cambridge/tetris/randomizers/fixed_sequence.lua

local Randomizer = require 'tetris.randomizers.randomizer'

local Sequence = Randomizer:extend()

function Sequence:initialize()
    self.sequence = "IJLOT"
    self.counter = 0
end

function Sequence:generatePiece()
    local piece
    if type(self.sequence) == "string" then
        piece = string.sub(self.sequence, self.counter + 1, self.counter + 1)
    else
        piece = self.sequence[self.counter + 1]
    end
    self.counter = (self.counter + 1) % (#self.sequence)
    return piece
end

return Sequence