shmups.system11.org

Shmups Forum
 
* FAQ    * Search
 * Register  * Login 
It is currently Tue Jul 23, 2019 7:38 pm View unanswered posts
View active topics



Post new topic Reply to topic  [ 10 posts ] 
Author Message
 Post subject: Gradius III (AC) Rank System
PostPosted: Thu Sep 20, 2012 11:03 pm 


User avatar

Joined: 24 Jan 2010
Posts: 189
The rank of this game is determined by a simple addition:

Game Difficulty + Loop/Stage + Powerups + Special = Rank

The rank range is 0-31.
The gameplay difference between rank levels increases as you reach the higher ranges, 21->22 is a larger deal than 5->6.

Game Difficulty
This is set on the DIP switches.

Easy - 0
Normal - 2
Hard - 4
Very Hard - 6

Loop/Stage
The value is determined by
8*(Loop # - 1) + (Stage # - 1) = Loop/Stage rank

Code:
Stage__________________Loop 1________Loop 2________Loop 3________Loop 4
1 Desert                    0             8            16            24
2 Bubble                    1             9            17            25
3 Volcano                   2            10            18            26
4 Speed                     3            11            19            27
5 Moai                      4            12            20            28
6 Cell                      5            13            21            29
7 Fire                      6            14            22            30
8 Plant                     7            15            23            31
9 Crystal                   8            16            24            31
10 Last                     9            17            25            31
EX: Gradius/Salamander     13            21            28           31


Powerups
Speed Up - +0 (no effect)
Missile - +1
Double - +2 (Spread gun and Free Way are +3)
Laser - +3
Option - +1 for each
Shield/Force - +4 (Reduce in extra edit is +2)

Special
There are two special conditions for rank.

1. Rank Limiter - Rank is limited to 16 on the first loop
2. Beginner Mode - Automatic -2

An extra condition for the PS2 port.
3. Easiest Difficulty - Divide rank by 2, throw out the decimal part.

Rank is sampled and updated at all times.
...

What rank affects
1. Enemy speed
2. Enemy bullet firing aggression
3. Bullet speed
4. Boss behavior

Demonstration
Image
Very Hard, Stage 1, Missile
6 + 0 + 1 = 7

Image
Very Hard, Stage 1, Missile, Option
6 + 0 + 1 + 1 = 8

As you see from the above pictures 1 rank can make a difference 8).

The below picture shows how rank is checked all the time, note the bullets only going to the Vic Viper and nowhere else.
Image
Very Hard, Stage 1, Force Field
6 + 0 + 4 = 10


--End


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Thu Sep 20, 2012 11:12 pm 


User avatar

Joined: 18 Jun 2012
Posts: 3433
Location: Chicago, IL
A great post; many thanks for explaining the system.

I wonder what would be the most effective way of exploiting the game's rank to actually being able to clear this damn game...
_________________
Image
DEMON'S TILT [bullet hell pinball] - Music Composer || EC2151 ~ My FM/YM2612 music & more! || 1CC List || PCE-CD: The Search for Quality


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Thu Sep 20, 2012 11:29 pm 


User avatar

Joined: 02 Dec 2010
Posts: 3586
i was told gradius iii is supposed to get impossible, but not this early. also taking into consideration what tviks said about iv being harder than iii and getting impossible around 7-6, what this all suggests is either that iii is harder than iv instead or that this game doesn't actually get impossible at all!

we need tool assisting on both games, i think.
_________________
In 1989,The Great Wall was discoverd
In 1990,The Picket Fence was also discoverd


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Fri Sep 21, 2012 12:15 am 


User avatar

Joined: 24 Jan 2010
Posts: 189
EmperorIng wrote:
I wonder what would be the most effective way of exploiting the game's rank to actually being able to clear this damn game...


The big thing you can do is intentionally play with no shield/force field activated. The Moai stage is the best place to see this effect, the difference is huge.

Despatche wrote:
i was told gradius iii is supposed to get impossible, but not this early. also taking into consideration what tviks said about iv being harder than iii and getting impossible around 7-6, what this all suggests is either that iii is harder than iv instead or that this game doesn't actually get impossible at all!


Gradius IV has some kind of dynamic rank counter (think Battle Garegga), with the rate of rank increase regulated by what powerups you have active on your ship. Unlike Gradius I II III, rank is dropped on EACH death, so that recovery slowly becomes easier. See here, note how the Moai spew rate becomes less on each death, as well as the enemy hatch dispense rate.

The Cell stage in G4 is probably the most brutal Gradius stage ever conceived, I mean that area will just wreck your shit. See here and here. The second video goes in with no death and reaches the boss with max rank, look at that insanity.


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Fri Sep 21, 2012 12:39 am 


User avatar

Joined: 18 Jun 2012
Posts: 3433
Location: Chicago, IL
I'll try playing tonight and tomorrow without the shield and see if that does anything for progression (knowing me, probably not!) - I never even made it to the Moai stage. All the same, this is a great bit of number-games to know, especially since i didn't even know Gradius had a ranking system!
_________________
Image
DEMON'S TILT [bullet hell pinball] - Music Composer || EC2151 ~ My FM/YM2612 music & more! || 1CC List || PCE-CD: The Search for Quality


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Sat Sep 22, 2012 12:59 pm 



Joined: 01 Aug 2010
Posts: 14
so does this mean loop 5 is the maximum difficulty? any idea if the snes version works in the same way?


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Sun Sep 30, 2012 7:59 am 


User avatar

Joined: 28 Sep 2012
Posts: 5
Location: Phoenix, Az
This is really interesting and explains why the game doesn't really get easier the more weapons you get.
Thanks for the info! :idea:
_________________
http://BabysoftMurderhands.com


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Sun Jan 13, 2013 8:25 am 


User avatar

Joined: 25 Jul 2011
Posts: 968
Location: Hawkey Town
Necrobump

So if one loses an option or shield, would the rank go down? If not, can rank keep going up?
_________________
STGWeekly Crew
Sky of Pin
LoserGaiden
shmups IRC wrote:
wich linode wud u fuk


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Sun Jan 13, 2013 4:47 pm 


User avatar

Joined: 18 Jun 2012
Posts: 3433
Location: Chicago, IL
I think rank is decreased by one for each death in Gradius III. So don't expect an easy time (ha!) if you died with four options, laser and missiles.

As Seahawk explains up above, Gradius IV makes things a little easier with a more flexible rank counter (at least as far as I understand) that makes recovery a bit more manageable.
_________________
Image
DEMON'S TILT [bullet hell pinball] - Music Composer || EC2151 ~ My FM/YM2612 music & more! || 1CC List || PCE-CD: The Search for Quality


Top
 Offline Profile  
 
 Post subject: Re: Gradius III (AC) Rank System
PostPosted: Tue Jan 15, 2013 8:29 am 


User avatar

Joined: 01 Sep 2011
Posts: 995
Do Gradius I and II have a similar system? I've heard they do.

Kinda like a double-edged sword. If you get options and good weapons, it's harder to survive, but if you don't get them, you won't survive anyway...
_________________
The resident X-Multiply fan.


Top
 Offline Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC


Who is online

Users browsing this forum: CloudyMusic and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Space Pilot 3K template by Jakob Persson
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group