setting polygon texture

[raft]

I have a merged object which is serialized with desktop jPCT. i change textures of some polygons during the course of the game. this works fine in desktop jPCT. but in AE I got some strange behaviour:

* with one subobject to change texture this works fine
* with a couple subobjects, i only get a result by setting texture of first one and this operation sets textures of other subobjects too. setting texture on other subobjects has no effect

i suspect this thing requires, build(false) method. if this is the case, there is no such method in AE, how can i serialize such an object from desktop jPCT?

i've also tried calling compile(true) before serialization but didnt help.

[EgonOlsen]

Try to set Config.aggressiveStripping=false;

[raft]

didnt help. the merged object is already stripped before serialization, does it make a difference?

[EgonOlsen]

That shouldn't matter. I'm still not 100% sure what you are actually doing...you have some object that is a merge result of some other objects using different textures. And you compile this thing von Android and it splits into different sub-objects, because of the different textures. You then replace the textures of some of these compiled sub-objects? How?

[EgonOlsen]

BTW: You can't set textures using TextureInfo on a compiled and stripped object anyway. The method simply returns without doing anything. The method that uses the texture ID should work though.

[raft]

exactly. my level consists of several types of tiles. i merge them into one, compile strip and serialize. meanwhile i also save polygon limits and vertex limits of tiles. here i depend on the fact, during merging polygon and vertex orders are preserved.

then in Android, i set texture via PolygonManager:

Code Select Expand

PolygonManager.setPolygonTexture(polyId, textureId);

if i have only one of a certain tile type T all goes well. if i have many tiles of type T, then the problem above happens. setting texture on second and third has no effect, setting texture on first one sets texture of all three

[raft]

i use subobject in a different meaning here. i call every tile as a subobject but in your terminology, several tiles of same type (single texture) make a subobject.

[EgonOlsen]

I see...well, that won't work. Compilation happens based on the textures. You can't change the texture of some inbetween polygons without triggering a complete recompilation again...if IIRC, this isn't supported anyway. A solution is to put all textures into one and just change u/v-mapping. That requires no new compilation, "just" a new fill of the native buffers, which isn't particularly fast either, but depending on the frequency in which this happens, it might be fast enough.

[raft]

mm, i see. that's kind of bad news. i will think of the uv thing

[raft]

on some cases i need to set texture of all tiles of some kind. seems as this happens automatically at the moment, if i set first one all is set. can i count on this?

[EgonOlsen]

As long as they don't split into several sub-objects when compiled, then yes. Or simply use setTexture() in Object3D itself.

[raft]

i cant use setTexture here. because these are merged with other kind of tiles. i want to set textures of all tiles of a kind

[raft]

i preferred to put two tiles with different textures on same place and hide/show one of them via VertexController as discussed in this thread. this may be slightly more expensive but seemed easier to me. one obvious advantage is i can use the tiles as they are modelled/textured in a 3d editor.