Java slick2D，与Tiled的碰撞（地图编辑器）

Question

所以我的问题是，我在Tiled中创建了一个图层并将其命名为block.So是否有任何方法可以让每当玩家尝试在块图层上行走时他无法做到...我该怎么做？这是我的代码：几个屏幕截图：http://prntscr.com/3vya2d（这是它在平铺中的样子）在游戏中：http://prntscr.com/3vya9a

    package javagame;
    import org.lwjgl.input.Mouse;
    import org.newdawn.slick.*;
    import org.newdawn.slick.state.*;
    import org.newdawn.slick.tiled.TiledMap;
    public class Play extends BasicGameState{
Animation Hero, movingUp, movingDown, movingLeft, movingRight,standingfront;
private String spriteName = "Heroj";//string above the player
private TiledMap tileMap1;//tiled map
int[] duration = {100,100,100,100};//duration for how long is animation going to                              last
public String mouse = "1";-just for mouse position variable
    float spritePosisionX=0;-map position, and also for moving player
float spritePosisionY=0;-map position, and also for moving player
float shiftX = spritePosisionX + 220;-player's starting position X
float shiftY = spritePosisionY + 200;-player's starting position Y
    //private Music music; -music(that's for background)
private int coveringSprite;-
private int background;-
private int blocked;-
private int grass;-
private int water;-
//constructor
public Play(int state){

    }

public void init(GameContainer gc,StateBasedGame sbg)throws SlickException{


    //music
    /*music = new Music("sounds/PalletTownMix.wav");
    music.setVolume(0.5f);
    music.loop();*/
    ///////////////


    //loading the map
    tileMap1 = new TiledMap("maps/map3.tmx");-
    //////////////////////////////

    //making the animations
    Image[] walkUp ={new Image("res/heroback1.PNG"),new          Image("res/heroback2.PNG"),new Image("res/heroback1.PNG"),new Image("res/heroback3.PNG")};
  Image[] standingf = {new Image("res/herofront1.PNG"),new Image("res/herofront1.PNG"),new Image("res/herofront1.PNG"),new Image("res/herofront1.PNG")};
  Image[] walkDown = {new Image("res/herofront1.PNG"), new Image("res/herofront2.PNG"), new Image("res/herofront1.PNG"), new Image("res/herofront3.PNG")};
  Image[] walkRight ={new Image("res/heroright1.PNG"),new Image("res/heroright2.PNG"),new Image("res/heroright1.PNG"),new Image("res/heroright3.PNG")};
  Image[] walkLeft ={new Image("res/heroleft1.PNG"),new Image("res/heroleft2.PNG"),new Image("res/heroleft1.PNG"),new Image("res/heroleft3.PNG")};


  //animation for walking up
  movingUp = new Animation(walkUp,duration);
  ////////////////////

  //animation for walking down
  movingDown = new Animation(walkDown, duration);
  ////////////////////

  //animation for standing(none)
  standingfront = new Animation(standingf, duration);
  ////////////////////

  //animation for right walking
  movingRight = new Animation(walkRight,duration);
  ////////////////////

  //animation for left walking
  movingLeft = new Animation(walkLeft,duration);
  ////////////////////

  //sprite's starting animation(he doesn't move,front sprite
  Hero = standingfront;
  ///////////////
     }

public void render(GameContainer gc,StateBasedGame sbg,Graphics g) throws SlickException{
    /////////////drawing a map!
    //rendering background
    tileMap1.render((int)spritePosisionX, (int)spritePosisionY,background);
    //rendering blocked tiles
    tileMap1.render((int)spritePosisionX, (int)spritePosisionY,blocked);
    //rendering grass tiles
    tileMap1.render((int)spritePosisionX, (int)spritePosisionY,grass);
    //rendering water tiles
    tileMap1.render((int)spritePosisionX, (int)spritePosisionY,water);
            ///////////drawing a player
    Hero.draw(shiftX,shiftY);
    /////////////
    //rendering tiles which cover the sprite
    tileMap1.render((int)spritePosisionX, (int)spritePosisionY,coveringSprite);
    //////////////
    ///////drawing name
    g.drawString(spriteName, shiftX-12, shiftY -20);
    /////////

    //////////////////////drawing player position
    g.drawString("PlayerPos: "+ spritePosisionX +"," + spritePosisionY, 340, 10);
   ////////////////////////////////////////////////
    //drawing mouse position!
    g.drawString(mouse, 440, 30);
    //////////////////////////////
}

public void update(GameContainer gc,StateBasedGame sbg,int delta)throws SlickException{
    coveringSprite = tileMap1.getLayerIndex("coveringUs");
    background = tileMap1.getLayerIndex("background");
    blocked = tileMap1.getLayerIndex("block");
    grass = tileMap1.getLayerIndex("grass");
    water = tileMap1.getLayerIndex("water");
    tileMap1.getTileId(1,1,blocked);
    //key,mouse input
    Input input = gc.getInput();


