用户名未正确跟随

Question

你好，我正在开发一个游戏，现在我正在尝试让用户名跟随角色，我让屏幕跟随角色，但是当屏幕开始跟随角色时，字符串开始飞走我已经尝试了一切，包括为它制作单独的 X 和 Y。这是我的代码，请帮助：

import java.awt.image.BufferedImage;
import java.awt.Toolkit;
import org.newdawn.slick.*;
import org.newdawn.slick.state.*;
import org.newdawn.slick.GameContainer;
import org.newdawn.slick.Graphics;
import org.newdawn.slick.Input;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.state.BasicGameState;
import org.newdawn.slick.state.StateBasedGame;
public class Play extends BasicGameState {
    private BufferedImage screen = new BufferedImage(Core.HEIGHT, Core.WIDTH, BufferedImage.TYPE_INT_RGB);
    Animation now, moveUp, moveDown, moveRight, moveLeft;
/*
    Image Up1;
    Image Up2;
    Image Down1;
    Image Down2;
    Image Right1;
    Image Right2;
    Image Left1;
    Image Left2;
*/  
    Image map;
    Image collision;

    boolean exitMenu = false;
    int[] duration = {200, 200};
    int escapeInt = 1;
    int Y = 150;
    int X = 150;
    public String currentUser = "Evan";
    int usernameY;
    int usernameX;
    int camY;
    int camX;
    int WORLD_SIZE_X = 5000;
    int WORLD_SIZE_Y = 5000;
    int VIEWPORT_SIZE_X = 1366;
    int VIEWPORT_SIZE_Y = 768;
    int offsetMaxX = WORLD_SIZE_X - VIEWPORT_SIZE_X;
    int offsetMaxY = WORLD_SIZE_Y - VIEWPORT_SIZE_Y;
    int offsetMinX = 0;
    int offsetMinY = 0;

    public Play(int state) {
    }
    public void init(GameContainer gc, StateBasedGame sbg) throws SlickException {
        /*
        Up1 = new Image("res/Up1.png");
        Up2 = new Image("res/Up2.png");
        Down1 = new Image("res/Down1.png");
        Down2 = new Image("res/Down2.png");
        Right1 = new Image("res/Right1.png");
        Right2 = new Image("res/Right2.png");
        Left1 = new Image("res/Left1.png");
        Left2 = new Image("res/Left2.png");
        */
        Image[] walkUp = {new Image("res/Up1.png"), new Image("res/Up2.png")};
        Image[] walkDown = {new Image("res/Down1.png"), new Image("res/Down2.png")};
        Image[] walkRight = {new Image("res/Right1.png"), new Image("res/Right2.png")};
        Image[] walkLeft = {new Image("res/Left1.png"), new Image("res/Left2.png")};
        moveUp = new Animation(walkUp, duration, false);
        moveDown = new Animation(walkDown, duration, false);
        moveLeft = new Animation(walkLeft, duration, false);
        moveRight = new Animation(walkRight, duration, false);
        now = moveDown;

        map = new Image("res/Map.jpg");
        collision = new Image("res/Collision.png");


    }
    public void update(GameContainer gc, StateBasedGame sbg, int delta) throws SlickException {
        Input input = gc.getInput();
        if(input.isKeyDown(input.KEY_W)) {
            Y -= 1;
            usernameY = Y;
            now = moveUp;
        }
        if(input.isKeyDown(input.KEY_S)) {
            Y += 1;
            usernameY = Y;
            now = moveDown;
        }
        if(input.isKeyDown(input.KEY_A)) {
            X -= 1;
            usernameX = X;
            now = moveLeft;
        }
        if(input.isKeyDown(input.KEY_D)) {
            X += 1;
            usernameX = X;
            now = moveRight;
        }
        if(input.isKeyDown(input.KEY_ESCAPE)) {
            System.exit(3);
        }
        camX = X - VIEWPORT_SIZE_X / 2;
        camY = Y - VIEWPORT_SIZE_Y / 2;
        if (camX > offsetMaxX){ camX = offsetMaxX; }
        if (camX < offsetMinX){ camX = offsetMinX;}
        if (camY > offsetMaxY){ camY = offsetMaxY; }
        if (camY < offsetMinY){ camY = offsetMinY;}
    }
    public void render(GameContainer gc, StateBasedGame sbg, Graphics g) throws SlickException {
        g.translate( -camX, -camY);
        map.draw(0,0);
        collision.draw(0, 0);
        now.draw(X, Y);
        g.drawString("X: "+X+"   " + "Y: "+ Y, 20 + camX, 20 + camY);
        g.drawString(currentUser, usernameX + camX, usernameY + camY);
}


    public int getID() {
        return 3;
    }
}

Answer 1

您应该插入相对于字符的用户名。尝试使用g.drawString(currentUser, X, Y);

之后你可以把它居中。

注意：最好将此代码放在单独的类中Player扩展Animations。你可以给它一些方法walkLeft、walkRight、jump ,..和一些属性，例如username、hp、.。这将简化您的游戏类。并且更容易理解玩家对象及其x和y，因为您正在在同一级别上调整所有内容。