games/raycaster
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Right before bringing in the code to render sprites, but after I restructured to have the sprite data.

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Zed A. Shaw 2025-01-14 10:54:27 -05:00
parent 0828fb584e
commit 93b7faa369
2 changed files with 88 additions and 59 deletions
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76
scratchpad/raycaster_sprites.cpp
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@ -412,44 +412,44 @@ int main(int /*argc*/, char */*argv*/[])
//speed modifiers //speed modifiers
double moveSpeed = frameTime * 3.0; //the constant value is in squares/second double moveSpeed = frameTime * 3.0; //the constant value is in squares/second
double rotSpeed = frameTime * 2.0; //the constant value is in radians/second double rotSpeed = frameTime * 2.0; //the constant value is in radians/second
readKeys();
SDL_Event event; //move forward if no wall in front of you
while(SDL_PollEvent(&event)) { if (keyDown(SDLK_UP))
if(event.type != SDL_KEYDOWN) continue; {
//move forward if no wall in front of you if(worldMap[int(posX + dirX * moveSpeed)][int(posY)] == false) posX += dirX * moveSpeed;
if(event.key.keysym.sym == SDLK_UP) if(worldMap[int(posX)][int(posY + dirY * moveSpeed)] == false) posY += dirY * moveSpeed;
{ }
if(worldMap[int(posX + dirX * moveSpeed)][int(posY)] == false) posX += dirX * moveSpeed; //move backwards if no wall behind you
if(worldMap[int(posX)][int(posY + dirY * moveSpeed)] == false) posY += dirY * moveSpeed; if(keyDown(SDLK_DOWN))
} {
//move backwards if no wall behind you if(worldMap[int(posX - dirX * moveSpeed)][int(posY)] == false) posX -= dirX * moveSpeed;
if(event.key.keysym.sym == SDLK_DOWN) if(worldMap[int(posX)][int(posY - dirY * moveSpeed)] == false) posY -= dirY * moveSpeed;
{ }
if(worldMap[int(posX - dirX * moveSpeed)][int(posY)] == false) posX -= dirX * moveSpeed; //rotate to the right
if(worldMap[int(posX)][int(posY - dirY * moveSpeed)] == false) posY -= dirY * moveSpeed; if(keyDown(SDLK_RIGHT))
} {
//rotate to the right //both camera direction and camera plane must be rotated
if(event.key.keysym.sym == SDLK_RIGHT) double oldDirX = dirX;
{ dirX = dirX * cos(-rotSpeed) - dirY * sin(-rotSpeed);
//both camera direction and camera plane must be rotated dirY = oldDirX * sin(-rotSpeed) + dirY * cos(-rotSpeed);
double oldDirX = dirX; double oldPlaneX = planeX;
dirX = dirX * cos(-rotSpeed) - dirY * sin(-rotSpeed); planeX = planeX * cos(-rotSpeed) - planeY * sin(-rotSpeed);
dirY = oldDirX * sin(-rotSpeed) + dirY * cos(-rotSpeed); planeY = oldPlaneX * sin(-rotSpeed) + planeY * cos(-rotSpeed);
double oldPlaneX = planeX; }
planeX = planeX * cos(-rotSpeed) - planeY * sin(-rotSpeed); //rotate to the left
planeY = oldPlaneX * sin(-rotSpeed) + planeY * cos(-rotSpeed); if(keyDown(SDLK_LEFT))
} {
//rotate to the left //both camera direction and camera plane must be rotated
if(event.key.keysym.sym == SDLK_LEFT) double oldDirX = dirX;
{ dirX = dirX * cos(rotSpeed) - dirY * sin(rotSpeed);
//both camera direction and camera plane must be rotated dirY = oldDirX * sin(rotSpeed) + dirY * cos(rotSpeed);
double oldDirX = dirX; double oldPlaneX = planeX;
dirX = dirX * cos(rotSpeed) - dirY * sin(rotSpeed); planeX = planeX * cos(rotSpeed) - planeY * sin(rotSpeed);
dirY = oldDirX * sin(rotSpeed) + dirY * cos(rotSpeed); planeY = oldPlaneX * sin(rotSpeed) + planeY * cos(rotSpeed);
double oldPlaneX = planeX; }
planeX = planeX * cos(rotSpeed) - planeY * sin(rotSpeed); if(keyDown(SDLK_ESCAPE))
planeY = oldPlaneX * sin(rotSpeed) + planeY * cos(rotSpeed); {
} break;
} }
} }
} }

