SkeletalMesh "Dissapears" at some angles

[alvarofer0021]

hello again and as the title says im again having an issue with an KassetSpawnable


I can spawn it fine with no issues but as soon i start moving or rotating it will dissapear at some angles as example if i rotate to my right the model will dissapear but then if i keep going until i rotated to my back the model will appear again in the perfect spot its like it just becomes invisible but keeps following the player rotation and movement

So far this is what i got

class SV_Campfire extends KAssetSpawnable;


var string BuildingName;
var MaterialInstanceConstant matInst;
var MaterialInstanceConstant MMat,RMat;
var PhysicsAsset RPA,MPA;
var bool bPlaceable,bReady,bSpawned;
var int BuildPC;
var SkeletalMesh MMesh,RMesh;




function SetCollisionOff()
{
       bCollideWorld = false;
      bBlockActors = false;

}

function SetCollisionOn()
{
bCollideWorld = true;
bBlockActors = true;
}

function CheckLocation(vector NewLoc)
{

local Actor Actor;

bPlaceable = true;
SetPlaceable();

  ForEach VisibleCollidingActors(class'Actor', Actor, 2.0, NewLoc, true,, true)
      {
	   SetUnPlaceable();
       bPlaceable = false;
        break;
      }
	
}



function SetUnPlaceable()
{
matInst = new(None) Class'MaterialInstanceConstant';
 matInst.SetParent(MaterialInstanceConstant'SV_Buildings.Materials.Building_UnPlacebleMat_INST');
    //SkeletalMeshComponent.SetMaterial(0, matInst);



}

function SetPlaceable()
{

matInst = new(None) Class'MaterialInstanceConstant';
 matInst.SetParent(MaterialInstanceConstant'SV_Buildings.Materials.Building_PlacebleMat_INST');
   // SkeletalMeshComponent.SetMaterial(0, matInst);

}

function setDefaultMat(MaterialInstanceConstant Mat)
{
matInst = new(None) Class'MaterialInstanceConstant';
 matInst.SetParent(Mat);
    //SkeletalMeshComponent.SetMaterial(0, matInst);
}

simulated event TakeDamage (int DamageAmount, Controller EventInstigator, Object.Vector HitLocation, Object.Vector Momentum, class<DamageType> DamageType, optional TraceHitInfo HitInfo, optional Actor DamageCauser)
{

BuildPC = BuildPC + DamageAmount;


if(BuildPC >= 50)
{
SetMeshAndPhysAsset(MMesh,MPA);
MMat = new(None) Class'MaterialInstanceConstant';
 MMat.SetParent(MMat);
    //SkeletalMeshComponent.SetMaterial(0, MMat);

}

if(BuildPC >= 100)
{
SetMeshAndPhysAsset(RMesh,RPA);
RMat = new(None) Class'MaterialInstanceConstant';
RMat.SetParent(RMat);
    //SkeletalMeshComponent.SetMaterial(0, RMat);
bReady = true;
}

}


defaultproperties
{
    Begin Object Name=KAssetSkelMeshComponent
        //SkeletalMesh=SkeletalMesh'phystest_resources.RemadePhysBarrel'
        Scale=1.0f
		BlockRigidBody = true
    End Object
	
	BuildPC = 0


    bCollideWorld=true
    bHidden=false
	BuildingName = "nopo"
    bCollideActors=true

    //bWakeOnLevelStart=true
    bDamageAppliesImpulse=true
}

to spawn the kasset

if(Building.bIsCampfire == true)
				
				{
				     Pawn.Mesh.GetSocketWorldLocationAndRotation(BuildSocketStart, StartLoc);
		        EndLoc = vector(Pawn.Rotation) * 100+ StartLoc;
                Trace(HitLocation, HitNormal, StartLoc, EndLoc,true,,, //TraceHitActor = 
                TRACEFLAG_Bullet);
				
                
				 PA = PhysicsAsset(DynamicLoadObject(Building.campfirePA, class'PhysicsAsset'));
				  RPA = PhysicsAsset(DynamicLoadObject(Building.campfireRPA, class'PhysicsAsset'));
				  MPA = PhysicsAsset(DynamicLoadObject(Building.campfireMPA, class'PhysicsAsset'));
				  
				  Mesh2 = SkeletalMesh(DynamicLoadObject(Building.campfireModel, class'SkeletalMesh'));

				HalfMesh = SkeletalMesh(DynamicLoadObject(Building.campfireMModel, class'SkeletalMesh'));
				ReadyMesh = SkeletalMesh(DynamicLoadObject(Building.campfireRModel, class'SkeletalMesh'));
                 CampfireToSpawn = Spawn(class'SV_Campfire', self,, EndLoc); //pawn.location

                bIsBuilding = true;
                bCanBuild = true;
                tfpPawn(Pawn).bSpawnedBuilding = false;
                
                CampfireToSpawn.SetMeshAndPhysAsset(Mesh2,PA);
   
				 CampfireToSpawn.MMesh = HalfMesh;
				 CampfireToSpawn.RMesh = ReadyMesh;
				 CampfireToSpawn.RPA = RPA;
				 CampfireToSpawn.MPA = MPA;

