56 lines
1.3 KiB
Lua
56 lines
1.3 KiB
Lua
local Randomizer = require 'tetris.randomizers.randomizer'
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local MirrorRandomizer = Randomizer:extend()
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function MirrorRandomizer:initialize()
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self.mirror_state = false
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self.total_pieces = 0
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self.piece_stack = {}
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self.history = {"S", "Z"}
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self.shapes = {"I", "J", "L", "O", "S", "T", "Z"}
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self.mirrors = {
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["I"] = "O",
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["J"] = "L",
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["L"] = "J",
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["O"] = "I",
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["S"] = "Z",
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["T"] = "T",
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["Z"] = "S"
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}
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end
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function inHistory(piece, history)
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for idx, entry in pairs(history) do
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if entry == piece then
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return true
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end
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end
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return false
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end
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function MirrorRandomizer:generatePiece()
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local generated
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if self.mirror_state then
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generated = table.remove(self.piece_stack)
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else
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repeat
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generated = self.shapes[math.random(7)]
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until not inHistory(generated, self.history)
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table.remove(self.history, 1)
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table.insert(self.history, generated)
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table.insert(self.piece_stack, self.mirrors[generated])
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end
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self.total_pieces = self.total_pieces + 1
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if self.total_pieces % 14 == 0 then
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self.mirror_state = false
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elseif self.total_pieces % 14 == 7 then
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self.mirror_state = true
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end
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return generated
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end
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return MirrorRandomizer |