f=instance_nearest(x,y,food)
with(f) {instance_destory()}

{
   if (hspeed == 0)
   {
     if (random(90)<1 && place_free(x-4,y))
       { hspeed = -1; vspeed = 0;}
     if (random(90)<1 && place_free(x+4,y))
       { hspeed =  1; vspeed = 0;}
   }
   else
   {
     if (random(90)<1 && place_free(x,y-4))
       { hspeed = 0; vspeed = -1;}
     if (random(90)<1 && place_free(x,y+4))
       { hspeed = 0; vspeed =  1;}
   }
}

if place_free(x,y+1)   
{
     vspeed=10   
}
else
{
     vspeed=0
}