本文实例讲述了Android使用libgdx实现模拟方向键控制角色移动的方法。分享给大家供大家参考，具体如下：
package com.demo;
import android.os.Bundle;
import com.badlogic.gdx.backends.android.AndroidApplication;
//Libgdx的Texture与Sprite使用
public class LibgdxActivity extends AndroidApplication {
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
// 初始化游戏屏幕，并设置是否支持GLES 2.0，如果您对向下兼容没什么需要选择true即可(2.1以上)，否则选择false。
// initialize(new FirstGame(), true);
initialize(new Box2DDemo(), true);
}
}
package com.demo;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.scenes.scene2d.Actor;
public class FirstActor extends Actor{
private Texture texture;
@Override
public void draw(SpriteBatch batch, float arg1) {
batch.draw(texture, this.x, this.y);
}
@Override
public Actor hit(float arg0, float arg1) {
if (x > 0 && y > 0 && this.height > y && this.width > x) {
return this;
} else {
return null;
}
}
@Override
public boolean touchDown(float arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
return false;
}
@Override
public void touchDragged(float arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void touchUp(float arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
public FirstActor(String name) {
super(name);
texture = new Texture(Gdx.files.internal("bt.png"));
this.height = texture.getHeight();
this.width = texture.getWidth();
}
}
package com.demo;
import android.util.Log;
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.NinePatch;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Button;
import com.badlogic.gdx.scenes.scene2d.ui.ClickListener;
import com.badlogic.gdx.scenes.scene2d.ui.Button.ButtonStyle;
class FirstGame implements ApplicationListener,ClickListener {
private static String UP = "up";
private static String DOWN = "down";
private static String LEFT = "left";
private static String RIGHT = "right";
//舞台
private Stage stage;
//演员
private Actor firstActor;
private Texture texture;
private Button buttonUp,buttonDown,buttonLeft,buttonRight;
private NinePatch patch1, patch2;
@Override
public void create() {
stage = new Stage(Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), true);
firstActor = new FirstActor("renwu");
buttonUp = initButton(UP,40,80);
buttonDown = initButton(DOWN,40,0);
buttonLeft = initButton(LEFT,0,40);
buttonRight = initButton(RIGHT,80,40);
buttonUp.setClickListener(this);
buttonDown.setClickListener(this);
buttonLeft.setClickListener(this);
buttonRight.setClickListener(this);
stage.addActor(firstActor);
stage.addActor(buttonUp);
stage.addActor(buttonDown);
stage.addActor(buttonLeft);
stage.addActor(buttonRight);
Gdx.input.setInputProcessor(stage);
}
@Override
public void render() {
// 清屏
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
stage.act(Gdx.graphics.getDeltaTime());
stage.draw();
}
@Override
public void dispose() {
// 释放占用的资源
stage.dispose();
}
@Override
public void resume() {
}
@Override
public void pause() {
}
@Override
public void resize(int width, int height) {
}
public Button initButton(String name,int x,int y){
if(name.equals(UP)){
texture = new Texture(Gdx.files.internal("up_alt.png"));
}else if(name.equals(DOWN)){
texture = new Texture(Gdx.files.internal("down_alt.png"));
}else if(name.equals(LEFT)){
texture = new Texture(Gdx.files.internal("back_alt.png"));
}else if(name.equals(RIGHT)){
texture = new Texture(Gdx.files.internal("forward_alt.png"));
}
patch1 = new NinePatch(texture, 0, 0, 0, 0);
Button button = new Button(new ButtonStyle(patch1, patch1, patch1, 0f, 0f, 0f, 0f, null, null), name);
button.x = x;
button.y = y;
button.width = 32;
button.height = 32;
return button;
}
@Override
public void click(Actor button) {
if(button.equals(buttonUp)){
Actor actor = button.parent.findActor("renwu");;
actor.y += 10;
Log.i("touch", "up");
}else if(button.equals(buttonDown)){
Actor actor = button.parent.findActor("renwu");;
actor.y -= 10;
Log.i("touch", "down");
}else if(button.equals(buttonLeft)){
Actor actor = button.parent.findActor("renwu");;
actor.x -= 10;
Log.i("touch", "left");
}else if(button.equals(buttonRight)){
Actor actor = button.parent.findActor("renwu");;
actor.x += 10;
Log.i("touch", "right");
}
}
}
希望本文所述对大家Android程序设计有所帮助。
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