Scratch

There IS sprite duplication you know. Just hold down ctrl or alt and click a sprite in the list below the stage.

Colkadome wrote:

There IS sprite duplication you know. Just hold down ctrl or alt and click a sprite in the list below the stage.

What I mean, is that I want a way to duplicate sprites using code. Even though the copy tool help you make copies of a single sprite it is still a pain when you want 100 similar sprites in your project especially when each of these sprites need slight adjustments . There should be some sort of clone block.

It should be similar to this actionscript code

duplicateMovieClip(target, newname="", depth);

Say there is an enemy named baddie I want to duplicate. Then I use this code.

duplicateMovieClip(_root.baddie, "baddie"+i, i);

If the i variable is equal to 1 then my new sprite will be named baddie1. Then if I want I can change the properties of that sprite with the following code.

//change x cordinate
_root.baddie1._x= Math.random()*Stage.width;

Last edited by archmage (2008-07-26 02:47:38)

deatheater wrote:

do u mean like how flash can duplicate

Kinda, it would need to be easier to work with though. I edited my earlier post to show what I mean better.

deatheater wrote:

so the sprites could duplicate in gameplay?

I suppose you could put it that way. It doesn't have to be a game to have duplicated sprites though.

It really is essential though. Can you think of a way to make a game like desktop tower defense in scratch? I honestly don't think this is possible because you would need tons of sprites (200+ maybe). Firstly, making 200+ sprites would greatly increase the overall file size of the project and secondly, you would probably need to adjust each sprite individually instead of with code (like I demonstrated in my flash example) which would take a ton of time.

Lol, this is a great idea. greenfoot has it, and I saw its capabilities. With something like that, games you could be two times bigger with much less lag. It also allows you create great simulations, and I defenitely agree with archmage.

dbal wrote:

newareagle wrote:

Lol, this is a great idea. greenfoot has it, and I saw its capabilities. With something like that, games you could be two times bigger with much less lag. It also allows you create great simulations, and I defenitely agree with archmage.

To see sprite duplication at runtime in action go to http://greenfootgallery.org/scenarios/181

Click Run to start the program running.  Then click anywhere in the world to see all of the live spiders reproduce.

Yeah ive seen it, and the Scratch Version by Paddle2See. Both are great 

I have often thought about what cool things I could do if I could clone sprites! I'm salivating again...

To play devil's advocate though, there are some serious things to consider when you think about enabling programmatic cloning of sprites. I'll give just one example for now.

Memory issues. It would be ridiculously easy to "crash" Scratch by putting a clone block in a forever loop. Your stage would quickly be overrun by sprites and eventually cause everything to slow down to the point of unusability. A less drastic example is probably more illustrative: if you create some kind of game, you might be confused as to why it works too slowly without realizing that you created hundreds of clones without deleting them (maybe just hiding when they're "destroyed" in the game, rather than actually killing the sprites). This means that Scratchers who use clone are also going to have to worry about memory management (getting rid of things that are no longer used), which can be a difficult concept.

I made a post similar to this,called,"A new pen block?",which is basically is about wanting to have a sprite duplication block to perform several functions in scratch,particularly TD(Tower Defense)games and games that require multiple enemies.

There could be an extremely laggy way to code it. Have lists for X Y and Direction. And after you duplicate the sprite, it would stamp each duplicate using the X, Y and Direction from the list. It would take a while, though it might work.

Sprite duplication itself is probably an easier way.


The reason I say extremely laggy is because I've done it before.

Last edited by TimeFreeze (2009-08-20 10:41:01)

Zscratchy wrote:

ANYONE Please notify ZScratchy if in program cloning (duplicating) becomes available.

Thanks

the last topic on this thread is about 3 years old - commenting in these threads is called necroposting and should be avoided

meanwhile the information here is outdated