cambridge/tetris/randomizers/bag5alt.lua

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local Randomizer = require 'tetris.randomizers.randomizer'
local Bag5AltRandomizer = Randomizer:extend()
function Bag5AltRandomizer:initialize()
self.bag = {"I", "J", "L", "O", "T"}
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self.prev = nil
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end
function Bag5AltRandomizer:generatePiece()
if next(self.bag) == nil then
self.bag = {"I", "J", "L", "O", "T"}
end
local x = math.random(table.getn(self.bag))
local temp = table.remove(self.bag, x)
if temp == self.prev then
local y = math.random(table.getn(self.bag))
temp = table.remove(self.bag, y)
end
self.prev = temp
return temp
end
return Bag5AltRandomizer