added movement

headers/camera.hpp

@@ -7,7 +7,10 @@ public:
   Camera(glm::vec3 pos, float yaw, float pitch, float fov, float aspect);
   ~Camera();
   void setPos(glm::vec3 pos);
+  void addPos(glm::vec3 pos);
+  void addFPos(glm::vec3 pos);
   void setRotate(float yaw, float pitch);
+  void addRotate(float yaw, float pitch);
   glm::mat4 getView();
   glm::mat4 getProjection();
   float aspect;

src/camera.cpp

@@ -16,8 +16,28 @@ void Camera::setRotate(float yaw, float pitch) {
   update();
 }
 
+void Camera::addRotate(float yaw, float pitch) {
+  this->yaw += yaw;
+  this->pitch += pitch;
+  if (this->pitch > 89.0f)
+    this->pitch = 89.0f;
+  if (this->pitch < -89.0f)
+    this->pitch = -89.0f;
+  update();
+}
+
 void Camera::setPos(glm::vec3 pos) { this->pos = pos; }
 
+void Camera::addPos(glm::vec3 pos) { this->pos += pos; }
+
+void Camera::addFPos(glm::vec3 pos) {
+  glm::vec3 f = glm::normalize(glm::vec3(front.x, 0, front.z));
+  glm::vec3 r = glm::normalize(glm::cross(f, up));
+  this->pos += f * pos.x;
+  this->pos += up * pos.y;
+  this->pos += r * pos.z;
+}
+
 void Camera::update() {
   glm::vec3 direction;
   direction.x = cos(glm::radians(yaw)) * cos(glm::radians(pitch));

src/main.cpp

@@ -10,8 +10,12 @@
 
 #define UNUSED(x) (void)(x)
 
-void processInput(GLFWwindow *window);
+glm::vec3 processInput(GLFWwindow *window);
 void framebuffer_size_callback(GLFWwindow *window, int width, int height);
+void mouse_callback(GLFWwindow *window, double xpos, double ypos);
+
+float deltaTime = 0;
+
 GLFWwindow *init() {
   glfwInit();
   glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
@@ -25,9 +29,11 @@ GLFWwindow *init() {
   int is_ok = 0;
   is_ok = gladLoadGLLoader((GLADloadproc)glfwGetProcAddress);
   assert(is_ok && "Failed to init glad");
+  glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
 
   glViewport(0, 0, 800, 600);
   glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+  glfwSetCursorPosCallback(window, mouse_callback);
   return window;
 }
 
@@ -50,11 +56,10 @@ unsigned int meshInit() {
 
 int main(void) {
   glm::vec3 lightPos = glm::vec3(1, 2.0f, 1);
-  glm::vec3 cameraPos = glm::vec3(2.3, 3, 5);
   glm::vec3 lightColor = glm::vec3(1);
 
   GLFWwindow *window = init();
-  Camera *cam = new Camera(cameraPos, -115.0f, -25.0f, 45, 800.0 / 600);
+  Camera *cam = new Camera(glm::vec3(0), 0, 0, 45, 800.0 / 600);
   glfwSetWindowUserPointer(window, cam);
 
   Shader *cubeShader = new Shader("./shaders/lighting/Vert.glsl",
@@ -72,7 +77,12 @@ int main(void) {
   light->setScale(glm::vec3(.3));
 
   glEnable(GL_DEPTH_TEST);
+  float lastFrame = 0;
   while (!glfwWindowShouldClose(window)) {
+    float currentFrame = static_cast<float>(glfwGetTime());
+    deltaTime = currentFrame - lastFrame;
+    lastFrame = currentFrame;
+
     glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
@@ -101,7 +111,9 @@ int main(void) {
 
     glfwSwapBuffers(window);
     glfwPollEvents();
-    processInput(window);
+    glm::vec3 mov = processInput(window);
+    mov *= deltaTime;
+    cam->addFPos(mov);
   }
 
   delete cam;
@@ -111,9 +123,26 @@ int main(void) {
   return 0;
 }
 
-void processInput(GLFWwindow *window) {
+glm::vec3 processInput(GLFWwindow *window) {
+  glm::vec3 mov = glm::vec3(0);
   if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
     glfwSetWindowShouldClose(window, true);
+
+  if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
+    mov += glm::vec3(1, 0, 0);
+  if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
+    mov -= glm::vec3(1, 0, 0);
+  if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
+    mov += glm::vec3(0, 0, 1);
+  if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
+    mov -= glm::vec3(0, 0, 1);
+  if (glfwGetKey(window, GLFW_KEY_Q) == GLFW_PRESS)
+    mov += glm::vec3(0, 1, 0);
+  if (glfwGetKey(window, GLFW_KEY_E) == GLFW_PRESS)
+    mov -= glm::vec3(0, 1, 0);
+
+  mov *= 5;
+  return mov;
 }
 
 void framebuffer_size_callback(GLFWwindow *window, int width, int height) {
@@ -123,3 +152,20 @@ void framebuffer_size_callback(GLFWwindow *window, int width, int height) {
   if (cam)
     cam->aspect = (float)width / height;
 }
+
+void mouse_callback(GLFWwindow *window, double xpos, double ypos) {
+  static float xprev = 0.0, yprev = 0.0;
+
+  float xchange = xpos - xprev;
+  float ychange = yprev - ypos;
+  xprev = xpos;
+  yprev = ypos;
+
+  float sensitivity = 0.1f;
+  xchange *= sensitivity;
+  ychange *= sensitivity;
+
+  Camera *cam = (Camera *)glfwGetWindowUserPointer(window);
+  if (cam)
+    cam->addRotate(xchange, ychange);
+}