williamjcm/raycastlib
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Move texcoords to compile time

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This commit is contained in:
Miloslav Číž 2018-09-16 14:24:32 +02:00
parent 3ef4c4fce9
commit e33d02ccec
1 changed files with 25 additions and 18 deletions
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43
raycastlib.h
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@ -38,6 +38,10 @@
#define USE_DIST_APPROX 2
#endif
#ifndef COMPUTE_WALL_TEXCOORDS
#define COMPUTE_WALL_TEXCOORDS 1
#endif
#ifndef USE_COS_LUT
#define USE_COS_LUT 0 /**< type of look up table for cos function:
0: none (compute)
@ -173,7 +177,6 @@ typedef struct
{
uint16_t maxHits;
uint16_t maxSteps;
uint8_t computeTextureCoords; ///< Turns texture coords on/off.
} RayConstraints;
/**
@ -346,7 +349,6 @@ Unit _camResYLimit = 0;
Unit _middleRow = 0;
ArrayFunction _floorFunction = 0;
ArrayFunction _ceilFunction = 0;
uint8_t _computeTextureCoords = 0;
Unit _fHorizontalDepthStart = 0;
Unit _cHorizontalDepthStart = 0;
int16_t _cameraHeightScreen = 0;
@ -735,30 +737,38 @@ void castRayMultiHit(Ray ray, ArrayFunction arrayFunc, ArrayFunction typeFunc,
if (no.y > 0)
{
h.direction = 0;
h.textureCoord = constraints.computeTextureCoords ?
wrap(currentPos.x,UNITS_PER_SQUARE) : 0;
#if COMPUTE_WALL_TEXCOORDS == 1
h.textureCoord = wrap(currentPos.x,UNITS_PER_SQUARE);
#endif
}
else if (no.x > 0)
{
h.direction = 1;
h.textureCoord = constraints.computeTextureCoords ?
wrap(UNITS_PER_SQUARE - currentPos.y,UNITS_PER_SQUARE) : 0;
#if COMPUTE_WALL_TEXCOORDS == 1
h.textureCoord =
wrap(UNITS_PER_SQUARE - currentPos.y,UNITS_PER_SQUARE);
#endif
}
else if (no.y < 0)
{
h.direction = 2;
h.textureCoord = constraints.computeTextureCoords ?
wrap(UNITS_PER_SQUARE - currentPos.x,UNITS_PER_SQUARE) : 0;
#if COMPUTE_WALL_TEXCOORDS == 1
h.textureCoord =
wrap(UNITS_PER_SQUARE - currentPos.x,UNITS_PER_SQUARE);
#endif
}
else
{
h.direction = 3;
h.textureCoord = constraints.computeTextureCoords ?
wrap(currentPos.y,UNITS_PER_SQUARE) : 0;
#if COMPUTE_WALL_TEXCOORDS == 1
h.textureCoord = wrap(currentPos.y,UNITS_PER_SQUARE);
#endif
}
#if COMPUTE_WALL_TEXCOORDS == 1
if (_rollFunction != 0)
h.doorRoll = _rollFunction(currentSquare.x,currentSquare.y);
#endif
hitResults[*hitResultsLen] = h;
@ -1040,7 +1050,7 @@ void _columnFunctionSimple(HitResult *hits, uint16_t hitCount, uint16_t x,
uint8_t goOn = 1;
if (_rollFunction != 0)
if (_rollFunction != 0 && COMPUTE_WALL_TEXCOORDS == 1)
{
if (hit.arrayValue == 0)
{
@ -1131,7 +1141,7 @@ void _columnFunctionSimple(HitResult *hits, uint16_t hitCount, uint16_t x,
p.isFloor = 1;
p.depth = dist;
#if ROLL_TEXTURE_COORDS == 1
#if ROLL_TEXTURE_COORDS == 1 && COMPUTE_WALL_TEXCOORDS == 1
p.hit.textureCoord -= p.hit.doorRoll;
#endif
@ -1139,8 +1149,9 @@ void _columnFunctionSimple(HitResult *hits, uint16_t hitCount, uint16_t x,
{
p.position.y = y;
if (_computeTextureCoords)
p.textureCoordY = (coordHelper * UNITS_PER_SQUARE) / wallHeightScreen;
#if COMPUTE_WALL_TEXCOORDS == 1
p.textureCoordY = (coordHelper * UNITS_PER_SQUARE) / wallHeightScreen;
#endif
_pixelFunction(&p);
@ -1179,8 +1190,6 @@ void render(Camera cam, ArrayFunction floorHeightFunc,
_fHorizontalDepthStart = _middleRow + halfResY;
_cHorizontalDepthStart = _middleRow - halfResY;
_computeTextureCoords = constraints.computeTextureCoords;
_startFloorHeight = floorHeightFunc(
divRoundDown(cam.position.x,UNITS_PER_SQUARE),
divRoundDown(cam.position.y,UNITS_PER_SQUARE)) -1 * cam.height;
@ -1208,7 +1217,6 @@ void renderSimple(Camera cam, ArrayFunction floorHeightFunc,
_camera = cam;
_camResYLimit = cam.resolution.y - 1;
_middleRow = cam.resolution.y / 2;
_computeTextureCoords = constraints.computeTextureCoords;
_rollFunction = rollFunc;
_cameraHeightScreen =
@ -1480,7 +1488,6 @@ void initRayConstraints(RayConstraints *constraints)
{
constraints->maxHits = 1;
constraints->maxSteps = 20;
constraints->computeTextureCoords = 1;
}
#endif