forked from archive/yeti3dpro
242 lines
5.6 KiB
C
242 lines
5.6 KiB
C
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#include <SDL3/SDL.h>
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#define SDL_MAIN_USE_CALLBACKS
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#include <SDL3/SDL_main.h>
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#include "game.h"
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#include "maps.h"
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#define MAXFPS (60)
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static yeti_t yeti;
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static u16 backbuffer[YETI_FRAMEBUFFER_WIDTH * YETI_FRAMEBUFFER_HEIGHT];
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static SDL_Window *window = NULL;
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static SDL_Renderer *renderer = NULL;
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static SDL_Texture *texture = NULL;
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static bool focused = true;
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static Sint64 now = 0, then = 0;
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static int requested_map = -1;
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static int screenshot_idx = 0;
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static void die(const char *fmt, ...)
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{
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static char error[1024];
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va_list ap;
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va_start(ap, fmt);
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SDL_vsnprintf(error, sizeof(error), fmt, ap);
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va_end(ap);
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, error);
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SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", error, NULL);
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exit(1);
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}
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static void dump_textures(void)
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{
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int i;
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SDL_Palette *pal;
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pal = SDL_CreatePalette(256);
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for (i = 0; i < pal->ncolors; i++)
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{
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pal->colors[i].r = palette[i][0];
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pal->colors[i].g = palette[i][1];
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pal->colors[i].b = palette[i][2];
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pal->colors[i].a = 255;
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}
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for (i = 0; i < TEXTURE_MAX; i++)
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{
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char filename[256];
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SDL_Surface *surf;
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surf = SDL_CreateSurfaceFrom(TEXTURE_WIDTH, TEXTURE_HEIGHT, SDL_PIXELFORMAT_INDEX8, textures[i], TEXTURE_WIDTH * sizeof(u8));
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SDL_SetSurfacePalette(surf, pal);
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SDL_FlipSurface(surf, SDL_FLIP_VERTICAL);
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SDL_snprintf(filename, sizeof(filename), "texture%03d.bmp", i);
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SDL_SaveBMP(surf, filename);
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SDL_DestroySurface(surf);
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}
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SDL_DestroyPalette(pal);
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}
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SDL_AppResult SDL_AppInit(void **appstate, int argc, char **argv)
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{
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Uint32 format;
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if (!SDL_Init(SDL_INIT_VIDEO))
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die(SDL_GetError());
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window = SDL_CreateWindow(YETI_STR_CAPTION, YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT, SDL_WINDOW_RESIZABLE | SDL_WINDOW_MAXIMIZED);
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if (!window)
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die(SDL_GetError());
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SDL_SetWindowRelativeMouseMode(window, focused);
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SDL_SetWindowMinimumSize(window, YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT);
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renderer = SDL_CreateRenderer(window, NULL);
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if (!renderer)
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die(SDL_GetError());
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SDL_SetRenderVSync(renderer, 1);
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SDL_SetRenderLogicalPresentation(renderer, YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT, SDL_LOGICAL_PRESENTATION_LETTERBOX);
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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SDL_RenderClear(renderer);
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SDL_RenderPresent(renderer);
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texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_XBGR1555, SDL_TEXTUREACCESS_STREAMING, YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT);
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if (!texture)
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die(SDL_GetError());
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SDL_SetTextureScaleMode(texture, SDL_SCALEMODE_NEAREST);
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yeti_init(&yeti, backbuffer, backbuffer, textures, palette);
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yeti_init_lua(&yeti, YETI_GAMMA);
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game_init(&yeti);
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/* get requested map */
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if (argc > 1)
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{
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requested_map = SDL_atoi(argv[1]);
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SDL_Log("Loading map %d", requested_map);
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game_load_map(&yeti, maps[requested_map]);
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}
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else
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{
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game_load_map(&yeti, &map_e1m1);
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}
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game_goto(&yeti.game, GAME_MODE_PLAY);
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/* start counting time */
