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74 changes: 74 additions & 0 deletions
74
source/OpenBVE/Simulation/TrainManager/Motor/AccelerationCurve.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| using System; | ||
|
|
||
| namespace OpenBve | ||
| { | ||
| /// <summary>The TrainManager is the root class containing functions to load and manage trains within the simulation world.</summary> | ||
| public static partial class TrainManager | ||
| { | ||
| /// <summary>An abstract acceleration curve</summary> | ||
| internal abstract class AccelerationCurve | ||
| { | ||
| /// <summary>Gets the acceleration output for this curve</summary> | ||
| /// <param name="Speed">The current speed</param> | ||
| /// <param name="Loading">A double between 0 (Unloaded) and 1.0 (Loaded) representing the load factor</param> | ||
| /// <returns>The acceleration output</returns> | ||
| internal abstract double GetAccelerationOutput(double Speed, double Loading); | ||
| } | ||
|
|
||
| /// <summary>Represents a BVE2 / BVE4 format Acceleration Curve</summary> | ||
| internal class BveAccelerationCurve : AccelerationCurve | ||
| { | ||
| internal double StageZeroAcceleration; | ||
| internal double StageOneSpeed; | ||
| internal double StageOneAcceleration; | ||
| internal double StageTwoSpeed; | ||
| internal double StageTwoExponent; | ||
| internal double Multiplier; | ||
|
|
||
| internal override double GetAccelerationOutput(double Speed, double Loading) | ||
| { | ||
| if (Speed <= 0.0) | ||
| { | ||
| return Multiplier * this.StageZeroAcceleration; | ||
| } | ||
| if (Speed < this.StageOneSpeed) | ||
| { | ||
| double t = Speed / this.StageOneSpeed; | ||
| return Multiplier * (this.StageZeroAcceleration * (1.0 - t) + this.StageOneAcceleration * t); | ||
| } | ||
| if (Speed < this.StageTwoSpeed) | ||
| { | ||
| return Multiplier * this.StageOneSpeed * this.StageOneAcceleration / Speed; | ||
| } | ||
| return Multiplier * this.StageOneSpeed * this.StageOneAcceleration * Math.Pow(this.StageTwoSpeed, this.StageTwoExponent - 1.0) * Math.Pow(Speed, -this.StageTwoExponent); | ||
| } | ||
|
|
||
| internal BveAccelerationCurve Clone(double multiplier) | ||
| { | ||
| return new BveAccelerationCurve | ||
| { | ||
| StageZeroAcceleration = this.StageZeroAcceleration, | ||
| StageOneSpeed = this.StageOneSpeed, | ||
| StageOneAcceleration = this.StageOneAcceleration, | ||
| StageTwoSpeed = this.StageTwoSpeed, | ||
| StageTwoExponent = this.StageTwoExponent, | ||
| Multiplier = multiplier | ||
| }; | ||
| } | ||
| } | ||
|
|
||
| internal class BveDecelerationCurve : AccelerationCurve | ||
| { | ||
| private double MaxDecelerationOutput; | ||
| internal override double GetAccelerationOutput(double Speed, double Loading) | ||
| { | ||
| return this.MaxDecelerationOutput; | ||
| } | ||
|
|
||
| internal BveDecelerationCurve(double Deceleration) | ||
| { | ||
| this.MaxDecelerationOutput = Deceleration; | ||
| } | ||
| } | ||
| } | ||
| } |
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