- #1
Jamin2112
- 986
- 12
I figured out what the bug in my code is, but now I need to figure out how to best remedy it.
Here's my function:
The problem is in the bolded block. I want to refer to the outer function's member body, but I realize it's instead referring to move's nonexistent member body. What is the best way to remedy this?
Here's my function:
Code:
function snake(C, C_h, C_w)
{
/* NOTE TO SELF: C is a Raphel object. Can't find a method to return the height
and width of a Raphael object in the documentation:
[PLAIN]http://raphaeljs.com/reference.html#Raphael.[/PLAIN]
Using C_h and C_w for now, but should probably change it later.
*/
this.linkSize = 10; // size of a snake unit, in pixels
/* On instantiation, the snake direction is down and has 1 link */
this.dy = this.linkSize;
this.dx = 0;
this.link = C.rect(C_h/2, C_w/2, this.linkSize, this.linkSize);
this.link.attr("fill", "#d7a900");
this.body = [this.link];
/* Event listener for changing the direction of the
snake with arroy keys on the keyboard
*/
this.redirect = function(dirnum)
{
switch (dirnum)
{
/*
dirnum corresponds to
1 ---> right
2 ---> down
3 ---> left
4 ---> up
*/
case 1:
this.dx = this.linkSize;
this.dy = 0;
break;
case 2:
this.dx = 0;
this.dy = this.linkSize;
break;
case 3:
this.dx = -this.linkSize;
this.dy = 0;
break;
case 4:
this.dx = -this.linkSize;
this.dy = 0;
break;
default: // never happens
break;
}
}
[COLOR="Red"][B] this.move = function()
{
/*
...
*/
var temp = this.body[0];
this.body[0].translate(this.dx, this.dy);
for (var i = 1, j = this.body.length; i < j; ++i)
{
this.body[i] = temp;
temp = this.body[i];
}
}[/B][/COLOR]
this.mover = setInterval(this.move, 500);
}
The problem is in the bolded block. I want to refer to the outer function's member body, but I realize it's instead referring to move's nonexistent member body. What is the best way to remedy this?
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