坐标对的2D弹丸运动

因此，我试图沿屏幕上鼠标位置指示的方向移动弹丸。我已经将鼠标坐标转换为游戏中坐标，但是我无法弄清楚如何将弹丸正确地移动到正确的方向。我正在尝试使用一个坡度来移动弹丸，但是它似乎并不想抓住正确的坡度，因此我最终使它们以完全错误的方向飞行。这是我正在使用的一些代码。在此方面的任何帮助将不胜感激，因为我对此有些不知所措。

注意：射弹不跟随鼠标。它应该保存坐标，然后朝那个方向前进，注意它也可以相同的速率经过给定的坐标。

实体创作

int[] mousePos = MouseManager.getCalculatedMouseCoordinates();
                float deltaX = mousePos[0] - GameManager.x;
                float deltaY = mousePos[1] - GameManager.y;
                float m = deltaY/deltaX;
                System.out.println(m);
                GameManager.currentWorld.addEntity(new EntityProjectile(GameManager.x, GameManager.y, 30, m, 50, "fireball"));

弹丸类

    package UnNamedRpg.Player.Entity;

public class EntityProjectile {

    private double x, y;
    private int entityID = -1;
    private int speed;
    private double headerX, headerY;
    private int renderHeading;
    private double range, currentRange = 0;
    private String texture;
    private double factor = -1;
    public EntityProjectile(double startX, double startY, int speed, double headerX, double headerY, double range, String texture){
        setX(startX);
        setY(startY);
        setSpeed(speed);
        setHeaderX(headerX);
        setHeaderY(headerY);
        setTexture(texture);
        setRange(range);
    }

    public void doTick(){
        double vx = this.x - this.headerX;
        double vy = this.y - this.headerY;
        if(this.factor == -1){
            double length = Math.sqrt((vx*vx) + (vy*vy));
            double factor = this.speed / length;
            this.factor = factor;
        }
        vx *= factor;
        vy *= factor;
        this.x = vx;
        this.y = vy;
    }

    public int getSpeed() {
        return speed;
    }

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

    public int getRenderHeading() {
        return renderHeading;
    }

    public void setRenderHeading(int renderHeading) {
        this.renderHeading = renderHeading;
    }

    public int getEntityID() {
        return entityID;
    }

    public void setEntityID(int entityID) {
        this.entityID = entityID;
    }

    public double getX() {
        return x;
    }

    public void setX(double x) {
        this.x = x;
    }

    public double getY() {
        return y;
    }

    public void setY(double y) {
        this.y = y;
    }

    public String getTexture() {
        return texture;
    }

    public void setTexture(String texture) {
        this.texture = texture;
    }

    public double getRange() {
        return range;
    }

    public void setRange(double range) {
        this.range = range;
    }

    public double getCurrentRange() {
        return currentRange;
    }

    public void setCurrentRange(double currentRange) {
        this.currentRange = currentRange;
    }

    public double getHeaderX() {
        return headerX;
    }

    public void setHeaderX(double headerX) {
        this.headerX = headerX;
    }

    public double getHeaderY() {
        return headerY;
    }

    public void setHeaderY(double headerY) {
        this.headerY = headerY;
    }

    public double getFactor() {
        return factor;
    }

    public void setFactor(double factor) {
        this.factor = factor;
    }
}

更新职位方法

-现在，每一个滴答声都在EntityProjectile类中调用，而不是在世界滴答声中发生。