var dx = mouse_x - x
var dy = mouse_y - y
var len = sqrt(dx*dx + dy*dy)
x += dx / len * sp
y += dy / len * sp
if rectangle_in_circle(bbox_left, bbox_top, bbox_right, bbox_bottom, cx, cy, rad) = 2
     {
     x = xprevious
     y = yprevious
     }

int *number  = (int*) malloc (sizeof (int));
*number  = 10;
free(number);