From eae58f11e9f132a63d3e8dacb2c2891f43772918 Mon Sep 17 00:00:00 2001
From: Ishaan Bhardwaj <sashlilac109@gmail.com>
Date: Sun, 21 Feb 2021 10:05:09 -0500
Subject: [PATCH] Fixed a clipping issue with negative gravity Gamemodes are
 able to define their own piece class behavior to override negative gravity
 handling

---
 tetris/components/piece.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tetris/components/piece.lua b/tetris/components/piece.lua
index 5a227c5..6d0c592 100644
--- a/tetris/components/piece.lua
+++ b/tetris/components/piece.lua
@@ -126,7 +126,9 @@ function Piece:addGravity(gravity, grid, classic_lock)
 			self.gravity = 0
 			self.lock_delay = self.lock_delay + 1
 		end
-	else
+	elseif not (
+		self:isMoveBlocked(grid, { x=0, y=-1 }) and gravity < 0
+	) then
 		local dropped_squares = math.floor(math.abs(new_gravity))
 		local new_frac_gravity = new_gravity - dropped_squares
 		self.gravity = new_frac_gravity
@@ -142,6 +144,8 @@ function Piece:addGravity(gravity, grid, classic_lock)
 			self.gravity = new_frac_gravity
 			self:moveInGrid({ x = 0, y = -1 }, dropped_squares, grid)
 		end
+	else
+		self.gravity = 0
 	end
 	return self
 end