Slow Down Execution of Script

[Selacius]

I have a function in my exploration system which I effectively want to use as a means to get the player to automatically move (somewhat like automatic cut scene). The code I am using is

	function movedown (num) {		if (num > 0 ){			player.y++;			draw_map (player.y, player.x);			setTimeout(movedown(num-1), 3000)		}	}

Which works, except that when I move onto the tile with the script, I immediately move the "num" of tiles down from my current position, instead of moving down in a stepwise fashion.Any hints?

[Synook]

When you write setTimeout(movedown(num-1), 3000), you are actually calling movedown() immediately, and assigning the return value (nothing) to be called after three seconds. However, since this causes recursion, you get movedown() being called again, as fast as possible, until num > 0 is false.The solution is to use a wrapper function:

setTimeout(function() {	movedown(num-1);}, 3000);

[Selacius]

Perfect. That works exactly how I want it. Will just need to adjust the delay. Now, my next question is, why would my eval statement not be working in this line of code:

script = maps.scripts[player.y][player.x].split("|");			for (i=0; i < script.length; i++) {				eval (script[i]);			}

The script variable is an array which will contain the functions which are to be automated (move left, down, right, up). So I want to loop through the length of this array and process the functions one at a time. Currently it only does the first function and then ends.

[thescientist]

are you sure script has more than one index?

[Selacius]

Yes, it certainly does. If I forgo the For statement and manually tell it to eval the two indices of the array I move on a left downward diagonal.

[thescientist]

what if you do something like this:

script = maps.scripts[player.y][player.x].split("|");for (i=0; i < script.length; i++) {  evalMe(i);};function evalMe(index){  eval(script[index]);};

[Selacius]

Nope, that still doesn't work.:S

[Synook]

Try alerting out the string to be evaluated, to check whether it's what you think it is.

[Selacius]

Ive tried that in attempts to debug the script. When I alert it only pops up the first portion of the script variable (index 0) and does not show index 1. So its not proceeding onto the 2nd eval line. However when I remove eval from the for statement it alerts both index 0 and 1.