RoamingCamera.h

#pragma once
#include "pch.h"

using namespace Ogre;
using namespace OgreBites;

// ROAMING CAMERA
// Simple camera that can be moved around the scene using the mouse and keyboard (WASD)
// Activate the camera motion mode by holding down the right mouse button
class RoamingCamera
{
public:

	// CONSTRUCTOR
	// scene_manager: The main scene manager
	// render_window: The window to which the camera is attached and will display within
	// position: The Initial position of the camera in world coordinates
	// lookat_position: A point in world coordinates that the camera is pointing at
	RoamingCamera(SceneManager* scene_manager, RenderWindow* render_window, Vector3 position, Vector3 lookat_position = Vector3(0, 0, 0));
	~RoamingCamera();

	// UPDATE
	// Updates position and rotation of the camera on time that has passed and any key presses
	// delta_time: Time since last update in seconds
	// state: Keyboard state, retrieved using SDL_GetKeyboardState
	void update(Ogre::Real delta_time, const Uint8 * keyboard_state);

private:
	SceneManager* scene_manager_;	// The main scene manager
	Camera*		camera_;			// The camera itself
	SceneNode*	camera_node_;		// The scene node that holds the camera
	float movement_speed_;			// How fast the camera moves when WASD keys are pressed
	float rotation_speed_;			// How fast the camera rotates when mouse is moved
};