old code

目前,我正在尝试制作一个游戏,用鼠标控制一个会移动的方块,收集小球。每次产生球时,都会出现敌人,并以线性路径移动。

我的程序试图实现这一目标,但是敌人都立刻生成,并且只向右移动。食物在食用后不会消失。取而代之的是,当我移动鼠标时,食物会在整个地方闪烁,而敌人则全部移向右侧。我不确定如何使食物出现一次并停留在那儿,然后当玩家吃掉它时,它消失并产卵另一些卵,并产生一个左右移动或上下移动并反弹的敌人离开墙壁。

我想将食物放在一个地方,然后在吃的时候删除食物,然后再随机产生另一个。

我正在尝试make something similar to this.

谢谢你的帮助。

编辑:@AJC的答案中基于psuedocode的新代码

import java.util.ArrayList;
import java.util.Random;

public class Game{
    public static void main(String[] args) {
        StdDraw.setXscale(0,100);
        StdDraw.setYscale(0,100);

        int foodX = 0;
        int foodY = 0;

        ArrayList enemyXPos = new ArrayList();
        ArrayList enemyYPos = new ArrayList();
        ArrayList enemySpeeds = new ArrayList();
        int score = 0;
        Random rand = new Random();

        while (true) {
            double playerX = StdDraw.mouseX();
            double playerY = StdDraw.mouseY();
            StdDraw.clear();

            int enemyX = 0, enemyY = 0;


            if (playerX == foodX && playerY == foodY) {
                score += 1;

                foodX = rand.nextInt(100);
                foodY = rand.nextInt(100);


                enemyX = rand.nextInt(100);
                enemyY = rand.nextInt(100);

                enemyXPos.add(enemyX);
                enemyYPos.add(enemyY);
                int enemySpeed = rand.nextInt(20);
                enemySpeeds.add(enemySpeed);
            }

            for (int j = 0; j < enemyXPos.size()-1; j++) {
                if ((int) enemyXPos.get(j) == playerX && (int) enemyYPos.get(j) == playerY) {
                    break;
                }

            }
            for (int j = 0; j < enemyXPos.size()-1; j++) {
                enemyXPos.add(j, (int) enemyXPos.get(j) + (int) enemySpeeds.get(j));
                enemyYPos.add(j, (int) enemyXPos.get(j) + (int) enemySpeeds.get(j));
            }


            StdDraw.setPenColor(StdDraw.BLUE);
            StdDraw.filledCircle(playerX, playerY, 5);

            StdDraw.setPenColor(StdDraw.GREEN);
            StdDraw.filledCircle(foodX, foodY, 2);

            for (int j = 0; j < enemyXPos.size()-1; j++) {
                StdDraw.setPenColor(StdDraw.RED);
                StdDraw.filledCircle(enemyX, enemyY, 2);
            }
            StdDraw.show();
        }
    }
}

最佳答案

您的代码中有几个问题


您在每个游戏循环中都将食物设置为随机位置,因此食物不会停留在一处。您需要记住当前食物的位置,并仅在玩家触摸时设置一个新位置
敌人全部由一个变量控制,因此它们显然都将朝同一方向移动
还有其他一些逻辑缺陷,例如当玩家不移动时,其他对象的更新会被跳过
我还建议将代码分为几部分,例如将绘制和更新周期分开


新的伪代码:

Variables:
 - Current food position
 - List of enemy positions
 - List of enemy velocities

Game loop:
    //Update stuff
    Get mouse location
    Set player location to mouse location

    If player is touching food then
        Increase score
        Set food position to random position
        Spawn new enemy:
            Add new random position to enemy position list
            Add new random velocity to enemy velocity list
    End if

    For each enemy:
        If enemy is touching player than
            End game
        End if
    End for

    For each enemy:
        Update enemy location:
            Add velocity of enemy to position of enemy
            (posX=posX+velX)
            (posY=posY+velY)
    End for

    //Draw stuff
    Draw player
    Draw food
    For each enemy:
        Draw that enemy
    End for
End game loop

关于java - 食物闪动,在躲避游戏中不被食用,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/37821435/

10-11 20:31