Initial commit: Complete project foundation with all documentation, scripts, and project structure
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Dubai Metaverse Team
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docs/VEHICLE_SYSTEM.md
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docs/VEHICLE_SYSTEM.md
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# Vehicle System - Dubai Metaverse
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## Overview
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This document describes the vehicle system implementation using Chaos Physics for the Dubai Metaverse project.
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## Chaos Vehicle System
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### Overview
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Chaos Vehicle is Unreal Engine 5's physics-based vehicle simulation system. It provides realistic vehicle physics and handling.
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### Setup
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1. **Enable Chaos Physics**:
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- Project Settings > Physics > Chaos Physics
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- Enable Chaos Vehicle
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2. **Vehicle Blueprint**:
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- Create vehicle blueprint
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- Add Chaos Vehicle components
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- Configure physics settings
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---
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## Vehicle Assets
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### Dubai Supercars
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#### Lamborghini
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- **Model**: SM_Vehicle_Lamborghini
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- **Blueprint**: BP_Vehicle_Lamborghini
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- **Type**: Supercar
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- **Characteristics**:
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- High speed
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- High acceleration
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- Sporty handling
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#### G-Wagon
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- **Model**: SM_Vehicle_GWagon
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- **Blueprint**: BP_Vehicle_GWagon
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- **Type**: Luxury SUV
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- **Characteristics**:
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- High ground clearance
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- Stable handling
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- Luxury aesthetic
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#### Ferrari
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- **Model**: SM_Vehicle_Ferrari
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- **Blueprint**: BP_Vehicle_Ferrari
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- **Type**: Supercar
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- **Characteristics**:
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- High speed
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- High acceleration
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- Sporty handling
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---
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## Vehicle Blueprint Setup
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### BP_VehicleBase
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**Base class for all vehicles**
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### Components
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1. **Chaos Vehicle Movement Component**:
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- Main vehicle physics component
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- Handles acceleration, braking, steering
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- Configures vehicle dynamics
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2. **Mesh Component**:
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- Vehicle static mesh
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- Visual representation
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3. **Camera Component** (optional):
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- Third-person camera
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- First-person camera (if needed)
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4. **Audio Component**:
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- Engine sounds
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- Tire sounds
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- Other vehicle sounds
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### Physics Settings
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#### Engine
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- **Max RPM**: 6000-8000
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- **Torque**: High for supercars
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- **Gear Ratios**: Configure for vehicle type
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#### Transmission
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- **Type**: Automatic or Manual
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- **Gear Count**: 6-8 gears
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- **Shift Points**: Configure shift points
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#### Suspension
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- **Spring Rate**: Adjust for vehicle type
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- **Damping**: Adjust for handling
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- **Travel**: Suspension travel distance
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#### Tires
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- **Friction**: Tire friction coefficient
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- **Pressure**: Tire pressure
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- **Radius**: Tire radius
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---
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## Vehicle Controller
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### BP_VehicleController
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**Purpose**: Handle player input and vehicle control
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### Input Mapping
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- **Throttle**: W key / Gamepad trigger
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- **Brake**: S key / Gamepad trigger
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- **Steering**: A/D keys / Gamepad stick
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- **Handbrake**: Space key / Gamepad button
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### Implementation
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1. **Input Handling**:
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- Capture player input
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- Convert to vehicle commands
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- Send to vehicle movement component
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2. **Camera Control**:
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- Third-person camera follow
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- Camera smoothing
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- Camera offset
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3. **UI**:
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- Speedometer (optional)
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- Gear indicator (optional)
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---
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## AI Traffic System
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### PCG_Traffic Graph
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**Purpose**: Generate AI traffic on roads
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### Implementation
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1. **Spline System**:
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- Create road splines
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- Define traffic paths
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- Set traffic direction
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2. **Vehicle Spawning**:
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- Spawn vehicles at intersections
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- Spawn vehicles at entry points
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- Vary vehicle types
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3. **AI Movement**:
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- Follow spline paths
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- Maintain speed
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- Avoid collisions
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### AI Vehicle Controller
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1. **Spline Following**:
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- Follow road splines
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- Maintain lane position
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- Adjust speed
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2. **Traffic Behavior**:
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- Stop at intersections (optional)
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- Yield to other vehicles
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- Maintain safe distance
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---
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## Vehicle Materials
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### Paint Materials
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- **M_Vehicle_Paint**: Base paint material
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- **Variations**: Different colors per vehicle
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- **Properties**:
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- High reflectivity
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- Low roughness
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- Metallic (for some colors)
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### Material Instances
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- **MI_Vehicle_Lamborghini_Yellow**: Yellow paint
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- **MI_Vehicle_Lamborghini_Orange**: Orange paint
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- **MI_Vehicle_GWagon_Black**: Black paint
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- **MI_Vehicle_Ferrari_Red**: Red paint
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---
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## Vehicle Audio
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### Engine Sounds
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- **A_Vehicle_Engine_Lamborghini**: Lamborghini engine
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- **A_Vehicle_Engine_GWagon**: G-Wagon engine
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- **A_Vehicle_Engine_Ferrari**: Ferrari engine
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### Implementation
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1. **Audio Component**:
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- Attach to vehicle
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- Play engine sound
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- Adjust pitch based on RPM
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2. **Tire Sounds**:
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- Tire screech on hard braking
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- Tire squeal on sharp turns
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---
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## Performance Optimization
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### Vehicle Optimization
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1. **LODs**: Use LODs for distant vehicles
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2. **Culling**: Cull vehicles outside view
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3. **Instancing**: Use instanced meshes for traffic
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### Physics Optimization
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1. **Update Frequency**: Optimize physics update rate
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2. **Collision**: Optimize collision shapes
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3. **Simulation**: Limit physics simulation distance
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---
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## Testing
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### Vehicle Testing
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1. **Handling**: Test vehicle handling
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2. **Physics**: Verify physics are realistic
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3. **Performance**: Test performance with vehicles
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4. **Audio**: Test vehicle audio
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### Traffic Testing
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1. **Spawn Rate**: Test vehicle spawn rate
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2. **AI Behavior**: Test AI traffic behavior
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3. **Performance**: Test performance with traffic
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4. **Collisions**: Test collision avoidance
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---
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## Troubleshooting
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### Common Issues
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**Issue**: Vehicle handling too sensitive/loose
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- **Solution**: Adjust suspension settings
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- **Solution**: Adjust tire friction
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**Issue**: Vehicle not accelerating
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- **Solution**: Check engine torque settings
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- **Solution**: Check transmission settings
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**Issue**: AI traffic not moving
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- **Solution**: Check AI controller setup
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- **Solution**: Verify spline paths
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**Issue**: Performance issues
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- **Solution**: Reduce vehicle count
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- **Solution**: Optimize vehicle meshes
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- **Solution**: Use LODs
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---
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## Documentation
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### Vehicle Specifications
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Document each vehicle:
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- Model name
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- Blueprint name
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- Physics settings
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- Material settings
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- Audio settings
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### Controls
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Document vehicle controls:
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- Input mapping
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- Camera controls
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- Special features
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---
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**Version**: 1.0
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**Last Updated**: [Current Date]
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