Gideros 3D

MoKaLux

Let me create this thread to talk about general Gideros 3D stuff.

I will start with the currently supported 3D formats:
- you can import .obj
- you can import .glb
- you can import fbx (with or without animations) through fbxconv.

All the above supported formats work on all os: android, windows, html5?, cannot tell for other os but should work fine according to forum feedback

There is although a catch with .glb:
- glb files with embedded image textures ONLY work on desktops

I am working on it DONE, see post below

MoKaLux

MoKaLux said:

There is although a catch with .glb:
- glb files with no image textures (only vertex color) work on all os
- glb files with embedded image textures ONLY work on desktops

I am working on it

Great news, I got it working on my android with the help of hito9

There is the updated 3d-anim sample https://github.com/mokalux/GIDEROS_LUAU_SAMPLES/tree/main/3D-Anim
@hito9 could you please check if it is working now for linux ?

PS: I learnt a bit more about Gideros Buffer https://wiki.gideros.rocks/index.php/Buffer + I updated the wiki https://wiki.gideros.rocks/index.php/File_system as I could understand it

hito9

MoKaLux said:

There is the updated 3d-anim sample https://github.com/mokalux/GIDEROS_LUAU_SAMPLES/tree/main/3D-Anim
@hito9 could you please check if it is working now for linux ?

@MoKaLux, Confirm , 3D-Anim, 3DDemo1, 3D_Collisions issues has been fixed for Linux too.

MoKaLux said:

PS: I learnt a bit more about Gideros Buffer https://wiki.gideros.rocks/index.php/Buffer + I updated the wiki https://wiki.gideros.rocks/index.php/File_system as I could understand it

Me too thanks to you.

MoKaLux

Glad it is working pull request to gideros GH sent

I got 3d-Anim working on my old samsung S5

PS: reactPhysics3D crashes on me on android

hito9

MoKaLux said:

PS: reactPhysics3D crashes on me on android

Can you post your backtrace log for @hgy29 . As I remember it was easy to debug with Android studio.

MoKaLux

yes I am trying this with android studio but I need to find the as plugin to connect my phone via wifi (too lazy to connect it via usb )

EDIT: FYI here is the debug log for reactphysics3d
2022-03-23 09:42:43.586 5462-5495/? A/libc: Fatal signal 7 (SIGBUS), code 1 (BUS_ADRALN), fault addr 0xc3c8f4ae in tid 5495 (GLThread 3155), pid 5462 (deros.myplayer2)
2022-03-23 09:42:43.642 5534-5534/? E/crash_dump32: unknown process state: t
2022-03-23 09:42:43.701 5534-5534/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
...
2022-03-23 09:42:43.703 5534-5534/? A/DEBUG: pid: 5462, tid: 5495, name: GLThread 3155 >>> com.gideros.myplayer2 2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #00 pc 0007f1b8 /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/libreactphysics3d.so (reactphysics3d::Set, std::__ndk1::equal_to>::add(reactphysics3d::PhysicsWorld* const&)+376) (BuildId: 27861399df68658ff5a6bef14ee8cf8e4ba316a5)
2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #01 pc 0007f010 /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/libreactphysics3d.so (reactphysics3d::PhysicsCommon::createPhysicsWorld(reactphysics3d::PhysicsWorld::WorldSettings const&)+84) (BuildId: 27861399df68658ff5a6bef14ee8cf8e4ba316a5)
2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #02 pc 0002d000 /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/libreactphysics3d.so (BuildId: 27861399df68658ff5a6bef14ee8cf8e4ba316a5)
2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #03 pc 0004f608 /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/liblua.so (BuildId: 3ee4fcbdd4478ca757e431b177f16d920dfcc349)
2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #04 pc 0002c520 /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/liblua.so (BuildId: 3ee4fcbdd4478ca757e431b177f16d920dfcc349)
2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #05 pc 00023ec4 /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/liblua.so (lua_call+36) (BuildId: 3ee4fcbdd4478ca757e431b177f16d920dfcc349)
2022-03-23 09:42:43.946 5534-5534/? A/DEBUG: #06 pc 001483dd /data/app/com.gideros.myplayer2-rKjp2Uokf6LbMgpBUHDttQ==/lib/arm/libgideros.so (BuildId: db5e5e7af1c5709e2476d1cd2a2a1740c01f3421)

I will see what I can get out of this.