		       
			     CampfireToSpawn.BuildingName = Building.buildingName;
                Mat = MaterialInstanceConstant(DynamicLoadObject(Building.campfireMat, class'MaterialInstanceConstant'));
				HalfMat = MaterialInstanceConstant(DynamicLoadObject(Building.CampfireMMat, class'MaterialInstanceConstant'));
				ReadyMat = MaterialInstanceConstant(DynamicLoadObject(Building.CampfireRMat, class'MaterialInstanceConstant'));
		         CampfireToSpawn.MMat = HalfMat;
			     CampfireToSpawn.RMat = ReadyMat;
				// CampfireToSpawn.SetPhysics(PHYS_Flying); // if i try to change its physics it stops following the player movement
				
			
				}

and to update the position

function UpdateBuildPosition()
{
    local Vector BuildPos,dir;


P = tfpPawn(Pawn);
    

        dir = Vector(Pawn.Rotation);

		  BuildPos = tfpPawn(Pawn).GetPawnViewLocation() + dir  * BDDistance * PerDistance; 
        BuildPos.Z = BuildPos.Z - 75;

     
		  
		  
		  
		  if(CampfireToSpawn.bPlaceable == true)
          {
          CampfireToSpawn.SetLocation(BuildPos);
          CampfireToSpawn.CheckLocation(BuildPos);
          CampfireToSpawn.SetCollisionOff();

          }
          
          if(P.bSpawnedBuilding == true)
          {
           bIsBuilding = false; 
           bCanBuild = true;
           CampfireToSpawn.setDefaultMat(Mat);
		   CampfireToSpawn.SetCollisionOn();
		    HUDClass.CloseBDUI();

          }
          
    
          
          if(CampfireToSpawn.bPlaceable == false)
          {
          CampfireToSpawn.SetLocation(BuildPos);
          CampfireToSpawn.CheckLocation(BuildPos);
          CampfireToSpawn.SetCollision(false,false,false);
          }
		  
		  
		  
          
    }
}

[alvarofer0021]

Ok so it seems that the mesh keeps following the player rotation and movement becouse i tried logging its location and whatever its visible or not it seems to print the location fine... Now i wonder why it suddenly becomes invisible

[meganaut]

Could it be a lighting environment issue? have you tried adding a light Environment component?

[alvarofer0021]

Im almost sure the KAsset class alredy has it

heres a video showing the issue

[Spoof]

That looks like a possible culling issue: the engine isn't rendering the object because its bounds are outside the view.

I tried reading through your code but as soon as I saw multiple physics assets loaded dynamically I gave up and made a cup of tea There are a couple of ideas you could investigate to solve this.

1
The bounding box of the physics asset may be different to the visible mesh. Or it could be offset. Try tilting the view up and down.

2
All though the mesh appears to move with the pawn it's possible the asset is stationary where it was spawned. You could place a debug draw at the spawn point and check if the mesh disappears when that point leaves the view.

These are just guesses. It's tricky to know what's really going on because the concept is a 'campfire' while the visual is a 'stick', and then there's a lot of indirection from dynamically loaded assets.

[alvarofer0021]

Well ill explain a bit the campfire

basicly since the campfire can be "Upgraded" basicly once certain actions the campfire changes its model and phys asset Thats why i load all tree of them from the Ini file(using sapitu and dynamicloadobject) and then i store all this references in the class instance

So for my building system i made a few changes so it supports an skeletal mesh so i can create a few bones and attach an particle system to smiulate the fire and finally an mesh that will represent the wood

also about the second option i tough it was completly dissapearing once it leaved the view but i tried loging its location and it seems that whatever it was Visible or not it would still print the location forward or back whatever i started to move

[alvarofer0021]

Ok so its definitly an problem with the skeletal mesh i even tried using an kactorspawnable sub class to see if it was the KassetSpawnable class being an issue so Or either UDK For some reason doesnt render the mesh at some angles and thats why i cant see it Or well i cant think of anything more that could cause it

Also why does this happends with an skeletal mesh? i tried using an static mesh instead and it would render fine

[VendorX]

...
i tried using an static mesh instead and it would render fine

Because SM has PHYS_None, you should disable physics and collision in KActor when attached...

[reinrag]

if you are right vendorx then i was right you are the best

[VendorX]

@yahooanswers: I'm afraid, without full code this will be lucky guess...
How are you?

[Spoof]

I've reproduced similar behaviour in the editor by borking the bounds of the skeletal mesh. Use the show bounds console command and test your problem again, you should find the mesh vanishes when the box/sphere bounds leave the view.

[alvarofer0021]

So any tips to handle the mesh bounds?

[alvarofer0021]

Bumping the post

[Jetfire]

Theres a bounds multiplier param in the skelmesh properties iirc. Increase it. But since bounds are taken from the physasset, and noone knows what physasset you're using, ymmv

[alvarofer0021]

Oh well i tried checking arround the phys asset and the skeletal mesh bounds scaling them etc but whatever i do it seems that they just stay in the same spot whatever the Mesh is spawned rather than following it

[alvarofer0021]

once again Bump