29 lines
545 B
C
29 lines
545 B
C
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#ifndef BALL_H
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#define BALL_H
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#include "GraphicsObject.h"
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//#include "PhysicsObject.h"
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class Ball : public GraphicsObject
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{
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public:
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Ball() : GraphicsObject(&Ball::SetX, this) // pointer to self (specific instance)
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{
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instance_num = ++instance_counter;
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}
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static void SetX(int &x, void *instance)
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{
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Ball *ball = static_cast<Ball*>(instance);
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ball->x = ball->instance_num; // prove we're accessing the right one
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return;
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}
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private:
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static int instance_counter;
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int instance_num;
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};
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int Ball::instance_counter = 0;
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#endif
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