Disable Tweening

Is there any way to bypass tweening for some objects using Mark's Tweening code that was included with b3D demo?

because i need to 'warp' an animated character to a position without having that weird trail

you can do the movement just before captureworld. Ie, queue them up with a type, then call captureworld as normal.

As Rob says, if you call the Warp function before CaptureWorld so your mainloop looks like this (i think):

warpstuff
captureworld
updateworld
renderworld

Unless you're applying this movement to a limb(I.e one being abused by an animated entity), in which case make a record and apply it after updateworld.

odd though ive been doing that, and it didnt work
heres a segment of the code

	While Not KeyHit(1)	

		Repeat
			elapsed=MilliSecs()-time
		Until elapsed
	
		ticks=elapsed/period
		tween#=Float(elapsed Mod period)/Float(period)
		
		For k=1 To ticks
			time=time+period
			If k=ticks

				If Warp_MHero = 1
					MoveEntity mHero,0,0,-107.974
					Warp_MHero = 0
				EndIf

				CaptureWorld
				Gosub CameraControl	;Camera Movement
				Gosub CharacterControl
				Gosub EnvironmentControl
				UpdateWorld
				Gosub PostAnimationControl
			EndIf
		Next

		RenderWorld tween#
		Gosub Draw2D
		Flip False
	Wend
	End

It's been a while so I'm a bit vague, the MoveEntity is only taking effect at UpdateWorld so..., I think this is one of those times you need to either use PositionEntity or a call to ResetEntity is needed in addition to the MoveEntity.

I think that the current tweening system definitely needs an overhaul. An entity flag that disables tweening would be a brilliant addition.

i just tried with positionentity and even resetentity, but it doesnt work :(

would there be any other work around?

I agree. Tweening needs a command to do for tweened entities what 'ResetEntity' does for collision entities (ie. Re-prime the entity's tween data so it behaves as though it was already at the position it has been moved to)

You could make the entity invisible for a short time.

That's still an ugly work around, though. I never could get tweening *just* right in Juno. In fact, for the menu, I enable back face culling on the gui for a frame as it fades in in order to get rid of the very nasty effects of tweening on newly created entities.

Don't use tweening. I use the delta time method for making my code framerate independent.

I used to use delta time in my main project but I had to switch my physics integrator from simple euler to verlet due to numerical instabilities. Due to the need for a fixed timestep for the verlet integrator, render tweening was a better fit.

Tweening is pretty good. It just comes up short of being as good as it needs to be. All it needs is a 'ResetTweenEntity/CaptureEntity' style command.

Tweening is perfect for physics. Tigerz, can you post a full example demonstrating this technique failing to work? pref with spheres as it should work.

ok sure, ill upload something in a few hours (got school in a few)

i just tried it on a sphere and theres no problem, it only happens when its on an animated (boned character) entity...

so im gonna have to find another way of doing things

AGREED! This happens in all my apps and no I don'#t want to use Delta Timing. Come on BRL...

I asked for this yonks ago.

Perhaps something similar to "resetentity" for tweening. :)

What's the best way to get this requested?

I would love for BRL to actually do this.

Maybe if we just keep this thread going long enough it will create a response.
I've had this problem for years....thought it was just my lousy coding techniques. :)
I seem to spend hours creating ugly work around code.

A new command to do this, would be to me, what the DDS feature was for Mustang....absolute bliss. :)

I've tried Rob's idea of calling a movement function just prior to the CaptureWorld and while this works I suppose this in itself is really just a work around.

>I would love for BRL to actually do this.

Me too.

Well,

I have emailed Blitz Support and Mark directly. I'm thinking that perhaps a DisableEntityTweening function would not be the best way to do this but to add a flag to the positioning functions to state whether tweening should be employed, so...

PositionEntity entity, x, y, z, global, disable_tween

Anyhow we shall see.

http://www.blitzbasic.com/Community/posts.php?topic=45287#505241

Well yes, so is the answe rto use EntityType,0, postions then reset?

Is that the best option to solve this currently?

Not exactly elagant

Nonono, i was just pointing out a thread that proves we've been after it for yonks! :)

Ah. Well the request is with Mark. We shall see.

Well?...waiting....dum de dum...sigh

COME ON BRL!

Graphics3D 800,600,32,1

Sphere1 = CreateSphere()
PositionEntity Sphere1,-3,-3,0
Sphere2 = CreateSphere()
PositionEntity Sphere2,3,3,0
Camera = CreateCamera()
PositionEntity camera,0,0,-5
light = CreateLight()
RotateEntity light,45,45,0
lr = 0
Time = MilliSecs()
CaptureWorld
PositionEntity Sphere1,3,-3,0
While Not KeyHit(1)
	newtime = MilliSecs()
	delta = newtime - time
	
	tween# = delta / 2000.0
	If tween > 1.0
		If lr = 0
			lr = 1
			PositionEntity Sphere2,-5,3,0
			CaptureWorld
			PositionEntity Sphere1,-5,-3,0
		Else
			lr = 0
			PositionEntity Sphere2,5,3,0
			CaptureWorld
			PositionEntity sphere1,5,-3,0
		End If
		time = newtime
		tween = 0
	End If
	RenderWorld tween
	Text 10,10,tween
	Flip
Wend

Top sphere warps, bottom sphere tweens.

Cool BUT Marks render tweening code is structured like this...

	While g_main_state =  MAIN_STATE_GAME
		
		Starttime = MilliSecs()
		
		Repeat
			elapsed=MilliSecs()-frametime
		Until elapsed
		
		ticks=elapsed / period
		tween=Float(elapsed Mod period)/Float(period)
		
		For i=1 To ticks
			frametime=frametime+period
			If i=ticks Then
				CaptureWorld
			End If
			game_update()
			UpdateWorld
		Next
		
		RenderWorld tween 
		
		Flip
		
	Wend

notice the placement of the update_game routine.

Using your technique you would have to move the update to just prior to the capture. Not so good!