2
我是javascript的新手。我已经编写如下:为什么我的函数未定义?
function Vec2(x_,y_)
{
this.x = x_;
this.y = y_;
}
文件中后来我创建一个函数是这样的:
// Init game field array
var initGameField = function() {
var screenCenter = vec2(canvas.width/2, canvas.height/2);
var index = 0;
// Init gamefieldArray
for(var y = 0; y < maxVerticalBubbles; y++)
{
if(y%2)
{
for(var x = 0; x < maxHorizontalBubbles - 1; x++)
{
var initPoint = vec2(cellSize/2 + (screenCenter.x - ((maxVerticalBubbles - 1) * cellSize/2)) + (x * cellSize),
canvas.height/2 + (cellSize/2) + y * cellSize/1.1);
gameFieldArray[index] = initPoint;
}
}
else
{
for(var x = 0; x < maxHorizontalBubbles; x++)
{
var initPoint = vec2(cellSize/2 + (screenCenter.x - (maxVerticalBubbles * cellSize/2)) + (x * cellSize),
canvas.height/2 + (cellSize/2) + y * cellSize/1.1);
gameFieldArray[index] = initPoint;
}
}
}
}
但是,当我试图在JavaScript的-file我得到的最终运行initGameField功能“initGameField”中的“vec2未定义”错误......应该如何做到这一点?为什么vec2没有被识别,因为它在initGameField函数之前和运行initGameField函数之前被引入?
他必须构造它,而不仅仅是调用。它应该是'var screenCenter = new Vec2(canvas.width/2,canvas.height/2);' – Esailija
谢谢,现在工作! :) – hedeic