From f7c4908062aa6df091083b5c02edc5dcc31e93d3 Mon Sep 17 00:00:00 2001
From: Ishaan Bhardwaj <sashlilac109@gmail.com>
Date: Mon, 14 Dec 2020 22:43:50 -0500
Subject: [PATCH] Added an option to disable diagonal input

---
 scene/game_config.lua     |  3 ++-
 tetris/modes/gamemode.lua | 10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/scene/game_config.lua b/scene/game_config.lua
index ea91b11..2f56854 100644
--- a/scene/game_config.lua
+++ b/scene/game_config.lua
@@ -11,7 +11,8 @@ ConfigScene.options = {
 	{"world_reverse","A Button Rotation", {"Left"				 ,"Auto"		,"Right"}},
 	{"next_se", "Next Piece SFX", {"On", "Off"}},
 	{"das_last_key", "DAS Switch", {"Default", "Instant"}},
-	{"synchroes_allowed", "Synchroes", {"Per ruleset", "On", "Off"}}
+	{"synchroes_allowed", "Synchroes", {"Per ruleset", "On", "Off"}},
+	{"diagonal_input", "Diagonal Input", {"On", "Off"}}
 }
 local optioncount = #ConfigScene.options
 
diff --git a/tetris/modes/gamemode.lua b/tetris/modes/gamemode.lua
index 1cce7a1..078ff72 100644
--- a/tetris/modes/gamemode.lua
+++ b/tetris/modes/gamemode.lua
@@ -100,6 +100,16 @@ function GameMode:update(inputs, ruleset)
 	end
 	if self.completed then return end
 
+	if config.gamesettings.diagonal_input == 2 then
+		if inputs["left"] or inputs["right"] then
+			inputs["up"] = false
+			inputs["down"] = false
+		elseif inputs["up"] or inputs["down"] then
+			inputs["left"] = false
+			inputs["right"] = false
+		end
+	end
+
 	-- advance one frame
 	if self:advanceOneFrame(inputs, ruleset) == false then return end