Removed some future features that I committed by accident

tetris/modes/gamemode.lua

@@ -69,7 +69,6 @@ function GameMode:new(secret_inputs)
 	self.used_randomizer = nil
 	self.hold_queue = nil
 	self.held = false
-	self.bgm_progression = 0
 	self.section_start_time = 0
 	self.section_times = { [0] = 0 }
 	self.secondary_section_times = { [0] = 0 }
@@ -288,10 +287,6 @@ function GameMode:update(inputs, ruleset)
 			end
 		end
 	end
-
-	-- end-of-frame actions, including music swap
-	self:swapMusic(self.level)
-
 	self.prev_inputs = inputs
 end
 
@@ -322,8 +317,6 @@ function GameMode:afterLineClear(cleared_row_count) end
 function GameMode:onPieceEnter() end
 function GameMode:onHold() end
 
-function GameMode:swapMusic(level) end
-
 function GameMode:onSoftDrop(dropped_row_count)
 	self.drop_bonus = self.drop_bonus + 1 * dropped_row_count
 end
@@ -578,16 +571,11 @@ function GameMode:getHighScoreData()
 end
 
 function GameMode:animation(x, y, skin, colour)
-	local p = 0.5
-	local l = (
-		(self.last_lcd - self.lcd) / self.last_lcd
-	)
-	local dx = l * (x - (1 + self.grid.width) / 2)
-	local dy = l * (y - (1 + self.grid.height) / 2)
 	return {
-		1, 1, 1, 1, skin, colour,
-		48 + (x + dx) * 16,
-		(y + dy) * 16 + (464 / (p - 1)) * l * (p - l)
+		1, 1, 1,
+		-0.25 + 1.25 * (self.lcd / self.last_lcd),
+		skin, colour,
+		48 + x * 16, y * 16
 	}
 end