diff options
Diffstat (limited to 'src/sdl/graphics.c')
| -rw-r--r-- | src/sdl/graphics.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/sdl/graphics.c b/src/sdl/graphics.c new file mode 100644 index 0000000..fa03f49 --- /dev/null +++ b/src/sdl/graphics.c @@ -0,0 +1,220 @@ +#include <SDL/SDL.h> +#include "../PHL.h" +#include "../game.h" +#include "../qda.h" +#include "graphics.h" + +SDL_Surface* screen = NULL; +SDL_Surface* drawbuffer = NULL; +SDL_Surface* backbuffer = NULL; + +SDL_Color PHL_NewRGB(uint8_t r, uint8_t g, uint8_t b) +{ + SDL_Color ret = {.r = r, .b = b, .g = g}; + return ret; +} + +void PHL_GraphicsInit() +{ + if ( SDL_Init(SDL_INIT_VIDEO) < 0) { + fprintf(stderr, "Error"); + SDL_Delay(5000); + exit(EXIT_FAILURE); + } + + SDL_ShowCursor(SDL_DISABLE); + + uint32_t flags = SDL_HWSURFACE|SDL_DOUBLEBUF; + #ifdef PANDORA + flags |= SDL_FULLSCREEEN; + #endif + screen = SDL_SetVideoMode(640, 480, 0, flags); + drawbuffer = screen; + backbuffer = PHL_NewSurface(640, 480); +} + +void PHL_GraphicsExit() +{ + SDL_FreeSurface(backbuffer); + SDL_Quit(); +} + +static uint32_t tframe; +void PHL_StartDrawing() +{ + tframe = SDL_GetTicks() + 1000/60; + PHL_ResetDrawbuffer(); +} +void PHL_EndDrawing() +{ + SDL_Flip(screen); + while(SDL_GetTicks()<tframe) + SDL_Delay(10); +} + +void PHL_ForceScreenUpdate() +{ + +} + +void PHL_SetDrawbuffer(PHL_Surface surf) +{ + drawbuffer = surf; +} +void PHL_ResetDrawbuffer() +{ + drawbuffer = screen; +} + +//PHL_RGB PHL_NewRGB(int r, int g, int b); +void PHL_SetColorKey(PHL_Surface surf, int r, int g, int b) +{ + SDL_SetColorKey(surf, SDL_SRCCOLORKEY, SDL_MapRGB(surf->format, r, g, b)); +} + +PHL_Surface PHL_NewSurface(int w, int h) +{ + return SDL_CreateRGBSurface(0, w, h, 32, 0, 0, 0, 0); +} +void PHL_FreeSurface(PHL_Surface surf) +{ + SDL_FreeSurface(surf); +} + +//PHL_Surface PHL_LoadBMP(char* fname); +PHL_Surface PHL_LoadBMP(int index) +{ + SDL_Surface* surf; + + FILE* f; + if ( (f = fopen("data/bmp.qda", "rb")) ) { + uint8_t* QDAFile = (uint8_t*)malloc(headers[index].size); + fseek(f, headers[index].offset, SEEK_SET); + fread(QDAFile, 1, headers[index].size, f); + fclose(f); + + PHL_RGB palette[20][18]; + + uint16_t w, h; + + //Read data from header + memcpy(&w, &QDAFile[18], 2); + memcpy(&h, &QDAFile[22], 2); + + surf = PHL_NewSurface(w * 2, h * 2); + //surf = PHL_NewSurface(200, 200); + + //Load Palette + int dx, dy; + int count = 0; + for (dx = 0; dx < 20; dx++) { + for (dy = 0; dy < 16; dy++) { + palette[dx][dy].b = QDAFile[54 + count]; + palette[dx][dy].g = QDAFile[54 + count + 1]; + palette[dx][dy].r = QDAFile[54 + count + 2]; + count += 4; + } + } + + for (dx = 0; dx < w; dx++) { + for (dy = 0; dy < h; dy++) { + + int pix = dx + w * dy; + int px = QDAFile[1078 + pix] / 16; + int py = QDAFile[1078 + pix] % 16; + //Get transparency from first palette color + if (dx == 0 && dy == 0) { + //Darkness special case + if (index == 27) { + SDL_SetColorKey(surf, SDL_SRCCOLORKEY, SDL_MapRGB(surf->format, 0x00, 0x00, 0x00)); + }else{ + SDL_SetColorKey(surf, SDL_SRCCOLORKEY, SDL_MapRGB(surf->format, palette[0][0].r, palette[0][0].g, palette[0][0].b)); + } + } + + PHL_RGB c = palette[px][py]; + + //PHL_DrawRect(dx * 2, dy * 2, 2, 2, c); + SDL_Rect rect = {dx * 2, (h-1-dy) * 2, 2, 2}; + SDL_FillRect(surf, &rect, SDL_MapRGB(surf->format, c.r, c.g, c.b)); + } + } + free(QDAFile); + } + + return surf; +} + +void PHL_DrawRect(int x, int y, int w, int h, SDL_Color col) +{ + SDL_Rect rect = {x, y, w, h}; + + SDL_FillRect(drawbuffer, &rect, SDL_MapRGB(drawbuffer->format, col.r, col.g, col.b)); +} + +void PHL_DrawSurface(double x, double y, PHL_Surface surface) +{ + if (quakeTimer > 0) { + int val = quakeTimer % 4; + if (val == 0) { + y -= 1; + } else if (val == 2) { + y += 1; + } + } + + SDL_Rect offset; + offset.x = x; + offset.y = y; + + SDL_BlitSurface(surface, NULL, drawbuffer, &offset); +} +void PHL_DrawSurfacePart(double x, double y, int cropx, int cropy, int cropw, int croph, PHL_Surface surface) +{ + if (quakeTimer > 0) { + int val = quakeTimer % 4; + if (val == 0) { + y -= 1; + }else if (val == 2) { + y += 1; + } + } + + SDL_Rect crop, offset; + crop.x = cropx; + crop.y = cropy; + crop.w = cropw; + crop.h = croph; + + offset.x = x; + offset.y = y; + + SDL_BlitSurface(surface, &crop, drawbuffer, &offset); +} + +void PHL_DrawBackground(PHL_Background back, PHL_Background fore) +{ + PHL_DrawSurface(0, 0, backbuffer); +} +void PHL_UpdateBackground(PHL_Background back, PHL_Background fore) +{ + PHL_SetDrawbuffer(backbuffer); + + int xx, yy; + + for (yy = 0; yy < 12; yy++) + { + for (xx = 0; xx < 16; xx++) + { + //Draw Background tiles + PHL_DrawSurfacePart(xx * 40, yy * 40, back.tileX[xx][yy] * 40, back.tileY[xx][yy] * 40, 40, 40, images[imgTiles]); + + //Only draw foreground tile if not a blank tile + if (fore.tileX[xx][yy] != 0 || fore.tileY[xx][yy] != 0) { + PHL_DrawSurfacePart(xx * 40, yy * 40, fore.tileX[xx][yy] * 40, fore.tileY[xx][yy] * 40, 40, 40, images[imgTiles]); + } + } + } + + PHL_ResetDrawbuffer(); +} |