Question

我正在寻找一个教程，帮助我每次点击一个箭头朝向鼠标。

这是我的代码：

import flash.events.*;
var xd:Number;
var yd:Number;
var radAngle:Number;
var size:int=25;
// size of the arrowshot
var arrowshotSpeed:int=50;
// defines some variables


function mcFunction(event:Event):void {

    xd=bowframe.bow.x-stage.mouseX;
    yd=bowframe.bow.y-stage.mouseY;
    // finds the x and y difference of the sprite and the mouse
    radAngle=Math.atan2(yd,xd);
    // finds the angle in radians 
    bowframe.bow.rotation = int(radAngle*360/(Math.PI*2)-90);

}

stage.addEventListener(Event.ENTER_FRAME, mcFunction);

function shootarrowshot(event:MouseEvent):void {
    var arrowshot:Sprite = new Sprite();
    with (arrowshot.graphics) {
        lineStyle(1, 0x000000, 1);
        moveTo(-size/2,-size);
        lineTo(size/2,-size);
        lineTo(size/2,size);
        lineTo(-size/2,size);
        lineTo(-size/2,-size);
    }
    addChild(arrowshot);
    //attaches
    arrowshot.x=bowframe.bow.x;
    arrowshot.y=bowframe.bow.y;
    arrowshot.rotation=bowframe.bow.rotation;
    // sets the arrowshot x,y, and rotation to the bowframe.bow
    arrowshot.addEventListener(Event.ENTER_FRAME, movearrowshot);
    // adds and enterFrame to the arrowshot, to move it
}
function movearrowshot(event:Event) {
    with (event.target) {
        // with the object that called the event
        x+= arrowshotSpeed*Math.sin(rotation*(Math.PI/180));
        y-= arrowshotSpeed*Math.cos(rotation*(Math.PI/180));
        // moves the arrowshot depending on its rotation, uses build in math sin and cos functions
        if (x>=550||x<=0||y>=400||y<=0) {
            // if the arrowshot is out of the screen
            event.target.removeEventListener(Event.ENTER_FRAME, movearrowshot);
            this.removeChild(DisplayObject(event.target));
            // removes the arrowshot sprite and the enterFrame on it
        }
    }
}
stage.addEventListener(MouseEvent.MOUSE_DOWN, shootarrowshot);

我也希望箭头和弓保持面向鼠标。

Answer 1

首先，你要这样做的方式似乎倒退了，但是嘿，如果它的工作正确的话！

http://www.freeactionscript.com/2011/07/projectile-weapon/

此链接将向您展示另一个人如何开发一个简单的射弹射击游戏。如果你想要弓和箭头基于由重力引起的弧度处理旋转所需要进行的主要更改。（除非你不打算使用重力计算）。看起来你会很好地找到计算。

在你的评论中，我不确定你的意思是“它还会在所有其他框架上创建一个子弹”

希望你能在本教程的帮助下完成这项工作。

编程角色进行拍摄

1 个答案: