collisions problem

[cassius]

I have got oildrums,barrels etc in my game all of which have a convex hull type body.When the player collides with them they go haywire and fly around. This did not happen at first but has occured as I put more stuff in my code.In the log "failed to load sound" is the only warning or error.Seems to work ok in the editor.

 

SuperStrict

Framework leadwerks.framewerk

GCSetMode(2)

RegisterAbstractPath AppDir

Graphics(800, 600,32)

 

Global fw:TFramewerk = TFramewerk.Create()

If Not fw RuntimeError "Failed to initialize engine."

 

'Set global objects for lua scripted entities

SetGlobals()

 

'Set collisions

SetCollisions()

 

'Load scene

Local scene:TEntity = LoadScene("abstract::game02.sbx")

Local entity:TEntity

 

AmbientLight([0.3, 0.3, 0.3])

'debugphysics(1)

 

 

'create controller

Local player:TController = CreateController(1.8,0.5)

Local playermesh:TMesh =CreateCylinder(32)

ScaleMesh(playerMesh,Vec3(0.8,1.2,0.8))

 

HideEntity playermesh

EntityType player, 2

PositionEntity(player, StringToVec3(scene.getkey("cameraposition")))

 

SetBodyMass(player, 4.0)

 

'movement variables

Local move:Float = 0.0

Local strafe:Float = 0.0

Local camrotation:TVec3 = Vec3(0)

Local mx:Float = 0.0

Local my:Float = 0.0

Local jump:Float = 0.0

HideMouse()

'================================================

Local door_1:TEntity

Local key:TEntity

Local gotkey:Int = False

For Local e:TEntity = EachIn CurrentWorld().Entities

Select GetEntityKey(e, "Name")

Case "key"

key = TEntity(e)

Case "door_1"

door_1 = TEntity(e)

EndSelect

Next

'===================================================

Repeat

 

If KeyHit(KEY_ESCAPE) Exit

If AppTerminate() Exit

 

'camera movement

mx = Curve(MouseX() - GraphicsWidth() / 2, mx, 6)

my = Curve(MouseY() - GraphicsHeight() / 2, my, 6)

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

camrotation.X = camrotation.X + my / 10.0

camrotation.Y = camrotation.Y - mx / 10.0

RotateEntity(fw.Main.camera, camrotation)

 

'controller movement

move = KeyDown(KEY_W) - KeyDown(KEY_S)

strafe = KeyDown(KEY_D) - KeyDown(KEY_A)

jump:Float = 0.0

If KeyHit(KEY_SPACE) & Not ControllerAirborne(player)

jump = 4.0

End If

If KeyDown(KEY_LSHIFT) | KeyDown(KEY_RSHIFT)

move = move * 3.0

strafe = strafe * 3.0

End If

Local playerpos:TVec3 = EntityPosition(player)

playerpos.Y = playerpos.Y + 0.90

PositionEntity(fw.Main.camera, playerpos)

 

UpdateController(player, camrotation.Y, move * 6, strafe * 6, jump, 1500, 1)

 

If EntityDistance(player,key) < 2 And KeyHit(KEY_G)

HideEntity key

gotkey = True

EndIf

If gotkey = True

If EntityDistance(player,door_1) < 3

MoveEntity door_1,vec3(0.1,0,0)

EndIf

EndIf

 

PositionEntity playermesh,entityposition(player)

 

fw.Update()

fw.Render()

 

Flip(1)

Forever

fw.renderer.gbuffer = Null

GCCollect()

End

 

Function SetGlobals()

'SetGlobalObject("listener", CreateListener(fw.Main.camera))

SetGlobalObject("world_main", fw.Main.world)

SetGlobalObject("world_transparency", fw.transparency.world)

SetGlobalObject("world_background", fw.background.world)

SetGlobalObject("camera_main", fw.Main.camera)

SetGlobalObject("camera_transparency", fw.transparency.camera)

