<?php

namespace Tests;

use App\Game\Campaign;
use App\Game\Mobj;
use App\Game\World;
use PHPUnit\Framework\TestCase;

/** Tests of the world alone (no window): a level, the player placed by hand, tics with commands. */
abstract class WorldTestCase extends TestCase
{
    protected World $world;

    protected function load(string $level, int $skill = World::SKILL_NORMAL): World
    {
        $this->world = new World(Campaign::level(dirname(__DIR__) . "/assets/maps/$level.json", $level), $skill, null, 3);
        return $this->world;
    }

    /** Puts the player in the middle of cell ($col, $row) of the level text, looking at $degrees. */
    protected function placePlayer(int $col, int $row, float $degrees): Mobj
    {
        $mo = $this->world->player->mo;
        [$x, $y] = $this->cell($col, $row);
        $mo->x = $mo->px = $x;
        $mo->y = $mo->py = $y;
        $this->world->link($mo);
        $mo->z = $mo->floorz = $mo->sector->floor;
        $mo->angle = deg2rad($degrees);
        return $mo;
    }

    /** @return array{0: float, 1: float} the centre of a cell of the level text */
    protected function cell(int $col, int $row): array
    {
        $rows = count($this->world->level->data['map']);
        return [$col * 64 + 32, ($rows - $row) * 64 - 32];
    }

    protected function tics(int $tics, array $cmd = []): void
    {
        for ($i = 0; $i < $tics; $i++) {
            $this->world->tic($cmd + ['forward' => 0, 'side' => 0, 'turn' => 0.0, 'fire' => false, 'use' => false, 'weapon' => null]);
        }
    }

    /** Removes every monster (a quiet level to test a mechanic). */
    protected function noMonsters(): void
    {
        foreach ($this->world->mobjs as $mo) {
            if ($mo->is(\App\Game\Info::COUNTKILL)) {
                $this->world->remove($mo);
            }
        }
    }
}