Player character can move now

2 files changed, 40 insertions, 5 deletions

@@ -4,20 +4,51 @@
 
 void loop(Renderer& renderer) {
   Game game;
-  game.addSprite(Sprite("../res/lucas.png", renderer));
+  int playerSpriteId = game.addSprite(Sprite("../res/lucas.png", renderer));
 
   renderer.render(game);
 
+  size_t inputDt = 50;
+  size_t inputAcc = 0;
+
+  size_t lastTime = SDL_GetTicks();
+
   for (;;) {
+    size_t currentTime = SDL_GetTicks();
+    size_t frameTime = currentTime - lastTime;
+    lastTime = currentTime;
+
     SDL_Event e;
-    while (SDL_PollEvent(&e))
-    {
-      if (e.type == SDL_QUIT)
-      {
+    while (SDL_PollEvent(&e)) {
+      if (e.type == SDL_QUIT) {
         return;
       }
     }
 
+    Sprite& playerSprite = game.getSprite(playerSpriteId);
+    const Uint8* state = SDL_GetKeyboardState(NULL);
+
+    inputAcc += frameTime;
+    while (inputAcc > inputDt) {
+      inputAcc -= inputDt;
+
+      if (state[SDL_SCANCODE_LEFT]) {
+        playerSprite.setX(playerSprite.getX()-8);
+      }
+
+      if (state[SDL_SCANCODE_RIGHT]) {
+        playerSprite.setX(playerSprite.getX()+8);
+      }
+
+      if (state[SDL_SCANCODE_UP]) {
+        playerSprite.setY(playerSprite.getY()-8);
+      }
+
+      if (state[SDL_SCANCODE_DOWN]) {
+        playerSprite.setY(playerSprite.getY()+8);
+      }
+    }
+
     renderer.render(game);
   }
 }
@@ -15,6 +15,10 @@ public:
 
   int getX() { return x_; }
 
+  void setX(int x) { x_ = x; }
+
+  void setY(int y) { y_ = y; }
+
   int getY() { return y_; }
 
   int getWidth() { return width_; }