cambridge/tetris/modes/sakura.lua

require 'funcs'

local GameMode = require 'tetris.modes.gamemode'
local Piece = require 'tetris.components.piece'

local SakuraRandomizer = require 'tetris.randomizers.sakura'
local History6RollsRandomizer = require 'tetris.randomizers.history_6rolls_35bag'

local SakuraGame = GameMode:extend()

SakuraGame.name = "Sakura A3"
SakuraGame.hash = "SakuraA3"
SakuraGame.tagline = "Clear away the Gem Blocks as fast as possible!"

local b = {
    ["r"] = { skin = "2tie", colour = "R" },
    ["o"] = { skin = "2tie", colour = "O" },
    ["y"] = { skin = "2tie", colour = "Y" },
    ["g"] = { skin = "2tie", colour = "G" },
    ["c"] = { skin = "2tie", colour = "C" },
    ["b"] = { skin = "2tie", colour = "B" },
    ["m"] = { skin = "2tie", colour = "M" },
    ["R"] = { skin = "gem", colour = "R" },
    ["O"] = { skin = "gem", colour = "O" },
    ["Y"] = { skin = "gem", colour = "Y" },
    ["G"] = { skin = "gem", colour = "G" },
    ["C"] = { skin = "gem", colour = "C" },
    ["B"] = { skin = "gem", colour = "B" },
    ["M"] = { skin = "gem", colour = "M" },
}

local effects = {
    [4] = "mirror",
    [8] = "xray",
    [12] = "color",
    [13] = "mirror",
    [16] = "roll",
    [23] = "big"
}

