110 lines
2.9 KiB
C#
110 lines
2.9 KiB
C#
using Sandbox;
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using System;
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using System.Collections.Generic;
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using System.Threading;
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namespace VeloX;
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public partial class VeloXWheel
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{
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private static readonly GameObject SmokePrefab = GameObject.GetPrefab( "prefabs/particles/tire_smoke.prefab" );
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private GameObject SmokeObject { get; set; }
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public const float MIN_DRIFT_ANGLE = 10f;
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public const float MIN_DRIFT_SPEED = 30f;
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public const float MAX_DRIFT_ANGLE = 110f;
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private float smokeMul;
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private float timeMul;
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protected override void OnStart()
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{
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base.OnStart();
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if ( IsProxy )
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return;
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if ( !SmokeObject.IsValid() )
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SmokeObject = GameObject.GetPrefab( "prefabs/particles/tire_smoke.prefab" ).Clone( new CloneConfig() { Parent = GameObject, StartEnabled = true } );
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}
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public float GetSlip()
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{
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if ( !IsOnGround )
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return 0;
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var val = Math.Abs( LateralSlip ) + Math.Abs( LongitudinalSlip );
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timeMul = timeMul.LerpTo( val, 0.1f );
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if ( timeMul > 2 )
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return val;
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return 0;
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}
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protected override void OnUpdate()
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{
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base.OnUpdate();
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if ( IsProxy )
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return;
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UpdateSkid();
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SmokeObject.WorldPosition = ContactPosition + Vehicle.WorldRotation.Down * Radius.MeterToInch();
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smokeMul = Math.Max( 0, GetSlip() - 3 );
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bool density = false;
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if ( smokeMul > 0 )
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density = true;
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var emitter = SmokeObject.Components.Get<ParticleSphereEmitter>( FindMode.EverythingInSelfAndDescendants );
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emitter.Enabled = density;
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emitter.Radius = 0f;
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emitter.Velocity = 0;
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emitter.Duration = 5;
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emitter.Burst = 5;
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float sizeMul = 0.7f + smokeMul * 0.3f;
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emitter.Rate = smokeMul * 100f;
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emitter.RateOverDistance = smokeMul * 10f;
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var effect = SmokeObject.Components.Get<ParticleEffect>( FindMode.EverythingInSelfAndDescendants );
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effect.MaxParticles = 500;
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effect.Damping = 0.9f;
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effect.ApplyRotation = true;
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effect.ApplyShape = true;
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effect.Roll = new()
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{
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Type = ParticleFloat.ValueType.Range,
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Evaluation = ParticleFloat.EvaluationType.Seed,
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ConstantA = 0,
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ConstantB = 360,
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};
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effect.Scale = new()
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{
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Type = ParticleFloat.ValueType.Curve,
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Evaluation = ParticleFloat.EvaluationType.Life,
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CurveA = new( new List<Curve.Frame>() { new( 0, 10f ), new( 0.8f, 50f ), new( 1f, 160f * sizeMul ) } ),
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};
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effect.StartDelay = 0.025f + (1 - smokeMul) * 0.03f;
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effect.ApplyColor = true;
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effect.Gradient = new()
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{
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Type = ParticleGradient.ValueType.Range,
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Evaluation = ParticleGradient.EvaluationType.Particle,
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ConstantA = Color.White,
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ConstantB = Color.Transparent,
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};
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effect.StartVelocity = new()
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{
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Type = ParticleFloat.ValueType.Range,
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Evaluation = ParticleFloat.EvaluationType.Seed,
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ConstantA = 10,
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ConstantB = 70,
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};
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effect.Force = true;
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effect.InitialVelocity = hitForwardDirection * LongitudinalSlip * 10f;
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effect.ForceDirection = 0;
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effect.SheetSequence = true;
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effect.SequenceSpeed = 0.5f;
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effect.SequenceTime = 1f;
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}
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}
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