#define BLOCK_SIZE 16

typedef struct Body {
	BodyType type;
	int active;
	int generation;
	vec2 pos;
	vec2 size;
	vec2 vel;
	vec2 accel;
} Body;

typedef struct BlockmapNode BlockmapNode;
struct BlockmapNode {
	BodyID id;
	BlockmapNode *next;
};

typedef struct TestCollision TestCollision;
struct TestCollision {
	BodyID a, b;
};

void phxmapcollision(Body *);
void phxbodycollision(Body *, Body *);

int phxaabbcheck(Body *a, Body *b);
void phxcollisionmap(Body *a);
void phxaabbresolv(Body *a, Body *b, vec2 p, vec2 n);

int phxenqevent(CollisionEvent *ev);
int phxdeqevent(CollisionEvent *ev);

void __phxbroadphasereset(void);
void __phxbroadphase(int n, BodyID bid[n]);
void __phxnarrowphase(int n, TestCollision coll[n]);

Body   *__getbodydata(BodyID id);
BodyID  __getbodyid(Body *);

extern int  phxmapwidth, phxmapheight;
extern int *phxmapbuffer;

extern Body phxbodypool[];
extern int  phxbodypoolsize;