rigid body editor

[botbuilder]

Just wondering-anybody working on an editer to apply rigidbodies to static meshs? I'm not very far. all I have is the gui. nothing actually functions yet.



I just realized that spmeone else might be working on this and I could either stop, help that person, or just release my source for furtherr dev. If anyone wants to help, their welcome, etc. I'll be releasing the source if anyone wants it, and at release.

[GhostDag]

I am going to have to make a rigidbody editor sooner or later for my project,i'm just waiting for the wrapper to be completed & documented.I've made an editor for the previous physics sistem , the one that was using verlets ,it was messy and had a v poor interface ,but it served his goal.I would gladly help

How would you make a rigid link between two rigid bodies ,using jointlimits with anglelimit 0 ?

Sweenie ,when are you planning the next release?

[botbuilder]

Actually, it's very simple. if you check out my table/chair demo, you can see that actaully, the commands TOKRB_Add* commands are of the Geometry class in tokamak. These commands return a geometry handle. So, basically, you create one rigid body and add all your primitives. then, (new in .3), you can call TOKGEOM_SetPositionAndRotation to rotate and position the various objects in one rigid body. Okay, so my description might sound a little complex, but all you have to do is:

rb(i) = TOKRB_Create()
TOKRB_AddBox rb(i),20.0,1.0,20.0
TOKRB_SetPosition rb(i),0,20,0
TOKRB_SetLinearDamping rb(i),0.001
TOKRB_SetAngularDamping rb(i),0.002
TOKRB_SetMass rb(i),2.0
TOKRB_SetBoxInertiaTensor rb(i),20.0,10.0,20.0,2.0
TOKRB_SetSleepingParameter rb(i),0
TOKGEOM_SetPositionAndRotation TOKRB_AddBox(rb(i),2.0,10.0,2.0),9,-5,9,0,0,0
c=CreateCube(obj(i))
ScaleEntity c,1,5,1,1
PositionEntity c,9,-5,9,1

this creates my table with only one leg .

Eventually, this editer might support joints, however, it's initial design will not be so.

I'll work on it a bit more, then post it up. in it's current state it would be hard to have anyone help with it.

[botbuilder]

ok - here's one thing I'd like help on. I have a central camera pivot that will be in the same position the rigid object is. Now I'd like to have the camera rotate around the pivot based on mouse movements. I've already tried turnetity on the center pivot. does wierd stuff. I'm just looking for somthing like the stuff you see in 3d editers.(max;truespac etc.)

[GhostDag]

God ...i didn't notice the "addBox" function in .3 ;D

Here is some code i put together to help you out



Graphics3D 800,600,16
Global mxs#,mys#,c_smooth_angle#,p_smooth_angle#,p_angle#,c_angle#
Global c_mousez

Global plane=CreatePlane()
EntityBlend plane,3

;******************* Texture

Global texture=CreateTexture(256,256)
SetBuffer TextureBuffer(texture)

Color 0,0,0
Rect 0,0,256,256

Color 255,255,255

Line 128,0,128,256
Line 0,128,256,128

SetBuffer BackBuffer()

ScaleTexture texture,10,10
EntityTexture plane,texture



;********************


Global camera=CreateCamera()
Global pivot1=CreatePivot()
Global pivot2=CreatePivot()

EntityParent pivot2,pivot1
EntityParent camera,pivot2

MoveEntity camera,0,0,-20

Global cube=CreateCube()
EntityColor cube,255,100,100

c_mouseZ=MouseZ()

While Not KeyDown(1)

Mouse_look()
Mouse_zoom()

UpdateWorld()
RenderWorld()