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then = SDL_GetTicks();
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return SDL_APP_CONTINUE;
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}
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void do_frame(Sint64 dt)
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{
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static Sint64 frame_delta = 1000;
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const bool *keys = SDL_GetKeyboardState(NULL);
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yeti.keyboard.state.up = keys[SDL_SCANCODE_UP] || keys[SDL_SCANCODE_W];
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yeti.keyboard.state.down = keys[SDL_SCANCODE_DOWN] || keys[SDL_SCANCODE_S];
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yeti.keyboard.state.left = keys[SDL_SCANCODE_LEFT];
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yeti.keyboard.state.right = keys[SDL_SCANCODE_RIGHT];
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yeti.keyboard.state.a = keys[SDL_SCANCODE_RCTRL];
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yeti.keyboard.state.b = keys[SDL_SCANCODE_SPACE];
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yeti.keyboard.state.l = keys[SDL_SCANCODE_A];
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yeti.keyboard.state.r = keys[SDL_SCANCODE_Z];
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yeti.keyboard.state.select = keys[SDL_SCANCODE_ESCAPE];
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frame_delta += dt;
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if (frame_delta > (1000 / MAXFPS))
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{
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game_loop(&yeti);
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frame_delta = 0;
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}
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}
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SDL_AppResult SDL_AppIterate(void *appstate)
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{
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void *pixels;
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int pitch;
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/* speed limiter */
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now = SDL_GetTicks();
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do_frame(now - then);
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then = now;
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if (SDL_LockTexture(texture, NULL, &pixels, &pitch))
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{
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SDL_memcpy(pixels, backbuffer, sizeof(backbuffer));
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SDL_UnlockTexture(texture);
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}
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SDL_RenderClear(renderer);
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SDL_RenderTexture(renderer, texture, NULL, NULL);
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SDL_RenderPresent(renderer);
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return SDL_APP_CONTINUE;
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}
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static bool file_exists(const char *filename)
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{
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SDL_IOStream *io = SDL_IOFromFile(filename, "rb");
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if (io)
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{
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SDL_CloseIO(io);
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return true;
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}
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return false;
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}
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SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
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{
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switch (event->type)
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{
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case SDL_EVENT_QUIT:
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return SDL_APP_SUCCESS;
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case SDL_EVENT_KEY_DOWN:
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if (event->key.scancode == SDL_SCANCODE_ESCAPE)
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{
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focused = !focused;
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SDL_SetWindowRelativeMouseMode(window, focused);
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}
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else if (event->key.scancode == SDL_SCANCODE_F12)
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{
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SDL_Surface *screen;
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char filename[256];
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screen = SDL_CreateSurfaceFrom(YETI_FRAMEBUFFER_WIDTH, YETI_FRAMEBUFFER_HEIGHT, SDL_PIXELFORMAT_XBGR1555, backbuffer, YETI_FRAMEBUFFER_WIDTH * sizeof(u16));
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if (!screen)
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die("%s", SDL_GetError());
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SDL_snprintf(filename, sizeof(filename), "yeti%03d.bmp", screenshot_idx++);
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while (file_exists(filename))
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SDL_snprintf(filename, sizeof(filename), "yeti%03d.bmp", screenshot_idx++);
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SDL_SaveBMP(screen, filename);
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SDL_Log("Saved screenshot %s", filename);
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SDL_DestroySurface(screen);
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}
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break;
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case SDL_EVENT_MOUSE_MOTION:
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if (focused)
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{
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yeti.camera->p += fl2f(event->motion.yrel);
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yeti.camera->t += fl2f(event->motion.xrel);
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}
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break;
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}
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return SDL_APP_CONTINUE;
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}
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void SDL_AppQuit(void *appstate, SDL_AppResult result)
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{
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if (window) SDL_DestroyWindow(window);
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if (renderer) SDL_DestroyRenderer(renderer);
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if (texture) SDL_DestroyTexture(texture);
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SDL_Quit();
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}
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