46 replies to this topic

[Atarius Maximus]

I've had a few requests via private mail to help people out who are trying to learn bB, along with requests for code examples.  I thought I'd post some very simple, short programs that demonstrate how to do some specific things in bB.   I always learn best by looking at sample code... hopefully these will help someone out.  I'd be happy to create additional examples if someone wants one.

Steve

Attached Files

•  1_DrawSprite.bas   1.79K   1360 downloads
•  1_DrawSprite.bin   4K   605 downloads
•  2_AddPlayfield.bas   2.67K   816 downloads
•  2_AddPlayfield.bin   4K   495 downloads
•  3_MoveASprite.bas   2.11K   739 downloads
•  3_MoveAsprite.bin   4K   452 downloads
•  4_FireAMissile.bas   812bytes   764 downloads
•  4_FireAmissile.bin   4K   511 downloads
•  5_AnimateASprite.bas   843bytes   697 downloads
•  5_AnimateASprite.bin   4K   514 downloads
•  6_AnimateAplayfield.bas   1.72K   652 downloads
•  6_AnimateAplayfield.bin   4K   571 downloads
•  7_3DMovingSprite.bas   835bytes   688 downloads
•  7_3DMovingSprite.bin   4K   496 downloads
•  9_DetectCollisions.bas   2.45K   761 downloads
•  9_Detectcollisions.bin   4K   581 downloads
•  8_FlashColors.bin   4K   604 downloads
•  8_FlashColors.bas   250bytes   650 downloads
•  10_MoveAnAnimatedSprite.bas   3.26K   607 downloads
•  10_MoveAnAnimatedSprite.bas.bin   4K   441 downloads
•  11_AdventureLight.bas   5.9K   577 downloads
•  11_AdventureLight.bin   4K   422 downloads
•  12_SimpleTitlescreenDemo.bas   3.52K   607 downloads
•  12_SimpleTitlescreenDemo.bin   4K   440 downloads
•  13_BankswitchingDemo.bas   4.92K   419 downloads
•  13_BankswitchingDemo.bin   16K   324 downloads
•  14_MoveAnimateAndFire.bas   8.26K   445 downloads
•  14_MoveAnimateAndFire.bin   4K   381 downloads
•  15_MoveSpritewithPlayfieldBoundaries.bas   1.1K   525 downloads
•  15_MoveSpritewithPlayfieldBoundaries.bin   4K   390 downloads
•  16_MoveSpritewithEnemySpriteFollowing.bas   2.82K   89 downloads
•  16_MoveSpritewithEnemySpriteFollowing.bin   4K   78 downloads

Edited by Atarius Maximus, Wed Oct 31, 2012 7:47 AM.

[Impaler_26]

Thanks for those nice examples!!!

They'll sure be useful for me when i get off my lazy butt and continue work on my game one day  

[batari]

Great idea!  I will pin this topic.  If anyone knows of other good examples scattered around the forum, maybe they can be mirrored here.  Or if anyone has requests, post 'em up.

[Nognir]

Thanks for this lot of binaries and source codes!

Finally I made my title screen working  
Hope that I can get something done in a few weeks

[freehabitat]

Hi there,..

i have a problem with connecting the moving sprite sample with the animated sprite sample,....

can anyone post the code, it would help so much!

thnx

[SeaGtGruff]

freehabitat, on Fri Nov 2, 2007 5:25 PM, said:

Hi there,..

i have a problem with connecting the moving sprite sample with the animated sprite sample,....

can anyone post the code, it would help so much!

thnx

Do you mean how to move an animated sprite?

Michael

[freehabitat]

HI,.. sorry for my bad english.

yes, i mean how to move a animated Sprite.


and i also want to know how to programm diferent "layers", like a intro,... main part..., outro... credits....

oh, so many other questions, i will post them little by little if i cant find any conclution.


thanx!!

[SeaGtGruff]

freehabitat, on Fri Nov 2, 2007 7:42 PM, said:

HI,.. sorry for my bad english.

yes, i mean how to move a animated Sprite.

Your English is fine. I was 98% certain that was what you meant, but my real reason for asking was because I wasn't at home when I was reading the posts, and that meant your question wouldn't show up under "View New Posts" when I did get home later. I wanted to post *something* in the thread so it would show up under "My Posts" when I got home, to remind myself that I intended to reply to you. I could have just posted something like "I'll check on it later," but instead I decided to ask for verification of what you wanted, just to be certain. So don't worry about your English!

Michael

[SeaGtGruff]

Okay, here's a sample that combines "3_MoveASprite.bas" with "5_AnimateASprite.bas." I think perhaps the reason you were having trouble combining them is because they both use variable y, but they use y for two different things.

There are two ways this new sample can be improved-- (1) animate the sprite only when it's being moved around with the joystick; and (2) have the sprite face in the opposite direction if it's being moved right-to-left. But those can be for later.

Michael

Attached Files

•  10_MoveAnAnimatedSprite.bas   3.26K   327 downloads
•  10_MoveAnAnimatedSprite.bas.bin   4K   309 downloads

[freehabitat]

Thanx, that helps a lot!

what i still did not understand is your reply of the other question with going to other Levels (goto different Playfields if something happenes).

anyway... in next time i´ll try to work with combinations of the samples in this tread. Its my problem that i do not exactly know how to use
lot of different actions in on programm.

i look forward to create new samples with your help, that would be very helpfull for the other new programmers here.
for me it´s the best way to learn, looking at other peoples programs and putting out special events i like to use.

thanx so far,..

