LOOK AT IT. ADMIIIIIRE IT.

src/main.cpp

@@ -4,14 +4,25 @@
 #include <stdio.h>
 
 #include "renderer.h"
+#include "camera.h"
 
 void errorCatcher(int id, const char* str);
 
+Camera camera(glm::vec3(0.0, 0.0, 3.0));
+
+// void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
+void processInput(GLFWwindow* window);
+void mouseCallback(GLFWwindow* window, double xpos, double ypos);
+// void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
+void mouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+
 int main() {
     glfwSetErrorCallback(errorCatcher);
 
     glfwInit();
     GLFWwindow *window = glfwCreateWindow(1200, 900, "GLTest", NULL, NULL);
+    glfwSetMouseButtonCallback(window, mouseButtonCallback);
+    glfwSetCursorPosCallback(window, mouseCallback);
 
     glfwMakeContextCurrent(window);
     glewInit();
@@ -19,13 +30,60 @@ int main() {
     renderInit(window);
 
     do {
+        processInput(window);
         render(window);
 
         glfwSwapBuffers(window);
         glfwPollEvents();
     } while(!glfwWindowShouldClose(window));
+
+    glfwTerminate();
+    return 0;
 }
 
 void errorCatcher(int id, const char* str) {
     printf("Something *terrible* happened. Here's the briefing: [%d] %s\n", id, str);
-}
+}
+
+float lastTime;
+void processInput(GLFWwindow* window) {
+    float deltaTime = glfwGetTime() - lastTime;
+    lastTime = glfwGetTime();
+
+    if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
+        camera.processMovement(DIRECTION_FORWARD, deltaTime);
+    if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
+        camera.processMovement(DIRECTION_BACKWARDS, deltaTime);
+    if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
+        camera.processMovement(DIRECTION_LEFT, deltaTime);
+    if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
+        camera.processMovement(DIRECTION_RIGHT, deltaTime);
+}
+
+bool mouseCapturing = false;
+float lastX = 0, lastY = 0;
+bool mouseFirst = true;
+void mouseCallback(GLFWwindow* window, double xpos, double ypos) {
+    if (!mouseCapturing) return;
+
+    if (mouseFirst) {
+        lastX = xpos, lastY = ypos;
+        mouseFirst = false;
+    }
+
+    float deltaX = xpos - lastX, deltaY =  ypos - lastY;
+    lastX = xpos, lastY = ypos;
+
+    camera.processRotation(deltaX, deltaY);
+}
+
+void mouseButtonCallback(GLFWwindow* window, int button, int action, int mods) {
+    if (button == GLFW_MOUSE_BUTTON_2)
+        mouseCapturing = action == GLFW_PRESS;
+    if (mouseCapturing) {
+        glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+    } else {
+        glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+        mouseFirst = true;
+    }
+}

src/renderer.cpp

@@ -12,10 +12,10 @@
 #include "renderer.h"
 
 Shader *shader = NULL;
-Camera camera(glm::vec3(0.0, 0.0, 3.0));
+extern Camera camera;
 
 void renderInit(GLFWwindow* window) {
-    glViewport(0, 0, 500, 500);
+    glViewport(0, 0, 1200, 900);
 
     initMeshes();