java - 为什么我的玩家会从平铺 map 中掉下来？-6ren

java - 为什么我的玩家会从平铺 map 中掉下来？

转载作者：行者123 更新时间：2023-12-01 18:51:37

我气死了。我很快就要玩这个游戏了。我制作了我的播放器，使其不会掉落或穿过具有“阻止”属性的 Tiled 瓷砖。我不知道为什么，但它不起作用。它不断地跌倒。请帮我。我急需。你是我唯一的希望。

这是我的播放器的代码。碰撞检测就是在此基础上进行的。包 net.hasanbilal.prisonrevelations.entities;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.maps.tiled.TiledMapTileLayer;
import com.badlogic.gdx.maps.tiled.TiledMapTileLayer.Cell;
import com.badlogic.gdx.math.Vector2;

public class Player extends Sprite implements InputProcessor {

    /** 
     * x and y velocity
     */
    private Vector2 velocity = new Vector2();

    //Speed is gravity times 2, meaning that the characters reach terminal velocity at 2 seconds
    private float speed = 19.6f;
    private float gravity = 9.8f;

    private boolean canJump;

    private TiledMapTileLayer cLayer;
    private String blockedKey = "blocked";

    public Player(Sprite s, TiledMapTileLayer cLayer) {
        super(s);
        this.cLayer = cLayer;
    }

    public void draw(SpriteBatch sb) {
        update(Gdx.graphics.getDeltaTime());
        super.draw(sb);

    }
    public void update(float delta) {
        velocity.y -= gravity * delta; //gravity to player


        //Terminal Velocity and Falling

        if(velocity.y > speed)
            velocity.y = speed;
        else if(velocity.y < speed)
            velocity.y = -speed;

        //saves old position for collision detection
        float preX = getX();
        float preY = getY();
        boolean collideX = false;
        boolean collideY = false;
        float tWidth = cLayer.getTileWidth();
        float tHeight = cLayer.getTileHeight();

        setX(getX() + velocity.x * delta);

        if (velocity.x < 0) {

            collideX = collidesLeft();

        } else if (velocity.x > 0) {

            collideX = collidesRight();

        }

        if (collideX) {
            setX(preX);
            velocity.x = 0;
        }




        setY(getY() + velocity.y * delta);



        if (velocity.y < 0) {

            canJump = collideY = collidesBottom();

        } else if (velocity.y > 0) {

            collideY = collidesTop();

        }

        if (collideY) {
            setY(preY);
            velocity.y = 0;
        }
    }



    public Vector2 getVelocity() {
        return velocity;
    }

    public void setVelocity(Vector2 velocity) {
        this.velocity = velocity;
    }

    public float getSpeed() {
        return speed;
    }

    public void setSpeed(float speed) {
        this.speed = speed;
    }

    public float getGravity() {
        return gravity;
    }

    public void setGravity(float gravity) {
        this.gravity = gravity;
    }

    public TiledMapTileLayer getcLayer() {
        return cLayer;
    }

    public void setcLayer(TiledMapTileLayer cLayer) {
        this.cLayer = cLayer;
    }

    private boolean isCellBlocked(float x, float y) {
        Cell cell = cLayer.getCell((int) (x / cLayer.getTileWidth()), (int) (y / cLayer.getTileHeight()));
        return cell != null && cell.getTile() != null && cell.getTile().getProperties().containsKey(blockedKey);
    }

    public boolean collidesRight() {
        for(float step = 0; step < getHeight(); step += cLayer.getTileHeight() / 2)
            if(isCellBlocked(getX() + getWidth(), getY() + step))
                return true;
        return false;
    }

    public boolean collidesLeft() {
        for(float step = 0; step < getHeight(); step += cLayer.getTileHeight() / 2)
            if(isCellBlocked(getX(), getY() + step))
                return true;
        return false;
    }

    public boolean collidesTop() {
        for(float step = 0; step < getWidth(); step += cLayer.getTileWidth() / 2)
            if(isCellBlocked(getX() + step, getY() + getHeight()))
                return true;
        return false;

    }

    public boolean collidesBottom() {
        for(float step = 0; step < getWidth(); step += cLayer.getTileWidth() / 2)
            if(isCellBlocked(getX() + step, getY()))
                return true;
        return false;
    }

