Misifu la gatita (alley cat demake)

[jordi]

DOWNLOAD
jbinary.itch.io/misifu

Link a Loveretro: loveretro.es/juegos/detalle/misifu-la-gatita

Why?
----
Demake of: Alley Cat. Using also CGA palette

Demake de: Alley Cat
Un chico ruso empezó el juego, pero nunca lo terminó, así que también es un MIA.

A russian guy started it, and never finished, so somehow it's a MIA


Why misifu?
First, the original, GREAT AND ORIGINAL game Alley Cat is what it is, and I have to give it a respect. Second, nowadays my daughter asks me why most of the game heroes are 'males'. Third, because misifu is a very affectionate way of calling a cat in Spain, my grandma did it so often.

The name might sound like a Microhobby amateur basic demo, and might be able to enter into the crap games competition, but it's here 

HISTORY AND INSTRUCTIONS:

La pérrada ha raptado a Fred, y sólo lo liberará si destrozas las habitaciones del edificio del propietario del banco que ha deshauciado a sus amigos. ¿Cómo lo harás? Como ya sabes, ¡a lo gatuno, misifu!

The dogad has kidnapped Fred, and they will only free him if you destroy the rooms of a building. This building belongs to the bank that evicted 'dogad' friends. How do you do it? Just be a cat, misifu!!

Controls: OPQA SPACE (0 = pause)
Controls: Kempston is supported.

- Alley. intenta saltar en una ventana, pero cuidado con el perro ya que intentará morderte y quitarte una vida!
- Queso. Intenta comerte todos los ratones. Algunos agujeros están conectados si pulsas espacio, tendrás que descubrir cuáles.
- Pecera. Entra en la pecera saltando sobre ella desde más arriba. Dentro de la pecera: cómete todos los peces, pero cuidado con las anguilas electricas y el oxígeno.
- Estantería. Rompe los jarrones de la estanteria, pero cuidado con la araña... y como siempre, el perro!
- Jaula/pajaro. Tira la jaula, cómete el pájaro y ojo con el perro.
- Perros durmiendo. Presiona espacio en los bebederos, pero cuidado con tocar a los perros tres veces, o los levantarás... y ya sabemos que eso no acaba bien.
- Corazones. Este es el último nivel, y el más dificil. Consigue llegar a lo más arriba y rescatarás a Fred, para ver el final.
El juego empezará de nuevo en el callejón.

aunque se abran distintas ventanas... hasta que no superes un nivel, no podrás acceder al siguiente.

- Alley. Try to jump inside a window, but be aware of the dog, he will try to bite you and take a live.
- Cheese. Try to eat ALL the mousies. Some holes are connected if you press space, just discover them
- Fishtank. Enter inside fishtank jumping inside it. Inside fishtank: eat all fishes but be aware of eels and oxygen.
- Bookself. Destroy the vases in the bookself, but be aware of the spider, and the dog!
- Bird. Throw the birdcage, eat the bird!
- Sleeping dogs. Press space when on drinkers, be aware of touching them three times, or you'll awake them... and that's not ending so well.
- Hearts. That's the last level and thus the most difficult. Reach the topmost without falling and you'll rescue Fred and see the ending.
Game will restart from Alley after hearts.

you won't be able to access next level until current one is completed, nevermind on which window was hit.

Portuguese

Controles: OPQA / Kempston (0 = pausa)

- Ruela. Tenta pular por uma janela, mas cuidado com o cão que tentará tirar-te a vida!
- Queijo. Tenta comer todos os ratos. Alguns buracos estão conectados entre si, terás que descobrir quais.
- Aquário. Entra no aquário, saltando de cima. Dentro do aquário: come todos os peixes, mas cuidado com as enguias elétricas e com o oxigénio.
- Estante. Quebra os jarros da estante, mas cuidado com a aranha... E como sempre, com o cão!
- Gaiola/Pássaro. Quebra a gaiola, come o pássaro e cuidado com o cão.
- Cães a dormir. Pressiona a tecla de “espaço” nos bebedouros, mas cuidado para não tocares os cães três vezes ou irás acordá-los... E já sabemos que isso não termina bem.
- Corações. Este é o último nível e o mais difícil. Tenta chegar o mais alto possível e salvar Fred para ver o final. O jogo começa então novamente na ruela.

