From b87c644ece766c4d6cd39d4ef4c61c597f82e054 Mon Sep 17 00:00:00 2001
From: Frederic <frederic@localhost.localdomain>
Date: Tue, 27 Dec 2016 15:16:21 +0100
Subject: [PATCH] poor man's drop prevention

---
 ttrs.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ttrs.py b/ttrs.py
index bdb7dbd..7f9a657 100755
--- a/ttrs.py
+++ b/ttrs.py
@@ -338,6 +338,7 @@ class TtrsGame(threading.Thread):
         TICK_TIME = 0.1
         FALL_INTERVAL = 5
         MOVE_INTERVAL = 1
+        DROP_BARRIER = 4
         ticks = 0
         lastfall = 0
         lastmove = 0
@@ -398,7 +399,8 @@ class TtrsGame(threading.Thread):
                             to_add.add(newb)
                     self.playground.blocks.update(to_add)
 
-            if ticks - lastfall >= FALL_INTERVAL or evt == PlayerEvent.DROP:
+            drop = evt == PlayerEvent.DROP and mino.pos.y > DROP_BARRIER
+            if ticks - lastfall >= FALL_INTERVAL or drop:
                 lastfall = ticks
                 try:
                     mino.move(Point(0, 1))