From 065c89e902b0d8f813195b636021313ec9dee3a1 Mon Sep 17 00:00:00 2001
From: karl <karl.bittner@hexaquo.at>
Date: Fri, 13 Dec 2019 13:50:02 +0100
Subject: [PATCH] Add ESC key callback for closing

---
 main.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/main.cpp b/main.cpp
index 4410663..227d1de 100644
--- a/main.cpp
+++ b/main.cpp
@@ -32,6 +32,12 @@ private:
     float gravityAmount;
 };
 
+static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
+        glfwSetWindowShouldClose(window, GLFW_TRUE);
+}
+
 int main() {
     World *world = World::createWorld();
     world->registerSystem(new GravitySystem(-9.8f));
@@ -61,6 +67,8 @@ int main() {
     /* Make the window's context current */
     glfwMakeContextCurrent(window);
 
+    glfwSetKeyCallback(window, key_callback);
+
     /* Loop until the user closes the window */
     while (!glfwWindowShouldClose(window)) {
         /* Render here */