Added Big Mode as a piece type. (#20)

Survival A3 and Phantom Mania 2 are now in their fully complete glory! :D

Implements #13.

tetris/rulesets/arika.lua

@@ -16,6 +16,16 @@ ARS.spawn_positions = {
 	Z = { x=4, y=5 },
 }
 
+ARS.big_spawn_positions = {
+	I = { x=2, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=2, y=3 },
+	S = { x=2, y=3 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=3 },
+}
+
 ARS.block_offsets = {
 	I={
 		{ {x=0, y=0}, {x=-1, y=0}, {x=-2, y=0}, {x=1, y=0} },

tetris/rulesets/arika_ti.lua

@@ -16,6 +16,16 @@ ARS.spawn_positions = {
 	Z = { x=4, y=5 },
 }
 
+ARS.big_spawn_positions = {
+	I = { x=2, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=2, y=3 },
+	S = { x=2, y=3 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=3 },
+}
+
 ARS.block_offsets = {
 	I={
 		{ {x=0, y=0}, {x=-1, y=0}, {x=-2, y=0}, {x=1, y=0} },

tetris/rulesets/cambridge.lua

@@ -16,6 +16,16 @@ CRS.spawn_positions = {
 	Z = { x=4, y=4 },
 }
 
+CRS.big_spawn_positions = {
+	I = { x=2, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=2, y=3 },
+	S = { x=2, y=2 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=2 },
+}
+
 CRS.block_offsets = {
 	I={
 		{ {x=0, y=0}, {x=-1, y=0}, {x=-2, y=0}, {x=1, y=0} },

tetris/rulesets/ruleset.lua

@@ -102,12 +102,19 @@ function Ruleset:getDefaultOrientation() return 1 end
 function Ruleset:initializePiece(
 	inputs, data, grid, gravity, prev_inputs,
 	move, lock_delay, drop_speed,
-	drop_locked, hard_drop_locked
+	drop_locked, hard_drop_locked, big
 )
+	local spawn_positions
+	if big then
+		spawn_positions = self.big_spawn_positions
+	else
+		spawn_positions = self.spawn_positions
+	end
 	local piece = Piece(data.shape, data.orientation - 1, {
-		x = self.spawn_positions[data.shape].x,
-		y = self.spawn_positions[data.shape].y
-	}, self.block_offsets, 0, 0, data.skin)
+		x = spawn_positions[data.shape].x,
+		y = spawn_positions[data.shape].y
+	}, self.block_offsets, 0, 0, data.skin, big)
+
 	self:onPieceCreate(piece)
 	self:rotatePiece(inputs, piece, grid, {}, true)
 	self:dropPiece(inputs, piece, grid, gravity, drop_speed, drop_locked, hard_drop_locked)

tetris/rulesets/standard_exp.lua

@@ -18,6 +18,16 @@ SRS.spawn_positions = {
 	Z = { x=4, y=5 },
 }
 
+SRS.big_spawn_positions = {
+	I = { x=2, y=2 },
+	J = { x=2, y=3 },
+	L = { x=2, y=3 },
+	O = { x=2, y=3 },
+	S = { x=2, y=3 },
+	T = { x=2, y=3 },
+	Z = { x=2, y=3 },
+}
+
 SRS.block_offsets = {
 	I={
 		{ {x=0, y=0}, {x=-1, y=0}, {x=-2, y=0}, {x=1, y=0} },