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Galactopus!


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#1 KaeruYojimbo OFFLINE  

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Posted Fri Sep 19, 2014 10:14 AM

galactopus.png

 

Oh &%$@! Either the advance warning satellites are %&$#!@ again or there's a giant %©#&$ space octopus heading straight for earth! Congressional budget cuts have reduced NASA to launching model rockets in the park but never fear, the private sector is here! For six easy payments of just $199,999,999,999.99, Astr-O-Corp has volunteered to send their prototype low orbit fighter to intercept Galactopus™. Since it's still in the prototype phase, the laser cannons aren't powerful enough to destroy Galactopus™, but they can chip away his Octonuim armor. Collect eight pieces of Octonium and add them to the ship's reactors and the cannon will be powerful enough to finish Galactopus™ off once and for all!

 

Controls:

Left and right move the fighter left and right (in that order)

Fire fires the laser cannon

Left difficulty B - laser blasts pass harmlessly through octonium pieces

Left difficulty A - laser blasts destroy octonium pieces

Press the fire button on joystick 2 to use it to control Galactopus™

 

Things to do:

Add sound

Add more to Galactpus™ death sequence

Progressively increasing difficulty by improving AI and/or weapons

Maybe another game setting with the right difficulty switch

Score jackpot based on the number of shots needed to destroy Galactopus™

 

This is the closest I've come yet to completing a game. Hope you guys enjoy it. Let me know what you think.

 

UPDATE - I added the final version of the game (Galactopus20141115) here so you don't have to go through the entire thread to find it.

Attached Files


Edited by KaeruYojimbo, Sun Nov 16, 2014 7:37 PM.


#2 timdu OFFLINE  

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Posted Sat Sep 20, 2014 6:18 AM

I like what you have so far. Kind of reminds me of a  combination of  a sci-fi "creature double feature" movie from the 1960s / 1970s and GALAXIAN and MISSILE COMMAND... ( at the end when Galactopus descends! )

 

Keep up the good work!

 

Tim


Edited by timdu, Sat Sep 20, 2014 6:18 AM.


#3 GroovyBee OFFLINE  

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Posted Sat Sep 20, 2014 6:39 AM

Good start! Had a quick play. Some thoughts :-

- It really needs sound effects (I see that its on your list of things to do :D).
- How about making the Galactopus multi-coloured to spice him up a bit?
- Make the Galactopus change colour briefly after a successful hit.
- Make the falling Octonium pieces a different colour (or cycle colours as they fall) as they fall. That way your eye is drawn to them as something interesting to collect.
- Its a bit too easy to track the Galactopus and avoid his shots. It might be more fun if he changes direction part way into the screen. Then the game is a bit more random.
- Make the player ship multi-coloured.
- Make the Octonium shield multi-coloured.

#4 Philsan ONLINE  

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Posted Sat Sep 20, 2014 3:22 PM

Very nice!



#5 belial OFFLINE  

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Posted Sun Sep 21, 2014 9:58 AM

I just checked out your game. I really like it :) Can't wait for sound effects :)



#6 TrekMD OFFLINE  

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Posted Sun Sep 21, 2014 1:35 PM

Very nice indeed!  



#7 KaeruYojimbo OFFLINE  

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Posted Sun Sep 21, 2014 2:23 PM

Thanks for the kind words everyone. The game is resetting itself, usually the first time I hit Galactopus on the fourth stage. Has anyone else played far enough to have this happen to them? I'm working on tracking down the cause then it's back to making explody noises.



#8 KaeruYojimbo OFFLINE  

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Posted Mon Sep 22, 2014 10:32 AM

Here's the latest version. The game no longer crashes, plus I made a few graphic tweaks and started adding sound.

Attached Files



#9 PFL OFFLINE  

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Posted Sat Sep 27, 2014 12:20 PM

I just tried this out and I really enjoy it so far.  I pretty much agree with what others have said.  There's a lot of potential for a really cool game here.  Looking forward to seeing what you add. :)



#10 save2600 ONLINE  

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Posted Sat Sep 27, 2014 2:00 PM

Looks cool - haven't tried it yet, but wanted to say I love the name of the game! :lol:

#11 KaeruYojimbo OFFLINE  

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Posted Sat Sep 27, 2014 5:54 PM

A little update. Added some sound effects. This is my first real attempt at sound with batari basic, so I'm still tweaking and figuring things out. Also, Galactopus changes colors every couple of levels. This represents what will eventually be a progression of more cunning and better armed Galactopi.

Attached Files



#12 TrekMD OFFLINE  

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Posted Sat Sep 27, 2014 8:04 PM

Nice.  I just tried it.  The added sounds are good.  



#13 REACTOR OFFLINE  

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Posted Sat Sep 27, 2014 8:15 PM

The Galactopus was really superb, nice animation of graphics. But it's a tad on the boring side, I find that shooting at something continously in one setting can get old, but a very nice arcade game!



