collision.h

/*
 * See Licensing and Copyright notice in naev.h
 */
#pragma once
 
#include "nxml.h"
#include "opengl.h"
#include "physics.h"
 
typedef struct CollPoly_ {
   float *x; 
   float *y; 
   float xmin; 
   float xmax; 
   float ymin; 
   float ymax; 
   int npt; 
} CollPoly;
 
/* Loads a polygon data from xml. */
void LoadPolygon( CollPoly *polygon, xmlNodePtr node );
void FreePolygon( CollPoly *polygon );
 
/* Rotates a polygon. */
void RotatePolygon( CollPoly *rpolygon, CollPoly *ipolygon, float theta );
 
/* Returns 1 if collision is detected */
int CollideSprite( const glTexture* at, const int asx, const int asy, const vec2* ap,
      const glTexture* bt, const int bsx, const int bsy, const vec2* bp,
      vec2* crash);
int CollideLineLine( double s1x, double s1y, double e1x, double e1y,
      double s2x, double s2y, double e2x, double e2y, vec2* crash );
int CollideLineSprite( const vec2* ap, double ad, double al,
      const glTexture* bt, const int bsx, const int bsy, const vec2* bp,
      vec2 crash[2]);
int CollideCirclePolygon( const vec2* ap, double ar,
      const CollPoly* bt, const vec2* bp, vec2 crash[2] );
int CollideCircleSprite( const vec2 *ap, double ar, const glTexture* bt,
      const int bsx, const int bsy, const vec2* bp,vec2* crash );
int CollideLinePolygon( const vec2* ap, double ad, double al,
      const CollPoly* bt, const vec2* bp, vec2 crash[2] );
int CollideSpritePolygon( const CollPoly* at, const vec2* ap,
      const glTexture* bt, const int bsx, const int bsy, const vec2* bp,
      vec2* crash );
int CollidePolygon( const CollPoly* at, const vec2* ap,
      const CollPoly* bt, const vec2* bp, vec2* crash );
int CollideLineCircle( const vec2* p1, const vec2* p2,
      const vec2 *cc, double cr, vec2 crash[2] );
int CollideCircleCircle( const vec2 *p1, double r1,
      const vec2 *p2, double r2, vec2 crash[2] );
 
/* Intersection area. */
double CollideCircleIntersection( const vec2 *p1, double r1,
      const vec2 *p2, double r2 );