From be7e5e4b41461de14c705386c44b40505700bdfe Mon Sep 17 00:00:00 2001
From: MetalliC <0vetal0@gmail.com>
Date: Mon, 3 Oct 2016 20:58:58 +0300
Subject: [PATCH] bit better collision (nw)

---
 src/mame/drivers/istrebiteli.cpp | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/mame/drivers/istrebiteli.cpp b/src/mame/drivers/istrebiteli.cpp
index 6563a6993a3..69ca5f67d1d 100644
--- a/src/mame/drivers/istrebiteli.cpp
+++ b/src/mame/drivers/istrebiteli.cpp
@@ -306,10 +306,13 @@ CUSTOM_INPUT_MEMBER(istrebiteli_state::collision_r)
 	// real hardware does per-pixel sprite collision detection
 	int id = *(int*)&param * 2;
 
-	int sx = m_spr_xy[4 + id];
-	int sy = m_spr_xy[5 + id];
-	int px = m_spr_xy[2 - id] + 3;
-	int py = m_spr_xy[3 - id] + 3;
+	int sx = m_spr_xy[5 + id];
+	int sy = m_spr_xy[4 + id];
+	int px = m_spr_xy[3 - id] + 3;
+	int py = m_spr_xy[2 - id] + 3;
+
+	if (sx < 56)
+		return 0;
 
 	if (px >= sx && px < (sx + 8) && py >= sy && py < (sy + 8))
 		return 1;