fxgl-ai-pathfinding

name	fxgl-ai-pathfinding
description	Implement AI movement and pathfinding in FXGL — set up an AStarGrid, find paths using AStarPathfinder, attach AStarMoveComponent or RandomAStarMoveComponent to entities, implement GOAP (Goal-Oriented Action Planning) with world state and action preconditions, add SenseAI for vision and hearing, set up waypoint patrol routes, generate dungeons and mazes procedurally. Use this skill when making enemies chase the player, implementing patrol behaviours, building GOAP NPC AI, adding pathfinding to a tile-based game, or generating procedural levels.
triggers	["A*","pathfinding","AStarGrid","AStarMoveComponent","GOAP","enemy AI","patrol","chase","SenseAI","dungeon generation","maze","waypoint","enemy movement"]
compatibility	Java 17+, FXGL 21.x
category	fxgl/ai
tags	["fxgl","java","javafx","ai","pathfinding"]
metadata	{"author":"fxgl-skills","version":"1.0","fxgl-version":"21.1"}
allowed-tools	["Read","Write","Edit","Bash"]

FXGL AI — Pathfinding, GOAP & Sense AI

A* Pathfinding Setup

Build the grid from the world

// Create grid after level is loaded (in initGame, after setLevelFromMap)
private AStarGrid grid;

@Override
protected void initGame() {
    setLevelFromMap("level1.tmx");

    // Build grid: tile size must match Tiled tile width/height
    grid = AStarGrid.fromWorld(getGameWorld(), 32, 32);
    // Cells corresponding to WALL-type entities are automatically NOT_WALKABLE
    // Mark additional non-walkable cells:
    getGameWorld().getEntitiesByType(EntityType.OBSTACLE).forEach(e -> {
        int cx = (int)(e.getX() / 32);
        int cy = (int)(e.getY() / 32);
        grid.getCell(cx, cy).setState(CellState.NOT_WALKABLE);
    });
}

Find a path manually

// Returns null if no path exists
List<AStarCell> path = grid.getAStarSearch().findPath(
        (int)(startX / 32),   // cell X of start
        (int)(startY / 32),   // cell Y of start
        (int)(goalX  / 32),   // cell X of goal
        (int)(goalY  / 32)    // cell Y of goal
);

if (path != null) {
    path.forEach(cell -> {
        double worldX = cell.getX() * ;
           cell.getY() * ;
        System.out.println( + worldX +  + worldY);
    });
}