Tom

[Dan Iacovelli]

I recongize the playfield sample,I asked the question for that for my game I'm working on.
Also the animate sprite sample helped me alot with my game.

[Atarius Maximus]

SeaGtGruff, on Fri Nov 2, 2007 11:52 PM, said:

Okay, here's a sample that combines "3_MoveASprite.bas" with "5_AnimateASprite.bas." I think perhaps the reason you were having trouble combining them is because they both use variable y, but they use y for two different things.

There are two ways this new sample can be improved-- (1) animate the sprite only when it's being moved around with the joystick; and (2) have the sprite face in the opposite direction if it's being moved right-to-left. But those can be for later.

Michael

I've updated the first post with your additions, Michael.   I'll keep doing that when new samples are posted.

Cheers!

Steve

[freehabitat]

Atarius Maximus, on Mon Nov 5, 2007 4:25 PM, said:

I've updated the first post with your additions, Michael.   I'll keep doing that when new samples are posted.

Cheers!

Steve

fine,.. so i can continue with my patchwork programming,.. that helps a lot at the begin,..


thanx tom

Edited by freehabitat, Mon Nov 5, 2007 5:42 PM.

[Fort Apocalypse]

In addition to examples, there is a great reference here that batari wrote and Random Terrain maintains:
http://www.randomter...c-commands.html

[Fort Apocalypse]

Link to the easter egg Michael found about shakescreen since it has a code sample for how to shake the screen.

[yuppicide]

I looked at your animated playfield code. You have this:

 x=10 : rem Counter number - when to switch to frame 2
 y=20 : rem Counter number - when to switch to frame 3
 z=30 : rem Counter number - when to switch to frame 4


main

 COLUPF=28
 COLUBK=0

 b=b+1
 
 if b>30 then b=0

 if b=x then goto frame1
 if b=y then goto frame2
 if b=z then goto frame3

ETC, ETC

Wouldn't it be better to just to this?

main

 COLUPF=28
 COLUBK=0

 b=b+1
 
 if b>30 then b=0

 if b=10 then goto frame1
 if b=20 then goto frame2
 if b=30 then goto frame3

ETC, ETC

I don't know if it saves you any ROM, but this way you're not wasting variables.

[SeaGtGruff]

yuppicide, on Wed Jul 23, 2008 12:53 PM, said:

I looked at your animated playfield code. You have this:

The only reason I can think of for using variables is to make the code more reusable within the program-- for example, if you want to speed up or slow down the animation rate by changing the values in the variables. Otherwise, constants help save RAM (which-- on the Atari 2600-- is more important than saving ROM, since RAM is more precious than ROM).

Michael

[Atarius Maximus]

SeaGtGruff, on Wed Jul 23, 2008 7:27 PM, said:

yuppicide, on Wed Jul 23, 2008 12:53 PM, said:

I looked at your animated playfield code. You have this:

The only reason I can think of for using variables is to make the code more reusable within the program-- for example, if you want to speed up or slow down the animation rate by changing the values in the variables. Otherwise, constants help save RAM (which-- on the Atari 2600-- is more important than saving ROM, since RAM is more precious than ROM).

Michael

That is exactly why I did it - to allow for changing the animation rate.  I suppose it wasn't necessary for the sample program, yuppicide's revision would work fine too.

Steve

[yuppicide]

Didn't think of that. Thanks. Good idea.

Atarius Maximus, on Fri Jul 25, 2008 12:27 PM, said:

That is exactly why I did it - to allow for changing the animation rate.  I suppose it wasn't necessary for the sample program, yuppicide's revision would work fine too.

Steve

[yuppicide]

One thing we should do with the first post is make everything the same. Am I nitpicking? Unfortunately yes.

Everything code snippet has two files with it. First one being .bas, and second being .bin. Except number 8. It's backwards. First is .bin. Not a big deal, but I couldn't find 8 to load in bB and I swore I downloaded it lol.

Second, number 10 is named .bas.bin when every other one is .bin.

Anyway, nice tutorials. I enjoyed them. I think there should be one for how to insert simple background music and one how to insert a sound effect. I'll be able to manage just fine I am sure, but still would be nice to read a tut. Thanks again for the tutorials!

[yuppicide]

Here's my own code snippet. I was fooling around and thought maybe somebody could make some use of this.

In this I show you how to use two player sprites combined to make one big player sprite.

Attached Files

•  large_player_demo.bas   3.13K   331 downloads
•  large_player_demo.bas.bin   4K   399 downloads

[Atarius Maximus]

I added another sample program to the first post.  It's a sample program that shows how to make the 'light' sprite around your character to move around an invisible maze, just like the mazes in the original Adventure game.

Thanks,

Steve

[Atarius Maximus]

One more sample was added to the first post, by request:  12-SimpleTitlescreenDemo.bas.  It shows how to make a simple titlescreen.  From the titlescreen, press fire to start the game.  

Steve

[RevEng]

One more example for the pot - how to use shared sprite data for player0 and player1.


 13_SharedSpriteData.bas   5.16K   305 downloads
 13_SharedSpriteData.bas.bin   4K   302 downloads

(edit - fixed up the comments a bit)

Attached Files

•  13_SharedSpriteData.bas   5.21K   295 downloads

Edited by RevEng, Sun May 31, 2009 11:25 AM.

[Animan]

Can anyone show me how to make a scrolling playfield?