fast-astar

Left mouse button to set the end point, right button (add/delete) obstacle.

About

fast-astar is an implementation of a* algorithm using javascript. Small and fast.

Use

Install fast-astar using npm or introduce Grid.js and Astar.js on the page

Install: 
			
# install
npm install fast-astar --save
Code: 
			
import {Grid,Astar} from "fast-astar";

// Create a grid
let grid = new Grid({
		col:11,                  // col
		row:7,                   // row
		render:function(){       // Optional, this method is triggered when the grid point changes
			// console.log(this);
		}
	});

// Add obstacles to the grid
[[5,2],[5,3],[5,4]].forEach(item => {
	grid.set(item,'value',1);    // Values greater than 0 are obstacles
});

// Pass the grid as a parameter to the Astar object
let astar = new Astar(grid),
	path = astar.search(
		[2,3],                   // start
		[8,3],                   // end
		{                        // option
			rightAngle:false,    // default:false,Allow diagonal
			optimalResult:true   // default:true,In a few cases, the speed is slightly slower
		}
	);

console.log('Result',path);      // [[2,3],[3,2],[4,1],[5,1],[6,1],[7,2],[8,3]]

Related

License

MIT