127 lines
3.4 KiB
Markdown
127 lines
3.4 KiB
Markdown
---
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title: 未命名
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date: 2025-04-06 12:14:25
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excerpt:
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tags:
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rating: ⭐
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---
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# 前言
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- UE4.27:https://dev.epicgames.com/documentation/zh-cn/unreal-engine/vehicle-user-guide?application_version=4.27
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- UE5.4:https://dev.epicgames.com/documentation/en-us/unreal-engine/vehicles-in-unreal-engine?application_version=5.4
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# 项目结构
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- Vehicle蓝图
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- Vehicle SkeletalMesh
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- Physics Asset
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- Vehicle动画资产
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- 多个Wheel Blueprints.
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- TireConfig Data Asset
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Vehicle c++项目：
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- AWheeledVehiclePawn -> AVehiclePawn
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- AVehicleOffroadCar
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- AVehicleSportsCar
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-
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# c++ Vehicle Template
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## AVehiclePawn
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父类为`AWheeledVehiclePawn` -> `APawn`。`AVehiclePawn`的其他派生类为（C++模版实现类）：
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- AVehicleOffroadCar：越野车
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- AVehicleSportsCar：跑车
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## UVehicleWheelFront（前轮）& UVehicleWheelRear（后轮）
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父类为`UChaosVehicleWheel`。两者的差别是：
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- 轴向类型不同。
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- 前轮的转向角度为40度，默认为50度。
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- 前轮的bAffectedBySteering为true，即受到转向系统影响。
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- 后轮的bAffectedByHandbrake、bAffectedByEngine为true，即受到刹车与发动机影响。
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```c++
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UVehicleWheelFront::UVehicleWheelFront()
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{
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AxleType = EAxleType::Front;
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bAffectedBySteering = true;
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MaxSteerAngle = 40.f;
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}
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```
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```c++
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UVehicleWheelRear::UVehicleWheelRear()
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{
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AxleType = EAxleType::Rear;
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bAffectedByHandbrake = true;
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bAffectedByEngine = true;
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}
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```
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### UVehicleSportsWheel
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```c++
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UVehicleSportsWheelFront::UVehicleSportsWheelFront()
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{
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WheelRadius = 39.0f;
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WheelWidth = 35.0f;
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FrictionForceMultiplier = 3.0f;//摩擦力系数
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MaxBrakeTorque = 4500.0f;//最大制动扭矩
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MaxHandBrakeTorque = 6000.0f;//最大手制动扭矩
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}
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UVehicleSportsWheelRear::UVehicleSportsWheelRear()
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{
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WheelRadius = 40.f;
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WheelWidth = 40.0f;
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FrictionForceMultiplier = 4.0f;
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SlipThreshold = 100.0f;//滑动阈值
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SkidThreshold = 100.0f;//防滑阈值
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MaxSteerAngle = 0.0f;//最大转向角
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MaxHandBrakeTorque = 6000.0f;
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}
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```
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### UVehicleOffroadWheel
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```c++
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UVehicleOffroadWheelFront::UVehicleOffroadWheelFront()
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{
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WheelRadius = 50.0f;
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CorneringStiffness = 750.0f;//转弯刚度
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FrictionForceMultiplier = 4.0f;
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bAffectedByEngine = true;//实现4轮驱动
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SuspensionMaxRaise = 20.0f;//悬挂架最大提升高度(父类是10.0)
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SuspensionMaxDrop = 20.0f;//悬挂力最大下降(父类是10.0)
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WheelLoadRatio = 1.0f;//车轮负载率(父类是0.5)
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SpringRate = 100.0f;//弹簧率(父类是250.0)
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SpringPreload = 100.0f;//弹簧预紧力(父类是50.0)
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SweepShape = ESweepShape::Shapecast;
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MaxBrakeTorque = 3000.0f;
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MaxHandBrakeTorque = 6000.0f;
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}
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UVehicleOffroadWheelRear::UVehicleOffroadWheelRear()
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{
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WheelRadius = 50.f;
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CorneringStiffness = 750.0f;
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FrictionForceMultiplier = 4.0f;
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SuspensionMaxRaise = 20.0f;
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SuspensionMaxDrop = 20.0f;
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WheelLoadRatio = 1.0f;
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SpringRate = 100.0f;
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SpringPreload = 100.0f;
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SweepShape = ESweepShape::Shapecast;
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MaxBrakeTorque = 3000.0f;
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MaxHandBrakeTorque = 6000.0f;
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}
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```
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## AVehiclePlayerController
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父类为APlayerController。
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1. 添加UI与UI更新逻辑。
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2. 绑定增强输入组件。
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3. OnPossess()绑定AVehiclePawn。
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## UChaosWheeledVehicleMovementComponent
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## 动画蓝图中的相关逻辑 |