Apesar de se abrirem diferentes janelas... Só após terminares este nível, poderás passar ao próximo.

Russian (thanks Alexey!)

Догад похитил Фреда, и они освободят его, только если вы уничтожите комнаты здания. Это здание принадлежит банку, который выселит друзей Догада. Как ты сделаешь это? Просто будь кошкой, Мисифу !!

Управление: OPQA SPACE / Kempston (0 = пауза)

Аллея. Попробуйте прыгнуть в окно, но будьте внимательны с собакой, она постарается вас укусить и съесть.
Сыр. Попробуйте съесть всех мышей. Некоторые отверстия связаны, если вы нажмете пробел, то откроете их.
Аквариум. Войдите в аквариум, прыгнув в него. Внутри аквариума ешьте всех рыб, но помните о угрях и кислороде.
Книжная полка. Уничтожьте вазы на книжной полке, но будьте осторожны с пауком и собакой!
Птица. Сбрось птичью клетку и съешь птицу!
Спящие собаки. Нажимайте пробел, когда стоите на поилках, будьте внимательны, касаясь их. Если ты коснёшься их трижды, то разбудешь их … и это не так хорошо заканчивается.
Сердца. Это последний уровень и, следовательно, самый сложный. Доберитесь до самого верха, не упав, и вы спасете Фреда и увидите конец. Игра перезапустится с Аллеи после комнаты с сердцами.
Вы не сможете получить доступ к следующему уровню, пока не закончите текущий, неважно, в какое окно вы вошли.

 

Last update: (1/March): Release 1.4.

Descarga / Download:

jbinary.itch.io/misifu

github.com/jsmolina/speccy-misifu/releases

misifu.tap
misifu48k.tap
(Release 1.4.1, fixed sinclair joystick, using sinclair2)

Algunos Pantallazos / screenshots

Some youtube videos that game appeared:

Modern ZX-Retro Gaming (first walkthrough!)
www.youtube.com/watch?v=2TCfAb7khP4&app=desktop

Arnau Jess
www.youtube.com/watch?v=JFjiWd7ziHM

Javi Ortiz
youtu.be/iBZ9AfL0jOo?t=161

Game running on a real +2A (mine)
www.youtube.com/watch?v=v-mvxf3EnuI

Press references

• idpixel.ru/news/1613-remejk-alley-cat-dlja-zx-spectrum-doshel-do-stadii-alfy/
  
• www.indieretronews.com/2019/01/alley-cat-ataridos-cat-classic-as-128k.html?&fbclid=IwAR0591Jd0-5rJiN0v3USjmDnAUsBFHzesYJykhCQXtcHl9yvnhG0GGagOb0

spectrumcomputing.co.uk/index.php?cat=96&id=34730&fbclid=IwAR1digySV8dK-Wgt4IQSbWX593FdzRGpxfXko7Jbo2IGnbWFaWslRzcl7c0

zxonline.net/game/misifu-la-gatita/

Source github.com/jsmolina/speccy-misifu

[Admin]

Welcome here, Jordi! A pleasure to have you in the Dev, and for your first game, the mega classic Alley Cat! I have very very fond memories of this game as I used to play it a lot. There is still plenty of time to code, until March, and Im sure you will manage, and as you said, if any expert wants to lend a hand, they are also welcome
Please let us now with your advances, if you wish, of course!

By the way, funny name you choose! So now you have to rescue your cat-boyfriend, right?

[jordi]

Hello,

I was wondering I could migrate it to SP1 library and have easier sprite management.