#14 Kosmic Stardust OFFLINE  

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Posted Sat Sep 27, 2014 8:28 PM

And another fine Batari Basic game comes out of the woodworks: Looking good so far... ;) Can't wat to play it on my Harmony cart but sadly I am laid up in the hospital from surgery. :sad: I saw the giant Octopus and the first game I though of was Name this Game, or the Game N Watch LCD "Octopus."

#15 PFL OFFLINE  

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Posted Sun Sep 28, 2014 9:09 AM

I stuck the new build on my Harmony and it's really enjoyable.  I'm in PAL land and perhaps that's causing me a problem (other than colours).  When I progressed to the next 'level' where there are the two barriers protecting the Galactopus the screen jumps a few scanlines every so often.  Like I say, it could be a PAL issue though.  Would you consider doing a PAL 60 version, at all?

 

I've no idea if this is even possible but I have a suggestion.  A starfield in the background.  Preferably a scrolling starfield.  It would make a huge difference to the sense of dynamics in the game.  



#16 KaeruYojimbo OFFLINE  

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Posted Sun Sep 28, 2014 10:01 AM

Just checked it out in the Stella debugger and it looks like it's going over 262 scanlines every so often with the two shields. I was worried this might be happening (pfhline apparently uses up a lot of cycles) but hadn't checked yet (denial helps me keep moving forward).

 

Once I get the game finished, I'll look into what it would take to do a PAL version.



#17 KaeruYojimbo OFFLINE  

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Posted Sun Sep 28, 2014 10:33 AM

Added an extra drawscreen, which seems to have solved the scanline issue. Try it out and let me know (Don't have a Harmony cart to try it myself. I do have a Supercharger but as far as I know there's no Mac equivalent to makewav. Anyone out there know of one?). I looked into it and if I'm reading it right, PAL 60 uses the same number of scanlines, just a different color palette, so conversion is just a matter of swapping out color values.

 

Stardust, hope it wasn't anything too serious. Get well soon!

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#18 PFL OFFLINE  

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Posted Sun Sep 28, 2014 10:39 AM

Thanks for the upload.  I'll try it out after tea for you.

 

As far as the PAL conversion thingy goes, lots of people say it's really easy to do.  Like you say, normally it's just a matter of changing colour values.

 

Here's a link to a thread all about PAL 60 ROM conversions:

 

http://atariage.com/...459-pal60-roms/

 

Perhaps there's something of use to you in the thread.  I'm giving you the link to harass you into doing a PAL version.  Just thought you might like it. :)



#19 Gemintronic ONLINE  

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Posted Mon Sep 29, 2014 8:03 AM

For future "Giant Enemy" projects you might consider using pfheights and playfield blocks for the boss like my game Cyber Willy:

http://atariage.com/...ber-willy-done/

 

cwingame.jpg


#20 PFL OFFLINE  

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Posted Mon Sep 29, 2014 12:23 PM

Just thought I'd let you know I think there's a bug with the hit detection.  If you fire two shots in quick succession the second 'hit' seems to go straight through Galactopus and doesn't count as a hit. 

 

PS:  Still having fun. :)



#21 Gemintronic ONLINE  

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Posted Mon Sep 29, 2014 12:37 PM

Added an extra drawscreen, which seems to have solved the scanline issue. Try it out and let me know (Don't have a Harmony cart to try it myself. I do have a Supercharger but as far as I know there's no Mac equivalent to makewav. Anyone out there know of one?). I looked into it and if I'm reading it right, PAL 60 uses the same number of scanlines, just a different color palette, so conversion is just a matter of swapping out color values.

 

Stardust, hope it wasn't anything too serious. Get well soon!

 

Could it have to do with that extra drawscreen?  You might have to check for collisions on the first drawscreen and save the result to a variable so you can deal with it when you're ready.



#22 KaeruYojimbo OFFLINE  

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Posted Mon Sep 29, 2014 7:57 PM

I noticed that too. I guessed it was from the extra drawscreen as well. Haven't had a chance to go back through and check everything that affected yet. Glad you're enjoying the game.


Edited by KaeruYojimbo, Mon Sep 29, 2014 7:57 PM.


#23 KaeruYojimbo OFFLINE  

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Posted Sun Oct 5, 2014 3:48 PM

Fixed the hit detection and added a little bit to when you kill Galactopus. Changed the scoring some too. Killing Galactopus is worth from 100-1000 points, depending on how many shots it takes you to finish him off.

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#24 PFL OFFLINE  

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Posted Mon Oct 6, 2014 2:57 PM

I've been offline for a couple of days so it was nice to see a nice new build.  Lookinf forward to trying it out. :)



#25 neotokeo2001 OFFLINE  

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Posted Wed Oct 8, 2014 8:20 PM

Great game. Found a couple bugs/issues.

 

#1 - If the player does not move then it is impossible for Galactopus to hit them. The shots will skim the left or right side. You can stay in one place and just take potshots.

 

#2 - If you hold down the fire button while you are moving the first shot comes from the players ship, the next two shots will be from the location of the first shot regardless of where the player is at that point.






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