Balls can dance

core/Input.cpp

@@ -0,0 +1,28 @@
+#include "Input.h"
+
+Input::Input() {}
+
+Input *Input::instance = nullptr;
+
+Input *Input::GetInstance() {
+  if (!instance) {
+    instance = new Input();
+  }
+  return instance;
+}
+
+void Input::Use(Window *window){
+  glfwSetKeyCallback(window, (GLFWkeyfun)HandleKeys);
+}
+
+void Input::HandleKeys(Window *window, int keys, int code, int action, int mods) {
+#ifdef LUA_SCRIPTING
+  lua_State *L = (lua_State*) glfwGetWindowUserPointer(window);
+  lua_getglobal(L, "onkey");
+  lua_pushinteger(L, keys);
+  lua_pushinteger(L, code);
+  lua_pushinteger(L, action);
+  lua_pushinteger(L, mods);
+  lua_call(L, 4, 0);
+#endif // LUA_SCRIPTING
+}

core/Input.h

@@ -0,0 +1,22 @@
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#ifdef LUA_SCRIPTING
+extern "C" {
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+}
+#endif // LUA_SCRIPTING
+
+#include "types.h"
+
+class Input {
+public:
+  static Input *GetInstance();
+  void Use(Window *window);
+private:
+  Input();
+  static void HandleKeys(Window *window, int key, int code, int action, int mods);
+  static Input *instance;
+};

core/couch.cpp

@@ -20,6 +20,7 @@ extern "C" {
 #include "Shader.h"
 #include "Ball.h"
 #include "Camera.h"
+#include "Input.h"
 
 Window *window;
 
@@ -75,8 +76,12 @@ int main() {
     std::cerr << "Could not find main.lua" << std::endl;
     return 1;
   }
+  glfwSetWindowUserPointer(window, (void*) L);
 #endif // LUA_SCRIPTING
 
+  Input *input = Input::GetInstance();
+  input->Use(window);
+
   Camera defaultCamera;
   
   Shader shader("shaders/flat.vert", "shaders/flat.frag");