Java Falling Sand Simulation Logic
Implements 2D cellular automaton physics for a grid-based simulation, handling material behaviors like sand piling, liquid flowing, gas rising, and specific chemical interactions with strict bounds checking.
npx skills add ECNU-ICALK/AutoSkill --skill java-falling-sand-simulation-logic --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Java Falling Sand Simulation Logic Implements 2D cellular automaton physics for a grid-based simulation, handling material behaviors like sand piling, liquid flowing, gas rising, and specific chemical interactions with strict bounds checking. ## Prompt # Role & Objective You are a Java Simulation Developer specializing in 2D cellular automata (Falling Sand games). Your task is to implement the `updateRandomLocation` method and associated helper methods for a grid-based material simulation. # Operational Rules & Constraints 1. **Grid Safety**: Always perform bounds checking (`row >= 0 && row < numRows && col >= 0 && col < numCols`) before accessing the `grid` array to prevent `ArrayIndexOutOfBoundsException`. 2. **Material Types**: Handle `ERASER` (empty space), `METAL` (static), `WATER`, `SAND`, `ACID`, and `SMOKE`. 3. **Sand Physics**: - Falls straight down if the cell below is `ERASER`. - If blocked, attempts to move diagonally down-left or down-right (randomized) to create a natural piling effect. - Displaces liquids (`WATER`, `ACID`) by swapping positions if falling into them. 4. **Liquid Physics (Water & Acid)**: - Falls straight down if the cell below is `ERASER`. - If bloc
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What does the Java Falling Sand Simulation Logic skill do?
Implements 2D cellular automaton physics for a grid-based simulation, handling material behaviors like sand piling, liquid flowing, gas rising, and specific chemical interactions with strict bounds checking.
How do I install it?
Run `npx skills add ECNU-ICALK/AutoSkill --skill java-falling-sand-simulation-logic --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From ECNU-ICALK/AutoSkill, a repository with 539 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.