LS_Dracon

New demo relased. First, Atariboy2600, is impossible draw with good looking a DK JR using 8 pixels width... See the image. I can use 16 pixels (using both players), but for a game the second player need be alone, for draw others elements. DK is more easy to do. Rat Pack is not impossible, but you see I lost much resolution. This image is edited in paint program. Ok my new demo is a Color Mixer. Is a tool for you see "news" colors for atari 2600. Using flicker the colors combine and you get a new illusion color. Plus this demo shows a hexadecimal value of each colors. Will be very usefull for me. (Run only in Z26, I don't know why the colors not change in Stella, I need fix this). Press button for new color, and press up/down for change the luminance. Press left or right to select a colors to modify LS_Color_Mixer.bin

SeaGtGruff, this demo is very interesting, try change the luminance of backgrond, and you will see the flicker can be more soft. I start to program my own, but is more simple, just 2 colors mixing to get a third ilusion color. Using this we can get a new rage of colors, never seen before in a 2600 game Andrew Davie, I see this interlancing technique in stella mailing list, a clown demo, but this demo of 3 mario is awsome! There a way for I get more info about interlacing? I realy want understand this.

See the Andrew Davie's tuto at : 2600 Programming For Newbies And good luck

I wish in near future, made a playable demo of Super Mario... I think its possible. Look the different versions of DK Donkey Kong I will start a DK Jr. sprite demo PS : I'm not fan of mario and nintendo... I made this sprites becouse the port of 2600 is terrible! Edit : There one thing that I need to say. As you see, my english are bad, and sometimes lacks me the correct word... I'm not a arrogant person, and don't blame the programmers of dk 2600 port. In early of 80's emulators not exist, paint programs to draw sprites and mouse are inexistent too... And the principal, a site like Stella mailing list. Them made a better that can. The true heroes of videogame!

Tnx all. About flicker or flikering whatever... I use this becouse atari can only display 1 colour for each player (in same line). I don't like flicker sprites (the true I hate) but in real hardware, running on "electron bean tv" this efect is more soft, becouse television keep more time the last frame, I can't test this demo in real hardware, but I now that sprites is more solid. And I discover that you can mix pixels from 2 "layers" to get a third color! In fireball is more visible, this fireball has only 2 colors, but in middle you see a bright colour, is a illusion. The donkey kong skin is a illusion color, if you take a snapshot you will see a yelow skin, but yellow + brown = Skin color. Yep, I mix some colors to made this test. And now 3 colours + black background, I think is possible draw in good resolution black and white images. I accept sugestion for one digitalized image in B&W I think this graphic demo is finished... Suggestion for other classic game to be atarized will welcome too Edit : I don't have a good assembly knowledge yet to do a DK conversion, but don't worry, if you see, I'm one of millions that want a good dk conversion.

Tnx AtariBoy Not so real, but I try more close as possible. This game is very hard to program, don't wait, in future maybe There's a new update, more sprites like princess and that fire thing. Work on Z26 and Stella emulators. dk_s_demo03.bin

You're right, I tested only in Z26. Sorry, my fault But thanks to advice. Fixed! Now works ok on stella too. Tnx, but fantastic is that dragon from Medieval Mayhem, without flicker... Venetian? Sorry I don't understand... you spoke interlaced lines? Like the letter code? Really? cool Or this code aren't efficient I'm still learning... Tanks for all. New version : dk_s_demo02.bin

Hi people I hope demos can be posted here... I'm start do make demos, to get better atari hardware knowledge and programming itself before my first original game. I create this topic for don't need create one topic for every single demo that I finish... So all will post here. At this time I brought to you a Donkey Kong sprite demo. The port of 2600 had sad sprites, so I try make a better looking. I don't know how to use both players at same time and same positioning using 16 bit sprite data (GRP0-RESP0-GRP0, GRP1-RESP1-GRP1?), so I use flickering sprites. See above the image for comparission : 1- Original from arcade 2 - My try 3 - Official port for 2600 (get me sick ) This use 2 colors, 16 bit wide sprite, and a animation. Ah, the white part is a ball hidden behind players What you think? Here's the binary, it's just a graphic demo. (new version at bottom) (Sorry my poor english)

Hi people Sorry the flood, but here's a new version. What's new ? - Diferent angles (changed by player movement, move up and ball get high angle, move down to get lower) - Double speed (hold controller button) - Pause when the point is scored - Color gradient for score numbers What's lack ? (becouse I can't ) - Angle changed by hitting player edge or other position - Sound Fx (not this noise) - Color gradient for players (I don't have space on kernal for it) - The middle vertical line (same problem as above) But this is finished, now I will make some demos, try new things before start to program my first original game. AnotherPong2.zip

Tnx for feedback jbanes. Sub Pixel movement is very complex for me at now, but I'll try increase speed if controller button is pressed. I understand, I will try make diferent angles I think its not possible for now... Sub pixel movement is the key Yes, I forget pause... this will be done in next version. Ok, I will reduce in 4 pixels or more the sprites Also, I will try make a pattern colors for sprites, and change colors for score. I need improve the sound, the true I need make a sound, not that annoyng noise

Hi First all sorry my bad english My name is Ivan and I try to learn some months ago about 2600 programming and assembly. For test my knowledgement, I made a pong game. I think pong is simplest game to do. What's up : Move up or down, and hit the ball, the goal is 11 points. Press game reset switch to reset game anytime or press controller button to restart after "game over". There 2 games in zip, the 2 players version and VsCPU. The VsCPU are bad, I can't made a good AI. This game have a very bad optimised code But works at "high resolution". Works in Z26 and Stella emulators. EDIT : this is the first version, there a new version below AnotherPong.zip

Obrigado por responderem. Terminei o pong, vou postar na parte de homebrew, e disponibilizar o binário para emuladores. Quem quiser testar passa lá.

E ai pessoal, mais um na área. Já conheço o site da AtariAge alguns anos mas só decidi me registrar no fórum agora q vi este tópico em portugues, não sou o único hehehe Eu gostaria que alguém respondesse umas perguntas: O pessoal aqui é tolerante com pessoas que não falam muito bem o ingles? É que tenho dificuldades em escrever, apesar de entender perfeitamente... E queria saber se o pessoal é tolerante também com novatos na programação, pois estou estudando o Atari para fazer alguns jogos. Como teste estou programando um pong. Assim q obter melhores resultados eu vou postando as fotos do Pong-BR, no final deixo o binário pra vcs testarem em emuladores, por enquanto só tem os 2 players q já podem ser movimentados, estou com dificuldades em fazer a bola.