[WIP] Add expanded JavaFX Racing Game implementation

[Copilot]

• Create RacingGame.java with 3000+ lines of JavaFX code implementing:
  • Main application (RacingGame extends Application), canvas 1400x900
  • Utility classes (Vec2, NearestResult)
  • Car definition system (CarDef) with 6 unique cars
  • Track definition system (TrackDef) with 3 unique tracks
  • Weather system (CLEAR, RAIN, FOG, NIGHT)
  • Particle system (sparks, smoke, confetti, boost flame, tire smoke)
  • Floating text system
  • Power-up system with 6 types
  • Scenery system (trees, tire barriers, cones, grandstands)
  • Track class with waypoints, rendering, minimap
  • Player car with full physics, drift, boost, lap counting
  • AI cars with pathfinding and rubber-banding
  • Game statistics and settings systems
  • Championship mode
  • Countdown system
  • Complete menu system (main menu, car select, track select, settings, stats)
  • Full HUD during racing
  • Race finish screen
  • Championship results screen
  • Collision system
  • Game state machine

Original prompt

Create a massively expanded 3000+ line JavaFX Racing Game. The file should be called RacingGame.java and placed at the root of the repository. Build on the existing racing game concept but expand it significantly with all the features below. The entire game must be in a single RacingGame.java file for easy compilation. Target well over 3000 lines of clean, well-commented Java code.

FULL FEATURE LIST TO IMPLEMENT:

1. Main Application (RacingGame extends Application)

• Canvas 1400x900, AnimationTimer game loop
• Key pressed/released tracking with new-key-this-frame detection
• Window focus handling to clear stuck keys

2. Utility Classes

• Vec2 class with add, sub, mul, len, dist, norm, dot, perp, fromAngle
• NearestResult helper

3. Car Definition System (CarDef)

• 6 unique selectable cars with different stats:
  • Thunderbolt (balanced), Phantom (top speed), Viper (drift/handling), Blizzard (heavy/grip), Inferno (boost specialist), Shadow (stealth drift)
  • Each has: name, bodyColor, accentColor, maxSpeed, accel, handling, boostPower, weight, driftFactor, description

4. Track Definition System (TrackDef)

• 3 unique tracks with different layouts:
  • Speedway Oval (classic oval, high speeds)
  • Serpentine Circuit (S-curves with sin/cos modulation)
  • Grand Prix Complex (technical with sharp hairpins, complex sin modulation)
• Each has: name, description, grassColor, tarmacColor, curbColor, trackWidth

5. Weather System

• 4 weather types: CLEAR, RAIN, FOG, NIGHT
• Rain: 200 animated rain drops, 15 puddles, reduced grip (0.65x), blue overlay
• Fog: 0.55 alpha fog overlay, slightly reduced grip (0.85x)
• Night: 0.75 alpha dark overlay, headlight cone rendering for player car
• Each weather affects grip multiplier and visibility

6. Full Particle System

• Particle class with position, velocity, life, size, color, alpha fade
• ParticleSystem manager with methods:
  • spawnSparks (collisions, yellow/orange)
  • spawnSmoke (gray clouds)
  • spawnConfetti (multi-color celebration)
  • spawnBoostFlame (behind car when boosting)
  • spawnTireSmoke (during drifts)

7. Floating Text System

• FloatingText class that rises and fades
• Used for power-up collection feedback, collision "CRASH!" text, drift combos

8. Power-Up System

• 6 power-up types: SPEED_BOOST, REPAIR, FUEL, SHIELD, OIL_SLICK, NITRO
• Each has color, icon emoji, label, collection effect
• 12 power-ups placed along track with offset from center line
• Bob animation, glow effect rendering
• Respawn timer after collection (600 frames)
• Effects: speed burst, health restore +35, fuel +40, shield 300 frames, spin-out 40 frames, fuel +60

9. Scenery System

• SceneryObject class with types: tree, tire_barrier, cone, grandstand
• 80 scenery objects placed along track edges
• Trees with trunk and layered canopy
• Tire barriers as circles
• Traffic cones with white stripe
• Grandstands with colored people dots

10. Track Class

• Waypoint-based tracks generated with parametric equations
• Track rendering: grass background with pattern, curb layer, tarmac layer, center dashed line
• Checkered finish line with alternating black/white squares
• Nearest waypoint search, on-track detection, turn sharpness calculation
• Minimap rendering with all car positions
• Power-up and scenery management

11. Player Car (PlayerCar)

• Full physics: acceleration, braking, reverse, steering with speed factor
• Drift mechanics with drift angle, grip tracking
• Boost system using fuel (SHIFT key)
• Weather grip integration
• Health, fuel, grip stats
• Shield system with timer and visual bubble effect
• Spin-out mechanic from oil slicks (rotation + speed reduction for 40 frames)
• RPM calculation for HUD
• Skid mark system (500 max, fade over time)
• Power-up collection with proximity detection
• Lap counting via finish line crossing detection (signed side method)
• Screen shake on collisions
• Visual rendering: shadow, body with car color, racing stripe, windshield, headlights, tail lights, 4 wheels, boost flame, shield bubble, drift smoke
• Headlight cones in night mode

12. AI Cars (AICar)

• Waypoint following with lookahead (15 waypoints ahead)
• Variable skill levels (0.7, 0.9, 1.1 base + difficulty modifier)
• Rubber-banding: speed up when behind player, slow when ahead
• Corner speed reduction based on turn sharpness
• Oil slick avoidance
• Lap detection
• Name tags rendered above cars
• 3 AI opponents: Blaze (red), Turbo (orange), Frost (blue)
• Visual rendering with shadow, body, stripe, windshield, wheels

13. Game Statistics (GameStats)

• Persistent across races: totalRaces, totalWins, bestLapEver, totalDriftDistance, totalCollisions, totalPowerUps, championshipsWon
• Win rate calculation

14. Settings System (GameSettings)

• Difficulty: Easy/Normal/Hard (affects AI skill)
• Weather selection
• Laps per race (1-10)
• Toggle minimap
• Toggle particles

15. Championship Mode

• 3-race series across all trac...

This pull request was created from Copilot chat.

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