From 869e500da83564adda7a40eb0dee7efbb8ff909c Mon Sep 17 00:00:00 2001
From: Ishaan Bhardwaj <sashlilac109@gmail.com>
Date: Sun, 10 Jan 2021 11:03:12 -0500
Subject: [PATCH] Shirase Rotation System

---
 tetris/rulesets/shirase.lua | 72 +++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 tetris/rulesets/shirase.lua

diff --git a/tetris/rulesets/shirase.lua b/tetris/rulesets/shirase.lua
new file mode 100644
index 0000000..016cef2
--- /dev/null
+++ b/tetris/rulesets/shirase.lua
@@ -0,0 +1,72 @@
+local SRS = require 'tetris.rulesets.standard_exp'
+
+local Shirase = SRS:extend()
+
+Shirase.name = "Shirase RS"
+Shirase.hash = "Shirase"
+Shirase.world = false
+
+Shirase.colourscheme = {
+    I = "R",
+    J = "R",
+    L = "R",
+    O = "R",
+    S = "R",
+    T = "R",
+    Z = "R"
+}
+
+Shirase.block_offsets = {
+    I={
+        { {x=-2, y=0}, {x=-1, y=0}, {x=0, y=0}, {x=1, y=0} },
+        { {x=1, y=-2}, {x=1, y=-1}, {x=1, y=0}, {x=1, y=1} },
+        { {x=0, y=1}, {x=1, y=1}, {x=2, y=1}, {x=3, y=1} },
+        { {x=0, y=0}, {x=0, y=1}, {x=0, y=2}, {x=0, y=3} },
+    },
+    J={
+        { {x=-1, y=-1}, {x=-1, y=0}, {x=0, y=0}, {x=1, y=0} },
+        { {x=1, y=-2}, {x=2, y=-2}, {x=1, y=-1}, {x=1, y=0} },
+        { {x=1, y=0}, {x=2, y=0}, {x=3, y=0}, {x=3, y=1} },
+        { {x=1, y=0}, {x=1, y=1}, {x=0, y=2}, {x=1, y=2} },
+    },
+    L={
+        { {x=1, y=-1}, {x=-1, y=0}, {x=0, y=0}, {x=1, y=0} },
+        { {x=1, y=-2}, {x=1, y=-1}, {x=1, y=0}, {x=2, y=0} },
+        { {x=1, y=0}, {x=2, y=0}, {x=3, y=0}, {x=1, y=1} },
+        { {x=0, y=0}, {x=1, y=0}, {x=1, y=1}, {x=1, y=2} },
+    },
+    O={
+        { {x=-1, y=-1}, {x=0, y=-1}, {x=-1, y=0}, {x=0, y=0} },
+        { {x=0, y=-2}, {x=1, y=-2}, {x=0, y=-1}, {x=1, y=-1} },
+        { {x=1, y=-1}, {x=2, y=-1}, {x=1, y=0}, {x=2, y=0} },
+        { {x=0, y=0}, {x=1, y=0}, {x=0, y=1}, {x=1, y=1} },
+    },
+    S={
+        { {x=0, y=-1}, {x=1, y=-1}, {x=-1, y=0}, {x=0, y=0} },
+        { {x=1, y=-2}, {x=1, y=-1}, {x=2, y=-1}, {x=2, y=0} },
+        { {x=2, y=0}, {x=3, y=0}, {x=1, y=1}, {x=2, y=1} },
+        { {x=0, y=0}, {x=0, y=1}, {x=1, y=1}, {x=1, y=2} },
+    },
+    T={
+        { {x=0, y=-1}, {x=-1, y=0}, {x=0, y=0}, {x=1, y=0} },
+        { {x=1, y=-2}, {x=1, y=-1}, {x=2, y=-1}, {x=1, y=0} },
+        { {x=1, y=0}, {x=2, y=0}, {x=3, y=0}, {x=2, y=1} },
+        { {x=1, y=0}, {x=0, y=1}, {x=1, y=1}, {x=1, y=2} },
+    },
+    Z={
+        { {x=-1, y=-1}, {x=0, y=-1}, {x=0, y=0}, {x=1, y=0} },
+        { {x=2, y=-2}, {x=1, y=-1}, {x=2, y=-1}, {x=1, y=0} },
+        { {x=1, y=0}, {x=2, y=0}, {x=2, y=1}, {x=3, y=1} },
+        { {x=1, y=0}, {x=0, y=1}, {x=1, y=1}, {x=0, y=2} },
+    }
+}
+
+function Shirase:onPieceDrop(piece) piece.lock_delay = 0 end
+function Shirase:onPieceMove(piece) piece.lock_delay = 0 end
+function Shirase:onPieceRotate(piece) piece.lock_delay = 0 end
+
+function Shirase:getDefaultOrientation()
+    return math.random(4)
+end
+
+return Shirase
\ No newline at end of file