I have to say that It's like an inferno! There's lot of contradicting documentation, I guess by the version changes

I was trying to follow the steps suggested in mojontwins website: www.mojontwins.com/mojoniaplus/viewtopic.php?t=1976

But EVEN with such code from mojontwins website, it fails to display it properly

So I divided the super 'misifu' (yes she will the heroine this time) into 8 pixels width columns, and then exported using SevenUP.

;GRAPHIC DATA:
;Pixel Size:      (  8,  24)
;Char Size:       (  1,   3)
;Sort Priorities: Mask, Char line, Y char
;Data Outputted:  Gfx
;Interleave:      Sprite
;Mask:            Yes, before graphic



extern unsigned char sprite_prota [];

#asm

._sprite_prota
cat1a:
DEFB 253,  2,253,  2,255,  0,255,  0
DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,239, 16, 31,224, 31,224
DEFB 127,128, 31,224,135,120,224, 31
DEFB 224, 31,248,  7,252,  3,248,  7
DEFB 248,  7,248,  7,252,  3,255,  0

DEFB 255, 0, 255, 0, 255, 0, 255, 0
DEFB 255, 0, 255, 0, 255, 0, 255, 0

DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,248,  7,128,127,  0,255
DEFB  0,255,  1,254,  7,248,143,112
DEFB 143,112,143,112,103,152,255,  0


DEFB 255, 0, 255, 0, 255, 0, 255, 0
DEFB 255, 0, 255, 0, 255, 0, 255, 0

DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 254,  1, 28,227,  0,255,  0,255
DEFB  0,255,128,127,248,  7,249,  6
DEFB 227, 28,227, 28,255,  0,255,  0

DEFB 255, 0, 255, 0, 255, 0, 255, 0
DEFB 255, 0, 255, 0, 255, 0, 255, 0


DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,255,  0,255,  0,255,  0
DEFB 255,  0,255,  0,191, 64,191, 64
DEFB 15,240,  3,236,  1,254,  3,252
DEFB  3,252, 15,240, 63,192,159, 96
DEFB 159, 96,159, 96,207, 48,255,  0

#endasm

And tried to draw it, without success, getting a 'churro':

This  churro

instead of this

s = sp1_CreateSpr(SP1_DRAW_MASK2LB, SP1_TYPE_2BYTE, 3, 16, 0);
     sp1_AddColSpr(s, SP1_DRAW_MASK2LB, 0, 112, 0);
     sp1_AddColSpr(s, SP1_DRAW_MASK2LB, 0, 224, 0);
     sp1_AddColSpr(s, SP1_DRAW_MASK2LB, 0, 336, 0);
     sp1_AddColSpr(s, SP1_DRAW_MASK2RB, 0, 0, 0);
     sp1_MoveSprAbs(s, &cr, sprite_prota, 10, 14, 0, 4);

Any clue guys?

Also; the tutorial in z88dk explains things slightly different xD

github.com/z88dk/z88dk/blob/master/doc/ZXSpectrumZSDCCnewlib_SP1_01_GettingStarted.md

[jordi]

Ok, I have abandoned the idea of using SevenUP and created my quick and dirty real sp1 sprite creator:

github.com/jsmolina/z88dk-tutorial-macos/tree/master/png2sp1sprite

It generates EXACTLY the same format described in

github.com/z88dk/z88dk/blob/master/doc/ZXSpectrumZSDCCnewlib_SP1_04_BiggerSprites.md

So I am having some advances then.

[greenwebsevilla]

Sept 2, 2018 9:49:06 GMT jordi said:

Ok, I have abandoned the idea of using SevenUP and created my quick and dirty real sp1 sprite creator:

github.com/jsmolina/z88dk-tutorial-macos/tree/master/png2sp1sprite

It generates EXACTLY the same format described in

github.com/z88dk/z88dk/blob/master/doc/ZXSpectrumZSDCCnewlib_SP1_04_BiggerSprites.md

So I am having some advances then.

