46 lines
1.5 KiB
C#
46 lines
1.5 KiB
C#
using Sandbox;
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using System;
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using VeloX.Utils;
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namespace VeloX;
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public partial class VeloXCar
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{
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public static float ExpDecay( float a, float b, float decay, float dt ) => b + (a - b) * MathF.Exp( -decay * dt );
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[Property, Feature( "Steer" )] public float MaxSteerAngle { get; set; } = 40f;
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[ConVar( "steer_return_speed" )]
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[Property] public static float SteerReturnSpeed { get; set; } = 6f;
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[ConVar( "steer_speed" )]
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public static float SteerInputResponse { get; set; } = 3f;
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[ConVar( "assist_mult" )]
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public static float MaxSteerAngleMultiplier { get; set; } = 1f;
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public int CarDirection { get { return ForwardSpeed < 1 ? 0 : (VelocityAngle < 90 && VelocityAngle > -90 ? 1 : -1); } }
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public float VelocityAngle { get; private set; }
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private float currentSteerAngle;
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private void UpdateSteering( float dt )
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{
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float targetSteerAngle = SteeringAngle * MaxSteerAngle;
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if ( !Input.Down( "Jump" ) )
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targetSteerAngle *= Math.Clamp( 1 - Math.Clamp( TotalSpeed / 3000, 0f, 0.85f ), -1, 1 );
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VelocityAngle = -Body.Velocity.SignedAngle( WorldRotation.Forward, WorldRotation.Up );
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float targetAngle = 0;
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if ( TotalSpeed > 150 && CarDirection > 0 && IsOnGround )
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targetAngle = VelocityAngle * MaxSteerAngleMultiplier;
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float lerpSpeed = Math.Abs( SteeringAngle ) < 0.1f ? SteerReturnSpeed : SteerInputResponse;
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currentSteerAngle = ExpDecay( currentSteerAngle, targetSteerAngle, lerpSpeed, Time.Delta );
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SteerAngle = new( 0, Math.Clamp( currentSteerAngle + targetAngle, -MaxSteerAngle, MaxSteerAngle ), 0 );
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}
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}
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