36 lines
652 B
C
36 lines
652 B
C
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#include "types.h"
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#include "fixed.h"
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#include "point.h"
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#ifndef VELOCITY_H
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#define VELOCITY_H
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typedef struct VELOCITY {
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FIXED dx;
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FIXED dy;
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} ALIGN(4) VELOCITY;
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static inline VELOCITY createVelocity (FIXED dx, FIXED dy) {
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// Create velocity from data
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VELOCITY temp;
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temp.dx = dx;
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temp.dy = dy;
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return temp;
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}
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static inline VELOCITY addVelocities (VELOCITY *a, VELOCITY *b) {
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// Add two velocities
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VELOCITY temp;
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temp.dx = a->dx + b->dx;
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temp.dy = a->dy + b->dy;
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return temp;
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}
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static inline void updatePoint (POINT *pt, VELOCITY *vel) {
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// Update a point with a velocity
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pt->x += vel->dx;
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pt->y += vel->dy;
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}
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#endif // VELOCITY_H
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