<?phpnamespace App\Entities\Objects;use App\Gfx\Gfx;use App\Audio\SoundManager;/** * Scrap Brain doors (_9ed4 + doObjectCode_door*): $17 opens for Sonic on its left, $18 on its right, * $19 both, $1E follows the level switch ($D317 bit, inverted for a door without the $A3 block above it). * X + 20 under an $A3 block, else X + 4. The counter goes 0..$30 (+/-1 per frame, 2 for the switch door) * and the door slides into the ceiling: wall 4 x (48 - counter) while counter < $28. SFX $19 when it * starts to open or close. A door blocking Sonic puts him back at doorX - 20 / doorX + 5 and stops him. */class Door extends Mechanism{ private const SPRITES = [0x17 => 96, 0x18 => 112, 0x19 => 80, 0x1E => 128]; private const MAX = 0x30; private float $baseY; private int $counter = 0; private bool $inverted; private bool $switchOn = false; public function __construct(Gfx $sdl, int $type, string $typeName, int $tileX, int $tileY, ?int $blockAbove) { $inverted = $blockAbove !== 0xA3; parent::__construct($sdl, $type, $typeName, $tileX * 32 + ($inverted ? 4 : 20), $tileY * 32, 8, 48); $this->baseY = $this->y; $this->inverted = $inverted; } /** Switch door created with the level switch already on: shown in its final position (no opening on screen). */ public function settle(bool $switchOn): static { if ($this->objectType === 0x1E) { $this->switchOn = $switchOn; $open = $this->inverted ? !$switchOn : $switchOn; $this->counter = $open ? self::MAX : 0; } return $this; } public function setSwitchFlag(bool $on): void { $this->switchOn = $on; } protected function tick(array $player): void { if ($this->objectType === 0x1E) { $open = $this->inverted ? !$this->switchOn : $this->switchOn; $this->counter = $open ? min(self::MAX, $this->counter + 2) : max(0, $this->counter - 2); return; } $sx = self::heroX($player); $sy = self::heroY($player); [$from, $to] = match ($this->objectType) { 0x17 => [-56, 0], 0x18 => [-16, 36], default => [-56, 36], }; $near = $sx > $this->x + $from && $sx <= $this->x + $to && $sy > $this->baseY - 32 && $sy <= $this->baseY + 80; if ($near && $this->counter < self::MAX) { if ($this->counter++ === 0) { $this->sounds[] = SoundManager::SFX_LIFT; } } elseif (!$near && $this->counter > 0) { if (--$this->counter === self::MAX - 1) { $this->sounds[] = SoundManager::SFX_LIFT; } } } public function getSolidBox(): ?array { if ($this->counter >= 0x28) return null; return self::box($this->x + 2, $this->baseY, 4, 48 - $this->counter); } public function render(float $cameraX, float $cameraY): void { $height = 48 - $this->counter; if ($height <= 0) return; // the part slid above the frame is hidden in the ceiling $this->blit([self::SPRITES[$this->objectType], 80 + $this->counter, 8, $height], $this->x, $this->baseY, $cameraX, $cameraY); }}