src/game/world/trace.h


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#pragma once

#include "bsp.h"
#include "../../util/aabb.h"

// quake uses 1 / 32
const F32 BSP_TRACE_EPSILON = 1.f / 64.f;
const F32 BSP_EDGE_TOLERANCE = 1.f / 16.f;

struct BSP_TRACE {
  VEC3 in_start;
  VEC3 in_end;

  U8 hit;
  F32 frac;
  VEC3 point;
  VEC3 normal;
  U32 propid;
  I32 leafid;
  U32 faceid;
  U8 startsolid;
};

extern U8 bsp_trace( BSP_TRACE* trace, BSP* bsp );
extern U8 bsp_trace( BSP_TRACE* trace, BSP* bsp, VEC3 start, VEC3 end );

extern U8 bsp_trace( BSP_TRACE* trace, BSP* bsp, AABB aabb );
extern U8 bsp_trace( BSP_TRACE* trace, BSP* bsp, AABB aabb, VEC3 start, VEC3 end );

extern U8 bsp_trace( BSP_TRACE* trace );
extern U8 bsp_trace( BSP_TRACE* trace, VEC3 start, VEC3 end );