MoKaLux

I tried to narrow down the error and found it crashes when creating the r3d world:

LevelX = Core.class(Sprite)   local r3d = require "reactphysics3d"   function LevelX:init() -- create r3d physics world self.world=r3d.World.new(0, 0, 0) -- CRASH -- self.world={} -- NO CRASH -- some lists to store coming objects (deco, bodies, ...) self.world.deco = {}

I am trying to found out how

FYI: r3d doesn't work on html5 as well

MoKaLux

I have an issue with r3d and collision detection nothing seems to work
Before I could write this:

g_world:setEventListener(function() -- missiles vs enemies collisions for k,v in pairs(g_missiles01) do for k1,v1 in pairs(g_enemies02) do if g_world:testAABBOverlap(v.body, v1.body) then g_score += 10 self.scoretf:setText("SCORE :"..g_score) ... end end end -- player1 vs enemies collisions for k,v in pairs(g_enemies02) do if g_world:testAABBOverlap(v.body, self.player1.body) then self.lives -= 1 self.livestf:setText("LIVES: "..self.lives) ... end end end)

But this no longer works.
When I try various collision detection (testCollision, testAABBOverlap, testOverlap) I have errors like these:

-- world listener self.world:setEventListener(function() print("xxx") end) -- BUG!?

ERROR: scenes/levelX.lua:74: Failed to step world, something is not set up correctlyhttps://github.com/mokalux/GIDEROS_LUAU_SAMPLES/blob/21b0fea1097ccc02aecc16ea9e7416aa4a72d1a5/R3D_TypeTH/assets/scenes/levelX.lua#L39

function LevelX:player1CollisionCallBack() print("player1 down!") print(self.tiled_level.player1.view) -- BUG!? end -- test collisions self.world:testCollision(v, self.tiled_level.player1.body, self.player1CollisionCallBack) -- BUG!?

ERROR: player1 down!
scenes/levelX.lua:53: attempt to index nil with 'player1'
stack traceback:
scenes/levelX.lua:53: in function player1CollisionCallBack
scenes/levelX.lua:134: in function onEnterFramehttps://github.com/mokalux/GIDEROS_LUAU_SAMPLES/blob/21b0fea1097ccc02aecc16ea9e7416aa4a72d1a5/R3D_TypeTH/assets/scenes/levelX.lua#L134
...

I have a sample project on GH if somebody is willing to have a look: https://github.com/mokalux/GIDEROS_LUAU_SAMPLES/tree/main/R3D_TypeTH

Thank you

MoKaLux

I need your insights
How can we use https://wiki.gideros.rocks/index.php/R3d.World:setEventListener ?

From reactbinder.cpp there is:

class GidEventListener: public EventListener { public: lua_State *L; int cbn; virtual void onContact( const CollisionCallback::CallbackData& ci) { int nbc=ci.getNbContactPairs(); for (int k=0;k

But in lua when I try to add this code to 3D Collisions sample code:

r3d=require "reactphysics3d"   -- Create physics world local world=r3d.World.new(0,-9.8,0)   -- various collision detection function collisionsEventListener() print("collision") end world:setEventListener(collisionsEventListener)

I have this error:
Uploading finished.
main.lua:88: Failed to step world, something is not set up correctly

Anybody ?

hgy29

It is a bug introduced by the switch to luau. I have fixed it for next release.

MoKaLux

Thank you hgy29 your fix works fine but I am sorry to tell there are some more bugs? regarding r3d collisions and destroy body? or is it me?

stage:addEventListener(Event.ENTER_FRAME,function(e) -- destroy body before world step? if box02.body.isdirty then box02.body.isdirty = false print("box02 is dirty is true, try to destroy it!") -- world:destroyBody(box02.body) -- CRASH! end ...

here is a sample project which crashes gideros player with no information

PS: I tried figuring it out myself but too little experience with c++

MoKaLux

and a sample project with testAABBOverlap crash
Sorry to bother guys

hgy29

@MoKaLux, in your first test it crashes because you keep querying the body (body:getTransform()) after having destroyed it. I will try to add more sanity checks to avoid crashing in these cases.

hgy29

@MoKaLux, second test is even easier: testAABBOverlap function isn't implemented

MoKaLux

Perfect capitain thank you.

MoKaLux

thanks to hgy29 I managed to put a 3d collision 2. I would like to propose it as an additional demo to gideros build?
It demonstrates quite a few steps:
- r3d.Fixture:setMaterial(material)
- destroybody
- move body with arrow keys

It is the same as current 3d collision, so we could also change it with this new demo? What do you think?