Sandline Tactical FPS Free and Open Source Desktop App CookApps CookApps Marketplace

Overview

Sandline Tactical FPS (sandline-threejs-fps) is an open-source, high-performance 3D browser first-person shooter built on Three.js, TypeScript, Vite, and the Rapier3D physics engine. Supporting desktop keyboard/mouse and responsive mobile touch controls, Sandline features tactical 3v3–10v10 round-based combat across multiple iconic maps (Dust2, Assault, Desert Town, Snow Arena), smart tactical bot AI, weapon recoil ballistics, a buy-zone equipment economy, and competitive Bloodstrike bounty rounds.

How It Works

Sandline Tactical FPS operates through structured, deterministic execution stages:

Three.js & Rapier3D Physics Core: Simulates weapon ballistics, raycast projectile dispersion, rigid body collisions, and player movement inertia.

Multi-Map Tactical Round Architecture: Features competitive 3v3 to 10v10 rounds across Dust2, Assault, Desert Town, and Snow Arena environments.

Tactical Bot AI & Flanking Logic: Coordinates non-player bots with pathfinding, cover-seeking behavior, coordinated grenades, and sightline checks.

Supply Economy & Weapon Arsenal: Accumulates bounties per elimination to purchase rifles, submachine guns, snipers, and tactical equipment.

Sandline Tactical FPS desert rifle first-person view with bot squad

Key Technical Features & Capabilities

Three.js & Rapier3D Physics: Simulates responsive character kinematics, weapon recoil climb, rigid body physics, and raycast projectile dispersion at native refresh rates.

Round-Based Tactical Modes: Delivers classic Dust2 bomb planting/defusal, Assault hostage rescue, and multi-round Bloodstrike bounty tournaments with persistent credit balances.

Advanced Bot Team AI: Coordinates up to 20 computer-controlled bots with pathfinding, cover-seeking tactics, flanking maneuvers, and spatial grenade throws.

Dual Desktop & Mobile Control: Features WASD/mouse controls for desktop alongside smooth virtual touch joysticks, aim zones, and fire buttons on mobile.

Architecture & Technology Stack

Primary Languages: TypeScript, GLSL Shaders, JavaScript

Game & Physics Engine: Three.js r180+, @dimforge/rapier3d-compat (Wasm Physics)

Toolchain & Bundler: Vite 6, Node.js 22+, Service Worker Caching

Supported Platforms: Desktop Browsers (Chrome, Edge, Safari, Firefox), Mobile Browsers (iOS Safari, Android Chrome)

System Requirements

Specification	Minimum Requirement	Recommended Specification
Operating System	Modern Web Browsers (WebGL 2.0 / WebAssembly)	Latest stable release build
Processor Architecture	4-Core x86_64 or Apple Silicon M1	8-Core Apple Silicon / Core i7+
Memory (RAM)	4 GB Unified Memory	16 GB+ High-Speed RAM
Disk Space	1 GB free SSD storage	5 GB+ free SSD storage

Installation & Setup Guide

Direct Browser Play (Zero Install)

Launch the game directly at https://ihca.cn/sandline/ on desktop or mobile.

Building & Running from Source

bash

git clone https://github.com/xilinnihao-afk/sandline-threejs-fps.git
cd sandline-threejs-fps
npm install
npm run test:core
npm run dev

Open http://localhost:5190 in your browser.

How to Use & Workflow

Select Game Mode & Map: Choose Bloodstrike, Classic Dust2, or Arena combat and configure bot team sizes (3v3 to 10v10).

Purchase Equipment in Buy Zone: Press B during initial buy time to spend earned bounties on rifles (AK-47, M4A1, AWP), armor, and grenades.

Execute Tactical Objectives: Advance with AI teammates, hold choke points, use cover to break enemy sightlines, and plant/defuse the bomb.

Win Round Matches: Eliminate the opposing squad or complete map objectives to secure round victories and accumulate team bonuses.

Troubleshooting & Common Issues

Issue: Pointer lock fails to capture mouse cursor.

*Cause*: Browser security requires a direct user click inside the canvas viewport before locking the cursor.

*Resolution*: Click anywhere inside the main 3D game screen to engage pointer lock; press Esc to release.

Issue: Mobile frame rate drops in 10v10 matches on older devices.

*Cause*: High bot counts increase CPU physics simulation overhead on low-power mobile chips.

*Resolution*: Select 3v3 or 5v5 team configurations for optimal 60fps performance on mobile devices.

Sandline Tactical FPS

Overview

How It Works

Key Technical Features & Capabilities

Architecture & Technology Stack

System Requirements

Installation & Setup Guide

Direct Browser Play (Zero Install)

Building & Running from Source

How to Use & Workflow

Troubleshooting & Common Issues

How to Use & Getting Started

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