#pragma once
#include "e2dutil.h"

namespace e2d
{


// 按键消息
class KeyEvent
{
public:
	// 按键消息类型
	enum class Type : int
	{
		Down = 0x0100,	// 按下
		Up				// 抬起
	};

public:
	explicit KeyEvent(
		HWND hWnd,
		UINT message,
		WPARAM w_param,
		LPARAM l_param
	);

	// 获取按键键值
	KeyCode GetCode() const;

	// 获取按键次数
	int GetCount() const;

	// 获取事件类型
	KeyEvent::Type GetType() const;

	// VK 键值转换
	static KeyCode ToKeyCode(
		WPARAM w_param
	);

protected:
	int				count_;
	KeyCode			code_;
	KeyEvent::Type	type_;
};


// 鼠标消息
class MouseEvent
{
public:
	// 鼠标消息类型
	enum class Type : int
	{
		Move = 0x0200,		// 鼠标移动
		LeftDown,			// 鼠标左键按下
		LeftUp,				// 鼠标左键抬起
		LeftDoubleClick,	// 鼠标左键双击
		RightDown,			// 鼠标右键按下
		RightUp,			// 鼠标右键抬起
		RightDoubleClick,	// 鼠标右键双击
		MiddleDown,			// 鼠标中键按下
		MiddleUp,			// 鼠标中键抬起
		MiddleDoubleClick,	// 鼠标中键双击
		Wheel				// 滑动滚轮
	};

public:
	explicit MouseEvent(
		HWND hWnd,
		UINT message,
		WPARAM w_param,
		LPARAM l_param,
		float dpi
	);

	// 获取鼠标横坐标
	float GetX() const;

	// 获取鼠标纵坐标
	float GetY() const;

	// 获取鼠标坐标
	Point GetPos() const;

	// 获取事件类型
	MouseEvent::Type GetType() const;

	float GetWheelDelta() const;

	// 鼠标左键是否按下
	bool IsLButtonDown() const;

	// 鼠标右键是否按下
	bool IsRButtonDown() const;

	// 鼠标中键是否按下
	bool IsMButtonDown() const;

	// Shift 键是否按下
	bool IsShiftDown() const;

	// Ctrl 键是否按下
	bool IsCtrlDown() const;

protected:
	UINT	message_;
	WPARAM	w_param_;
	LPARAM	l_param_;
	Point	pos_;
	MouseEvent::Type type_;
};


// 碰撞事件
class Collision
{
public:
	Collision();

	explicit Collision(
		Node* node,
		Collider::Relation relation
	);

	~Collision();

	// 获取发生碰撞节点
	Node* GetNode() const;

	// 获取交集关系
	Collider::Relation GetRelation() const;

protected:
	Node * node_;
	Collider::Relation relation_;
};

}