Void dashedLine(Image img, Int x1, Int y1, Int x2, Int y2, Colour col)
Arguments
img: The imagex1: X coordinate of first endpointy1: Y coordinate of first endpointx2: X coordinate of second endpointy2: Y coordinate of second endpointcol: Colour of the line
Usage
Draws a dashed line on the image from (x1,y1) to (x2,y2).
