Smooth transition from vector to vector?

[Rocky]

Hi.

Is it possible to have smooth transition between two vectors? I am trying to implement aiming sights in unreal, where player holds the AltFire button and the PlayerViewOffset of weapon smoothly translates to a new vector.

I tried to do this and it kind of works though not smoothly as expected.

Code: Select all

class ASMDTest extends ASMD;


//summon ironsighttest.asmdtest

var() vector AimSightOffset;
var bool bAltIronSight;
var float DT;

replication
{
      reliable if(ROLE == ROLE_Authority)
            AimSightOffset;
}

function PlayFiring()
{
      Owner.PlaySound(FireSound, SLOT_None, Pawn(Owner).SoundDampening*4.0);
      PlayAnim('Fire1', 5.5,0.05);
}

simulated function PostRender(Canvas C)
{
      Super.PostRender(C);

      C.Font = Font'SmallFont';
      C.Style = ERenderStyle.STY_Translucent;
      C.DrawColor.R = 255;
      C.DrawColor.G = 255;
      C.DrawColor.B = 255;

      C.SetPos(0, 0.2 * C.ClipY);
      C.DrawText("bAltIronSight: "@bAltIronSight);
      C.SetPos(0, 0.25 * C.ClipY);
      C.DrawText("AimTime: "@AimTime);
      C.SetPos(0, 0.3 * C.ClipY);
      C.DrawText("PlayerViewOffset.X: "@PlayerViewOffset.X);
      C.SetPos(0, 0.32 * C.ClipY);
      C.DrawText("PlayerViewOffset.Y: "@PlayerViewOffset.Y);
      C.SetPos(0, 0.34 * C.ClipY);
      C.DrawText("PlayerViewOffset.Z: "@PlayerViewOffset.Z);

      if(!bAltIronSight)
            return;

      if(ClientIsAiming())
      {
            /*PlayerViewOffset.X = AimSightOffset.X;
            PlayerViewOffset.Y = AimSightOffset.Y;
            PlayerViewOffset.Z = AimSightOffset.Z;*/

            if(PlayerViewOffset.X = default.PlayerViewOffset.Y)
                  PlayerViewOffset.Y = default.PlayerViewOffset.Y;
            else
                  PlayerViewOffset.Y += 500 * DT;

            //PlayerViewOffset.Y = default.PlayerViewOffset.Y;
            PlayerViewOffset.Z = default.PlayerViewOffset.Z;

            FireOffset.Y = -default.FireOffset.Y;
      }
}

function Tick(float DeltaTime)
{
      DT = DeltaTime;
}

simulated function bool ClientIsAiming()
{
      return (bAltIronSight &&
                  Owner.IsA('PlayerPawn') &&
                  PlayerPawn(Owner).bAltFire!=0 && 
                  GetStateName()!='Active' &&
                  GetStateName()!='DownWeapon');
}

function AltFire(float Value)
{
      If (!Owner.IsA('PlayerPawn'))
      {
            Pawn(Owner).bFire = 1;
            Pawn(Owner).bAltFire = 0;
            Global.Fire(0);
      }
      if (!bAltIronSight)
            PlayerPawn(Owner).bAltFire = 0;

      if(!IsInState('Idle'))
            GoToState('Idle');
}

defaultproperties
{
      bAltIronSight=True
      PickupAmmoCount=5000
      AimSightOffset=(X=250.500000,Y=0.000000,Z=-100.000000)
      PlayerViewOffset=(X=350.500000,Y=150.800000,Z=-200.000000)
}

Does anyone have any better solution or hints for this?
Thanks.

[yrex .]

Code: Select all

function vector VSmerp(float alpha, vector A, vector B)
{
      alpha = FMin(1,FMax(alpha,0));
      
      // extra smooth
      alpha = -cos(alpha*3.1415926535)/2+0.5;
      
      return B*alpha + A*(1-alpha);
}

Not tested.

[Rocky]

Thank you very much. Your code is working the way I wanted.

[Shivaxi]

Code looks similar to how Bleeder and I did our ironsights aiming function in RLCoop or even our EarthWepzFoRealz mod, even using the same names like ClientIsAiming haha.  But we had it with a smooth transition already.  I don't know how it worked though, would have to ask Bleeder since he coded that.

[Rocky]

Code looks similar to how Bleeder and I did our ironsights aiming function in RLCoop or even our EarthWepzFoRealz mod, even using the same names like ClientIsAiming haha.  But we had it with a smooth transition already.  I don't know how it worked though, would have to ask Bleeder since he coded that.

For ClientIsAiming I asked Gizzy to use his code from CS227 when I was porting CS 1.6 weapons and CS:S weapons to UT and he gave me permission to use it.
I tried EarthWepzFoRealz mod and I didn't see any transition from hip to aiming sight.

[Shivaxi]

Code looks similar to how Bleeder and I did our ironsights aiming function in RLCoop or even our EarthWepzFoRealz mod, even using the same names like ClientIsAiming haha.  But we had it with a smooth transition already.  I don't know how it worked though, would have to ask Bleeder since he coded that.

For ClientIsAiming I asked Gizzy to use his code from CS227 when I was porting CS 1.6 weapons and CS:S weapons to UT and he gave me permission to use it.
I tried EarthWepzFoRealz mod and I didn't see any transition from hip to aiming sight.

Yeah we were working off of Gizzy's code as well for EarthWeps haha, hence the same variable names, that's what I meant.  We never got the smooth transition into EarthWepz but it IS in RLCoop right now (on a server can look stuttery though with our method, single player is smooth).