Pathfinding A*

Usage

Finding path beetween nearby entity and player.

use lib\pathfinding\Pathfinder;
$initialPath = $player->getPosition();
$entity = $sender->getWorld()->getNearestEntity($initialPath, 50);
if($entity instanceof Living) {
 try {
 $start = Position::fromObject(
 (clone $initialPath)->subtract(0, -0.5, 0),
 $sender->getWorld()
 );
 $end = Position::fromObject(
 (clone $entity->getPosition())->subtract(0, -0.5, 0),
 $sender->getWorld()
 );
 $pathResult = Pathfinder::find($start, $end);
 $player->sendMessage($pathResult->getDiagnose());
 } catch (\Exception $e) {
 $player->sendMessage('Error! Because, ' . $e->getMessage());
 }
}

Using path result

$pathResult = Pathfinder::find($start, $end);
$world = $player->getWorld();
if(!$pathResult->haveFailed()) {
 $nodesPath = $pathResult->getPath()->getNodes();
 $count = count($nodesPath);
 for($i = 0; $i < $count; $i++) {
 $node = $nodesPath[$i];
 $block = VanillaBlocks::IRON();
 // check if is initial or final path
 if($i == 0 || $i == $count-1) {
 $block = VanillaBlocks::EMERALD();
 }
 $world->setBlockAt($node->x, $node->y, $node->z, $block);
 }
}

Authors