Buenas Jordi,

¿Has mirado como funciona MK2/Churrera? Usa z88dk importando los sprites desde un PNG que yo creo en SevenUp. Igual puede servirte. Es código ya liberado así que puedes pillar lo que necesites.

Saludos


-----------------------------------------------------------------------------------------------------------------------------------------------


Hi Jordi,

Have you tried to see how Mk2 works? Ituses z88dk by importing the sprites from a PNG that it may work in SevenUp too. It is open code, so you can take whatever you need

[cgonzalez]

Amigo,

Si quieres te doy una mano, creo que vi un par de tutoriales para lo que quieres contactame por interno....

----------------------------------------------------------------------------------------------

Hey pal!

If you want, I can help you, I think I saw a couple of tutorials for what you are looking for, please send me a PM...

[jordi]

Casi lo prefiero con el script finporque SevenUp lo ejecutaba con Wine y no iba muy fino.

He conseguido que funcione en cuanto a pintado del sprite usando mi script en python:

youtu.be/PH6nX-GxZ5E

Luego he intentado animarlo y bueno, nuevo escollo: aunque creo que sí genero bien el tema del sprite: 4 bloques, en cada bloque añado un frame de la animación con su máscara (_sprite_protar1_f1)
github.com/jsmolina/speccy-misifu/blob/master/protar.asm

La parte de la animación no me acaba de ir fina y no he visto ejemplos con sprites 'grandes':

github.com/jsmolina/speccy-misifu/blob/master/juegozx2.c

Si la pongo así como dice en www.z88dk.org/forum/viewtopic.php?id=10277 me hace cosas raras:
sp1_MoveSprPix(catr1sp, &full_screen, (void*)(animation_offset + DELTA), x++, 0);

[jordi]

Sept 2, 2018 10:55:25 GMT greenwebsevilla said:

Sept 2, 2018 9:49:06 GMT jordi said:

Ok, I have abandoned the idea of using SevenUP and created my quick and dirty real sp1 sprite creator:

github.com/jsmolina/z88dk-tutorial-macos/tree/master/png2sp1sprite

It generates EXACTLY the same format described in

github.com/z88dk/z88dk/blob/master/doc/ZXSpectrumZSDCCnewlib_SP1_04_BiggerSprites.md

So I am having some advances then.

Buenas Jordi,

¿Has mirado como funciona MK2/Churrera? Usa z88dk importando los sprites desde un PNG que yo creo en SevenUp. Igual puede servirte. Es código ya liberado así que puedes pillar lo que necesites.

Saludos


-----------------------------------------------------------------------------------------------------------------------------------------------


Hi Jordi,

Have you tried to see how Mk2 works? Ituses z88dk by importing the sprites from a PNG that it may work in SevenUp too. It is open code, so you can take whatever you need

Hola!

Yes I checked Mk2, but it was targeted for an older version and nothing of their examples or their great code snips work now.

Sí, he mirado MK2 pero estaba para una versión más antigua y ninguno de sus ejemplos o de sus snippets funciona ya.

Un saludo

[greenwebsevilla]

Sept 2, 2018 18:01:18 GMT jordi said:

Sept 2, 2018 10:55:25 GMT greenwebsevilla said:

Buenas Jordi,

¿Has mirado como funciona MK2/Churrera? Usa z88dk importando los sprites desde un PNG que yo creo en SevenUp. Igual puede servirte. Es código ya liberado así que puedes pillar lo que necesites.

Saludos


-----------------------------------------------------------------------------------------------------------------------------------------------


Hi Jordi,

Have you tried to see how Mk2 works? Ituses z88dk by importing the sprites from a PNG that it may work in SevenUp too. It is open code, so you can take whatever you need

Hola!

Yes I checked Mk2, but it was targeted for an older version and nothing of their examples or their great code snips work now.

Sí, he mirado MK2 pero estaba para una versión más antigua y ninguno de sus ejemplos o de sus snippets funciona ya.

