Some test inputs and commentarys

src/screens/GameScreen.cpp

@@ -1,5 +1,6 @@
 #include "GameScreen.h"
 #include <entityx/entityx.h>
+#include <SDL.h>
 
 #include <iostream>
 
@@ -8,6 +9,8 @@ GameScreen::GameScreen(Renderer* renderer, Assets* assets) {
      this->renderer = renderer;
      this->assets = assets;
 
+	//Vertex2D can be defined like this, because it an aggregate class.
+	// see https://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special
     std::vector<Vertex2D> vertices({
 		Vertex2D{glm::vec2(-0.5f,-0.5f), glm::vec2(0.0f,1.0f)},
 		Vertex2D{glm::vec2(0.5f,-0.5f), glm::vec2(1.0f,1.0f)},
@@ -22,6 +25,7 @@ GameScreen::GameScreen(Renderer* renderer, Assets* assets) {
 
     obj = new Mesh(vertices,indices,assets->getTexture("police_officer"));
 
+	inputHandler = new InputHandler();
     camera = new OrtographicCamera();
 
     //Create Entities
@@ -33,6 +37,7 @@ GameScreen::GameScreen(Renderer* renderer, Assets* assets) {
 GameScreen::~GameScreen() {
     delete camera;
     delete obj;
+	delete inputHandler;
 }
 
 void GameScreen::hide() {
@@ -52,7 +57,13 @@ void GameScreen::render() {
 }
 
 void GameScreen::update() {
-
+	SDL_Event event;
+	while(SDL_PollEvent(&event) != 0) {
+		Command* command = inputHandler->handleInput(&event);
+		if (command) {
+			command->execute(*camera);
+		}
+	}
 }
 
 void GameScreen::resize() {