var start[2];
var end[2];

function drawline_sample_startup() 
{ 
	mouse_mode = 4;
	int draw = 0;
	while (1) 
	{ 
		draw_line (start,vector(0,0,255),100);
		draw_line (end,vector(0,0,255),100);
		
		if (mouse_left == 1)
		{
			start[0] = mouse_pos.x;
			start[1] = mouse_pos.y;			
			draw=1;
		}

		if (draw == 1)
		{
			end[0] = mouse_pos.x;
			end[1] = mouse_pos.y;	
			
			if (mouse_right == 1)	
			{
				draw=0;			
			}
		}
		wait (1);
	}
}