refactor event handling

src/SdlWrapper.cpp

@@ -53,6 +53,25 @@ SdlWrapper::~SdlWrapper() {
     SDL_Quit();
 }
 
+bool SdlWrapper::handleEvents() {
+    SDL_Event event;
+
+    while (SDL_PollEvent(&event)) {
+        switch (event.type) {
+            case SDL_QUIT:
+                return false;
+            case SDL_KEYDOWN:
+                handleKeyDown(event);
+                break;
+            case SDL_KEYUP:
+                handleKeyUp(event);
+                break;
+        }
+    }
+
+    return true;
+}
+
 int SdlWrapper::loop() {
     while (running) {
         if (!handleEvents())