71
sfmlcaster.cpp
View file

@ -11,6 +11,27 @@
using matrix::Matrix; using matrix::Matrix;
using namespace fmt; using namespace fmt;
#define texWidth 64 // must be power of two
#define texHeight 64 // must be power of two
#define numSprites 1
#define numTextures 11
struct Sprite {
double x;
double y;
int texture;
};
const int RAY_VIEW_WIDTH=1280;
const int RAY_VIEW_HEIGHT=720;
const int RAY_VIEW_X=0;
const int RAY_VIEW_Y=0;
const int SCREEN_HEIGHT=RAY_VIEW_HEIGHT;
const int SCREEN_WIDTH=1280;
Matrix MAP{ Matrix MAP{
{8,8,8,8,8,8,8,8,8}, {8,8,8,8,8,8,8,8,8},
{8,0,2,0,0,0,0,0,8}, {8,0,2,0,0,0,0,0,8},
@ -23,14 +44,6 @@ Matrix MAP{
{8,8,8,8,8,8,8,8,8} {8,8,8,8,8,8,8,8,8}
}; };
const int RAY_VIEW_WIDTH=1920;
const int RAY_VIEW_HEIGHT=1080;
const int RAY_VIEW_X=0;
const int RAY_VIEW_Y=0;
const int SCREEN_HEIGHT=RAY_VIEW_HEIGHT;
const int SCREEN_WIDTH=1920;
const int MAP_SIZE=matrix::width(MAP); const int MAP_SIZE=matrix::width(MAP);
const int TILE_SIZE=RAY_VIEW_HEIGHT / MAP_SIZE; const int TILE_SIZE=RAY_VIEW_HEIGHT / MAP_SIZE;
int PITCH=0; int PITCH=0;
@ -56,17 +69,24 @@ double planeY = 0.66;
#define rgba_color(r,g,b,a) (r<<(0*8))|(g<<(1*8))|(b<<(2*8))|(a<<(3*8)) #define rgba_color(r,g,b,a) (r<<(0*8))|(g<<(1*8))|(b<<(2*8))|(a<<(3*8))
#define gray_color(c) rgba_color(c, c, c, 255) #define gray_color(c) rgba_color(c, c, c, 255)
std::vector<uint32_t> texture[8]; Sprite sprites[numSprites] = {
#define texWidth 256 // must be power of two {20.5, 11.5, 8}
#define texHeight 256 // must be power of two };
double ZBuffer[RAY_VIEW_WIDTH];
int spriteOrder[numSprites];
double spriteDistance[numSprites];
std::vector<uint32_t> texture[numTextures];
#define pixcoord(X, Y) ((Y) * RAY_VIEW_WIDTH) + (X) #define pixcoord(X, Y) ((Y) * RAY_VIEW_WIDTH) + (X)
uint32_t pixels[RAY_VIEW_WIDTH * RAY_VIEW_HEIGHT] = {0}; uint32_t pixels[RAY_VIEW_WIDTH * RAY_VIEW_HEIGHT] = {0};
sf::Texture view_texture; sf::Texture view_texture;
sf::Sprite view_sprite; sf::Sprite view_sprite;
void sortSprites(int *order, double *dist, int amount);
void loadImage(std::vector<uint32_t>& texture, const char *filename) { void loadImage(std::vector<uint32_t>& texture, const char *filename) {
sf::Image img; sf::Image img;
bool good = img.loadFromFile(filename); bool good = img.loadFromFile(filename);
@ -76,18 +96,22 @@ void loadImage(std::vector<uint32_t>& texture, const char *filename) {
} }
void load_textures() { void load_textures() {
for(int i = 0; i < 8; i++) { for(int i = 0; i < numTextures; i++) {
texture[i].resize(texWidth * texHeight); texture[i].resize(texWidth * texHeight);
} }
loadImage(texture[0], "pics/tile16.png"); loadImage(texture[0], "pics/eagle.png");
loadImage(texture[1], "pics/tile02.png"); loadImage(texture[1], "pics/redbrick.png");
loadImage(texture[2], "pics/tile03.png"); loadImage(texture[2], "pics/purplestone.png");
loadImage(texture[3], "pics/tile32.png"); loadImage(texture[3], "pics/greystone.png");
loadImage(texture[4], "pics/tile05.png"); loadImage(texture[4], "pics/bluestone.png");
loadImage(texture[5], "pics/tile17.png"); loadImage(texture[5], "pics/mossy.png");
loadImage(texture[6], "pics/tile10.png"); loadImage(texture[6], "pics/wood.png");
loadImage(texture[7], "pics/tile01.png"); loadImage(texture[7], "pics/colorstone.png");
loadImage(texture[8], "pics/barrel.png");
loadImage(texture[9], "pics/pillar.png");
loadImage(texture[10], "pics/greenlight.png");
} }
void draw_sfml_rect(sf::RenderWindow &window, sf::Vector2f pos, sf::Vector2f size, uint8_t color) { void draw_sfml_rect(sf::RenderWindow &window, sf::Vector2f pos, sf::Vector2f size, uint8_t color) {
@ -412,3 +436,8 @@ int main() {
return 0; return 0;
} }
void sortSprites(int* order, double* dist, int amount)
{
}