Scratch

I know when I started Scratch, it seemed really confusing. It's not. I'll be posting a simple game here. Lets make it a shooting games with enemies, a stationed gun in the center, and bullets. This first posts will break down and show you the gun script.

Make a new sprite (under the white stage area there is a button to bring up the paint editor). Make your gun and hit OK. Now add this script to it:

<when green flag clicked>
<forever>
<point towards( mouse pointer
<if><key[ space  ]pressed?>
<broadcast[ shoot
<end>
<end>

This will make your gun aim at the mouse pointer (or perpendicular if you drew your gun facing up not to the right). Whenever you press space, you will shoot (once you add the bullet scripts). Now the breakdown:

<when green flag clicked>
<forever>
<end>

So what does that do? Well, that starts your game.

<when green flag clicked>  is when your game is fully loaded in the Java player, or
when you click the green flag in the Scratch program. You need it to start your game/animation

<forever>
<end>        What this is is a forever loop. It is kinda self explanatory. Forever, this will
happen. In this case, it will always point towards your mouse pointer.

<if><key[ space  ]pressed?>
<broadcast[ shoot
<end>                       In a forever loop, this will keep checking whether this is true or
not. If it is true (you press space) you will shoot. What is that broadcast thing there though? Well, think of it like an intercom. When someone talks in an intercom at school, each classroom can hear. In this case, each classroom is a sprite, so you send a message to each sprite. I'll talk about how to hear that message over the intercom later.

Last edited by Bluestribute (2008-08-22 21:18:06)