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Add RCL prefix

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Miloslav Číž 2018-09-17 17:55:53 +02:00
parent d04750a068
commit 74a146a7cb
2 changed files with 596 additions and 569 deletions
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1069
raycastlib.h
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96
testSDL.c
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@ -10,17 +10,17 @@
//#define RAYCAST_TINY //#define RAYCAST_TINY
#define USE_DIST_APPROX 2 #define RCL_USE_DIST_APPROX 2
// redefine some parameters // redefine some parameters
#define FPS 40 #define FPS 40
#define GRAVITY_ACCELERATION (UNITS_PER_SQUARE * 3) #define GRAVITY_ACCELERATION (RCL_UNITS_PER_SQUARE * 3)
#define PLAYER_JUMP_SPEED 700 #define PLAYER_JUMP_SPEED 700
#define CAMERA_COLL_HEIGHT_BELOW ((3 * UNITS_PER_SQUARE) / 2) #define RCL_CAMERA_COLL_HEIGHT_BELOW ((3 * RCL_UNITS_PER_SQUARE) / 2)
#define HORIZONTAL_FOV (UNITS_PER_SQUARE / 5) #define RCL_HORIZONTAL_FOV (RCL_UNITS_PER_SQUARE / 5)
#define VERTICAL_FOV UNITS_PER_SQUARE // redefine camera vertical FOV #define RCL_VERTICAL_FOV RCL_UNITS_PER_SQUARE // redefine camera vertical FOV
#define PIXEL_FUNCTION pixelFunc #define RCL_PIXEL_FUNCTION pixelFunc
#include "raycastlib.h" #include "raycastlib.h"
@ -49,9 +49,9 @@ int keys[KEYS];
unsigned long frame = 0; unsigned long frame = 0;
Unit zBuffer[SCREEN_WIDTH]; ///< 1D z-buffer for visibility determination. RCL_Unit zBuffer[SCREEN_WIDTH]; ///< 1D z-buffer for visibility determination.
Camera camera; RCL_Camera camera;
uint32_t pixels[SCREEN_WIDTH * SCREEN_HEIGHT]; uint32_t pixels[SCREEN_WIDTH * SCREEN_HEIGHT];
uint32_t pixelCounter[SCREEN_WIDTH * SCREEN_HEIGHT]; uint32_t pixelCounter[SCREEN_WIDTH * SCREEN_HEIGHT];
@ -59,15 +59,15 @@ uint32_t pixelCounter[SCREEN_WIDTH * SCREEN_HEIGHT];
typedef struct typedef struct
{ {
unsigned char *mImage; unsigned char *mImage;
Vector2D mPosition; RCL_Vector2D mPosition;
Unit mHeight; RCL_Unit mHeight;
Unit mPixelSize; RCL_Unit mPixelSize;
} Sprite; } Sprite;
uint32_t palette[256]; uint32_t palette[256];
#define SPRITES 7 #define SPRITES 7
#define SPRITE_MAX_DISTANCE 5 * UNITS_PER_SQUARE #define SPRITE_MAX_DISTANCE 5 * RCL_UNITS_PER_SQUARE
Sprite sprites[SPRITES]; Sprite sprites[SPRITES];
@ -736,16 +736,16 @@ uint8_t rgbToIndex(uint8_t r, uint8_t g, uint8_t b)
return (r & 0b00000111) | ((g & 0b00000111) << 3) | ((b & 0b00000011) << 6); return (r & 0b00000111) | ((g & 0b00000111) << 3) | ((b & 0b00000011) << 6);
} }
uint8_t sampleImage(const unsigned char *image, Unit x, Unit y) uint8_t sampleImage(const unsigned char *image, RCL_Unit x, RCL_Unit y)
{ {
// TODO: optimize // TODO: optimize
x = wrap(x,UNITS_PER_SQUARE); x = RCL_wrap(x,RCL_UNITS_PER_SQUARE);
y = wrap(y,UNITS_PER_SQUARE); y = RCL_wrap(y,RCL_UNITS_PER_SQUARE);
int32_t index = int32_t index =
image[1] * ((image[0] * x) / UNITS_PER_SQUARE) + (image[0] * y) / image[1] * ((image[0] * x) / RCL_UNITS_PER_SQUARE) + (image[0] * y) /
UNITS_PER_SQUARE; RCL_UNITS_PER_SQUARE;
return image[2 + index]; return image[2 + index];
} }
@ -779,7 +779,7 @@ uint8_t addIntensity(uint8_t color, int16_t intensity)
return rgbToIndex(r,g,b); return rgbToIndex(r,g,b);
} }
Unit textureAt(int16_t x, int16_t y) RCL_Unit textureAt(int16_t x, int16_t y)
{ {
if (x >= 0 && x < LEVEL_X_RES && y >= 0 && y < LEVEL_Y_RES) if (x >= 0 && x < LEVEL_X_RES && y >= 0 && y < LEVEL_Y_RES)
return levelTexture[(LEVEL_Y_RES - y -1) * LEVEL_X_RES + x]; return levelTexture[(LEVEL_Y_RES - y -1) * LEVEL_X_RES + x];
@ -787,35 +787,35 @@ Unit textureAt(int16_t x, int16_t y)
return 0; return 0;
