anki-3d-engine/include/anki/input/Input.h

#ifndef ANKI_INPUT_INPUT_H
#define ANKI_INPUT_INPUT_H

#include "anki/math/Math.h"
#include "anki/util/Singleton.h"
#include <SDL/SDL_scancode.h>
#include <array>

namespace anki {

/// Handle the SDL input
class Input
{
public:
	Input()
	{
		init();
	}

	/// @name Acessors
	/// @{
	short getKey(uint32_t i) const
	{
		return keys[i];
	}

	short getMouseBtn(uint32_t i) const
	{
		return mouseBtns[i];
	}

	bool getWarpMouse() const
	{
		return warpMouseFlag;
	}
	bool& getWarpMouse()
	{
		return warpMouseFlag;
	}
	void setWarpMouse(const bool x)
	{
		warpMouseFlag = x;
	}
	/// @}

	void reset();
	void handleEvents();

private:
	/// @name Keys and btns
	/// @{

	/// Shows the current key state
	/// - 0 times: unpressed
	/// - 1 times: pressed once
	/// - >1 times: Kept pressed 'n' times continuously
	std::array<short, SDL_NUM_SCANCODES> keys;

	/// Mouse btns. Supporting 3 btns & wheel. @see keys
	std::array<short, 8> mouseBtns;
	/// @}

	bool warpMouseFlag;

	// mouse stuff
	Vec2 mousePosNdc; ///< The coords are in the NDC space
	/// The coords are in the window space. (0, 0) is in the upper left
	/// corner
	Vec2 mousePos;
	Vec2 mouseVelocity;
	bool hideCursor;

	void init();
};

typedef Singleton<Input> InputSingleton;

} // end namespace

#endif