local maps = {
    [1] = {
        [22] = {nil, nil, b.O, b.R, nil, nil, b.M, b.m, nil, nil},
        [23] = {nil, b.G, b.c, b.c, b.c, b.c, b.c, b.c, b.Y, nil},
        [24] = {nil, b.C, b.y, b.y, b.y, b.y, b.y, b.y, b.B, nil},
    },
    [2] = {
        [20] = {nil, nil, nil, nil, b.G, b.b, b.b, b.M, nil, nil},
        [21] = {nil, nil, nil, nil, b.c, b.c, b.c, b.c, nil, nil},
        [22] = {nil, nil, nil, nil, nil, b.R, b.Y, b.O, nil, nil},
        [23] = {nil, b.B, b.c, b.c, b.c, b.c, b.c, b.c, b.c, nil},
        [24] = {nil, b.b, b.b, b.b, b.b, b.b, b.b, b.b, b.C, nil},
    },
    [3] = {
        [20] = {nil, nil, nil, b.R, b.m, b.o, b.M, nil, nil, nil},
        [21] = {nil, nil, nil, nil, b.o, b.O, nil, nil, nil, nil},
        [22] = {nil, nil, nil, nil, b.G, b.Y, nil, nil, nil, nil},
        [23] = {nil, b.m, b.o, b.m, b.o, b.m, b.o, b.m, b.o, nil},
        [24] = {nil, b.B, b.m, b.o, b.m, b.o, b.m, b.o, b.C, nil},
    },
    [4] = {
        [21] = {nil, nil, b.O, b.g, b.g, b.g, b.g, nil, nil, nil},
        [22] = {nil, nil, nil, b.R, b.M, b.b, b.b, nil, nil, nil},
        [23] = {b.G, nil, b.Y, b.g, b.g, b.g, b.g, b.g, nil, nil},
        [24] = {b.b, b.C, b.b, b.b, b.b, b.b, b.b, b.b, b.B, nil},
    },
    [5] = {
        [16] = {nil, b.B, b.c, b.y, b.c, b.G, b.c, b.y, b.C, nil},
        [22] = {nil, nil, b.c, b.y, b.c, b.y, b.c, b.y, nil, nil},
        [23] = {nil, b.O, b.y, b.c, b.y, b.c, b.y, b.c, b.Y, nil},
        [24] = {nil, b.R, b.c, b.y, b.c, b.y, b.c, b.y, b.M, nil},
    },
    [6] = {
        [21] = {nil, nil, nil, nil, b.O, b.Y, nil, nil, nil, nil},
        [22] = {nil, nil, b.R, nil, b.b, b.y, nil, b.M, nil, nil},
        [23] = {nil, nil, nil, nil, b.y, b.b, nil, nil, nil, nil},
        [24] = {nil, b.G, b.y, b.b, b.C, b.y, b.b, b.y, b.B, nil},
    },
    [7] = {
        [20] = {nil, b.C, b.G, nil, b.r, b.g, b.r, b.g, nil, nil},
        [21] = {nil, nil, nil, nil, b.R, b.M, b.g, b.r, nil, nil},
        [22] = {b.r, nil, nil, nil, b.r, b.g, b.O, b.Y, nil, nil},
        [23] = {b.g, b.r, b.g, b.r, b.g, b.r, b.g, b.r, nil, nil},
        [24] = {b.r, b.g, b.r, b.g, b.r, b.g, b.r, b.g, b.B, nil},
    },
    [8] = {
        [15] = {nil, nil, nil, b.B, b.m, b.m, b.m, b.m, b.m, b.C},
        [16] = {nil, nil, nil, nil, nil, nil, nil, nil, nil, b.m},
        [17] = {nil, nil, nil, nil, nil, nil, nil, nil, nil, b.m},
        [18] = {nil, b.Y, b.y, b.y, b.y, b.y, b.y, b.y, b.y, b.G},
        [21] = {b.b, b.b, b.b, b.b, b.b, b.b, b.O, nil, nil, nil},
        [22] = {b.b, nil, nil, nil, nil, nil, nil, nil, nil, nil},
        [23] = {b.M, nil, nil, nil, nil, nil, nil, nil, nil, nil},
        [24] = {b.o, b.o, b.o, b.o, b.o, b.o, b.o, b.o, b.R, nil},
    },
    [9] = {
        [18] = {nil, nil, nil, b.Y, b.m, b.m, b.m, b.m, nil, nil},
        [19] = {nil, nil, nil, b.c, b.c, b.c, b.c, b.G, nil, nil},
        [20] = {b.m, b.m, b.m, b.O, b.M, b.R, nil, nil, nil, nil},
        [21] = {b.c, b.c, b.c, b.c, b.c, b.c, b.c, b.c, nil, nil},
        [22] = {b.m, b.m, b.m, b.m, b.m, b.m, b.m, b.m, nil, nil},
        [23] = {b.c, b.c, b.c, b.c, b.c, b.c, b.c, b.c, b.C, nil},
        [24] = {b.m, b.m, b.m, b.m, b.m, b.m, b.m, b.m, b.B, nil},
    },
    [10] = {
        [18] = {nil, nil, nil, b.C, b.g, b.g, b.B, nil, nil, nil},
        [19] = {nil, nil, b.G, b.g, b.g, b.g, b.g, b.Y, nil, nil},
        [20] = {nil, b.M, b.g, b.g, b.g, b.g, b.g, b.g, b.O, nil},
        [21] = {nil, nil, nil, nil, b.c, nil, nil, nil, nil, nil},
        [22] = {nil, nil, nil, nil, b.c, nil, nil, nil, nil, nil},
        [23] = {nil, nil, nil, nil, b.c, nil, b.o, nil, nil, nil},
        [24] = {nil, nil, nil, nil, b.R, b.o, b.o, nil, nil, nil},
    },
    [11] = {
        [18] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [19] = {nil, nil, nil, nil, b.R, nil, nil, nil, nil, nil},
        [20] = {nil, nil, nil, nil, b.r, b.O, nil, nil, nil, nil},
