51 lines
1.3 KiB
Swift
51 lines
1.3 KiB
Swift
//
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// GamePiece.swift
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// TetrisKit
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//
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// Created by Shadowfacts on 10/13/19.
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// Copyright © 2019 Shadowfacts. All rights reserved.
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//
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import Foundation
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public struct GamePiece {
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public let tetromino: Tetromino
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public var topLeft: (Int, Int)
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public internal(set) var rotation: Double = 0
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public internal(set) var tiles: [[Bool]]
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public init(tetromino: Tetromino, topLeft: (Int, Int) = (0, 0)) {
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self.tetromino = tetromino
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self.tiles = tetromino.shape
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self.topLeft = topLeft
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}
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mutating func rotate(direction: RotationDirection) {
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switch direction {
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case .clockwise:
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self.tiles.rotateClockwise()
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rotation += 90
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case .counterClockwise:
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self.tiles.rotateCounterclockwise()
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rotation -= 90
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}
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}
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}
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public enum RotationDirection {
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case clockwise, counterClockwise
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}
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extension GamePiece {
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public func moved(by: (Int, Int)) -> GamePiece {
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var modified = self
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modified.topLeft = (topLeft.0 + by.0, topLeft.1 + by.1)
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return modified
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}
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public func rotated(_ direction: RotationDirection) -> GamePiece {
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var modified = self
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modified.rotate(direction: direction)
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return modified
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}
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}
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