    @Override
    public boolean keyDown(int arg0) {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean keyTyped(char arg0) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean keyUp(int arg0) {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean mouseMoved(int arg0, int arg1) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean scrolled(int arg0) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean touchDown(int arg0, int arg1, int arg2, int arg3) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean touchDragged(int arg0, int arg1, int arg2) {
        // TODO Auto-generated method stub
        return false;
    }

    @Override
    public boolean touchUp(int arg0, int arg1, int arg2, int arg3) {
        // TODO Auto-generated method stub
        return false;
    }


}

这是平铺 map 的代码。这是所有图 block 值和属性。

<?xml version="1.0" encoding="UTF-8"?>
<map version="1.2" tiledversion="1.3.1" orientation="orthogonal" renderorder="right-down" compressionlevel="0" width="62" height="37" tilewidth="16" tileheight="16" infinite="0" nextlayerid="3" nextobjectid="1">
 <tileset firstgid="1" name="newTileSet" tilewidth="16" tileheight="16" tilecount="5" columns="10">
  <image source="newTileSet.png" width="160" height="16"/>
  <tile id="0">
   <properties>
    <property name="blocked" value=""/>
   </properties>
  </tile>
  <tile id="1">
   <properties>
    <property name="blocked" value=""/>
   </properties>
  </tile>
  <tile id="5">
   <properties>
    <property name="blocked" value=""/>
   </properties>
  </tile>
  <tile id="7">
   <properties>
    <property name="blocked" value=""/>
   </properties>
  </tile>
  <tile id="8">
   <properties>
    <property name="blocked" value=""/>
   </properties>
  </tile>
 </tileset>
 <layer id="2" name="Tile Layer 2" width="62" height="37">
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,10,7,7,7,7,7,7,7,7,7,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,10,7,7,7,7,7,7,7,7,7,7,7,7,7,10,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,10,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,6,4,6,6,7,7,7,7,7,10,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,5,7,7,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,7,7,7,7,7,7,7,7,7,6,7,5,7,5,7,7,7,7,7,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,7,7,7,7,7,7,7,7,6,6,7,7,7,7,7,7,10,7,7,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,7,7,7,7,7,7,7,7,6,6,7,7,7,7,7,7,7,7,7,7,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,6,7,6,7,6,7,7,7,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,10,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,7,7,7,6,6,6,7,7,6,6,6,2,6,4,4,4,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,4,4,4,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,5,5,5,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,5,5,5,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,10,7,7,7,7,7,7,7,7,7,7,10,7,7,7,7,7,7,7,7,7,10,7,7,7,7,7,7,7,7,7,10,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,6,8,8,8,8,8,8,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,7,7,7,7,6,6,6,7,9,9,7,7,7,7,7,7,7,7,7,7,7,6,6,7,7,7,7,7,7,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,7,7,7,7,7,7,7,7,6,6,7,7,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,6,6,2,2,2,2,2,2,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,6,6,7,7,7,7,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,4,4,6,6,6,6,6,6,6,6,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
</data>
 </layer>
</map>

这是图 block 集的代码。甚至不确定我是否需要这个，因为 .tmx 说它使用 png，而不是 tsx。

<?xml version="1.0" encoding="UTF-8"?>
<tileset version="1.2" tiledversion="1.3.1" name="newTileSet" tilewidth="16" tileheight="16" tilecount="10" columns="10">
 <image source="newTileSet.png" width="160" height="16"/>
 <tile id="0">
  <properties>
   <property name="blocked" value=""/>
  </properties>
 </tile>
 <tile id="1">
  <properties>
   <property name="blocked" value=""/>
  </properties>
 </tile>
 <tile id="5">
  <properties>
   <property name="blocked" value=""/>
  </properties>
 </tile>
 <tile id="7">
  <properties>
   <property name="blocked" value=""/>
  </properties>
 </tile>
 <tile id="8">
  <properties>
   <property name="blocked" value=""/>
  </properties>
 </tile>
</tileset>

请帮助我。我会做任何事情。

最佳答案

这可能对解决碰撞问题没有帮助，但你在这里遇到了问题:

  if(velocity.y > speed)
        velocity.y = speed;
    else if(velocity.y < speed) // should be -speed
        velocity.y = -speed

每次迭代velocity.y < speed是真的，因为 velocity.y < 0和speed > 0

关于java - 为什么我的玩家会从平铺 map 中掉下来？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59726333/

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java - 为什么我的玩家会从平铺 map 中掉下来？