} }
Unit floorHeightAt(int16_t x, int16_t y) RCL_Unit floorHeightAt(int16_t x, int16_t y)
{ {
if (x == 6 && (y == 13 || y == 14)) // moving lift if (x == 6 && (y == 13 || y == 14)) // moving lift
return ((absVal(-1 * (frame % 64) + 32)) * UNITS_PER_SQUARE) / 8; return ((RCL_absVal(-1 * (frame % 64) + 32)) * RCL_UNITS_PER_SQUARE) / 8;
if (x >= 0 && x < LEVEL_X_RES && y >= 0 && y < LEVEL_Y_RES) if (x >= 0 && x < LEVEL_X_RES && y >= 0 && y < LEVEL_Y_RES)
return (levelFloor[(LEVEL_Y_RES - y -1) * LEVEL_X_RES + x] * UNITS_PER_SQUARE) / 8; return (levelFloor[(LEVEL_Y_RES - y -1) * LEVEL_X_RES + x] * RCL_UNITS_PER_SQUARE) / 8;
int a = absVal(x - LEVEL_X_RES / 2) - LEVEL_X_RES / 2; int a = RCL_absVal(x - LEVEL_X_RES / 2) - LEVEL_X_RES / 2;
int b = absVal(y - LEVEL_Y_RES / 2) - LEVEL_Y_RES / 2; int b = RCL_absVal(y - LEVEL_Y_RES / 2) - LEVEL_Y_RES / 2;
return (a > b ? a : b) * UNITS_PER_SQUARE; return (a > b ? a : b) * RCL_UNITS_PER_SQUARE;
} }
Unit ceilingHeightAt(int16_t x, int16_t y) RCL_Unit ceilingHeightAt(int16_t x, int16_t y)
{ {
int v = 1024; int v = 1024;
if (x >= 0 && x < LEVEL_X_RES && y >= 0 && y < LEVEL_Y_RES) if (x >= 0 && x < LEVEL_X_RES && y >= 0 && y < LEVEL_Y_RES)
v = levelCeiling[(LEVEL_Y_RES - y -1) * LEVEL_X_RES + x]; v = levelCeiling[(LEVEL_Y_RES - y -1) * LEVEL_X_RES + x];
return (v * UNITS_PER_SQUARE) / 8; return (v * RCL_UNITS_PER_SQUARE) / 8;
} }
/** /**
Draws a scaled sprite on screen in an optimized way. The sprite has to be Draws a scaled sprite on screen in an optimized way. The sprite has to be
square in resolution. square in resolution.
*/ */
void drawSpriteSquare(const unsigned char *sprite, int16_t x, int16_t y, Unit depth, int16_t size) void drawSpriteSquare(const unsigned char *sprite, int16_t x, int16_t y, RCL_Unit depth, int16_t size)
{ {
if (size < 0 || size > 512 || // let's not mess up with the incoming array if (size < 0 || size > 512 || // let's not mess up with the incoming array
sprite[0] != sprite[1]) // only draw square sprites sprite[0] != sprite[1]) // only draw square sprites
@ -825,20 +825,20 @@ void drawSpriteSquare(const unsigned char *sprite, int16_t x, int16_t y, Unit de
// optimization: precompute the indices // optimization: precompute the indices
for (Unit i = 0; i < size; ++i) for (RCL_Unit i = 0; i < size; ++i)
samplingIndices[i] = (i * sprite[0]) / size; samplingIndices[i] = (i * sprite[0]) / size;
x -= size / 2; x -= size / 2;
y -= size / 2; y -= size / 2;
Unit step = UNITS_PER_SQUARE / size; RCL_Unit step = RCL_UNITS_PER_SQUARE / size;
uint8_t c; uint8_t c;
int16_t jTo = size - max(0,y + size - SCREEN_HEIGHT); int16_t jTo = size - max(0,y + size - SCREEN_HEIGHT);
int16_t iTo = size - max(0,x + size - SCREEN_WIDTH); int16_t iTo = size - max(0,x + size - SCREEN_WIDTH);
for (Unit i = max(-1 * x,0); i < iTo; ++i) for (RCL_Unit i = max(-1 * x,0); i < iTo; ++i)
{ {
int16_t xPos = x + i; int16_t xPos = x + i;
@ -847,7 +847,7 @@ void drawSpriteSquare(const unsigned char *sprite, int16_t x, int16_t y, Unit de
int16_t columnLocation = 2 + samplingIndices[i] * sprite[0]; int16_t columnLocation = 2 + samplingIndices[i] * sprite[0];
for (Unit j = max(-1 * y,0); j < jTo; ++j) for (RCL_Unit j = max(-1 * y,0); j < jTo; ++j)
{ {
c = sprite[columnLocation + samplingIndices[j]]; c = sprite[columnLocation + samplingIndices[j]];
@ -864,7 +864,7 @@ void drawSpriteSquare(const unsigned char *sprite, int16_t x, int16_t y, Unit de
Function for drawing a single pixel (like fragment shader). Bottleneck => Function for drawing a single pixel (like fragment shader). Bottleneck =>
should be as fast as possible. should be as fast as possible.
