2 files changed, 131 insertions, 0 deletions
diff --git a/frontends/sdl/meson.build b/frontends/sdl/meson.build
new file mode 100644
index 0000000..64d70e4
--- /dev/null
+++ b/frontends/sdl/meson.build
@@ -0,0 +1,10 @@
+src = ['sdl_ui.c']
+
+threads = dependency('threads')
+sdl = dependency('SDl2')
+ttf = dependency('SDL2_ttf')
+
+executable('cetris', src,
+    dependencies: [threads, sdl, ttf],
+    include_directories: cetris_inc,
+    install: false)
diff --git a/frontends/sdl/sdl_ui.c b/frontends/sdl/sdl_ui.c
new file mode 100644
index 0000000..3584c9d
--- /dev/null
+++ b/frontends/sdl/sdl_ui.c
@@ -0,0 +1,121 @@
+#define SDL_MAIN_HANDLED
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_ttf.h>
+#include <pthread.h>
+#include <cetris.h>
+#include <unistd.h>
+
+#define W 480
+#define H 640
+
+#define X_OFFSET 25
+#define Y_OFFSET 20
+
+SDL_Renderer* render;
+TTF_Font* font;
+
+cetris_game g;
+
+uint8_t colors[8][3] = {
+  {0, 0, 0},     // Black
+  {127,219,255}, // Aqua
+  {61,153,112},  // Olive
+  {177,13,201},  // Purple
+  {240,18,190},  // Fuchsia
+  {255,133,27},  // Orange
+  {0,31,63},     // Navy
+  {255,220,0}    // Yellow 
+};
+
+#ifdef _WIN32
+DWORD WINAPI game_loop(void* data) {
+  while(1) {
+    Sleep((1.0/60.0) * 1000.0);
+    //if (!is_paused) 
+    update_game_tick(&g);
+  }
+  return 0;
+}
+#else
+void *game_loop(void) {
+  while(1) {
+    sleep((1.0/60.0) * 1000000.0);
+    //if (!is_paused) 
+    update_game_tick(&g);
+  }
+  return 0;
+}
+#endif
+
+void setup() {
+  SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO);
+  SDL_Window* win = SDL_CreateWindow("cetris", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, W, H, SDL_WINDOW_SHOWN);
+  render = SDL_CreateRenderer(win, -1, SDL_RENDERER_PRESENTVSYNC|SDL_RENDERER_ACCELERATED);
+  SDL_RenderSetLogicalSize(render, W, H);
+  if (!render) exit(fprintf(stderr, "err: could not create SDL renderer\n")); 
+
+  TTF_Init();
+  font = TTF_OpenFont("LiberationMono-Regular.ttf", 18);
+}
+
+void draw(cetris_game* g) {
+  SDL_Rect b = {0, 0, 25, 25}; 
+  for (int x = 0; x < CETRIS_BOARD_X; x++) {
+    for (int y = g->highest_line; y < CETRIS_BOARD_Y; y++) {
+      if (g->board[x][y] & SLOT_OCCUPIED) {
+        b.x = X_OFFSET + (x * 25);
+        b.y = (Y_OFFSET + (y * 25)) - CETRIS_BOARD_VISABLE;
+ 
+        uint8_t (*color)[3] = &(colors[(g->board[x][y] >> 5)]);
+        SDL_SetRenderDrawColor(render, (*color)[0], (*color)[1], (*color)[2], 255);
+
+        if (g->line_remove_tick[y]) {
+          if (g->tick % 2 == 0) {
+            SDL_RenderDrawRect(render, &b);
+          }
+        } else {
+          SDL_RenderDrawRect(render, &b);
+        }
+      }
+    }
+  }
+}
+
+int main(void) {
+  setup();
+
+  init_game(&g);
+
+#ifdef _WIN32
+  HANDLE thread = CreateThread(NULL, 0, game_loop, NULL, 0, NULL);
+#else
+  pthread_t thread;
+  pthread_create(&thread, NULL, (void*)game_loop, (void*)0);
+#endif
+
+  SDL_Event e;
+  for(;;) {
+    while(SDL_PollEvent(&e)) {
+      switch (e.type) {
+        case SDL_QUIT:
+          exit(0);
+        case SDL_KEYDOWN:
+          switch (e.key.keysym.sym) {
+            case SDLK_LEFT:
+              move_piece(&g, LEFT); break;
+            case SDLK_RIGHT:
+              move_piece(&g, RIGHT); break;
+            case SDLK_DOWN:
+              move_piece(&g, DOWN); break;
+            case SDLK_SPACE:
+              move_piece(&g, HARD_DROP); break;
+            case SDLK_UP:
+              move_piece(&g, ROTATE_CW); break;
+          }
+      }
+    }
+    draw(&g);
+    SDL_Delay(1000 / 60);
+  }
+
+}