CPSC 4170/6170: �Milestone 1 Presentation

�

Russell Welch

CPSC 4170

Game description

Name title: Slipstream Black

​

Genre: 3D First-Person Action-Platformer

​

A high-speed, vertical traversal-based first-person shooter focused on fluid parkour and stylish combat. Inspired by Dishonored's vertical worldbuilding and momentum-based traversal, and Ultrakill's intense movement-driven combat.

​

​

Game description

In "Slipstream Black," objectives:

• Navigate Rooftops: Use parkour and dash mechanics to cross dangerous city rooftops.
• Master Movement: Chain dashes, slides, and wall runs to maintain momentum.
• Eliminate Threats: One-shot ranged and melee combat from high-speed encounters.
• Survive the Heights: Encounters are deadly and quick. You must control the environment as much as the enemies.
• Upgrade your Gear: Eliminating enemies or completing levels rewards currency which can be used to purchase movement or weapon upgrades.

Game information

Skill rating: Intermediate to advanced

Audience: T for Teen

• High-speed stylized combat
• No gore, but intense impact and feedback

Color Pallette

Game references

Game References

• Dishonored – Environmental storytelling and parkour-based level design
• Ultrakill – Hyper-fast movement-focused combat
• Mirror's Edge – Rooftop traversal and visual clarity
• Titanfall 2 – Wall-running and flow

​

Entities – Player character

Main character

• Behavior: Movement-heavy shooter; high-speed traversal and combat
• Looks: Runner vision, stylized weaponry, no viewable character
• Input Description: Mouse + Keyboard (WASD, Space, Shift, Mouse 1/2, E)
• How we’ll manipulate: Rigidbody controller with layered movement state machine

​

Entities - Enemies

Enemy

• Behavior: Turrets, jumping robots, drones, and rooftop guards; all react fast and hit hard
• Looks: Low-poly mechanical or masked humanoid forms with glowing sensors
• Manipulation: NavMesh + aggressive AI logic; alert, chase, and precision attacks

Entities - Items

• Pulse Pistol: Primary ranged weapon, hitscan
• Shock Gauntlet: Melee burst with cooldown
• Ammo/Charge Packs: Restore combat utilities
• Looks: Glowing pick-up meshes, clean and sharp silhouettes
• Other: Shotgun, charging laser rifle, and weaponry which incentives movement

​

https://mario.fandom.com/wiki/Category:Enemies_in_Super_Mario_3D_World

Movement Mechanics

Slipstream Black's movement system is built for momentum and flow. Every mechanic is tuned to reward skillful chaining of movement and combat

• Wall Run: Stick to walls and maintain velocity to cross gaps and flank enemies.
• Slide: Drop into a slide from a sprint to keep speed or duck under obstacles.
• Double Jump: Allows in-air corrections or to chain wall runs and ledge grabs.
• Air Control: Inspired by Source engine — fine-tune your jumps mid-air.
• Dash: Quick directional burst to evade, extend movement, or gain spacing.

Game mechanics

Upgrade Station: Players can find upgrade terminals scattered across the level or between segments. Using points earned from enemy kills or level performance, they can purchase upgrades like:

• Laser Sight for better aim precision
• Tactical Flashlight to illuminate dark rooftops or reveal hidden enemies
• Dash system to quickly move in any direction on a cooldown

Checkpoint System: Levels are divided into segments with auto-save checkpoints. Dying immediately resets the player at the last checkpoint with no loading tim

Level Completion Beacon: Each level ends at a rooftop beacon that tallies time, deaths, and optional objectives. Encourages replayability and time attack runs.

​

Modules

Player Control:

• Advanced Rigidbody-based character controller with custom physics
• Source-inspired air strafing with acceleration and no speed limits
• Comprehensive state machine managing wallrunning, sliding, crouching, and dashing
• Double-jump mechanics with air momentum preservation

Weapons & Combat:

• Complete modular weapon system with inheritance-based architecture
• Scriptable Object-driven weapon stats and configuration
• Physics-based raycasting for precise hit detection
• Viewmodel animation system with procedural recoil effects

Enemy AI:

• State machine-driven enemy behavior
• Physics-based movement with jump trajectory calculations
• Line-of-sight detection with obstruction checking
• Self-damage system for realistic collision responses

Physics & Effects:

• Custom gravity system with terminal velocity and fall multipliers
• Slope detection and enhanced movement on inclines
• Camera effects including FOV kicks, recoil, and procedural tilt

Software architecture

Timeline

Modules To Prioritize:

• Movement controller
• Dash, slide, wall-run flow
• Combat feel and responsiveness

Most Difficult Module:

• Wall detection + wall-run exit chaining

First Modules:

• Rigidbody player movement
• Dash/slide combos
• Pulse pistol core functionality