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<?php
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declare(strict_types=1);
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namespace Tests\Unit\Game;
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use App\Game\Entities\Boss;
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use App\Game\Entities\Bullet;
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use App\Game\Entities\Zombie;
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use App\Game\GameEngine;
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use App\Game\InputState;
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use App\Game\Player;
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use App\Game\Room;
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use App\Game\Spawner;
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use App\Game\Vector2;
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use PHPUnit\Framework\Attributes\Test;
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use PHPUnit\Framework\TestCase;
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final class GameEngineTest extends TestCase
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{
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#[Test]
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public function tick_does_nothing_when_not_playing(): void
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{
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$room = new Room('test');
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$engine = new GameEngine($room, new Spawner);
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$engine->tick(1.0 / 60.0);
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$this->assertSame(Room::STATE_LOBBY, $room->state);
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}
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#[Test]
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public function zombies_spawn_during_play(): void
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{
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$room = new Room('test');
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$room->state = Room::STATE_PLAYING;
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$engine = new GameEngine($room, new Spawner);
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$room->addPlayer(new Player('p1', 'Tester', new InputState(fire: true), $room->entities, $room, ['x' => 960.0, 'y' => 540.0]));
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$sawZombie = false;
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for ($i = 0; $i < 600; $i++) {
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$engine->tick(1.0 / 60.0);
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if ($room->entities->findByKind('zombie') !== []) {
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$sawZombie = true;
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}
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if ($room->state === Room::STATE_OVER) {
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break;
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}
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}
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$this->assertTrue($sawZombie, 'zombies should spawn during play');
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}
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#[Test]
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public function game_ends_when_all_players_die(): void
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{
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$room = new Room('test', 1);
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$room->state = Room::STATE_PLAYING;
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$engine = new GameEngine($room, new Spawner);
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$player = new Player('p1', 'Tester', new InputState, $room->entities, $room, [
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'x' => 960.0,
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'y' => 540.0,
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'health' => 1,
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]);
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$room->addPlayer($player);
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$zombie = new Zombie(944.4, 540.0, $room->entities, $room, ['emergeTime' => 0.0]);
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$zombie->target = $player;
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$room->entities->append($zombie);
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$engine->tick(1.0 / 60.0);
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$this->assertSame(Room::STATE_OVER, $room->state);
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$this->assertTrue($player->dead);
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}
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#[Test]
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public function bullets_damage_zombies(): void
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{
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$room = new Room('test');
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$room->state = Room::STATE_PLAYING;
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$engine = new GameEngine($room, new Spawner);
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$input = new InputState(fire: true);
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$player = new Player('p1', 'T', $input, $room->entities, $room, ['x' => 500.0, 'y' => 500.0]);
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$room->addPlayer($player);
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$zombie = new Zombie(1000.0, 500.0, $room->entities, $room, ['emergeTime' => 0.0]);
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$zombie->target = $player;
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$room->entities->append($zombie);
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$engine->tick(1.0 / 60.0);
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$bullets = $room->entities->findByKind('bullet');
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$this->assertNotEmpty($bullets, 'player shot a bullet');
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}
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#[Test]
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public function boss_spawns_at_score_threshold(): void
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{
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$room = new Room('test', 1);
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$room->state = Room::STATE_PLAYING;
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$engine = new GameEngine($room, new Spawner);
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$player = new Player('p1', 'T', new InputState, $room->entities, $room, ['x' => 500.0, 'y' => 500.0]);
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$room->addPlayer($player);
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$zombie = new Zombie(510.0, 500.0, $room->entities, $room, ['health' => 1, 'emergeTime' => 0.0, 'scoreValue' => 55]);
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$zombie->target = $player;
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$room->entities->append($zombie);
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$bullet = new Bullet(509.0, 500.0, new Vector2(1.0, 0.0), $room->entities, $room, $player, 800.0, 8.0, 1);
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$room->entities->append($bullet);
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$engine->tick(1.0 / 60.0);
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$this->assertGreaterThan(0, $player->score, 'player killed zombie at score threshold');
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$this->assertTrue($room->hasBoss(), 'boss should spawn when score reaches threshold');
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}
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#[Test]
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public function kills_increment_score(): void
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{
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$room = new Room('test');
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$room->state = Room::STATE_PLAYING;
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$engine = new GameEngine($room, new Spawner);
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$player = new Player('p1', 'T', new InputState, $room->entities, $room, ['x' => 500.0, 'y' => 500.0]);
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$room->addPlayer($player);
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$zombie = new Zombie(510.0, 500.0, $room->entities, $room, ['health' => 1, 'emergeTime' => 0.0]);
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$zombie->target = $player;
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$room->entities->append($zombie);
