LibGDX游戏引擎-8舞台类的使用(Stage)

例子源码：使用到的(Person类请见 7 演员类的使用 Actor 类)

 

package com.qsuron;

import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;

public class MyDemo implements ApplicationListener{
public static boolean GameIsRunning = false;
public static boolean ShopIsRunning = false;
public static boolean SuccessIsRunning = false;
SpriteBatch batch;
Image image_stage_background,
image_openStage_background,
image_openStage_btn_newGame,
image_openStage_btn_shop,
image_shopStage_background,
image_shopStage_btn_heart,
image_shopStage_btn_coin,
image_shopStage_btn_close,
image_successStage_success;
Stage stage,
openStage,
shopStage,
successStage;

@Override
public void create() {
batch = new SpriteBatch();
stage = new Stage(800, 480, false, batch);
openStage = new Stage(800, 480, false, batch);
shopStage = new Stage(800, 480, false, batch);
successStage = new Stage(800, 480, false, batch);

//开始游戏舞台
Texture texture_open = new Texture(Gdx.files.internal("data/open.png"));
Texture texture_button = new Texture(Gdx.files.internal("data/btn_newgame.png"));
Texture texture_button2 = new Texture(Gdx.files.internal("data/btn_shop.png"));
image_openStage_background = new Image(new TextureRegion(texture_open,800,480));
image_openStage_background.setPosition(0,0);
image_openStage_btn_newGame = new Image(texture_button);
image_openStage_btn_newGame.setPosition(80,380);
image_openStage_btn_shop = new Image(texture_button2);
image_openStage_btn_shop.setPosition(80,80);
openStage.addActor(image_openStage_background);
openStage.addActor(image_openStage_btn_newGame);
openStage.addActor(image_openStage_btn_shop);

//商店舞台
Texture texture_shop = new Texture(Gdx.files.internal("data/shop.png"));
image_shopStage_background = new Image(new TextureRegion(texture_shop,0,85,512,350));
image_shopStage_btn_heart = new Image(new TextureRegion(texture_shop,0,0,102,85));
image_shopStage_btn_coin = new Image(new TextureRegion(texture_shop,102,0,102,85));
image_shopStage_btn_close = new Image(new TextureRegion(texture_shop,300,10,50,40));
image_shopStage_background.setPosition(0, 0);
image_shopStage_background.setSize(480,320);
image_shopStage_btn_heart.setPosition(190,50);
image_shopStage_btn_coin.setPosition(50,50);
image_shopStage_btn_close.setPosition(400,275);
shopStage.addActor(image_shopStage_background);
shopStage.addActor(image_shopStage_btn_heart);
shopStage.addActor(image_shopStage_btn_coin);
shopStage.addActor(image_shopStage_btn_close);

//购买舞台
image_successStage_success = new Image(new TextureRegion(texture_shop,512,0,255,255));
image_successStage_success.setPosition(100,100);
successStage.addActor(image_successStage_success);

//游戏舞台
image_stage_background = new Image(new Texture(Gdx.files.internal("data/background.jpg")));
Gdx.input.setInputProcessor(stage);
Person p = new Person(100,170);
stage.addActor(image_stage_background);
stage.addActor(p);
stage.addActor(p.btn_L);
stage.addActor(p.btn_R);

//设置监听
this.setListener();
}

public void setListener() {
image_openStage_btn_newGame.addListener(new InputListener(){
@Override
public boolean touchDown(InputEvent event, float x, float y,
int pointer, int button) {
GameIsRunning = true;
return true;
}
});
image_openStage_btn_shop.addListener(new InputListener(){
@Override
public boolean touchDown(InputEvent event, float x, float y,
int pointer, int button) {
ShopIsRunning = true;
return true;
}
});
image_shopStage_btn_heart.addListener(new InputListener() {
           @Override
           public boolean touchDown(InputEvent event, float x, float y,
                   int pointer, int button) {
               SuccessIsRunning = true;
               return true;
           }
});
image_shopStage_btn_coin.addListener(new InputListener() {
           @Override
           public boolean touchDown(InputEvent event, float x, float y,
                   int pointer, int button) {
               SuccessIsRunning = true;
               return true;
           }
       });
image_shopStage_btn_close.addListener(new InputListener(){
@Override
           public boolean touchDown(InputEvent event, float x, float y,
                   int pointer, int button) {
               ShopIsRunning = false;
               return true;
           }
});
image_successStage_success.addListener(new InputListener(){
@Override
           public boolean touchDown(InputEvent event, float x, float y,
                   int pointer, int button) {
               SuccessIsRunning = false;
               return true;
           }
});
}

//重置舞台监听
public void setStage(){
if(GameIsRunning){
Gdx.input.setInputProcessor(stage);
}else{
Gdx.input.setInputProcessor(openStage);
if(ShopIsRunning){
Gdx.input.setInputProcessor(shopStage);
if(SuccessIsRunning){
Gdx.input.setInputProcessor(successStage);
}
}
}
}

//重置舞台绘制
public void stageRender(){
if(GameIsRunning){
stage.act();
stage.draw();
}else{
openStage.act();
openStage.draw();
if(ShopIsRunning){
shopStage.act();
shopStage.draw();
if(SuccessIsRunning){
successStage.act();
successStage.draw();
}
}
}
}

@Override
public void dispose() {
batch.dispose();
stage.dispose();
openStage.dispose();
shopStage.dispose();
successStage.dispose();
}

@Override
public void render() {
Gdx.gl.glClearColor(0,0,0, 0);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
this.stageRender();
this.setStage();
}

@Override
public void resize(int width, int height) {
}

@Override
public void pause() {
}

@Override
public void resume() {
}

}

 

这个例子，只是比较简单的舞台切换，当然了，正常游戏中是不这样设置舞台切换的，

这里只是拿最浅显易懂的东西来给大家说明，Stage类的使用和简单的切换，大家千万别以为游戏中就要这么使用。

希望大家通过简单的代码能理解Stage类的使用，能明白他的原理就可以了。