Abuse 2560 FPS - Enhanced Edition

Enhanced fork of Abuse 2025 featuring advanced movement mechanics and AI-enhanced visuals while preserving the classic Abuse experience.

🎮 What's New in This Fork

⭐ Advanced Wall Jump System

Transform your platforming experience with fluid wall mechanics:

• Vertical Wall Climb: Press W+Space near a wall for 2x jump height
• Horizontal Wall Kick: Press toward-wall + Space to launch away with 2x speed
• Smart Wall Detection: Uses original collision system for perfect integration
• Configurable Timing: Adjust grace periods and hang mechanics via config
• Visual Debug Mode: Toggle with Alt+N to see wall detection in action

# Enable in config.txt
wall_jump_enabled=1              # Enable wall jump mechanics
wall_coyote_frames=60            # Grace window after leaving wall (frames)
wall_hang_hold_frames=12         # Frames to hold before wall latch
wall_debug_overlay=0             # Show debug overlay (Alt+N toggles)

Implementation: Non-destructive integration at src/objects.cpp:1517 using original physics

🎨 AI-Enhanced 60 FPS Sprite Interpolation

Experience buttery-smooth animations powered by neural networks:

• Full 60 FPS Experience:

  • Physics Engine: 60 FPS (smooth, responsive gameplay)
  • Visual Rendering: 60 FPS (fluid display)
  • Sprite Animations: Original 15 FPS sprite art interpolated to 60 FPS using AI

• RIFE Neural Networks: Real-Time Intermediate Flow Estimation generates intermediate animation frames

• Intelligent Frame Mapping: Automatically maps original frames to 4x interpolated sequences

• Non-Destructive Design: Runs in parallel with original sprite system, automatic fallback if data unavailable

• Optional Feature: Toggle on/off via config without affecting gameplay

• Current Collections: aliens, bigexp (large explosions), droid enemies, fire effects

# Enable in config.txt
interpolated_sprites_enabled=1   # AI-enhanced 60 FPS sprites (optional)

Technical Details:

• Manager: InterpSpriteManager class (src/interpolation/interp_sprite.cpp)
• Data Location: AIWork/frame-interpolation/final/
• Rendering: Integrated into main render loop with zero overhead when disabled
• Fallback: Automatically uses original sprites if interpolated data unavailable

✨ Modern Enhancements

• Dedicated Jump Key: Space for jumping (in addition to W) - no more accidental jumps!
• 60 FPS Frame Pacing:
  • Smooth frame rate limiting system (fps_limit=60 or custom)
  • Both physics and rendering run at 60 FPS (configurable via physics_update)
  • Prevents screen tearing with buttery-smooth gameplay
• Enhanced Visual Effects:
  • Dynamic light/glow overlay for particles and explosions
  • Toggle via lights_overlay_enabled=1 in config
  • Adds atmospheric depth without affecting performance
• Config Diagnostics: Enhanced debug output for troubleshooting settings loading
• Modern Defaults: WASD + Space control layout out-of-the-box
• Auto-Config Launcher: abuse25.exe creates optimized config_2025.txt automatically

🔧 Technical Summary

Frame Rate Architecture:

• Physics simulation: 60 FPS (16.67ms timestep, configurable via physics_update)
• Visual rendering: 60 FPS (smooth display)
• Sprite animations: Original 15 FPS sprite art → AI-interpolated to 60 FPS
• Frame pacing: Configurable limit (default 60 FPS, 0=uncapped via fps_limit)

Key Implementation Details:

• Wall jump system: src/objects.cpp:1517 (non-destructive integration)
• Sprite interpolation: InterpSpriteManager class with intelligent frame mapping
• Configuration: Enhanced Settings class with comprehensive diagnostics
• All features toggle-able via config.txt or config_2025.txt

Compatibility:

• Fully compatible with original Abuse gameplay mechanics
• Non-destructive design: all enhancements can be disabled
• Maintains GPL 2+ license compatibility with upstream

📦 Quick Start

Recommended: Download the latest release and run abuse25.exe

Build from source:

mkdir msvc-build && cd msvc-build
cmake .. -G "Visual Studio 17 2022" -A x64
cmake --build . --config Release
cmake --install . --config Release

Full build instructions: Development

🙏 Credits & Acknowledgments

This Fork (2025)

• Wall Jump System: Advanced movement mechanics implementation
• AI Sprite Interpolation: Neural network-based frame interpolation
• Modern Configuration: Enhanced diagnostics and QoL improvements
• 🤖 Developed with assistance from Claude (Anthropic) (For AI-Enhanced 60 FPS Sprite Interpolation system)

Upstream: Abuse 2025

• Andrej Pancik (2024-2025): Modern port with multiplayer, gamepad support, high-res graphics
• Project: https://github.com/apancik/Abuse_2025

Previous Port Maintainers

• Anthony Kruize (2001): Original SDL port
• Sam Hocevar (2005-2011): SDL port maintenance
• Xenoveritas (2014): SDL2 port
• Antonio Radojkovic (2016): Abuse 1996 project

Original Abuse (1995)

• Crack dot Com: Jonathan Clark, Dave Taylor, and team
• Music & Sound: Bobby Prince
• The legendary 2D platform shooter that started it all

Full credits in AUTHORS file

📜 License

All modifications released under GNU GPL 2+ to maintain compatibility with:

• Original Abuse source (Public Domain, 1995)
• SDL ports (GPL 2+, 2001-2025)
• Upstream Abuse 2025 project

See COPYING for complete license information.

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📖 About Abuse

Celebrating its 30th anniversary, Abuse by Crack dot Com remains a timeless classic. Falsely imprisoned in an underground facility, Nick Vrenna becomes humanity's last hope when a genetic experiment called "Abuse" transforms guards and inmates alike into murderous mutants.

Experience revolutionary gameplay combining precision mouse aiming with fluid keyboard movement in this intense side-scrolling action platformer. Multiplayer is fully supported on all platforms with automatic LAN discovery via UDP broadcast.