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$bullet = new Bullet(509.0, 500.0, new Vector2(1.0, 0.0), $room->entities, $room, $player, 800.0, 8.0, 10);
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$room->entities->append($bullet);
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$engine->tick(1.0 / 60.0);
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$this->assertGreaterThan(0, $player->score, 'player scored from killing zombie');
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}
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#[Test]
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public function zombies_appear_when_megatank_dies(): void
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{
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$room = new Room('test');
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$room->state = Room::STATE_PLAYING;
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$room->elapsed = 400.0;
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$spawner = new Spawner;
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$engine = new GameEngine($room, $spawner);
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$player = new Player('p1', 'T', new InputState, $room->entities, $room, ['x' => 960.0, 'y' => 540.0]);
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$room->addPlayer($player);
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$mega = null;
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for ($i = 0; $i < 100 && $mega === null; $i++) {
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$spawner->spawnZombie($room);
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$megas = $room->entities->findByKind('megatank');
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if ($megas !== []) {
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$mega = $megas[0];
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}
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}
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$this->assertNotNull($mega, 'a megatank should spawn when elapsed is high');
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$mega->pos = new Vector2(960.0, 250.0);
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$zombiesBefore = count($room->entities->findByKind('zombie'));
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$portalsBefore = $this->portalEventCount($room);
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$room->entities->append(new Bullet(960.0, 250.0, new Vector2(1.0, 0.0), $room->entities, $room, $player, 800.0, 8.0, 100));
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$engine->tick(1.0 / 60.0);
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$this->assertSame([], $room->entities->findByKind('megatank'), 'megatank should be removed on death');
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$this->assertSame($zombiesBefore + 3, count($room->entities->findByKind('zombie')), 'megatank death should spawn three zombies');
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$this->assertSame($portalsBefore + 3, $this->portalEventCount($room), 'each spawned zombie should get a portal effect');
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$this->assertContains('kill', array_map(fn (array $ev) => $ev['k'], $room->events));
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}
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#[Test]
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public function witches_appear_when_mega_witch_dies(): void
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{
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$room = new Room('test');
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$room->state = Room::STATE_PLAYING;
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$spawner = new Spawner;
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$engine = new GameEngine($room, $spawner);
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$player = new Player('p1', 'T', new InputState, $room->entities, $room, ['x' => 960.0, 'y' => 540.0]);
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$room->addPlayer($player);
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$spawner->spawnMegaWitch($room, 960.0, 250.0, 1.0, 1.0);
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$this->assertSame(1, count($room->entities->findByKind('megawitch')));
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$portalsBefore = $this->portalEventCount($room);
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$mega = $room->entities->findByKind('megawitch')[0];
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$room->entities->append(new Bullet($mega->pos->x, $mega->pos->y, new Vector2(1.0, 0.0), $room->entities, $room, $player, 800.0, 8.0, 100));
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$engine->tick(1.0 / 60.0);
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$this->assertSame([], $room->entities->findByKind('megawitch'));
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$this->assertCount(3, $room->entities->findByKind('witch'));
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$this->assertSame($portalsBefore + 3, $this->portalEventCount($room));
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}
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#[Test]
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public function emerging_minions_report_emerge_progress_in_snapshot(): void
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{
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$room = new Room('test');
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$zombie = new Zombie(10.0, 10.0, $room->entities, $room, ['emergeTime' => 0.8]);
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$snap = $zombie->toSnapshot();
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$this->assertSame(0.8, $snap['er']);
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$this->assertSame(0.8, $snap['et']);
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$zombie->update(0.3);
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$this->assertSame(0.5, $zombie->toSnapshot()['er'], 'emerge remaining should shrink as the zombie emerges');
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$plain = new Zombie(30.0, 30.0, $room->entities, $room);
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$this->assertArrayNotHasKey('er', $plain->toSnapshot(), 'non-emerging entities need no emerge data');
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}
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private function portalEventCount(Room $room): int
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{
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$count = 0;
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foreach ($room->events as $event) {
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if ($event['k'] === 'portal') {
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$count++;
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}
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}
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return $count;
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}
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#[Test]
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public function boss_defeated_event_emitted_on_boss_death(): void
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{
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$room = new Room('test');
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$room->state = Room::STATE_PLAYING;
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$engine = new GameEngine($room, new Spawner);
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$player = new Player('p1', 'T', new InputState, $room->entities, $room, ['x' => 500.0, 'y' => 500.0]);
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$room->addPlayer($player);
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$boss = new Boss(505.0, 500.0, $room->entities, $room, $player, [
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'health' => 1,
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'emergeTime' => 0.0,
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]);
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$boss->target = $player;
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$room->entities->append($boss);
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$bullet = new Bullet(503.0, 500.0, new Vector2(1.0, 0.0), $room->entities, $room, $player, 800.0, 8.0, 10);
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$room->entities->append($bullet);
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$engine->tick(1.0 / 60.0);
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$eventKinds = array_map(fn (array $ev) => $ev['k'], $room->events);
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$this->assertContains('bossdefeated', $eventKinds);
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}
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}
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