        [21] = {nil, nil, nil, nil, nil, b.M, nil, nil, nil, nil},
        [22] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [23] = {nil, nil, nil, nil, b.G, b.Y, nil, nil, nil, nil},
        [24] = {b.C, b.g, b.g, nil, b.o, b.o, nil, b.g, b.g, b.B},
    },
    [12] = {
        [21] = {nil, nil, nil, nil, nil, nil, nil, b.g, b.g, b.Y},
        [22] = {nil, nil, b.r, b.G, b.r, nil, nil, nil, b.O, b.g},
        [23] = {nil, b.r, b.C, b.r, b.B, b.r, nil, nil, nil, b.M},
        [24] = {b.r, b.r, b.r, b.R, b.r, b.r, b.r, nil, nil, nil},
    },
    [13] = {
        [20] = {b.c, nil, nil, nil, nil, nil, nil, nil, nil, b.B},
        [21] = {b.c, b.c, nil, nil, nil, nil, nil, nil, b.C, b.c},
        [22] = {b.c, b.c, b.c, nil, nil, nil, nil, b.G, b.c, b.c},
        [23] = {b.b, b.b, b.b, b.b, nil, nil, b.Y, b.b, b.b, b.b},
        [24] = {nil, b.M, b.b, b.b, b.b, b.O, b.b, b.b, b.R, nil},
    },
    [14] = {
        [20] = {nil, nil, nil, b.y, b.r, b.y, nil, nil, nil, nil},
        [21] = {b.R, nil, nil, b.Y, b.y, b.r, b.G, nil, nil, nil},
        [22] = {nil, nil, nil, b.y, b.r, b.y, b.r, b.y, b.r, b.B},
        [23] = {nil, nil, nil, nil, nil, nil, nil, b.O, b.y, b.r},
        [24] = {nil, nil, nil, nil, nil, nil, b.M, b.y, b.r, b.C},
    },
    [15] = {
        [17] = {nil, nil, b.b, nil, nil, nil, nil, b.b, nil, nil},
        [18] = {nil, nil, b.b, b.y, b.b, b.b, b.y, b.b, nil, nil},
        [19] = {nil, nil, nil, b.y, b.b, b.b, b.y, nil, nil, nil},
        [20] = {nil, nil, nil, nil, b.O, b.Y, nil, nil, nil, nil},
        [22] = {nil, nil, nil, nil, b.M, b.R, nil, nil, nil, nil},
        [23] = {nil, nil, nil, b.G, b.y, b.y, b.C, nil, nil, nil},
        [24] = {nil, nil, b.B, b.y, b.y, b.y, b.y, b.y, nil, nil},
    },
    [16] = {
        [18] = {nil, nil, b.O, nil, nil, nil, nil, b.B, nil, nil},
        [19] = {nil, nil, b.c, nil, nil, b.G, nil, b.c, nil, nil},
        [20] = {nil, nil, b.c, nil, b.C, b.R, nil, b.c, nil, nil},
        [21] = {nil, nil, b.c, nil, nil, nil, nil, b.c, nil, nil},
        [22] = {nil, nil, b.Y, b.c, b.c, b.c, b.c, b.M, nil, nil},
    },
    [17] = {
        [15] = {b.O, nil, nil, b.g, nil, nil, b.m, nil, nil, b.Y},
        [16] = {nil, nil, nil, b.g, nil, nil, b.m, nil, nil, nil},
        [17] = {nil, nil, nil, b.g, nil, nil, b.R, nil, nil, nil},
        [18] = {nil, nil, nil, b.g, nil, nil, b.m, nil, nil, nil},
        [19] = {nil, nil, nil, b.M, nil, nil, b.m, nil, nil, nil},
        [20] = {nil, nil, nil, b.g, nil, nil, b.m, nil, nil, nil},
        [21] = {nil, nil, nil, b.g, nil, nil, b.G, nil, nil, nil},
        [22] = {nil, nil, nil, b.g, nil, nil, b.m, nil, nil, nil},
        [23] = {nil, nil, nil, b.g, nil, nil, b.m, nil, nil, nil},
        [24] = {nil, b.m, b.m, b.m, b.B, b.C, b.g, b.g, b.g, nil},
    },
    [18] = {
        [19] = {nil, nil, nil, b.y, b.B, b.y, b.y, nil, nil, nil},
        [20] = {nil, nil, b.y, nil, nil, nil, nil, b.y, nil, nil},
        [21] = {nil, b.o, nil, nil, b.C, b.R, nil, nil, b.O, nil},
        [22] = {nil, b.M, nil, nil, b.Y, b.G, nil, nil, b.o, nil},
        [23] = {nil, b.r, b.o, nil, nil, nil, nil, b.o, b.r, nil},
        [24] = {nil, b.r, b.r, b.o, b.o, b.o, b.o, b.r, b.r, nil},
    },
    [19] = {
        [15] = {nil, nil, nil, nil, nil, nil, b.O, nil, nil, nil},
        [16] = {nil, nil, nil, nil, nil, b.o, nil, nil, nil, nil},
        [17] = {nil, nil, nil, nil, b.o, b.r, b.o, nil, nil, nil},
        [18] = {nil, b.o, nil, nil, b.o, b.r, b.r, b.o, nil, nil},
        [19] = {nil, b.o, b.o, nil, nil, b.R, b.r, b.r, nil, nil},
        [20] = {nil, nil, b.M, b.r, nil, b.r, b.r, b.r, b.r, nil},
        [21] = {nil, nil, b.r, b.r, b.r, b.r, b.y, b.G, b.o, b.o},
        [22] = {nil, b.r, b.o, b.y, b.Y, b.y, b.y, b.y, b.y, b.o},
        [23] = {nil, b.o, b.o, b.y, b.y, b.c, b.c, b.c, b.c, b.C},
        [24] = {nil, nil, b.o, b.y, b.b, b.b, b.B, b.b, b.b, b.b},
    },
    [20] = {
