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Plague (Atari 2600)

homebrew

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#1 MemberAtarian OFFLINE  

MemberAtarian

    Chopper Commander

  • 232 posts

Posted Fri Jan 12, 2018 2:00 AM

2018.02.09. - Update

 

I think these may be the final versions.

 

PAL: 

 

PAL60:

(flicker and interference is because my recorder can really not handle 60Hz)

 

I did not record the NTSC because I don't have an NTSC console, Z26 emulator does not emulate the timing errors and somehow even the older and the current Stella both does not want to let Fraps record my gameplay, only the sound.

 

There were things those I could work and and some that I couldn't. Mostly because of the 262 cycles.

.Now, as asked, the fire button makes you jump, so on the last part as you are shooting sick people you have to use UP for shooting. It's a really easy part, so it won't disturb you hopely.

-I tried to go under 262 cycles as possible, that was the most disturbing thing, creating a lot of jumps if something is not needed. You can see that there are some levels where you can jump on platforms under them, it's because I had to turn off pfreads for those parts, that is the command that eats most of the cycles. Sometimes it will happen in the NTSC and PAL60 versions, with PAL you have more cycles, so it works perfectly, but it's slower because of the 50Hz.

-There will be some glitches, it's because I would need TWICE of the pfreads to make sure if there is an object in front of you, over you or under you. The hardest part was jumping, so I had to make strange decisions in coding that I am not proud of.

-Unfortunately, I had to cut the last boss because of the strange sprite placement of BB, it puts them into the last bank no matter what and of I don't want to put them all there, creating a long cycle that causes overload again and sometimes, I could cry instead of shouting and hitting the desk or the keyboard. :D

-I tried another way to make the score background black, but make the last row of background gray, so you could recognize holes easier, I could insert this little code

 

asm
minikernel
sta WSYNC
lda $00
sta COLUBK
rts
end

 

into vblank, but it left out a lof and there was a lot if gray under the last row of blocks (BB leaves the 12th row empty for vertical scrolling), and to be honest, it looked uggly.

 

-You can press Select, it does the same thing on the titlescreen as reset, I used it for testing and jumping to the desired room, now it goes to room0. I wanted to remove it, but if I do it, the game won't load the main cycle with the gameplay. Why won't it? Don't know, BB has some really strange and unfair things, sometimes it "creates errors" while compiling that makes no sense. 

 

I think other errors were corrected that I found while testing, if you find more, please, tell me!

I attached the code of someone is curious about it.

 

https://www.4shared....itlescreen.html<< The title screen for assembling.

 

 

2018.01.25. - Update:

 



The two main music got an update, and I show you one of the two bosses. :) It's a reference to something. :)

 

2018.01.15. Update:

New rooms, objects and the cave. :)

 

2018.04.01. Update:

Some little changes were made based on requests.

 

 

2018.01.14. Update:

 

This is the state I'm right now. Unfortunately I had to remove a lot of ideas (mostly collectible items) because I just had ran out of variables. Of course there are var0-var8 besides a-z, but they are part of the playfield, so after I redraw the playfield, they are set as the playfield is set at that. This would make these variables only usable inside of the room, but I mostly need counters and these varx-es can only have 0 or 1 as a value.

 

The other thing I don't know how to solve right now is making you jump across the pf above if there is only one block in your way, so two or more blocks should punch you back. The problem with this is that you cannot place two pfread commands in one f statement, even if you create two values for the pfreads and compare only the values.

 

The third thing is I used the p1 for the doctor because the kernel settings I done removes the missile0 (I will have to use it in the last battle) and the multispite kernel only works for p1 sprites, so the stages look a bit hollow, I know.

 

 

You are the famous and misanderstood plague doctor of the middle ages, collecting herbs and at the end, duel a battle with Death itself. (That will be the only part of the game where you can use the projectile). A still have to manage scrolling the screen and putting there the other objects. :)

 

Gameplay: 

 

Attached Thumbnails

  • 000.png
  • 001.png

Attached Files


Edited by MemberAtarian, Sat Sep 29, 2018 8:51 AM.


#2 Keatah OFFLINE  

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    Missile Commander

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Posted Fri Jan 12, 2018 2:36 AM

dark..



#3 xybot67 OFFLINE  

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    Moonsweeper

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Posted Fri Jan 12, 2018 7:42 AM

I really like the atmosphere you are creating. Can't wait to see where you take this.



#4 MemberAtarian OFFLINE  

MemberAtarian

    Chopper Commander

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Posted Fri Jan 12, 2018 7:51 AM

I gave up on horizontal scrolling, it's too much of pain, but started doing the rooms with objects. :) There will be a lot of NUSIZ0 XD (I use p1 for the doctor)



#5 TrekMD OFFLINE  

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    River Patroller

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Posted Fri Jan 12, 2018 7:59 AM

I like how this looks. 



#6 atari2600land OFFLINE  

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Posted Fri Jan 12, 2018 8:03 AM

It needs color. What you have now would be good if the switch was set to b&w.



#7 StanJr OFFLINE  

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Posted Fri Jan 12, 2018 8:52 AM

For horizontal scrolling check out The Gizzle Wap and the Blizzard of Firn in the Bb forum.  MountainKing has a really nice, smooth horizontal scroll going on in that game.  Maybe he can help.

 

Love the subject matter of the game, very unique.



#8 SpiceWare OFFLINE  

SpiceWare

    Draconian

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Posted Fri Jan 12, 2018 9:14 AM

Nice! Definitely the appropriate color palette for the subject matter.



