Magic_Game/samples/Samples/Demo4.h

// Copyright (C) 2019 Nomango

#pragma once
#include "common.h"

// <20>ϻ<EFBFBD>
KGE_DECLARE_SMART_PTR(Tiger);
class Tiger
	: public Sprite
{
	FramesPtr run_frames;			// <20>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD>֡
	FramesPtr stand_frames;			// վ<><D5BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֡
	bool facing_left;				// <20>泯<EFBFBD><E6B3AF><EFBFBD><EFBFBD><EFBFBD>泯<EFBFBD><E6B3AF>
	bool running;					// <20>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܲ<EFBFBD>
	Direction running_direction;	// <20>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD>

public:
	Tiger()
	{
		// <20><>ȡͼƬԭʼ<D4AD><CABC>С
		ImagePtr image = new Image(L"res/tiger.png");
		Size source_size = image->GetSize();
		// <20><><EFBFBD><EFBFBD>ÿ֡ͼƬ<CDBC><C6AC>С
		Size frame_size = { source_size.x / 5, source_size.y / 3 };

		// <20><><EFBFBD><EFBFBD>֡<EFBFBD><D6A1><EFBFBD><EFBFBD>
		run_frames = new Frames;
		for (int i = 0; i < 6; ++i)
		{
			Point pos = { (i % 5) * frame_size.x, (i / 5) * frame_size.y };
			ImagePtr frame = new Image(L"res/tiger.png", Rect{ pos, frame_size });
			run_frames->Add(frame);
		}

		stand_frames = new Frames;
		for (int i = 0; i < 6; ++i)
		{
			Point pos = { ((i + 1) % 5) * frame_size.x, ((i + 1) / 5 + 1) * frame_size.y };
			ImagePtr frame = new Image(L"res/tiger.png", Rect{ pos, frame_size });
			stand_frames->Add(frame);
		}

		// ִ<>ж<EFBFBD><D0B6><EFBFBD>
		AddAction(
			Tween::Animation(stand_frames)
			.SetDuration(1000)
			.SetLoops(-1)
		);

		// <20><><EFBFBD>Ӱ<EFBFBD><D3B0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		AddListener(Event::KeyDown, MakeClosure(this, &Tiger::OnKeyDown));
		AddListener(Event::KeyUp, MakeClosure(this, &Tiger::OnKeyUp));

		// Ĭ<>Ϸ<EFBFBD><CFB7><EFBFBD>Ϊ Left
		facing_left = true;
		running = false;

		// <20><><EFBFBD><EFBFBD>ê<EFBFBD><C3AA>
		SetAnchor(0.5f, 0.5f);
	}

	void OnKeyDown(Event const& e)
	{
		if (e.key.code == KeyCode::Left)
			Run(Direction::Left);
		else if (e.key.code == KeyCode::Right)
			Run(Direction::Right);
		else if (e.key.code == KeyCode::Up)
			Run(Direction::Up);
		else if (e.key.code == KeyCode::Down)
			Run(Direction::Down);
	}

	void OnKeyUp(Event const& e)
	{
		switch (e.key.code)
		{
		case KeyCode::Left:
		case KeyCode::Right:
		case KeyCode::Up:
		case KeyCode::Down:
			StopRun();
			break;
		}
	}

	void Run(Direction d)
	{
		if (!running)
		{
			running = true;
			StopAllActions();

			// ִ<><D6B4><EFBFBD>ܲ<EFBFBD><DCB2><EFBFBD><EFBFBD><EFBFBD>
			AddAction(
				Tween::Animation(run_frames)
				.SetDuration(500)
				.SetLoops(-1)
			);
		}

		running_direction = d;
		if (running_direction == Direction::Left)
		{
			facing_left = true;
		}
		else if (running_direction == Direction::Right)
		{
			facing_left = false;
		}

		// <20><><EFBFBD>ſ<EFBFBD><C5BF>Ե<EFBFBD><D4B5><EFBFBD>ͼƬ<CDBC><C6AC>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>
		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> -1 ͼƬ<CDBC>ᷴת
		SetScaleX(facing_left ? 1.0f : -1.0f);
	}

	void StopRun()
	{
		if (running)
		{
			running = false;
			StopAllActions();

			// ִ<><D6B4>վ<EFBFBD><D5BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			AddAction(
				Tween::Animation(stand_frames)
				.SetDuration(1000)
				.SetLoops(-1)
			);
		}
	}

	void OnUpdate(Duration dt)
	{
		if (running)
		{
			// <20><><EFBFBD><EFBFBD><EFBFBD>ƶ<EFBFBD><C6B6><EFBFBD><EFBFBD><EFBFBD>
			// OnUpdate <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ȶ<EFBFBD><C8B6><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD>еĺ<D0B5><C4BA><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>ȶ<EFBFBD>
			// ÿ<><C3BF><EFBFBD>ƶ<EFBFBD> 150 <20><><EFBFBD><EFBFBD>, Ӧ<><D3A6><EFBFBD><EFBFBD> dt <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƶ<EFBFBD><C6B6><EFBFBD><EFBFBD><EFBFBD>
			const float moving_per_sec = 150;
			const float distance = moving_per_sec * dt.Seconds();

			switch (running_direction)
			{
			case Direction::Up:
				Move(0, -distance);
				break;
			case Direction::Down:
				Move(0, distance);
				break;
			case Direction::Left:
				Move(-distance, 0);
				break;
			case Direction::Right:
				Move(distance, 0);
				break;
			}
		}
	}
};

class Demo4
	: public Scene
{
public:
	static ScenePtr Create()
	{
		return new Demo4;
	}

	Demo4()
	{
		// <20><><EFBFBD><EFBFBD><EFBFBD>ϻ<EFBFBD>
		TigerPtr tiger = new Tiger;
		// <20><><EFBFBD><EFBFBD>Ļ<EFBFBD>Ͼ<EFBFBD><CFBE><EFBFBD><EFBFBD><EFBFBD>ʾ
		tiger->SetAnchor(0.5f, 0.5f);
		tiger->SetPosition(WINDOW_WIDTH / 2, WINDOW_HEIGHT / 2);

		// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		TextPtr text = new Text(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҽ<EFBFBD><EFBFBD>ƶ<EFBFBD>");
		// <20><><EFBFBD>ýڵ<C3BD><DAB5><EFBFBD>СΪ<D0A1><CEAA><EFBFBD>ֲ<EFBFBD><D6B2>ִ<EFBFBD>С
		text->SetSize(text->GetLayoutSize());
		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
		text->SetAnchor(0.5f, 0.5f);
		text->SetPosition(WINDOW_WIDTH / 2, WINDOW_HEIGHT - 80);
		text->SetAlignment(TextAlign::Center);

		// <20><><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD>
		this->AddChild(tiger);
		this->AddChild(text);
	}
};