AS3 - 更改有关MC的深度，另一 [英] AS3 - Changing depth of MC in relation to another

问题描述

我试图让使用稍微3D精灵这种自上而下的游​​戏。我希望能够让玩家走在前面，以及背后，任何对象他来。

I am trying to make this top-down game that uses slightly 3D sprites. I want to be able to make the player walk in front of, as well as behind, any object he comes to.

像，如果他是在另一对象后面有一定的距离，他会移动它的后面，如果他更接近其他对象的面前，他会移动在它的前面。

Like, if he's a certain distance behind another object, he'll move behind it and if he's closer to the front of the other object, he'll move in front of it.

任何想法？

推荐答案

每次玩家的动作，你需要评估每个应用项目的y位置和排序Z顺序/ childIndex基于关闭的。

everytime the player moves, you need to evaluate the y position of each applicable item and sort the z-order/childIndex based off that.

因此​​，如果您所有的对象，以走在后面/盈和你的性格是在一个父精灵叫前台：

so if all your 'objects' to walk behind/infront of and your character were in a parent sprite called foreground:

function sortZ(){
    var arrayOfStuff:Vector<DisplayObject> = new Vector<DisplayObject>();

    var i:int;
    for(i=0;i<foreground.numChildren;i++){
        arrayOfStuff.push(foreground.getChildAt(i));
    }

    arrayOfStuff.sort(sortArrayByY);

    for(i=0;i<arrayOfStuff.length;i++){
        foreground.setChildIndex(arrayOfStuff[i],i);
    }
}

function sortArrayByY(valA:DisplayObject, valB:DisplayObject):int {
    if(valA.y == valB.y) return 0;
    if(valA.y > valB.y) return 1;
    return -1;
}

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