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Game Mechanics & Procedural Generation

Game physics, procedural worlds and NPC AI — everything behind the scenes of video games. From dungeon generation to behaviour trees and ragdoll physics.

🎮 Simulations

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Procedural Dungeon Generator
Generate game levels three ways: BSP partitioning with rooms and corridors, random room placement with a spanning tree of L-corridors, or cellular-automata caves. Seeded for reproducibility.
Advanced
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Pathfinding Algorithms
A*, Dijkstra, BFS and DFS compared. A live demo on grids with obstacles and weight maps.
Intermediate
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Maze Generation
Recursive backtracking, Prim's, Wilson's and other algorithms. Generating and solving perfect mazes.
Intermediate
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Boids — Flocking Behaviour
Emergent NPC behaviour from three simple rules: separation, alignment and cohesion.
Beginner
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Genetic Algorithm
Evolutionary optimisation: fitness, crossover and mutation. Solving combinatorial optimisation problems.
Intermediate
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Procedural Terrain
A heightmap from Perlin noise, octaves and erosion. Generating realistic landscapes and biomes.
Intermediate
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Neural Network
Forward propagation and backpropagation. Training a game AI for simple tasks.
Advanced
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Wave Function Collapse
Constraint-based procedural level generation. Automatic tile matching without manual design.
Intermediate
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Ragdoll Physics
Body segments with joint constraints. Realistic physics of falling and character interaction.
Intermediate
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Field of View NPC
Shadow-casting visibility for stealth games. A visibility polygon built from rays and the corner points of obstacles.
Intermediate
Particle System VFX
GPU-based VFX emitter for fire, explosion and smoke. Tune spawn rate, velocity, lifetime and blend mode in real time.
Intermediate

📐 Key Concepts

Wave Function Collapse (WFC)
A procedural generation algorithm based on constraints and entropy. Each cell "collapses" into a specific tile according to the adjacency-compatibility rules of its neighbours.
Behaviour Trees (BT)
A hierarchical structure for NPC AI: Sequence, Selector and Parallel nodes. It reduces complexity compared with finite-state machines and is easy to extend.
Procedural Animation
Inverse kinematics (IK) and procedural gait — legs adapt to the terrain without keyframes. The FABRIK and CCD algorithms for IK chains.
Spatial Data Structures
Quadtree, octree and spatial hashing for efficient neighbour queries. Reducing O(n²) collision checks to O(n log n) or even O(n).
A* Algorithm
f(n) = g(n) + h(n) — path cost plus heuristic. It is guaranteed to find the shortest path with an admissible (non-overestimating) heuristic such as Manhattan or Euclidean distance.
Perlin & Simplex Noise
Coherent gradient noise for natural landscapes. Octave layering (fBm) creates detail at different scales. Simplex noise is faster in higher dimensions.

📖 Learning Resources

📄 A* Pathfinding Algorithm 📄 Perlin Noise & Procedural Textures 📄 Boids Algorithm — Flocking Simulation

🔗 Related Categories

🎮 Game development and simulation techniques are closely intertwined — most game physics is based on the same principles as scientific simulations. Path tracing in AAA games, procedural generation of endless worlds and AI behaviour trees are also used in real-world robotics programming.

Key Concepts

Topics and algorithms you'll explore in this category

Interactive ModelReal-time browser simulation with live parameter controls
WebGL / Canvas 2DHardware-accelerated rendering in the browser
Mathematical FoundationDifferential equations and numerical integration
Open SourceMIT-licensed code — inspect, fork, and learn
No Install RequiredRuns directly in Chrome, Firefox, Safari, Edge
Educational FocusBuilt to explain the underlying science clearly

Frequently Asked Questions

Common questions about this simulation category

Do these simulations require installation?
No. Every simulation runs entirely in your web browser using WebGL and Canvas 2D. Nothing to install or download — open the page and the simulation starts immediately.
Can I use these simulations for teaching?
Yes — all simulations are designed to be educational and run without an account or login. They are widely used in university lectures, high-school science classes, and self-directed learning. Embed them via iframe or link directly.
What devices do the simulations support?
All simulations work on desktop browsers (Chrome, Firefox, Edge, Safari). Many work on mobile and tablets too, though some physics-heavy simulations benefit from the GPU performance of a desktop or laptop.

About Game Development Simulations

Procedural generation, AI, physics, and rendering techniques for games

Game development simulations model the algorithms and techniques that drive modern video games. Procedural level-generation simulations build dungeons, cave systems, and terrain using cellular automata, binary-space partitioning, and wave-function collapse, showing how constrained randomness produces handcrafted-feeling environments. State-machine and behaviour-tree simulations animate non-player-character decision logic for patrol, chase, and search behaviours.

Screen-space effect demos implement SSAO (ambient occlusion), bloom, motion blur, and depth-of-field in WebGL fragment shaders, showing the visual difference each technique makes. Physics-engine integrator comparisons run the same falling-body scenario with Euler, Verlet, RK4, and symplectic Euler to show accuracy and energy drift discrepancies. These are the practical techniques used in Unreal Engine and Unity, made directly inspectable and modifiable.

Each simulation in this category is built with accuracy and interactivity in mind. The underlying mathematical models are the same ones used in academic research and professional engineering — just made accessible through a web browser. Changing parameters in real time and observing the results is one of the most effective ways to build intuition for complex scientific and engineering concepts.