"
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#include "Pelican.h"
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class Pole : public Observer {
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public:
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Pole(int x, int y, Pelican &p);
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~Pole();
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void setTrafficLights(Pelican::PelicanState state);
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void setWaitLight(bool pressed);
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void update(const Hint& hint);
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private:
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Pelican &myPelican;
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enum LightName { RED_LIGHT, YELLOW_LIGHT, GREEN_LIGHT, GREEN_MAN, RED_MAN };
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Light *lights[RED_MAN + 1];
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Light *waitLight;
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};
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#endif
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