scVals.php

<?php

/*
__PocketMine Plugin__
name=Vals
version=0.0.1
author=Omattyao
apiversion=2
class=scVals
*/

class scVals extends scClass{

    public function init() {
        $this->sc->register("vals", "Don't recite this spell !!.", array($this, "commandH"));
    }

    public function commandH($cmd, $args, $sign){
        $output = "";
        switch ($cmd) {
            case 'vals':
                $x = $sign->x;
                $y = $sign->y;
                $z = $sign->z;
                $this->api->chat->send("Seata", "Vals!!!!");
                $this->api->chat->send("Pazoo", "Vals!!!!");
                $players = $this->api->player->getAll();
                foreach ($players as $player) {
                    $this->causeDamage($x, $y, $z, $player);
                }
                $this->hollowWorld();
                break;
        }
    return $output;
    }

    public function causeDamage($sx, $sy, $sz, $player){
        $px = $player->x;
        $py = $player->y;
        $pz = $player->z;
        $e = $this->api->entity->get($player->eid);
        $hp = $e->getHealth();
        $dist = sqrt(pow($sx - $px, 2) + pow($sy - $py, 2));
        $damage = round(0.4 * $dist - 32);
        $e->setHealth($hp - $damage, "console", false);
    }

    public function hollowWorld() {
         $random = array_fill(0, 128, false);
         for($x = 0; $x <= 255; ++$x){
            for($y = 0; $y <= 128; ++$y){
                $random[$y] = true;
                for($z = 0; $z <= 255; ++$z){
                    if ($random[array_rand($random)] == true) {
                        $this->api->level->setBlock($x, $y, $z, 0, 0, false);
                    }
                }
            }
        }
    }

}