#9 Greenfuzz OFFLINE  

Greenfuzz

    Star Raider

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Posted Fri Jan 12, 2018 10:28 AM

Looks GREAT. Please keep us posted.



#10 Jinroh OFFLINE  

Jinroh

    Dragonstomper

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Posted Fri Jan 12, 2018 12:29 PM

Rad very cool shadowy minimalism. :D Loving it so far.

 

Jumping physics, animation, and collision look on point too. :)



#11 SPIKE OFFLINE  

SPIKE

    Star Raider

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Posted Sat Jan 13, 2018 3:28 AM

PLAGUE looks really interesting.

 

can't wait to see the finished version!

 



#12 MemberAtarian OFFLINE  

MemberAtarian

    Chopper Commander

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Posted Sun Jan 14, 2018 8:28 AM

Hi guys,

 

This is the state I'm right now. Unfortunately I had to remove a lot of ideas (mostly collectible items) because I just had ran out of variables. Of course there are var0-var8 besides a-z, but they are part of the playfield, so after I redraw the playfield, they are set as the playfield is set at that. This would make these variables only usable inside of the room, but I mostly need counters and these varx-es can only have 0 or 1 as a value.

 

The other thing I don't know how to solve right now is making you jump across the pf above if there is only one block in your way, so two or more blocks should punch you back. The problem with this is that you cannot place two pfread commands in one f statement, even if you create two values for the pfreads and compare only the values.

 

The third thing is I used the p1 for the doctor because the kernel settings I done removes the missile0 (I will have to use it in the last battle) and the multispite kernel only works for p1 sprites, so the stages look a bit hollow, I know.

Attached Files


Edited by MemberAtarian, Sun Jan 14, 2018 8:28 AM.


#13 MemberAtarian OFFLINE  

MemberAtarian

    Chopper Commander

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Posted Mon Jan 15, 2018 1:57 PM

https://www.youtube....bed/5QZ-LYJNbtQ

 

Another progress. :) Many errors corrected and other rooms, like the cave added. :)

Attached Files


Edited by MemberAtarian, Mon Jan 15, 2018 1:59 PM.


#14 Greenfuzz OFFLINE  

Greenfuzz

    Star Raider

  • 69 posts

Posted Mon Jan 15, 2018 2:13 PM

Man...looks fantastic...with unique and difficult jumps and very impressive sprites. I also love the NO HOPE and NO CURE messages...

 

I don't understand the cave section, however.



#15 MemberAtarian OFFLINE  

MemberAtarian

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Posted Mon Jan 15, 2018 2:36 PM

Man...looks fantastic...with unique and difficult jumps and very impressive sprites. I also love the NO HOPE and NO CURE messages...

 

I don't understand the cave section, however.

There will be only this tree cave section. :) The first has really no hard part, you only have to jump across. The second had floating platforms, so you have to guess jumps. The third has that annoying "bridge fall" and a little trick at the end. I know it's only easy for me because I know the layout. :) Score works as continue here, but if you waste too much, you can't create enough medicine.
Messages are important part of this game. :)



#16 TrekMD OFFLINE  

TrekMD

    River Patroller

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Posted Mon Jan 15, 2018 4:06 PM

I like what I'm seeing so far.  :)



#17 Gibstov OFFLINE  

Gibstov

    Space Invader

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Posted Wed Jan 17, 2018 9:17 AM

This game looks pretty cool.



#18 Swami OFFLINE  

Swami

    River Patroller

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Posted Wed Jan 17, 2018 7:47 PM

The creature on the front screen looks familiar. My first thought was Dark Crystal, but I think it is closer to something else, maybe animated, but not sure. What was your inspiration?



#19 StanJr OFFLINE  

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Posted Wed Jan 17, 2018 8:27 PM

That's a standard plague doctor's mask circa 14c.

 

But it also looks a lot like Spy vs. Spy

Attached Thumbnails

  • Spy-vs-Spy.png


#20 Swami OFFLINE  

Swami

    River Patroller

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Posted Wed Jan 17, 2018 10:09 PM

That's a standard plague doctor's mask circa 14c.

 

But it also looks a lot like Spy vs. Spy

 

It was the plague doctors mask. Still can't remember where, but it was something like this:

cccc7f00dfdb668bdb0cec23e1fd19dc--plague



#21 RamrodHare OFFLINE  

RamrodHare

    Dragonstomper

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Posted Thu Jan 18, 2018 5:17 AM

I'll be keeping an eye on this. It looks cool so far. :thumbsup:



#22 MemberAtarian OFFLINE  

MemberAtarian

    Chopper Commander

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Posted Fri Jan 19, 2018 3:20 AM

You got it right, I really like plague doctor outfit's, I have also mine. :D Yesterday was a horrible day, but today I'm gonna continue development, there was a part with "God's hand" that took me a lot to figure out which line caused it not working. :D

Attached Thumbnails

  • 04.jpg


#23 MemberAtarian OFFLINE  

MemberAtarian

    Chopper Commander

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Posted Fri Jan 19, 2018 4:43 PM

 
I think this was the hardest part to program by far, the Plague Doc eats a mushroom, fights his own fears and progress.

 



#24 StanJr OFFLINE  

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Posted Fri Jan 19, 2018 4:59 PM

That's a fascinating concept for a game chunk!



#25 Greenfuzz OFFLINE  

Greenfuzz

    Star Raider

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Posted Fri Jan 19, 2018 9:08 PM

It really appears to be an incredibly well thought out game.





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