Un saludo

Ah entiendo. Si creo que usa una versión bastante antigua.

Enviado desde mi SM-G935F mediante Tapatalk

[jordi]

Tengo muy buenas noticias. He actualizado mi script python y ahora genera bien el sprite, peeeero como parece que el sp1 es duro de roer, tenía que pasar algo.

He pasado de tener bien la máscara
www.youtube.com/watch?v=PH6nX-GxZ5E&feature=youtu.be

a que esté animado pero no funcione la máscara

youtu.be/QW5seiAKFLo

Curiosamente, si invierto los píxeles y la máscara, entonces... funciona!

youtu.be/zOlWahg6rdI

Como siempre, el código en github:
github.com/jsmolina/speccy-misifu/blob/master/juegozx2.c#L56

good news now. I updated my python script and now it generates the sprite correctly for the animation, buuut, as sp1 is hard, there's something else:

I had proper mask animation
www.youtube.com/watch?v=PH6nX-GxZ5E&feature=youtu.be

And now I have an animated cat, but mask fails to work properly
youtu.be/QW5seiAKFLo

Curiously, if I invert the mask and the pixels definition, it actually works

youtu.be/zOlWahg6rdI

As usual, the code in github:
github.com/jsmolina/speccy-misifu/blob/master/juegozx2.c#L56

Así que... SP1, allá vamos

[Admin]

I have some information that Hikoki has compiled from the web, Jordi


Alternativa a SP1 para sprites monocromos grandes animados?

www.z88dk.org/wiki/doku.php?id=library:sprites:monosprites

Y viene con un editor de sprites que no conocía.


Consejos de Timmy para reducir memoria con SP1 en este post
www.z88dk.org/forum/viewtopic.php?pid=15706#p15706


Consejos generales para reducir memoria en Z88DK.

www.worldofspectrum.org/forums/discussion/comment/804734/#Comment_804734

www.worldofspectrum.org/forums/discussion/comment/571409/#Comment_571409

www.worldofspectrum.org/forums/discussion/comment/405903/#Comment_405903

www.worldofspectrum.org/forums/discussion/comment/336143/#Comment_336143

www.worldofspectrum.org/forums/discussion/comment/570224/#Comment_570224

www.z88dk.org/forum/viewtopic.php?pid=15702#p15702

cantidad de memoria que consume el manejo de sprites con z88dk : www.usebox.net/jjm/one-game-a-month/

www.usebox.net/jjm/zxdev/


www.worldofspectrum.org/forums/discussion/comment/911521/#Comment_911521

www.worldofspectrum.org/forums/discussion/45569/documentation-for-sp1-for-z88dk

www.worldofspectrum.org/forums/discussion/37467/a-z88dk-sp1-demo-with-source

I hope that helps!

[jordi]

Gracias!! Le echaré un ojo!!

Thanks!! I will take a look!!


Btw, some more dificulties. When sprite is moved in Y, looks like there's some trouble in deleting background, why? it's so strange.
Algunas dificultades. Cuando el sprite se mueve en Y, parece que hay problemas para borrar el fondo, por qué? es extraño.
youtu.be/OpryQ2oxvsY

[greenwebsevilla]

Sept 3, 2018 21:51:43 GMT jordi said:

Gracias!! Le echaré un ojo!!

Thanks!! I will take a look!!


Btw, some more dificulties. When sprite is moved in Y, looks like there's some trouble in deleting background, why? it's so strange.
Algunas dificultades. Cuando el sprite se mueve en Y, parece que hay problemas para borrar el fondo, por qué? es extraño.
youtu.be/OpryQ2oxvsY

Has definido las columnas del sprite de 3 caracteres de alto? Igual el carácter extra no tiene bien la máscara. Debería ser todo transparente.

Enviado desde mi SM-G935F mediante Tapatalk

[jordi]

Sept 3, 2018 22:10:26 GMT greenwebsevilla said:

Sept 3, 2018 21:51:43 GMT jordi said:

Gracias!! Le echaré un ojo!!

