And also made the camera react to gravity, not fall through the floor

src/CLCaster.cpp

@@ -7,9 +7,12 @@ CLCaster::~CLCaster() {
     //release_map();
     //release_camera();
     //release_octree();
-    release_viewport();
+    //clReleaseKernel(kernel_map.at("raycaster"));
+  //  clReleaseProgram()
+    //release_viewport();
 
     delete[] viewport_matrix;
+    delete[] viewport_image;
     delete[] viewport_image;
 
 	camera.reset();
@@ -864,7 +867,6 @@ bool CLCaster::release_buffer(std::string buffer_name) {
 
 	if (buffer_map.count(buffer_name) > 0) {
 
-		clFinish(command_queue);
 		int error = clReleaseMemObject(buffer_map.at(buffer_name));
 		
 		if (cl_assert(error)) {

src/Camera.cpp

@@ -53,7 +53,9 @@ int Camera::add_relative_impulse(DIRECTION impulse_direction, float speed) {
 
 	}
 
+	float val = movement.z;
 	movement += SphereToCart(dir) * speed;
+	movement.z = val;
 
 	return 1;
 }
@@ -79,8 +81,16 @@ int Camera::update(double delta_time) {
 	position.y += static_cast<float>(movement.y * delta_time * multiplier);
 	position.z += static_cast<float>(movement.z * delta_time * multiplier);
 	
-	movement *= static_cast<float>(friction_coefficient * delta_time * multiplier);
-	
+	movement.x *= static_cast<float>(friction_coefficient * delta_time * multiplier);
+	movement.y *= static_cast<float>(friction_coefficient * delta_time * multiplier);
+
+	if (position.z < 3.0f){
+		position.z = 3.0f;
+		movement.z = -0.1;
+	} else {
+		// gravity
+		movement.z -= 0.7f * delta_time;
+	}
 	return 1;
 }
 
@@ -117,6 +127,8 @@ void Camera::recieve_event(VrEventPublisher* publisher, std::unique_ptr<vr::Even
 		else if (held_event->code == sf::Keyboard::D) {
 			add_relative_impulse(Camera::DIRECTION::RIGHT, default_impulse);
 		}
+
+
 	}
 
 	else if (event->type == vr::Event::KeyPressed) {
@@ -128,6 +140,8 @@ void Camera::recieve_event(VrEventPublisher* publisher, std::unique_ptr<vr::Even
 				mouse_enabled = false;
 			else
 				mouse_enabled = true;
+		} else if (key_event->code == sf::Keyboard::Space) {
+			movement.z = 0.25f;
 		}
 	}
 
@@ -198,20 +212,20 @@ void Camera::render_gui() {
 	
 	ImGui::Begin("Camera");
 	
-	ImGui::Columns(2);
-
-	ImGui::Text("Camera Inclination");
-	ImGui::Text("Camera Azimuth");
-	ImGui::Text("Camera Pos_X");
-	ImGui::Text("Camera Poz_Y");
-	ImGui::Text("Camera Poz_Z");
-
-	ImGui::NextColumn();
-
-	ImGui::Text("%f", direction.x);
-	ImGui::Text("%f", direction.y);
-	ImGui::Text("%f", position.x);
-	ImGui::Text("%f", position.y);
+	ImGui::Columns(2);
+
+	ImGui::Text("Camera Inclination");
+	ImGui::Text("Camera Azimuth");
+	ImGui::Text("Camera Pos_X");
+	ImGui::Text("Camera Poz_Y");
+	ImGui::Text("Camera Poz_Z");
+
+	ImGui::NextColumn();
+
+	ImGui::Text("%f", direction.x);
+	ImGui::Text("%f", direction.y);
+	ImGui::Text("%f", position.x);
+	ImGui::Text("%f", position.y);
 	ImGui::Text("%f", position.z);
 
 	ImGui::Separator();