[solved] Issues setting tilesource image during runtime

Questions
#1

I am trying to set the tilesource (as in, replace the whole texture) to an image determined at runtime (the image dimensions are the same as the compiled tilesource).

i tried following along Changing texture for a tilesource at runtime to determine the location of the texture, but there’s not too much that was shown in that thread

here is the code i am running:



function settilemaptexture(texturedata)
	resource.set_texture("/main/tiles.t.texturesetc", texturedata.header, texturedata.buffer)
end

<different file>

	newtiledata=loaddata("testtextures/tiles.png") --this just reads data from a file relative to the script folder.
	if newtiledata then
		imgres=imageloader.load{data=newtiledata}
		if imgres then
			settilemaptexture(imgres)
		end
	end

currently, what i am doing crashes the engine

ERROR:CRASH: CALL STACK:

ERROR:CRASH:  0 0x7FF78206D3A0 dmCrash::GenerateCallstack D:\a\defold\defold\engine\crash\src\backtrace_win32.cpp:144
ERROR:CRASH:  1 0x7FF78242B838 raise /tmp/job8834229921072479505/minkernel/crts/ucrt/src/appcrt/misc/signal.cpp:547
ERROR:CRASH:  2 0x7FF78241BDC0 abort /tmp/job8834229921072479505/minkernel/crts/ucrt/src/appcrt/startup/abort.cpp:71
ERROR:CRASH:  3 0x7FF78241B0A4 common_assert_to_stderr<wchar_t> /tmp/job8834229921072479505/minkernel/crts/ucrt/src/appcrt/startup/assert.cpp:186
ERROR:CRASH:  4 0x7FF78241ABBC _wassert /tmp/job8834229921072479505/minkernel/crts/ucrt/src/appcrt/startup/assert.cpp:443
ERROR:CRASH:  5 0x7FF7820BFDF0 dmDDF::LoadMessage D:\a\defold\defold\engine\ddf\src\ddf\ddf.cpp:164
ERROR:CRASH:  6 0x7FF7820BFDD0 dmDDF::LoadMessage D:\a\defold\defold\engine\ddf\src\ddf\ddf.cpp:158
ERROR:CRASH:  7 0x7FF7821D1DD0 dmGameSystem::ResTextureSetRecreate D:\a\defold\defold\engine\gamesys\src\gamesys\resources\res_textureset.cpp:184
ERROR:CRASH:  8 0x7FF7820AD660 dmResource::SetResource D:\a\defold\defold\engine\resource\src\resource.cpp:1097
ERROR:CRASH:  9 0x7FF7821FC450 dmGameSystem::SetTexture D:\a\defold\defold\engine\gamesys\src\gamesys\scripts\script_resource.cpp:1493
ERROR:CRASH: 10 0x7FF781FE790E lj_BC_FUNCC <unknown>:0
ERROR:CRASH: 11 0x7FF7820648D0 lua_pcall <unknown>:0
ERROR:CRASH: 12 0x7FF7820968A0 dmScript::PCallInternal D:\a\defold\defold\engine\script\src\script.cpp:1401
ERROR:CRASH: 13 0x7FF7820FC690 dmGameObject::RunScript D:\a\defold\defold\engine\gameobject\src\gameobject\comp_script.cpp:142
ERROR:CRASH: 14 0x7FF7820FAF30 dmGameObject::CompScriptInit D:\a\defold\defold\engine\gameobject\src\gameobject\comp_script.cpp:183
ERROR:CRASH: 15 0x7FF7820CDA30 dmGameObject::InitComponents D:\a\defold\defold\engine\gameobject\src\gameobject\gameobject.cpp:1700
ERROR:CRASH: 16 0x7FF7820CA290 dmGameObject::InitCollection D:\a\defold\defold\engine\gameobject\src\gameobject\gameobject.cpp:1769
ERROR:CRASH: 17 0x7FF782150080 dmEngine::Init D:\a\defold\defold\engine\engine\src\engine.cpp:1340
ERROR:CRASH: 18 0x7FF78214EFC0 dmEngineCreate D:\a\defold\defold\engine\engine\src\engine.cpp:2152
ERROR:CRASH: 19 0x7FF782154CD0 dmEngine::RunLoop D:\a\defold\defold\engine\engine\src\engine_loop.cpp:68
ERROR:CRASH: 20 0x7FF78205ACB0 engine_main D:\a\defold\defold\engine\engine\src\engine_main.cpp:152
ERROR:CRASH: 21 0x7FF7823D44C4 __scrt_common_main_seh D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
ERROR:CRASH: 22 0x7FF80D047330 BaseThreadInitThunk <unknown>:0
ERROR:CRASH: 23 0x7FF80DBE2690 RtlUserThreadStart <unknown>:0