SetGlobalObject("camera_background", fw.background.camera)

SetGlobalObject("renderer_world", fw.renderer)

SetGlobalObject("fw", fw)

SetGlobalObject("listener", CreateListener(fw.Main.camera))

End Function

 

Function SetCollisions()

Collisions(1, 1, 1)

Collisions(1, 2, 1)

Collisions(1, 3, 1)

Collisions(2, 2, 1)

Collisions(2, 3, 1)

Collisions(3, 3, 1)

End Function

 

Function StringToVec3:TVec3(text:String, scale:Float = 1.0)

Local t:TVec3 = Vec3(1)

Local sarr:String[]

sarr = text.split(",")

If sarr

If sarr.length > 0 t.x = Float(sarr[0]) * scale

If sarr.length > 1 t.y = Float(sarr[1]) * scale

If sarr.length > 2 t.z = Float(sarr[2]) * scale

EndIf

Return t

EndFunction

[macklebee]

why do your oildrums have a convex hull body? I am pretty sure the prop's PHY that comes with LE is a cylinder...

 

also whats the point of the playermesh? and the constant positioning of it to the player? Assuming that it actually serves a purpose, just parent it to the player and be done with it...

 

whats the mass of your barrels? have you tried changing your acceleration? also that controller code doesn't have the character collision set correctly... it should be 3...

 

have you tried this with the version i posted in my blog?

[cassius]

I added the cube ( playermesh)because I was having the problem before. One of the oildrums came with the sdk I dont know the type of phy file it has but it flies around just the same. but thanks i will go back to your original code.

[macklebee]

ah... i think i found the problem... i don't know why this works but it does...

Collisions(1, 3, 3)

 

where 1 is the oildrum prop, 3 is the character, and the last 3? maybe swept collision?

[cassius]

I got rid of the cube (playermesh and changed entitytype player to 3. thanks again. It worked.

[macklebee]

I got rid of the cube (playermesh and changed entitytype player to 3. thanks again. It worked.

 

well, I am the one that had the code wrong to begin with... but right now i am not too sure why i thought collision response of 3 is swept collision? i can't find it any where in the wiki but for some reason i just thought it was...

 

yeah i guess i need to change that code in my blog as well... i didn't really test it as far as running into props... was just using to run around a scene and look at stuff for the most part atm...

[cassius]

I use convex hull mainly cos its such a pain doing anything else. Takes me ages to do spheres and cylinders.

[macklebee]

I use convex hull mainly cos its such a pain doing anything else. Takes me ages to do spheres and cylinders.

 

no i do that too... just was throwing things out there because i know the oildrum phy is not a convex hull... but i guess it was the wrong collision setting... but i be damned if i can find a response of 3 in the wiki...

[cassius]

I am still having the same collisions problem even with macklebee's corrected code but since around 50 other people have downloaded it and noone else has reported a similar problem I can only assume I am getting something wrong elsewhere, possibly in the editor, but I can't see what.

the game runs fine in the editor. I am using the version of phygen that came with 2.3 and all my models have new phy files.

[Marleys Ghost]

I have tried Macks code, the controller set to a body mass of 10, without the adjustment to the collisons that is:

 

Collisions(1, 3, 1)

 

The barrels will fly all over the place when bumped into .. but using the suggested adjustment:

 

Collisions(1, 3, 3)

 

They act normally for me.

[macklebee]

cassius, if you are comparing how my code reacts versus the fpscontroller ran in the editor, then you need to set everything exactly the same... the controller weight is different, the updatecontroller's (controller:Update() in lua) acceleration and iteration values are different... all of these things come into play.

 

anyone else find any reference to what 3 is in the collisions command?

[cassius]

Thanks for advice. Setting flip to 1 has helped. I had it on 0. Collisions now less violent.

[cassius]

I just found that adding a little body force to the player fixes the problem I had when the player seemed to go thru the oildrums. Now it makes them look solid and works just like in the editor.