    //up
    if(input.isKeyDown(Input.KEY_W) && input.isKeyDown(Input.KEY_A) ||input.isKeyDown(Input.KEY_D)){
    }
    else if(input.isKeyDown(Input.KEY_W)){
              spritePosisionY += delta * 0.09f;
                Hero=movingUp;
          }     
    //down
    if(input.isKeyDown(Input.KEY_S) && input.isKeyDown(Input.KEY_D) ||input.isKeyDown(Input.KEY_A)){
    }
    else if (input.isKeyDown(Input.KEY_S)){
    Hero=movingDown;
    spritePosisionY -= delta * 0.09f;
    }


    //left
    if(input.isKeyDown(Input.KEY_A) && input.isKeyDown(Input.KEY_S) ||input.isKeyDown(Input.KEY_W)){
    }
    else if(input.isKeyDown(Input.KEY_A)){
        spritePosisionX += delta * 0.09f;
        Hero=movingLeft;
    }

    //right
    if(input.isKeyDown(Input.KEY_D) && input.isKeyDown(Input.KEY_S) ||input.isKeyDown(Input.KEY_W)){
    }
    else if(input.isKeyDown(Input.KEY_D)){
        spritePosisionX -= delta * 0.09f;
            Hero=movingRight;
    }


    //mouse position
    int MouseX= Mouse.getX();
    int MouseY= Mouse.getY();
    mouse = "Mouse Posison:" + MouseX + "," + MouseY;
}

public int getID(){
    //state ID
    return 1;
}

}

Answer 1

更好的方法是使用图块属性。您可以通过打开图块集，选择所有图块并单击添加属性按​​钮来执行此操作。在那里你选择布尔值并将其命名为“solid”。您可以使用此代码段检查tiles属性：

    List<Rectangle> collisionList = new ArrayList<Rectangle>();
    for(int i=0;i<tiledMap.getWidth();i++){
        for(int j=0;j<tiledMap.getHeight();j++){
            for(int a=0;a<getLayerCount();a++){
                String property = tiledMap.getTileProperty(tiledMap.getTileId(i, j, a), "solid", "null");
                if(property.equals("null")){
                    throw new SlickException("Failed to get tileproperty!");
                }else if(property.equals("true")){
                    collisionList.add(new Rectangle(i*getTileWidth(),j*getTileHeight(),getTileWidth(),getTileHeight()));
                }
            }
        }
    }

然后你可以像这样实现播放器动作：

        Rectangle collision = new Rectangle(x,y,playerSizeX,playerSizeY);
    float deltaX = x;
    float deltaY = y;
    if (input.isKeyDown(Input.KEY_LEFT)|input.isKeyDown(Input.KEY_A)){
        sprite = left;
        deltaX -= delta * 0.1f;
    }else if (input.isKeyDown(Input.KEY_RIGHT)|input.isKeyDown(Input.KEY_D)){
        sprite = right;
        deltaX += delta * 0.1f;
    }
    if (input.isKeyDown(Input.KEY_UP)|input.isKeyDown(Input.KEY_W)){
        sprite = up;
        deltaY -= delta * 0.1f;
    }else if (input.isKeyDown(Input.KEY_DOWN)|input.isKeyDown(Input.KEY_S)){
        sprite = down;
        deltaY += delta * 0.1f;
    }
    float clipX = x;

    collision.setLocation(deltaX+offsetX,y+offsetY);
    if(!intersects(collision)){
        sprite.update(delta);
        x = deltaX;
    }
    collision.setLocation(clipX+offsetX,deltaY+offsetY);
    if(!intersects(collision)){
        sprite.update(delta);
        y = deltaY;
    }

这里方法与（）相交：

public boolean intersects(Rectangle player) {
    for(int i=0; i<collisionList.size(); i++){
        if(collisionList.get(i).intersects(player)){
            return true;
        }
    }
    return false;
}

Answer 2

你可以尝试为每个瓷砖制作一个“矩形”对象（或者每个瓷砖都是实心的）

Rectangle tile = new Rectangle(x,y,width,height);  

然后为角色设置一个矩形对象。

Rectangle character = new Rectangle(x,y,width,height); 

然后，使用“for循环”运行切片贴图并检查碰撞。例如

for(int i=0; i<tileMap1.size(); i++){
    if(character.intersects(tileMap1[i].tile){
    //Do something..
    }
}