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--- data.c.orig 2013-11-17 11:25:40.820307151 +0400
+++ data.c 2013-11-17 11:27:32.743383408 +0400
@@ -460,7 +460,7 @@
my_double can_go_x(my_double old_x,my_double new_x,int yh, int yl,unsigned char *flag)
{
int x,y;
-
+ if (yh<0) yh=0;
if (old_x==new_x+.5)
{
if(flag)*flag=0;
@@ -494,7 +494,7 @@
my_double can_go_y(my_double old_y, my_double new_y,int xl, int xr,unsigned char *flag,unsigned char down_ladder)
{
int x,y;
-
+ if (xl<0) xl=0;
if (old_y==new_y){if(flag)*flag=0;return new_y;}
if(flag)*flag=1;
if (old_y<new_y)
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