Flip

Wend

Function Mouse_look()

mxs#=MouseXSpeed()/4.0
mys#=MouseYSpeed()/4.0

MoveMouse GraphicsWidth()/2,GraphicsHeight()/2

p_angle#=(p_angle#-mxs#)  
 If p_angle#>360 Then
   p_angle#=p_angle#-360
   p_smooth_angle#=p_smooth_angle#-360
 EndIf
 If p_angle#<0 Then
   p_angle#=p_angle#+360
   p_smooth_angle#=p_smooth_angle#+360
 EndIf
 
 c_angle#=(c_angle#+mys#)
 If c_angle#>360 Then
   c_angle#=c_angle#-360
   c_smooth_angle#=c_smooth_angle#-360
 EndIf
 If c_angle#<0 Then
   c_angle#=c_angle#+360
   c_smooth_angle#=c_smooth_angle#+360
 EndIf
 
 p_smooth_angle#=p_smooth_angle#-((p_smooth_angle#-p_angle#)/2.5)
 c_smooth_angle#=c_smooth_angle#-((c_smooth_angle#-c_angle#)/2.5)
 
 
 RotateEntity pivot1,0,p_smooth_angle#,0
 RotateEntity pivot2,c_smooth_angle#,0,0

 

End Function

Function mouse_zoom()

If c_mousez<MouseZ() Then

c_mousez=MouseZ()
If EntityDistance(camera,cube)>10 Then MoveEntity camera,0,0,3

End If

If c_mousez>MouseZ() Then

c_mousez=MouseZ()
MoveEntity camera,0,0,-3

End If


End Function





hope it helps.Use the mousescroll to zoom in and out

[botbuilder]

cool. it's integrated. I'll post code once I have the addition of boxes.

[botbuilder]

I decided to put it up for critique on the gui/camera movement/ etc. so, here it is.

blitzstuff.250free.com/zips/Tok_RB_Editer.zip (36.6 KB)

don't get hopeful. 0 functionality right now. However I think the gui is nice

[GhostDag]

Damm 250free.com .Seems like my ip class is banned.I can't download anything from there . Mail me the editor [e-mail] ,im really curious

[StOrM3]

I would also be interested in helping out on this project.. I am at work today, but will download it when I get home tonight. I think this could really help out development of game projects with awesome physics of Tokamak implemented much easier, than coding everything manually.

Thanks again, to sweenie and everyone helping out on this.

Ken

[raye]

This function is missing within in the download:
OpenFileDialog$()

[botbuilder]

oops. sorry. Left out a dll. Now the zip is updated. Now it's about 47K. Put the decl and dll files in your userlib folder.

Also sent it to ghostdag.

[botbuilder]

okay - I fixed the grid. now it is transparent as it should be.


Global gridtex=CreateTexture(256,256,2)
tb=TextureBuffer(gridtex)
SetBuffer tb
 Color 0,0,0
 Rect 0,0,256,256
 Color 255,255,255
 Rect 0,0,256,20
 Rect 0,0,20,256
 LockBuffer tb
 For x=1 To 255
  For y=1 To 255
   p=ReadPixelFast(x,y,tb)
   If (p And $FF)=0 Then WritePixelFast x,y,0,tb
  Next
 Next
 UnlockBuffer tb
SetBuffer BackBuffer()


Replace the stuff that was creating the texture before with this.

Sorry for anyone who doesn't like the usage of gosubs, I can make them functions if you like. I just thought it was sorta rediculus - they are only called in one place and they have no parameters. I just did it that way to split it up into sections

[botbuilder]

All the people who do not nativly speak english will be happy - I added multilingual support and babelfished my text file so now we have English,French,German,Italian,Spanish, and Portuguese! hehehe. Well, whenever text is added, it'll require a bit more work, but eh. I think it's pretty cool.

[GhostDag]

Nice work bot builder .Lets do this thing

[botbuilder]

ok. here's a new ver. This time I decided to uploaded external files seperate from source, as source will be updated more frequently. If anyone speaks french,german, italian, portuguese, or spanish, then it would be helpful to check the translations. if you fix anything, send the corrected version to me at bot_builder56 AT fastmail.fm (change AT to @).

Here's the external files: blitzstuff.250free.com/zips/Tok_RBE_External.zip

and the source:
blitzstuff.250free.com/other/tok_RBE.bb

And yes, I'll email it to you ghostdag.