Download image and set it as texture of sprite (SOLVED)

Questions
#1

Hello guys. I would like download image from server and then set it as texture of sprite. Download image from server is pretty easy, here is part of code:

	http.request(url, "GET", function(self, id, res)
	if res.status ~= 200 and res.status ~= 304 then
		print("Unable to get image", res.response)
		return
	end

	local img = image.load(res.response)
	if not img then
		print("Unable to load image")
		return
	end

The problem is that i do not know what to do next. I have tried something like this:

resource.set_texture( go.get("#sprite", "texture0"), some header, img.buffer )

but img.buffer is in string format. So my question is that is there some easy workaround to download image from server and set it as texture of sprite?
Thanks

1 Like
#2

This is probably what you are looking for:

3 Likes
#3

Thank you @britzl, but unfortunately i have already tried this extension without success. Maybe i just srewed up so i will adress next questions to creator of extension. Thanks a lot :slight_smile:

#4

What kind of problems did you run into? Did it crash? Did you get any errors in the console? Share the code that used!

#5

Hi. Here is the code:

local function load_and_set_texture(url)
    http.request(url, "GET", function(self, id, res)
	if res.status ~= 200 and res.status ~= 304 then
		print("Unable to get image", res.response)
		return
	end

	local img = image.load(res.response)
	if not img then
		print("Unable to load image")
		return
	end

	local img_resource = imageloader.load{data = img.buffer}

	pprint(img_resource)
	
	resource.set_texture( go.get("#sprite", "texture0"), img_resource.header, img_resource.buffer )
    end)
end

The problem is that line

imageloader.load{data = img.buffer}

return

DEBUG:SCRIPT: 
{ --[[0000027F34426190]]
header = { --[[0000027F344261E0]]
num_mip_maps = 1,
width = 0,
channels = 0,
height = 0,
type = 3553
}}

As you can see there is no buffer in table and what is fishy that also width and height equal zero.

#6

What if you save the response to disk and then load it instead of loading the response directly?

#7

You should not use image.load() and imageloader.load()! Try:

local img_resource = imageloader.load{data = res.response}
1 Like
#8

Wow @britzl that worked like a charm. Thank you for fast reply. If anyone have hard time with this problem here is the final code of function that works:

local function load_and_set_texture(url)
    http.request(url, "GET", function(self, id, res)
	if res.status ~= 200 and res.status ~= 304 then
		print("Unable to get image", res.response)
		return
	end

	local img_resource = imageloader.load{data = res.response}
	resource.set_texture( go.get("#sprite", "texture0"), img_resource.header, img_resource.buffer )
    end)
end
3 Likes