Thanks!! I will take a look!!


Btw, some more dificulties. When sprite is moved in Y, looks like there's some trouble in deleting background, why? it's so strange.
Algunas dificultades. Cuando el sprite se mueve en Y, parece que hay problemas para borrar el fondo, por qué? es extraño.
youtu.be/OpryQ2oxvsY

Has definido las columnas del sprite de 3 caracteres de alto? Igual el carácter extra no tiene bien la máscara. Debería ser todo transparente.

Enviado desde mi SM-G935F mediante Tapatalk

Ya está, era cosa del método. Curiosamente sp1_MoveSprAbs 'works like a charm' (siempre he querido decir eso)

youtu.be/1rSRFkPmecE

Ahora a dividir el fondo en tiles, venga que vamos para bingo!

[Admin]

Hey! This is really progressing! The jump animation feels like the original in PC!

[michellekg]

Greetings, jordi!

Nice project, wish you luck.

I sent you PM regarding graphics.

[jordi]

Reading it

btw, I have improved so much since latest posts
www.youtube.com/watch?v=JU3Yya_o29k&feature=youtu.be

[Admin]

Looking good! This is taking shape nicely and fast!

[jordi]

Do you think doing the cat 'more transparent' will be prettier in regards of color clash?


Creeis que hacer el gato más transparente mejorará el color clash?


Target Renegade Style I mean:
www.elmundodelspectrum.com/pix/201006/targetr-3646-zoom.gif

[hikoki]

Hi
I wonder if transparent attributes as in this sample could be of help
www.worldofspectrum.org/forums/discussion/comment/596252/#Comment_596252
That is main sprites would be paper-only while backgrounds and secondary sprites with ink-only squares.

Alvin also mentions something about sp1_PutSprClr to reduce colour clash:
"6. Sprite colours are now masked. This allows for things like ink-only or paper-only sprites. By default sprites are now created transparent colour. Colouring can be done the same way as in splib2 by iterating over the sprite characters with sp1_IterateSprChar() or the fast way with sp1_PutSprClr(). The latter is meant for use inside the main loop where you may want to choose different colours depending on sprite rotation to minimize colour clash."

Edit: 

See also this post from the z88dk forums
www.z88dk.org/forum/viewtopic.php?pid=4843#p4843
I guess this was used when Gandalf walks past ladders or when Mag the Magician bumps into enemies.

[jordi]

Sept 7, 2018 14:41:10 GMT hikoki said:

Hi
I wonder if transparent attributes as in this sample could be of help
www.worldofspectrum.org/forums/discussion/comment/596252/#Comment_596252
That is main sprites would be paper-only while backgrounds and secondary sprites with ink-only squares.

Alvin also mentions something about sp1_PutSprClr to reduce colour clash:
"6. Sprite colours are now masked. This allows for things like ink-only or paper-only sprites. By default sprites are now created transparent colour. Colouring can be done the same way as in splib2 by iterating over the sprite characters with sp1_IterateSprChar() or the fast way with sp1_PutSprClr(). The latter is meant for use inside the main loop where you may want to choose different colours depending on sprite rotation to minimize colour clash."

Edit: 

See also this post from the z88dk forums
www.z88dk.org/forum/viewtopic.php?pid=4843#p4843
I guess this was used when Gandalf walks past ladders or when Mag the Magician bumps into enemies.

Hi! Good point, lot of thanks!!

I will take a look, as this game the more develop, the more I see there are lot of overlaps it needs in regards of color.

There is more progress, I might try to keep developing while I optimize it.
youtu.be/vTgLg_bfs3o

[Admin]

Sept 9, 2018 15:52:14 GMT jordi said:

Sept 7, 2018 14:41:10 GMT hikoki said:

Hi
I wonder if transparent attributes as in this sample could be of help
www.worldofspectrum.org/forums/discussion/comment/596252/#Comment_596252
That is main sprites would be paper-only while backgrounds and secondary sprites with ink-only squares.