i’m not really sure what to do here

#2

I would start by using resource properties, as that is the simplest way to replace the texture. Here’s how to do it for a tilemap:

go.property("tilesource1", resource.tilesource("/assets/tilesource1.tilesource"))

function init(self)
    go.set("#mytilemap", "tile_source", self.tilesource1)
end

If you really need to load the image from disk then you need to make sure that you are loading the image from the correct location and then create a texture buffer from it and then use the correct APIs to replace. Here’s an example (shows how to replace a sub-image, but can be used to replace the entire image too):

1 Like
#3

i’ve gotten it to swap textures succesfully by using an atlas, however, the texture itself shows up invisible with tiles (i’m using a collectionfactory to make tiles so that i can chunk the map for better performance). the image shows up just fine loading it into a sprite, which uses very similar code.

still, i’d say it’s a step in the right direction considering the game doesn’t crash

updated code here:


---[[[<this script defines map-related functions>]]]

local _TEX
local _ATL

function settilemaptexture(texturedata)
	
	if not _TEX then
		_TEX=resource.create_texture("/main/_TILES_.texturec", texturedata.header, texturedata.buffer)
	else
		resource.set_texture(_TEX, texturedata.header, texturedata.buffer)
	end

		
	local wid,hei = texturedata.header.width,texturedata.header.height

	local atlasparams = {
		texture = _TEX,
		animations = {
			{
				id     = "tile",
				flip_horizontal = false,
				height = hei,
				fps = 1,
				flip_vertical = false,
				width = wid,
				playback = 0,
				frame_start = 1,
				frame_end = 2
			}
		},
		geometries = {
			{
				vertices  = {
					0,   0,
					0,   hei,
					wid, hei,
					wid, 0
				},
				uvs = {
					0,   0,
					0, hei,
					wid, hei,
					wid, 0
				},
				indices = {0,1,2,0,2,3}
			}
		}
	}

	if not _ATL then
		_ATL=resource.create_atlas("/main/_TILES_.texturesetc", atlasparams)
	else
		resource.set_atlas(_ATL, atlasparams)
	end

	_MAP_TEXTURE=_ATL


...

--[[<this part of a different script sets the texture for chunks>]]
		for i=1,#loadedchunks+1 do
			if loadedchunks[i] then
				local chunkchunk=loadedchunks[i][3]
				local tmp=msg.url(nil,chunkchunk,"chunk")
				if tmp then
				
					go.set(tmp, "tile_source", _MAP_TEXTURE)

				end
			end
		end

edit update: i have tried using the same parameter table that the tilesource atlas uses (using go.get and resource.get_atlas) and the issue still occurs

#4

I’m not sure if this is relevant (didn’t read through all the code), but one thing to keep in mind is that the top-left of a tilesource image is id: 1, but that position on the image resource itself is at y = image_height, so the y axis is flipped. Sometimes I see people trying to do some dynamic writing and reading from a tilesource or atlas and ending up with nothingness because they’re actually doing these operations on the bottom-left of the image, instead of the top-left.

#5

…but that position on the image resource itself is at y = image_height, so the y axis is flipped…

well, i’ve switched the posted atlas paramater table to use the same one that the existing tilesource uses, so i don’t imagine that’s what the issue is.
really what i’m doing at this point now is swapping the texture of the atlas and keeping everything else the same.

#6

ok so it turns out i wasn’t following the example close enough
though i find it weird that i can’t override the tilemap atlas but i can replace its texture just fine.