7 replies to this topic

[exxod]

I have a list using ds_lists. I have never used ds_lists before so i'm kind of confused. The concept is easy to understand but when I used this:
var i, qId;
for (i=0; i<25; i+=1)
{
qId = ds_list_find_value(list,i)
if qId = 0
qId = ''
}

It gives me an error at 'if qId = 0' saying 'Cannot compare arguments'

I found a targeting example from Mark13673 and used those ds_list codes it still gave me an error. Is it because I need to have an 'else' after qId = ''?

Edited by exxod, 17 September 2009 - 10:55 AM.

[Xdaamno]

It's because you're the variable you're checking is a string. You can't compare a string with a number.

[exxod]

It's because you're the variable you're checking is a string. You can't compare a string with a number.

But even when i fix that to be a number it still gives me the error.

[MrOpposite]

var i, qId;
for (i=0; i<25; i+=1)
{
	qId = ds_list_find_value(list,i)
	if(is_real(qId))
	{
		if qId = 0
			qId = ''
	}
	else
	{
		if qId = '0'
			qId = ''
	}
}

try that?

[exxod]

Hmm. It seems to be working just fine, but then how would I make it so it draws the value if it is not 0. I have added values that are strings.

[FoxInABox]

var i, qId;

for (i=0; i<25; i+=1)

{

	qId = string(ds_list_find_value(list,i)) // I turn it to a string even if it is a real value



	if qId != '-1' and qId!='0'{ // check that it found something, and that it wasn't 0

		draw_text(x+(i div 5)*15,y+(i mod 5)*15,qId) // draw them inventory like 5*5 ..

	}



}

if they are originally real values .. then why store them as strings in the ds list?

[exxod]

var i, qId;
for (i=0; i<25; i+=1)
{
	qId = string(ds_list_find_value(list,i)) // I turn it to a string even if it is a real value

	if qId != '-1' and qId!='0'{ // check that it found something, and that it wasn't 0
		draw_text(x+(i div 5)*15,y+(i mod 5)*15,qId) // draw them inventory like 5*5 ..
	}

}

if they are originally real values .. then why store them as strings in the ds list?

Your code worked perfectly! Thanks. And the reason for storing them as strings is becuase when I added a value that was a string, all the empty places in the list draw themselves as 0. I did not want this.

[FoxInABox]

var i, qId;

for (i=0; i<25; i+=1)

{

	qId = string(ds_list_find_value(list,i)) // I turn it to a string even if it is a real value

	if (qId>0) { draw_text(x+(i div 5)*15,y+(i mod 5)*15,string(qId)); }

}

here is the code if you want to use real numbers, then you just check that it isn't 0 or -1 (no value found), if so draw it using string(qId)