macros and ui element

src/game/input.cpp

@@ -2,12 +2,19 @@
 
 namespace Game {
     const bool* Input::mCurrentKeyStates = nullptr;
-    bool* Input::mPreviousKeyStates = nullptr;
+    const bool* Input::mPreviousKeyStates = nullptr;
     int Input::mNumKeys = 0;
+    SDL_MouseButtonFlags Input::mCurrentMouseButtonStates = 0;
+    SDL_MouseButtonFlags Input::mPreviousMouseButtonStates = 0;
+    float Input::mMouseX = 0.0f;
+    float Input::mMouseY = 0.0f;
 
     void Input::update() {
-        mPreviousKeyStates = const_cast<bool*>(mCurrentKeyStates);
+        mPreviousKeyStates = mCurrentKeyStates;
         mCurrentKeyStates = SDL_GetKeyboardState(&mNumKeys);
+
+        mPreviousMouseButtonStates = mCurrentMouseButtonStates;
+        mCurrentMouseButtonStates = SDL_GetMouseState(&mMouseX, &mMouseY);
     }
 
     bool Input::isKeyPressed(SDL_Scancode key) {
@@ -24,4 +31,24 @@ namespace Game {
         if (key < 0 || key >= mNumKeys) return false;
         return (!mCurrentKeyStates[key]) && mPreviousKeyStates && mPreviousKeyStates[key];
     }
+
+    bool Input::isMouseButtonPressed(Uint8 button) {
+        return (mCurrentMouseButtonStates & SDL_BUTTON_MASK(button)) != 0;
+    }
+
+    bool Input::isMouseButtonJustPressed(Uint8 button) {
+        return (mCurrentMouseButtonStates & SDL_BUTTON_MASK(button)) != 0 && (mPreviousMouseButtonStates & SDL_BUTTON_MASK(button)) == 0;
+    }
+
+    bool Input::isMouseButtonJustReleased(Uint8 button) {
+        return (mCurrentMouseButtonStates & SDL_BUTTON_MASK(button)) == 0 && (mPreviousMouseButtonStates & SDL_BUTTON_MASK(button)) != 0;
+    }
+
+    float Input::getMouseX() {
+        return mMouseX;
+    }
+
+    float Input::getMouseY() {
+        return mMouseY;
+    }
 }