Started Meinkraft project

Meinkraft/StateHandler.cpp

@@ -0,0 +1,61 @@
+#include "StateHandler.h"
+#include "MenuState.h"
+#include "WorldState.h"
+
+StateHandler* StateHandler::instance = nullptr;
+
+StateHandler::StateHandler()
+{
+	available = false;
+	CState = MENU;
+	CurrentState = new MenuState();
+	CurrentState->init();
+	available = true;
+}
+
+StateHandler::~StateHandler()
+{
+	delete CurrentState;
+}
+
+StateHandler* StateHandler::getInstance()
+{
+	if (instance == nullptr)
+		instance = new StateHandler();
+
+	return instance;
+}
+
+void StateHandler::update(float deltaTime)
+{
+	if(available)
+		CurrentState->update(deltaTime);
+}
+void StateHandler::draw()
+{
+	if(available)
+		CurrentState->draw();
+}
+
+void StateHandler::changeState(EState newState)
+{
+	if (CState == newState)
+		return;
+
+	available = false;
+
+	CurrentState->exit();
+
+	switch (newState)
+	{
+	case WORLD:
+		CurrentState = new WorldState();
+	case MENU:
+		CurrentState = new MenuState();
+	}
+
+	CState = newState;
+	CurrentState->init();
+
+	available = true;
+}