getTextureRegion question

saeys · May 2015

Sorry for continuous questions here, but I think (hope) this is (another) small one:

I keep getting the error "TextureBase or TextureRegion expected, got nil" at the getTextureRegion line:

	puffs = TexturePack.new("texturepacks/puff.txt", "texturepacks/puff.png", true)
	for i = 0, 3 do
		puff[i] = Bitmap.new(puffs:getTextureRegion("puff0"..i..".png"))
	end

Clearly something that I'm missing here, just can't find it. Anyone?

hgy29 · May 2015

Are your textures in your texture packs actually named pbuff00.png, pbuff01.png and so on ?

SinisterSoft · May 2015

Plus the case is important - make sure the original filenames are lowercase too.

And also check to see if puffs is nil...

saeys · May 2015

Actually, they are named puff01.png up to 04, so the for statement should have been från 1 to 4 instead of 0 to 3.

Still the same error, though. Output says "puffs" is a table, is that right? File names are re-re-rechecked, all lower case.

SinisterSoft · May 2015

yes puffs should be a table.

make it no you have local texture=puffs:getTextureregion... then check texture for being nil. that way you can isolate the problem to either getting the region or creating the bitmap.

saeys · May 2015

You mean like this?

puff = Bitmap.new(puffs:getTextureRegion("puff01.png"))

Well, the error dissapears. So maybe there is an issue with the for loop and its syntax that I don't see or understand. I've copied and compared with several examples in other posts in this forum. And I really would like to use a for loop - more efficient and resource saving.

Btw, how do I get the nice coloured code format in posts? (instead of just yellow)

hgvyas123 · May 2015

as your name are like puff01.png, puff02.png,...

so you need to start your for loop from 1

try

puffs = TexturePack.new("texturepacks/puff.txt", "texturepacks/puff.png", true)
	for i = 1, 4 do
print("puff0"..i..".png")
		puff[i] = Bitmap.new(puffs:getTextureRegion("puff0"..i..".png"))
	end

also now you can compare your image name with actual image name as they will get print in console

saeys · May 2015

I got it, thanks @hgvyas123. The "for 0, 3 do" kept hanging around, naturally didn't work as the first file was numbered 01. Also, got confused about the other error messages I got as I hadn't defined the table with

local puff = {}

before the for loop. Going on with my life... ;-)

SinisterSoft · May 2015

lol, I thought you had fixed this when you spotted 'Actually, they are named puff01.png up to 04, so the for statement should have been från 1 to 4 instead of 0 to 3' was wrong above!

saeys · May 2015

Well, I had, but then I got another error at the same line because "puff" wasn't defined, so I thought the two errors generally was connected to each other somehow. :-)

And again, what tag can I use to display nicely coloured code in this forum? < pre lang = " something? " >

hgy29 · May 2015

yes, lang="lua"

saeys · May 2015

@hgy29 For me, lang="lua" makes

a yellow square

with black text. A previuos post says something about a source view setting, but I can't find that anywhere. Never mind, not that important. :-)

pie · May 2015

@saeys

just only one space in string between pre and lang

--<pre lang="lua">  //<pre_SPACE_lang="lua"> 
local test = test.new()

here I have another space between = and "lua"> (can't write it, it's being interpreted)
local test = test.new()

saeys · May 2015

Got it, thanks!

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