        [20] = {nil, nil, b.B, b.b, b.b, b.b, b.b, b.b, nil, nil},
        [21] = {b.c, nil, nil, b.C, b.c, b.c, b.c, nil, nil, b.c},
        [22] = {b.g, b.g, nil, nil, b.G, b.g, nil, nil, b.g, b.g},
        [23] = {b.y, b.y, b.o, nil, nil, nil, nil, b.Y, b.y, b.y},
        [24] = {b.r, b.r, b.r, b.R, nil, nil, b.M, b.r, b.r, b.r},
    },
    [21] = {
        [16] = {nil, nil, b.g, b.g, b.g, b.g, b.g, nil, nil, nil},
        [17] = {nil, b.g, b.g, b.g, b.g, b.g, b.g, b.B, b.g, nil},
        [18] = {b.g, b.g, b.g, b.g, b.g, b.g, b.g, b.g, b.C, nil},
        [19] = {b.g, nil, nil, b.g, b.o, b.o, b.g, nil, nil, b.g},
        [20] = {nil, b.R, nil, b.g, b.o, b.o, nil, b.M, nil, b.G},
        [21] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [22] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [23] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [24] = {nil, nil, nil, nil, b.Y, b.O, nil, nil, nil, nil},
    },
    [22] = {
        [15] = {nil, nil, b.b, nil, nil, nil, nil, b.b, nil, nil},
        [16] = {nil, b.b, b.O, b.b, nil, nil, b.b, b.Y, b.b, nil},
        [17] = {nil, nil, b.b, nil, nil, nil, nil, b.b, nil, nil},
        [20] = {nil, nil, nil, nil, b.R, b.M, nil, nil, nil, nil},
        [23] = {nil, nil, nil, b.b, b.C, b.G, b.b, nil, nil, nil},
        [24] = {nil, nil, nil, b.b, b.b, b.B, b.b, nil, nil, nil},
    },
    [23] = {
        [13] = {nil, nil, nil, nil, nil, nil, nil, nil, b.c, b.m},
        [14] = {nil, nil, nil, nil, nil, nil, nil, nil, b.y, b.g},
        [15] = {b.G, b.B, nil, nil, nil, nil, nil, nil, nil, nil},
        [16] = {b.r, b.O, nil, nil, nil, nil, nil, nil, nil, nil},
        [23] = {nil, nil, nil, nil, b.C, b.M, nil, nil, nil, nil},
        [24] = {nil, nil, nil, nil, b.R, b.Y, nil, nil, nil, nil},
    },
    [24] = {
        [20] = {b.g, b.g, b.g, b.g, b.G, nil, nil, nil, nil, nil},
        [21] = {nil, nil, nil, nil, nil, b.O, b.y, b.y, b.y, b.Y},
        [23] = {b.M, b.r, b.r, b.r, b.R, nil, nil, nil, nil, nil},
        [24] = {nil, nil, nil, nil, nil, b.M, b.r, b.r, b.r, b.R},
    },
    [25] = {
        [18] = {nil, nil, nil, nil, nil, b.B, nil, nil, nil, nil},
        [19] = {nil, nil, nil, b.G, nil, nil, nil, b.C, nil, nil},
        [20] = {nil, nil, nil, nil, nil, b.Y, nil, nil, nil, nil},
        [21] = {nil, nil, nil, b.M, nil, nil, nil, b.O, nil, nil},
        [22] = {nil, nil, nil, nil, nil, b.R, nil, nil, nil, nil},
    },
    [26] = {
        [13] = {nil, nil, nil, nil, b.r, b.r, nil, nil, nil, nil},
        [14] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [15] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [16] = {nil, nil, nil, nil, b.o, b.o, nil, nil, nil, nil},
        [17] = {nil, nil, nil, b.O, b.o, b.o, b.Y, nil, nil, nil},
        [18] = {nil, nil, b.o, b.c, b.c, b.c, b.c, b.o, nil, nil},
        [19] = {nil, nil, b.o, b.c, b.c, b.c, b.c, b.o, nil, nil},
        [20] = {nil, nil, b.o, nil, nil, b.G, nil, b.o, nil, nil},
        [21] = {nil, nil, b.o, nil, b.M, b.R, nil, b.o, nil, nil},
        [22] = {nil, nil, b.o, b.b, b.b, b.b, b.B, b.o, nil, nil},
        [23] = {nil, nil, b.o, b.C, b.b, b.b, b.b, b.o, nil, nil},
        [24] = {nil, nil, b.o, b.o, b.o, b.o, b.o, b.o, nil, nil},
    },
    [27] = {
        [15] = {nil, b.C, b.o, b.g, b.g, b.g, b.g, b.g, b.B, nil},
        [16] = {b.g, nil, b.y, b.o, b.g, b.g, b.g, b.g, nil, b.y},
        [17] = {b.g, b.g, nil, b.y, b.o, b.g, b.g, nil, b.y, b.o},
        [18] = {b.g, b.g, b.g, nil, b.y, b.o, nil, b.y, b.o, b.g},
        [19] = {b.g, b.g, b.g, b.o, nil, b.G, b.y, b.o, b.g, b.g},
        [20] = {b.g, b.g, b.o, b.o, b.Y, nil, b.o, b.g, b.g, b.g},
        [21] = {b.g, b.o, b.y, nil, b.o, b.O, nil, b.g, b.g, b.g},
        [22] = {b.o, b.y, nil, b.g, b.g, b.o, b.y, nil, b.g, b.g},
        [23] = {b.y, nil, b.g, b.g, b.g, b.g, b.o, b.y, nil, b.g},
        [24] = {nil, b.M, b.g, b.g, b.g, b.g, b.g, b.o, b.R, nil},
    },
}