*/ */
void pixelFunc(PixelInfo *pixel) void pixelFunc(RCL_PixelInfo *pixel)
{ {
if (pixel->position.x < 0 || pixel->position.x >= SCREEN_WIDTH || if (pixel->position.x < 0 || pixel->position.x >= SCREEN_WIDTH ||
pixel->position.y < 0 || pixel->position.y >= SCREEN_HEIGHT) pixel->position.y < 0 || pixel->position.y >= SCREEN_HEIGHT)
@ -880,10 +880,10 @@ void pixelFunc(PixelInfo *pixel)
else else
c = pixel->isFloor ? 0b00010001 : 0b00001010; c = pixel->isFloor ? 0b00010001 : 0b00001010;
// int intensity = pixel->depth - 8 * UNITS_PER_SQUARE; // int intensity = pixel->depth - 8 * RCL_UNITS_PER_SQUARE;
int intensity = pixel->depth - 8 * UNITS_PER_SQUARE; int intensity = pixel->depth - 8 * RCL_UNITS_PER_SQUARE;
intensity = intensity < 0 ? 0 : intensity; intensity = intensity < 0 ? 0 : intensity;
intensity = (intensity * 32) / UNITS_PER_SQUARE; intensity = (intensity * 32) / RCL_UNITS_PER_SQUARE;
int32_t color = palette[c]; int32_t color = palette[c];
@ -919,25 +919,25 @@ else
void draw() void draw()
{ {
RayConstraints c; RCL_RayConstraints c;
c.maxHits = 32; c.maxHits = 32;
c.maxSteps = 32; c.maxSteps = 32;
render(camera,floorHeightAt,ceilingHeightAt,textureAt,c); RCL_render(camera,floorHeightAt,ceilingHeightAt,textureAt,c);
Unit previousDepth; RCL_Unit previousDepth;
for (uint8_t i = 0; i < SPRITES; ++i) for (uint8_t i = 0; i < SPRITES; ++i)
{ {
// use Chebyshew distance instead Euclidean, it's faster // use Chebyshew distance instead Euclidean, it's faster
if (absVal(sprites[i].mPosition.x - camera.position.x) > SPRITE_MAX_DISTANCE) if (RCL_absVal(sprites[i].mPosition.x - camera.position.x) > SPRITE_MAX_DISTANCE)
continue; continue;
if (absVal(sprites[i].mPosition.y - camera.position.y) > SPRITE_MAX_DISTANCE) if (RCL_absVal(sprites[i].mPosition.y - camera.position.y) > SPRITE_MAX_DISTANCE)
continue; continue;
PixelInfo pos = mapToScreen(sprites[i].mPosition,sprites[i].mHeight,camera); RCL_PixelInfo pos = RCL_mapToScreen(sprites[i].mPosition,sprites[i].mHeight,camera);
/* /*
if (pos.depth > 0) if (pos.depth > 0)
@ -969,9 +969,9 @@ int main()
#define placeSprite(i,s,X,Y,z,n)\ #define placeSprite(i,s,X,Y,z,n)\
sprites[i].mImage = s;\ sprites[i].mImage = s;\
sprites[i].mPosition.x = X * UNITS_PER_SQUARE + UNITS_PER_SQUARE / 2;\ sprites[i].mPosition.x = X * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2;\
sprites[i].mPosition.y = Y * UNITS_PER_SQUARE + UNITS_PER_SQUARE / 2;\ sprites[i].mPosition.y = Y * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2;\
sprites[i].mHeight = z * UNITS_PER_SQUARE + UNITS_PER_SQUARE / 2;\ sprites[i].mHeight = z * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2;\
sprites[i].mPixelSize = n; sprites[i].mPixelSize = n;
placeSprite(0,sprite1,10,5,1,1000); placeSprite(0,sprite1,10,5,1,1000);
@ -983,11 +983,11 @@ int main()
placeSprite(6,sprite3,16,12,1,3000); placeSprite(6,sprite3,16,12,1,3000);
#undef placeSprite #undef placeSprite
camera.position.x = UNITS_PER_SQUARE * 5; camera.position.x = RCL_UNITS_PER_SQUARE * 5;
camera.position.y = UNITS_PER_SQUARE * 4; camera.position.y = RCL_UNITS_PER_SQUARE * 4;
camera.shear = 0; camera.shear = 0;
camera.direction = 0; camera.direction = 0;
camera.height = UNITS_PER_SQUARE * 2; camera.height = RCL_UNITS_PER_SQUARE * 2;
camera.resolution.x = SCREEN_WIDTH; camera.resolution.x = SCREEN_WIDTH;
camera.resolution.y = SCREEN_HEIGHT; camera.resolution.y = SCREEN_HEIGHT;
@ -1063,7 +1063,7 @@ int main()
int step = 1; int step = 1;
int step2 = 5; int step2 = 5;
Vector2D direction = angleToDirection(camera.direction); RCL_Vector2D direction = RCL_angleToDirection(camera.direction);
direction.x /= 10; direction.x /= 10;
direction.y /= 10; direction.y /= 10;