Alvin also mentions something about sp1_PutSprClr to reduce colour clash:
"6. Sprite colours are now masked. This allows for things like ink-only or paper-only sprites. By default sprites are now created transparent colour. Colouring can be done the same way as in splib2 by iterating over the sprite characters with sp1_IterateSprChar() or the fast way with sp1_PutSprClr(). The latter is meant for use inside the main loop where you may want to choose different colours depending on sprite rotation to minimize colour clash."

Edit: 

See also this post from the z88dk forums
www.z88dk.org/forum/viewtopic.php?pid=4843#p4843
I guess this was used when Gandalf walks past ladders or when Mag the Magician bumps into enemies.

Hi! Good point, lot of thanks!!

I will take a look, as this game the more develop, the more I see there are lot of overlaps it needs in regards of color.

There is more progress, I might try to keep developing while I optimize it.
youtu.be/vTgLg_bfs3o

Obviously there are things to correct and improve, but there is also a lot of advances and seems that you are picking up how to code in the Spectrum pretty fast! The game is already very recognizable! By the way, have you thought about doing the musics?

Keep it up!

[jordi]

Sept 9, 2018 19:32:59 GMT Admin said:

Sept 9, 2018 15:52:14 GMT jordi said:

Hi! Good point, lot of thanks!!

I will take a look, as this game the more develop, the more I see there are lot of overlaps it needs in regards of color.

There is more progress, I might try to keep developing while I optimize it.
youtu.be/vTgLg_bfs3o

Obviously there are things to correct and improve, but there is also a lot of advances and seems that you are picking up how to code in the Spectrum pretty fast! The game is already very recognizable! By the way, have you thought about doing the musics?

Keep it up!

I might have to respect the original theme, although it was repetitive and internal speaker. The AY from the spectrum I'm sure is capable of much more.

I should leave it to the end? or it will be too late? also I guess I will need to reoganise the variables to save memory later...

As usual, any pull request is accepted and welcomed!

Thanks sir

[hikoki]

Jordi, thanks for sharing the code!

It is recommended that you plan early your memory map to make room for later devevelopment. Alvin explained how this works on some links that Ivan posted above. You could even go for the 128K.
I've read here that using global variables helps to save space
www.z88dk.org/forum/viewtopic.php?id=8989&p=1
You'll have also read about moving sprites out instead of create/destroying them.
Some functions to print at coordinates instead of using the ones for pixel precicion seem to save memory.
What about using the monographics library where possible? It's slower than sp1 but consumes far less memory.

Looking forward to see how you reduce colour clash. Recalculating colours is said to be expensive. Sometimes a bit of colour clash may look nice.

Cheers

[jordi]

Sept 9, 2018 21:26:14 GMT hikoki said:

Jordi, thanks for sharing the code!

It is recommended that you plan early your memory map to make room for later devevelopment. Alvin explained how this works on some links that Ivan posted above. You could even go for the 128K.
I've read here that using global variables helps to save space
www.z88dk.org/forum/viewtopic.php?id=8989&p=1
You'll have also read about moving sprites out instead of create/destroy them.
Some functions to print at coordinates instead of using the ones for pixel precicion seem to save memory.
What about using the monographics library where possible? It's slower than sp1 but consumes far less memory.

Looking forward to see how you reduce colour clash. Recalculating colours is said to be expensive. Sometimes a bit of colour clash may look nice.

Cheers

Thank you so much. I though it was going to be the opposite: global vars to consume less memory, but that's a spectrum and I'm thinking on modern computers where you exit a function and unload all vars. Thanks for recommendation.
In regards, of color clash, I was experimenting with your recommendation of paper-only UDG and effect looks nicer (except for the 'CAT' letters, I will try to revamp that UDGs):
youtu.be/YNFj87K9Apc