local STAGE_TRANSITION_TIME = 300

function SakuraGame:new(secret_inputs)
    self.super:new()

    self.randomizer = (
        (
            secret_inputs.rotate_left and secret_inputs.rotate_right
        ) and History6RollsRandomizer() or SakuraRandomizer()
    )
    
    self.current_map = 1
    self.time_limit = 10800
    self.cleared_frames = STAGE_TRANSITION_TIME
    self.stage_frames = 0
    self.time_extend = 0
    self.maps_cleared = 0
    self.map_20_time = 0
    self.stage_pieces = 0
    self.grid:applyMap(maps[self.current_map])
    
    self.lock_drop = true
    self.lock_hard_drop = true
    self.enable_hold = true
    self.next_queue_length = 3
end

function SakuraGame:checkRequirements()
    if self.maps_cleared >= 14 + 2 * (self.current_map - 20) and
    self.map_20_time <= frameTime(8,00) - frameTime(0,30) * (self.current_map - 20)
    then 
        return false
    end
    return true
end

function SakuraGame:getGravity()
    if self.level < 8   then return 4/256
elseif self.level < 19  then return 5/256
elseif self.level < 35  then return 6/256
elseif self.level < 40  then return 8/256
elseif self.level < 50  then return 10/256
elseif self.level < 60  then return 12/256
elseif self.level < 70  then return 16/256
elseif self.level < 80  then return 32/256
elseif self.level < 90  then return 48/256
elseif self.level < 100 then return 64/256
elseif self.level < 108 then return 4/256
elseif self.level < 119 then return 5/256
elseif self.level < 125 then return 6/256
elseif self.level < 131 then return 8/256
elseif self.level < 139 then return 12/256
elseif self.level < 149 then return 32/256
elseif self.level < 156 then return 48/256
elseif self.level < 164 then return 80/256
elseif self.level < 174 then return 112/256
elseif self.level < 180 then return 128/256
elseif self.level < 200 then return 144/256
elseif self.level < 212 then return 16/256
elseif self.level < 221 then return 48/256
elseif self.level < 232 then return 80/256
elseif self.level < 244 then return 112/256
elseif self.level < 256 then return 144/256
elseif self.level < 267 then return 176/256
elseif self.level < 277 then return 192/256
elseif self.level < 287 then return 208/256
elseif self.level < 295 then return 224/256
elseif self.level < 300 then return 240/256
else return 20 end
end

