Added feature to the camera that it follows the viewing direction both in the horizontal and vertical

code/intermediate/tutorial12-camera/src/camera.rs

@@ -157,7 +157,8 @@ impl CameraController {
 
         // Move forward/backward and left/right
         let (yaw_sin, yaw_cos) = camera.yaw.0.sin_cos();
-        let forward = Vector3::new(yaw_cos, 0.0, yaw_sin).normalize();
+        let pitch_sin = camera.pitch.0.sin();
+        let forward = Vector3::new(yaw_cos, pitch_sin, yaw_sin).normalize();
         let right = Vector3::new(-yaw_sin, 0.0, yaw_cos).normalize();
         camera.position += forward * (self.amount_forward - self.amount_backward) * self.speed * dt;
         camera.position += right * (self.amount_right - self.amount_left) * self.speed * dt;

docs/intermediate/tutorial12-camera/README.md

@@ -211,7 +211,8 @@ impl CameraController {
 
         // Move forward/backward and left/right
         let (yaw_sin, yaw_cos) = camera.yaw.0.sin_cos();
-        let forward = Vector3::new(yaw_cos, 0.0, yaw_sin).normalize();
+        let pitch_sin = camera.pitch.0.sin();
+        let forward = Vector3::new(yaw_cos, pitch_sin, yaw_sin).normalize();
         let right = Vector3::new(-yaw_sin, 0.0, yaw_cos).normalize();
         camera.position += forward * (self.amount_forward - self.amount_backward) * self.speed * dt;
         camera.position += right * (self.amount_right - self.amount_left) * self.speed * dt;