From 905199cbc2f92591f3126b7edd79d999742483ec Mon Sep 17 00:00:00 2001
From: Ishaan Bhardwaj <59454579+SashLilac@users.noreply.github.com>
Date: Sat, 14 Nov 2020 13:49:58 -0500
Subject: [PATCH] Add Tetra-X from Tetra Legends

---
 tetris/rulesets/tetra.lua | 93 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 tetris/rulesets/tetra.lua

diff --git a/tetris/rulesets/tetra.lua b/tetris/rulesets/tetra.lua
new file mode 100644
index 0000000..df5f390
--- /dev/null
+++ b/tetris/rulesets/tetra.lua
@@ -0,0 +1,93 @@
+local SRS = require 'tetris.rulesets.ti_srs'
+
+local Tetra = SRS:extend()
+
+Tetra.name = "Tetra-X"
+Tetra.hash = "TetraX"
+
+Tetra.colourscheme = {
+	I = "O",
+	L = "Y",
+	J = "B",
+	S = "C",
+	Z = "R",
+	O = "G",
+	T = "M",
+}
+
+Tetra.wallkicks_3x3 = {
+	[0]={
+		[1]={{x=0, y=1}, {x=-1, y=0}, {x=1, y=0}, {x=-1, y=1}, {x=1, y=1}, {x=0, y=-1}, {x=-1, y=-1}, {x=1, y=-1}},
+		[2]={{x=0, y=1}, {x=0, y=-1}, {x=-1, y=0}, {x=1, y=0}},
+		[3]={{x=0, y=1}, {x=1, y=0}, {x=-1, y=0}, {x=1, y=1}, {x=-1, y=1}, {x=0, y=-1}, {x=1, y=-1}, {x=-1, y=-1}},
+	},
+	[1]={
+		[0]={{x=0, y=1}, {x=1, y=0}, {x=-1, y=0}, {x=1, y=1}, {x=-1, y=1}, {x=0, y=-1}, {x=1, y=-1}, {x=-1, y=-1}},
+		[2]={{x=0, y=1}, {x=-1, y=0}, {x=1, y=0}, {x=-1, y=1}, {x=1, y=1}, {x=0, y=-1}, {x=-1, y=-1}, {x=1, y=-1}},
+		[3]={{x=0, y=1}, {x=0, y=-1}, {x=-1, y=0}, {x=1, y=0}},
+	},
+	[2]={
+		[0]={{x=0, y=1}, {x=0, y=-1}, {x=-1, y=0}, {x=1, y=0}},
+		[1]={{x=0, y=1}, {x=1, y=0}, {x=-1, y=0}, {x=1, y=1}, {x=-1, y=1}, {x=0, y=-1}, {x=1, y=-1}, {x=-1, y=-1}},
+		[3]={{x=0, y=1}, {x=-1, y=0}, {x=1, y=0}, {x=-1, y=1}, {x=1, y=1}, {x=0, y=-1}, {x=-1, y=-1}, {x=1, y=-1}},
+	},
+	[3]={
+		[0]={{x=0, y=1}, {x=-1, y=0}, {x=1, y=0}, {x=-1, y=1}, {x=1, y=1}, {x=0, y=-1}, {x=-1, y=-1}, {x=1, y=-1}},
+		[1]={{x=0, y=1}, {x=0, y=-1}, {x=-1, y=0}, {x=1, y=0}},
+		[2]={{x=0, y=1}, {x=1, y=0}, {x=-1, y=0}, {x=1, y=1}, {x=-1, y=1}, {x=0, y=-1}, {x=1, y=-1}, {x=-1, y=-1}},
+	},
+}
+
+Tetra.wallkicks_line = {
+	[0]={
+		[1]={{x=0, y=-1}, {x=0, y=-2}, {x=0, y=1}, {x=1, y=-1}, {x=-1, y=-1}, {x=1, y=-2}, {x=-1, y=-2}},
+		[2]={{x=0, y=-1}, {x=0, y=1}},
+		[3]={{x=0, y=-1}, {x=0, y=-2}, {x=0, y=1}, {x=-1, y=-1}, {x=1, y=-1}, {x=-1, y=-2}, {x=1, y=-2}},
+	},
+	[1]={
+		[0]={{x=0, y=-1}, {x=0, y=-2}, {x=0, y=1}, {x=-1, y=0}, {x=1, y=0}, {x=2, y=0}},
+		[2]={{x=0, y=-1}, {x=0, y=-2}, {x=0, y=1}, {x=-1, y=0}, {x=1, y=0}, {x=2, y=0}},
+		[3]={{x=0, y=-1}, {x=0, y=1}},
+	},
+	[2]={
+		[0]={{x=0, y=-1}, {x=0, y=1}},
+		[1]={{x=0, y=1}, {x=0, y=2}, {x=0, y=-1}, {x=-1, y=1}, {x=1, y=1}, {x=-1, y=2}, {x=1, y=2}},
+		[3]={{x=0, y=1}, {x=0, y=2}, {x=0, y=-1}, {x=1, y=1}, {x=-1, y=1}, {x=1, y=2}, {x=-1, y=2}},
+	},
+	[3]={
+		[0]={{x=0, y=-1}, {x=0, y=-2}, {x=0, y=1}, {x=1, y=0}, {x=-1, y=0}, {x=-2, y=0}},
+		[1]={{x=0, y=-1}, {x=0, y=1}},
+		[2]={{x=0, y=-1}, {x=0, y=-2}, {x=0, y=1}, {x=1, y=0}, {x=-1, y=0}, {x=-2, y=0}},
+	},
+}
+
+function Tetra:attemptWallkicks(piece, new_piece, rot_dir, grid)
+
+	local kicks
+	if piece.shape == "O" then
+		return
+	elseif piece.shape == "I" then
+		kicks = Tetra.wallkicks_line[piece.rotation][new_piece.rotation]
+	else
+		kicks = Tetra.wallkicks_3x3[piece.rotation][new_piece.rotation]
+	end
+
+	assert(piece.rotation ~= new_piece.rotation)
+
+	for idx, offset in pairs(kicks) do
+		kicked_piece = new_piece:withOffset(offset)
+		if grid:canPlacePiece(kicked_piece) then
+			piece:setRelativeRotation(rot_dir)
+			piece:setOffset(offset)
+			self:onPieceRotate(piece, grid)
+			return
+		end
+	end
+
+end
+
+function Tetra:onPieceMove() end
+function Tetra:onPieceRotate() end
+function Tetra:get180RotationValue() return 2 end
+
+return Tetra
\ No newline at end of file