Page 346 - Making things move_ DIY mechanisms for inventors, hobbyists, and artists

Chapter 10 Projects 323

case 2: //go down
if((totalHeight - randomDistance) > 0)
{
down(randomDistance);
totalHeight -= randomDistance;
}
break;

case 3: //go left
if((totalWidth - randomDistance) > 0)
{
left(randomDistance);
totalWidth -= randomDistance;
}
break;

case 4: //go right
if((totalWidth + randomDistance) < CANVASWIDTH)
{
right(randomDistance);
totalWidth += randomDistance;
}
break;
case 5: //go upRight
if(((totalWidth + randomDistance) < CANVASWIDTH) && ((totalHeight
+ randomDistance) < CANVASHEIGHT))
{
upRight(randomDistance);
totalWidth += randomDistance;
totalHeight += randomDistance;
}
break;

case 6: //go upLeft
if(((totalWidth - randomDistance) > 0) && ((totalHeight +
randomDistance) < CANVASHEIGHT))
{
upLeft(randomDistance);
totalWidth -= randomDistance;
totalHeight += randomDistance;
}
break;