Question

目前我使用的方法是检测触摸位置（Gdx.input.getX（）＆amp; Y（））是否在对象纹理所在的区域内。如果是这样，我将对象纹理的setPosition设置为鼠标位置为中心。虽然这项工作但它并不健全。因为如果我的手指移动得比更新更快，只要触摸位置在纹理边界外。它不再更新。

必须有一种更可靠的方式，请指教。基本上，我想触摸纹理并将纹理拖动到我的触摸移动的任何地方。

非常感谢。

我目前的做法是这样的：

public class PlayScreen implements Screen {
    int scWidth, scHeight;
    int playerWidth, playerHeight;
    private SpriteBatch batch; // This is in the render.
    Player player;
    // Create a constructor
    Game game;
    public PlayScreen(Game game){
        this.game = game;
    }

    @Override
    public void show() {
        batch = new SpriteBatch();
        scWidth = Gdx.graphics.getWidth();
        scHeight = Gdx.graphics.getHeight();
        playerWidth = 180;
        playerHeight = 240;
        player = new Player("mario.png", new Vector2(250, 300),new Vector2(playerWidth, playerHeight)) ;
    }

    @Override
    public void render(float delta) {
        Gdx.gl.glClearColor(1,1,1,1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        batch.begin();

        // Only draw if the mouse is hover on the image.
        if (Gdx.input.getX() > player.getPosition().x && Gdx.input.getX() < player.getPosition().x + playerWidth){
            if (scHeight - Gdx.input.getY() > player.getPosition().y && scHeight - Gdx.input.getY() < player.getPosition().y + playerHeight)
            {

                player.setPosition(new Vector2(Gdx.input.getX() - playerWidth/2,
                        scHeight - Gdx.input.getY() - playerHeight/2));
                player.draw(batch);

            } else{
                player.draw(batch);
            }

        } else{
            player.draw(batch);
        }

        batch.end();
        player.update(); // Update the bound


    }
}

Player类也是：

package com.jiajunyang.emosonicsgame;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.math.Rectangle;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.ui.Image;


public class Player extends Image {

    Vector2 position, size;
    Texture player;
    Rectangle bounds;

public Player(String fileName, Vector2 position, Vector2 size){
    super(new Texture(Gdx.files.internal(fileName)));
    this.position = position;
    this.size = size;
    bounds = new Rectangle(position.x, position.y, size.x, size.y);

// player = new Texture（Gdx.files.internal（fileName））; }

    public void update(){
        bounds.set(position.x, position.y, size.x, size.y);
    }

    public void draw(SpriteBatch batch){
        batch.draw(player, position.x, position.y, size.x, size.y);
    }

    public Vector2 getPosition() {
        return position;
    }

    public void setPosition(Vector2 position) {
        this.position = position;
    }

    public Vector2 getSize() {
        return size;
    }

    public void setSize(Vector2 size) {
        this.size = size;
    }

    public Rectangle getBounds() {
        return bounds;
    }

    public void setBounds(Rectangle bounds) {
        this.bounds = bounds;
    }
}

Answer 1

嘉俊，创建一个舞台并让你的玩家扩展图像。然后在show中调用stage.addActor（player）。在render call stage.act（）和stage.draw（）中。使用Image的构造函数将纹理传递给。最后，在Player的构造函数中，调用它：

addListener(new DragListener() {
            @Override
            public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
                return true;
            }

            @Override
            public void touchDragged(InputEvent event, float x, float y, int pointer) {
                moveBy(x - getWidth()/2, y - getHeight()/2);
            }
        });

Libgdx，Android，如何拖动和移动纹理

1 个答案: