Added movement

1 files changed, 63 insertions, 3 deletions

@@ -13,23 +13,83 @@ GameState::GameState(SDL_PixelFormat* fmt)
 
         on = SDL_MapRGB(fmt, 0, 0, 0);
         off = SDL_MapRGB(fmt, 255, 255, 255);
+        player_color = SDL_MapRGB(fmt, 255, 255, 0);
+
+        playerx = 1;
+        playery = 1;
+}
+
+void GameState::input(SDLKey key)
+{
+        switch (key)
+        {
+                case SDLK_LEFT:
+                        move(playerx-1, playery);
+
+                        break;
+                case SDLK_RIGHT:
+                        move(playerx+1, playery);
+
+                        break;
+                case SDLK_UP:
+                        move(playerx, playery-1);
+
+                        break;
+                case SDLK_DOWN:
+                        move(playerx, playery+1);
+
+                        break;
+        }
+}
+
+void GameState::move(int x, int y)
+{
+        wrap(&x, &y);
+
+        if (blocks[x][y]) return;
+
+        playerx = x;
+        playery = y;
+}
+
+void GameState::wrap(int* x, int* y)
+{
+        if (*x < 0)
+        {
+                *x = WIDTH-(0-*x);
+        } else if (*y < 0)
+        {
+                *y = HEIGHT-(0-*y);
+        } else if (*x >= WIDTH)
+        {
+                *x = *x-WIDTH;
+        } else if (*y >= HEIGHT)
+        {
+                *y = *y-HEIGHT;
+        }
 }
 
 void GameState::render(SDL_Surface* screen)
 {
+        SDL_Rect block;
+        block.w = 16;
+        block.h = 16;
+
         int x,y;
 
         for (y=0;y<HEIGHT;y++)
         {
                 for (x=0;x<WIDTH;x++)
                 {
-                        SDL_Rect block;
                         block.x = x*16;
                         block.y = y*16;
-                        block.w = 16;
-                        block.h = 16;
 
                         SDL_FillRect(screen, &block, (blocks[x][y] ? on : off));
                 }
         }
+
+        block.x = playerx*16;
+        block.y = playery*16;
+
+        SDL_FillRect(screen, &block, player_color);
 }