Magic_Game/project/Samples/Demo3.h

// Copyright (C) 2019 Nomango

#pragma once
#include "common.h"

class Demo3
	: public Scene
{
	MusicPtr music;			// <20><><EFBFBD>ֶ<EFBFBD><D6B6><EFBFBD>
	TextPtr volume_text;	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	TextPtr state_text;		// <20><><EFBFBD><EFBFBD>״̬<D7B4><CCAC><EFBFBD><EFBFBD>

public:
	static ScenePtr Create()
	{
		return new Demo3;
	}

	Demo3()
	{
		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		music = new Music;
		if (!music->Load(L"res/music.wav"))
		{
			music = nullptr;

			TextPtr err = new Text(L"<EFBFBD><EFBFBD>Ƶ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>");
			this->AddChild(err);
		}

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֣<EFBFBD><D6A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD><C3B2><EFBFBD>ѭ<EFBFBD><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>-1 <20><>ʾѭ<CABE><D1AD><EFBFBD><EFBFBD><EFBFBD>ţ<EFBFBD>
		music->Play(-1);

		// <20><><EFBFBD><EFBFBD>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		TextPtr intro_text = new Text(L"<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\n<EFBFBD><EFBFBD><EFBFBD>ո<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
		intro_text->SetAnchor(0.5f, 0.5f);
		intro_text->SetPosition(WINDOW_WIDTH / 2, WINDOW_HEIGHT / 2 - 50);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		volume_text = new Text(L"<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
		volume_text->SetAnchor(0.5f, 0.5f);
		volume_text->SetPosition(WINDOW_WIDTH / 2, WINDOW_HEIGHT / 2 + 30);

		// <20><><EFBFBD><EFBFBD>״̬<D7B4><CCAC><EFBFBD><EFBFBD>
		state_text = new Text(L"<EFBFBD><EFBFBD>ǰ״̬<EFBFBD><EFBFBD>");
		state_text->SetAnchor(0.5f, 0.5f);
		state_text->SetPosition(WINDOW_WIDTH / 2, WINDOW_HEIGHT / 2 + 60);

		// <20><><EFBFBD>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD>
		this->AddChild(intro_text);
		this->AddChild(volume_text);
		this->AddChild(state_text);
	}

	void OnUpdate(Duration dt) override
	{
		if (music == nullptr)
			return;

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>Ͳ<EFBFBD><CDB2><EFBFBD>״̬
		float volume = music->GetVolume();
		bool playing = music->IsPlaying();

		// <20>޸<EFBFBD><DEB8>ı<EFBFBD>
		volume_text->SetText(L"<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>" + std::to_wstring(volume));
		state_text->SetText(playing ? L"<EFBFBD><EFBFBD>ǰ״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>" : L"<EFBFBD><EFBFBD>ǰ״̬<EFBFBD><EFBFBD>ֹͣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>");

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>豸
		auto& input = Input::Instance();

		// <20><><EFBFBD>ո<EFBFBD><D5B8><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><CDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		if (input.WasPressed(KeyCode::Space))
		{
			music->IsPlaying() ? music->Pause() : music->Resume();
		}

		// <20><><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		if (input.WasPressed(KeyCode::Up))
		{
			music->SetVolume(volume + 0.1f);
		}
		else if (input.WasPressed(KeyCode::Down))
		{
			music->SetVolume(volume - 0.1f);
		}
	}
};