# simtr/the-powder-toy **Attribution required: if you use, quote, or summarise this content, you must credit and link back to [awesome-repositories.com](https://awesome-repositories.com/repository/simtr-the-powder-toy).** _How this analysis was created: the description and tags below were written by an AI model that read this project's README and public documentation pages; stars, license and language come straight from the GitHub API. The model does not read the source code._ 5,149 stars · 857 forks · C++ · GPL-3.0 ## Links - GitHub: https://github.com/simtr/The-Powder-Toy - Homepage: http://powdertoy.co.uk - awesome-repositories: https://awesome-repositories.com/repository/simtr-the-powder-toy.md ## Description The Powder Toy is a C++ physics engine and material simulation software that operates as a falling sand physics sandbox. It provides a simulation environment where solids, liquids, and gases interact based on heat, pressure, and velocity. The project is a scriptable sandbox environment, offering an external scripting interface and behavioral scripting to modify game mechanics, automate tasks, and define custom simulation logic. The software supports the construction of complex machinery, physical structures, and functional logic circuits through simulated electronic components and sensors. It includes a community content sharing system for uploading and downloading simulation save files from a remote repository. ## Tags ### Scientific & Mathematical Computing - [Physics Sandbox Simulators](https://awesome-repositories.com/f/scientific-mathematical-computing/physics-sandbox-simulators.md) — Provides an interactive environment for experimenting with real-time interactions of solids, liquids, and gases. - [Fluid Dynamics Simulation](https://awesome-repositories.com/f/scientific-mathematical-computing/applied-domain-sciences/fluid-dynamics-analysis/fluid-dynamics-simulation.md) — Implements computational modeling of liquid and gas behavior using an Eulerian grid approach. - [Electronic Circuit Simulations](https://awesome-repositories.com/f/scientific-mathematical-computing/high-performance-execution-environments/scientific-computing-platforms/electronic-circuit-simulations.md) — Provides simulation of electronic components and signal behavior for building functional logic circuits. - [Material Phase Simulators](https://awesome-repositories.com/f/scientific-mathematical-computing/material-phase-simulators.md) — Provides a tool for building complex machinery using a variety of simulated chemical and physical elements. - [Scriptable Simulation Environments](https://awesome-repositories.com/f/scientific-mathematical-computing/scriptable-simulation-environments.md) — Offers a programmable interface for automating behaviors and adding custom logic to the simulation sandbox. ### Development Tools & Productivity - [Simulation Extensions](https://awesome-repositories.com/f/development-tools-productivity/extensible-configuration-interfaces/behavioral-extension-scripts/simulation-extensions.md) — Implements a mechanism for extending simulation behavior and creating custom interactions via behavioral scripting. ([source](https://powdertoy.co.uk/Discussions/Categories/Index.html)) ### Game Development - [Cellular Automata](https://awesome-repositories.com/f/game-development/evolution-simulation-games/cellular-automata.md) — Uses grid-based cellular automata to simulate physical interactions between neighboring pixels. - [Game Logic Scripting](https://awesome-repositories.com/f/game-development/game-logic-scripting.md) — Includes an integrated interface for defining custom interactive behaviors and simulation logic through scripting languages. ([source](https://powdertoy.co.uk/Wiki/W/Main_Page.html)) - [In-Game Logic Circuits](https://awesome-repositories.com/f/game-development/in-game-logic-circuits.md) — Implements virtual logic circuits as a core mechanic for creating automated mechanisms. ([source](https://powdertoy.co.uk/Wiki/W/Main_Page.html)) - [Animated Machinery](https://awesome-repositories.com/f/game-development/physics-engines/mechanical-constraints/animated-machinery.md) — Supports the construction of functional mechanical systems with moving parts utilizing simulated materials. ([source](https://powdertoy.co.uk/Download.html)) - [Physics Simulation Engines](https://awesome-repositories.com/f/game-development/physics-simulation-engines.md) — Implements a high-performance C++ engine to calculate physical interactions and dynamics. - [Sandbox Construction Toolkits](https://awesome-repositories.com/f/game-development/sandbox-construction-toolkits.md) — Provides a toolkit for combining materials and electronic components to build working machines and circuits. ([source](https://cdn.jsdelivr.net/gh/simtr/the-powder-toy@main/README.md)) - [Game Modification Frameworks](https://awesome-repositories.com/f/game-development/game-modification-frameworks.md) — Provides a framework for integrating community-created modifications that alter the core operational behavior of the sandbox. ([source](https://powdertoy.co.uk/Discussions/Categories/Index.html)) - [Gameplay Automation](https://awesome-repositories.com/f/game-development/gameplay-automation.md) — Offers an external interface for writing scripts to automate repetitive in-game tasks and extensions. ([source](https://cdn.jsdelivr.net/gh/simtr/the-powder-toy@main/README.md)) ### Graphics & Multimedia - [Material Property Managers](https://awesome-repositories.com/f/graphics-multimedia/graphics-engines-rendering/rendering/systems/3d-graphics-pipelines/material-systems/material-property-managers.md) — Manages a lookup table of physical material properties like heat, pressure, and density. - [Material Behavior Modeling](https://awesome-repositories.com/f/graphics-multimedia/particle-physics-simulations/gpu-accelerated-physics-simulations/interactive-physics-engines/material-behavior-modeling.md) — Simulates the interaction of solids, liquids, and gases to allow for the construction of complex mechanical devices. ### Content Management & Publishing - [Community Simulation Sharing Platforms](https://awesome-repositories.com/f/content-management-publishing/community-simulation-sharing-platforms.md) — Provides a platform for users to discover, share, and exchange user-generated simulation scenarios. ([source](https://powdertoy.co.uk/Download.html)) - [Simulation Save Galleries](https://awesome-repositories.com/f/content-management-publishing/remote-gallery-browsers/simulation-save-galleries.md) — Ships a gallery system for uploading original creations and downloading simulation files from a remote repository. ([source](https://cdn.jsdelivr.net/gh/simtr/the-powder-toy@main/README.md)) ### Networking & Communication - [State Serialization](https://awesome-repositories.com/f/networking-communication/json-serialization/state-serialization.md) — Captures the entire simulation state into a portable format for saving and restoration. ### Programming Languages & Runtimes - [External Script Execution](https://awesome-repositories.com/f/programming-languages-runtimes/external-script-execution.md) — Provides an API for executing external scripts to extend simulation behavior without recompilation. ### Software Engineering & Architecture - [State Persistence](https://awesome-repositories.com/f/software-engineering-architecture/workflow-persistence/state-persistence.md) — Implements serialization and checkpointing of the simulation environment state to files. ([source](https://powdertoy.co.uk/Wiki/W/Main_Page.html)) ### Part of an Awesome List - [Sandbox and Voxel](https://awesome-repositories.com/f/awesome-lists/more/sandbox-and-voxel.md) — Falling-sand physics sandbox game.