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#ifndef _COLLISION_H
#define _COLLISION_H
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Collision.h *
* *
* These functions handle collision detection. They provide a mixture of *
* bounding box collision detection and (if the former returns true) pixel *
* perfect collision detection. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "constants.h"
#include "additional/apvector.h"
#include "bullettype.h"
struct spr_mask // Sprite Mask
{
int bb_height; // Bounding-box height of sprite
int bb_width; // Bounding-box width of sprite
int max_chunk; // The number of the last 32 bit chunk in the sprite's bitmap
unsigned long int sp_mask[NUM_Y][NUM_CHUNKS]; // The (NUM_Y x (NUM_CHUNKS x 32)) bit Sprite Mask
};
typedef struct spr_mask spr_mask;
void init_sp_bb( apvector<spr_mask> & mask_list );
void mk_spr_mask (BITMAP *s3, spr_mask & mask);
int check_ppcollision (const spr_mask & mask1 , int spr1x, int spr1y, const spr_mask & mask2, int spr2x, int spr2y);
#endif
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