Fix signed overflow in getPointedThing

2012-07-04 15:06:19 -04:00 · 2012-07-04 15:06:19 -04:00 · cc10eec6c6
parent 15bf9a7026
commit cc10eec6c6
1 changed files with 8 additions and 0 deletions
--- a/src/game.cpp
+++ b/src/game.cpp
@ -367,6 +367,14 @@ PointedThing getPointedThing(Client *client, v3f player_position,
 	s16 zend = pos_i.Z + (camera_direction.Z>0 ? a : 1);
 	s16 xend = pos_i.X + (camera_direction.X>0 ? a : 1);
 	
+	// Prevent signed number overflow
+	if(yend==32767)
+		yend=32766;
+	if(zend==32767)
+		zend=32766;
+	if(xend==32767)
+		xend=32766;
+
 	for(s16 y = ystart; y <= yend; y++)
 	for(s16 z = zstart; z <= zend; z++)
 	for(s16 x = xstart; x <= xend; x++)