function SakuraGame:onLineClear(cleared_row_count)
    self.level = self.level + cleared_row_count
    for i = 13, 24 do
        for j = 1, 10 do
            local block = self.grid.grid[i][j]
            if block and block.skin == "gem" and block.colour == "X" then
                self.time_limit = self.time_limit + 60
            end
        end
    end
end

function SakuraGame:onPieceEnter()
    if self.level % 100 ~= 99 and not self.clear and self.stage_frames ~= 0 then
		self.level = self.level + 1
	end
    if effects[self.current_map] == "mirror" and
       self.stage_pieces % 3 == 0 and self.stage_pieces ~= 0
       then
        self.grid:mirror()
    end
    self.stage_pieces = self.stage_pieces + 1
end

function SakuraGame:advanceOneFrame(inputs, ruleset)
    if self.ready_frames == 0 then
        if self.lcd > 0 then
                if self.stage_frames <= frameTime(0,10) then self.time_extend = 600
            elseif self.stage_frames <= frameTime(0,30) then self.time_extend = 300
            else self.time_extend = 0 end
        end

        if not self.grid:hasGemBlocks() or
        (self.stage_frames >= 3600 and self.current_map <= 20) then
            self.lcd = 0
            self.are = 0
            if self.stage_frames >= 3600 then self.time_extend = 0 end
            self.piece = nil

            -- transition to next map
            if self.cleared_frames > 0 then
                self.cleared_frames = self.cleared_frames - 1
                if self.time_extend > 0 then
                    self.time_limit = self.time_limit + 3
                    self.time_extend = self.time_extend - 3
                end
                return false
            end
            
            self.hold_queue = nil
            if self.current_map > 20 or (self.stage_frames < 3600 and self.current_map <= 20) then self.maps_cleared = self.maps_cleared + 1 end
            self.stage_frames = -1
            self.level = 0
            self.grid:clear()
            if (self.current_map == 20) then self.map_20_time = self.frames end
            if self.current_map >= 20 and self:checkRequirements() then
                self.clear = true
                self.completed = true
                return false
            else
                self.current_map = self.current_map + 1
                self.big_mode = effects[self.current_map] == "big"
                self.ready_frames = 100
                self.stage_pieces = 0
                self.grid:applyMap(maps[self.current_map])
            end
            
            -- this is necessary to fix timer
            self.frames = self.frames - 1
            self.time_limit = self.time_limit + 1
        end
        
        self.frames = self.frames + 1
        self.stage_frames = self.stage_frames + 1
        self.time_limit = self.time_limit - 1
        if self.time_limit <= 0 then self.game_over = true end

        if self.piece ~= nil and self.frames % 30 == 0 and
           effects[self.current_map] == "roll"
           then
            ruleset:attemptRotate(
                {[config.gamesettings.world_reverse == 3 or
                (ruleset.world and config.gamesettings.world_reverse == 2)
                and "rotate_left" or "rotate_right"] = true},
                self.piece, self.grid, false
            )
        end
    else
        self.cleared_frames = STAGE_TRANSITION_TIME
        if not self.prev_inputs.hold and inputs.hold then
            self.hold_queue = table.remove(self.next_queue, 1)
            table.insert(self.next_queue, self:getNextPiece(ruleset))
        end
    end
    return true
end

local function colourXRay(game, block, x, y, age)
    local r, g, b, a = .5,.5,.5
    if ((game.stage_frames/2 - x) % 30 < 1)
    or game.stage_frames == 0
    or game.cleared_frames ~= STAGE_TRANSITION_TIME
    or game.stage_pieces % 2 == 0
    then
        a = 1
    else
        a = 1 - age / 4
    end
    return r, g, b, a, a
end

local function colourColor(game, block, x, y, age)
    local r, g, b, a = .5,.5,.5
    if game.stage_frames == 0 or game.cleared_frames ~= STAGE_TRANSITION_TIME then
        a = 1
    else
        a = (game.stage_frames/30 + (y + math.abs(x-5.5))/5) % 1
    end
    return r, g, b, a, 0
end

function SakuraGame:drawGrid()
    if effects[self.current_map] == "xray" then
        self.grid:drawCustom(colourXRay, self)
	elseif effects[self.current_map] == "color" then
        self.grid:drawCustom(colourColor, self)
	else
        self.grid:draw()
        -- if self.piece ~= nil and self.level < 100 then
            self:drawGhostPiece(ruleset)
        -- end
	end
end

function SakuraGame:drawScoringInfo()
    love.graphics.setColor(1, 1, 1, 1)
    
