February 2014
Intermediate to advanced
330 pages
7h 11m
English
Content preview from Scratch 2.0 Game Development HotshotBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Fighting back
So we can now place cannons that shoot cannonballs in the direction of the mouse cursor. But we still aren't hitting any enemies. Let's quickly fix that problem.
Engage thrusters
We will check when a cannonball and an enemy collide and take proper action accordingly. The steps to do it are as follows:
- Inside the cannonball, clone repeat, and place an if … then condition block to check collisions.
- Check for collisions by using the touching <enemy> block.
- When a cannonball touches an enemy, first wait for
0.05seconds by using the wait ... secs block. This is to ensure that the enemy has time to respond to the collision as well. - Then we add a delete this clone block to delete the clone.
So cannonballs will not only expire after having traveled ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.