    love.graphics.setFont(font_3x5_2)
    love.graphics.print(
		self.das.direction .. " " ..
		self.das.frames .. " " ..
		strTrueValues(self.prev_inputs)
    )
    love.graphics.printf("NEXT", 64, 40, 40, "left")
    love.graphics.printf("STAGE", 240, 120, 80, "left")
    love.graphics.printf("TIME LIMIT", 240, 180, 80, "left")
    love.graphics.printf("LEVEL", 240, 320, 40, "left")
    if self.current_map <= 20 then
        love.graphics.printf("STAGE LIMIT", 240, 240, 100, "left")
    end
    if effects[self.current_map] then
        love.graphics.printf("EFFECT: " .. effects[self.current_map], 240, 300, 160, "left")
    end
    if self.randomizer.history then
        love.graphics.printf("RANDOM PIECES ACTIVE!", 240, 295, 200, "left")
    end

    love.graphics.setFont(font_3x5_3)
    love.graphics.setColor(
        (self.time_limit % 4 < 2 and
        self.time_limit <= frameTime(0,10) and
        self.grid:hasGemBlocks() and
        self.time_limit ~= 0) and
        { 1, 0.3, 0.3, 1 } or
        { 1, 1, 1, 1 }
    )
    love.graphics.printf(formatTime(self.time_limit), 240, 200, 120, "left")
    love.graphics.setColor(1, 1, 1, 1)
    if self.current_map <= 20 then
        love.graphics.printf(formatTime(3600 - self.stage_frames), 240, 260, 120, "left")
    end
    love.graphics.printf(self.level, 240, 340, 40, "right")
	love.graphics.printf(math.floor((self.level + 100) / 100) * 100, 240, 370, 40, "right")

    love.graphics.setFont(font_8x11)
    love.graphics.printf(formatTime(self.frames), 64, 420, 160, "center")
    love.graphics.printf(self.current_map, 290, 110, 80, "left")
end

function SakuraGame:drawCustom()
    love.graphics.setColor(1, 1, 1, 1)

    if self.ready_frames ~= 0 and not self.clear then
        love.graphics.setFont(font_3x5_4)
        love.graphics.printf("STAGE " .. self.current_map, 64, 170, 160, "center")

        love.graphics.setFont(font_3x5_3)
        if effects[self.current_map] then
            love.graphics.printf("EFFECT: " .. effects[self.current_map], 64, 270, 160, "center")
        end
    end

    if self.cleared_frames > 0 and
    (not self.grid:hasGemBlocks() or
    (self.stage_frames >= 3600 and self.current_map <= 20)) then
        love.graphics.setFont(font_3x5_2)
        love.graphics.printf("TIME LIMIT", 64, 180, 160, "center")
        love.graphics.printf("TIME EXTEND", 64, 240, 160, "center")
        love.graphics.printf("STAGE TIME", 64, 300, 160, "center")
        
        love.graphics.setFont(font_3x5_3)
        love.graphics.printf("STAGE " .. self.current_map, 64, 100, 160, "center")
        love.graphics.setColor(
            self.cleared_frames % 4 < 2 and
            { 1, 1, 0.3, 1 } or
            { 1, 1, 1, 1 }
        )
        love.graphics.printf(formatTime(self.time_limit), 64, 200, 160, "center")
        love.graphics.setColor(1, 1, 1, 1)
        love.graphics.printf(formatTime(self.time_extend), 64, 260, 160, "center")
        love.graphics.printf(formatTime(self.stage_frames), 64, 320, 160, "center")

        love.graphics.setFont(font_3x5_4)
        love.graphics.printf((self.stage_frames >= 3600 and self.current_map <= 20) and "" or "CLEAR!", 64, 130, 160, "center")
    end

    if self.clear then
        love.graphics.setFont(font_3x5_3)
        love.graphics.printf("EXCELLENT!", 64, 180, 160, "center")

        love.graphics.setFont(font_3x5_2)
        if self.current_map ~= 27 then
            love.graphics.printf("...but let's go\nbetter next time", 64, 220, 160, "center")
        end
    end
end

function SakuraGame:getBackground()
    return (self.current_map - 1) % 20
end

function SakuraGame:getHighscoreData()
    return {
        maps = self.maps_cleared,
        current_map = self.current_map,
        frames = self.frames,
    }
end

return SakuraGame