Adds B_VAR_DIFFICULTY and related functions READ DESC #5337

pkmnsnfrn · 2024-09-07T20:00:45Z

DO NOT MERGE

until Sbird and Mgriffin have completed their reviews.

Closes #4197

Description

Adds B_VAR_DIFFICULTY which changes the loaded Trainers opponents, partners and and battle slide messages based on the value of this variable.
Adds script macros for safely checking and changing B_VAR_DIFFICULTY

Details

Adding New Difficulty Levels

By default, the included difficulty levels are

DIFFICULTY_EASY
DIFFICULTY_NORMAL
DIFFICULTY_HARD

If a developer wants to adjust the number of difficulty levels, add a constant to the above DIFFICULTY_COUNT and the system will automatically update to match.

Constants

The following constants are set to protect the player from accidently setting the difficulty value to an incorrect state. Developers are free to change these.

`DIFFICULTY_MIN`

This is the lowest possible difficulty that the player can be on. Any attempts to decrease past this will fail.

`DIFFICULTY_MAX`

This is the highest possible difficulty that the player can be on. Any attempts to increase past this will fail.

Defining Difficulty for Trainers and Partners

To define a difficulty for a Trainer, add a Difficulty field to the trainer in src/data/trainers.party

 === TRAINER_SAWYER_1 ===
 Name: SAWYER
 Class: Hiker
 Pic: Hiker
 Gender: Male
 Music: Hiker
 Double Battle: No
 AI: Basic Trainer
 
 Geodude
 Level: 21
 IVs: 0 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD / 0 Spe

+  === TRAINER_SAWYER_1 ===
+  Name: SAWYER
+  Class: Hiker
+  Pic: Hiker
+  Gender: Male
+  Music: Hiker
+  Double Battle: No
+  AI: Basic Trainer
+  Difficulty: Easy
+  
+  Pichu
+  Level: 1
+  IVs: 0 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD / 0 Spe
+  
+  === TRAINER_SAWYER_1 ===
+  Name: SAWYER
+  Class: Hiker
+  Pic: Hiker
+  Gender: Male
+  Music: Hiker
+  Double Battle: No
+  AI: Basic Trainer
+  Difficulty: Hard
+  
+  Golem
+  Level: 60
+  IVs: 0 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD / 0 Spe
+  
+  Rhydon
+  Level: 60
+  IVs: 0 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD / 0 Spe

If a Trainer does not have a defined difficulty, it will use DIFFICULTY_NORMAL If you do not want this to occur.

The same syntax is applied for partners in src/data/trainers.party.

 === PARTNER_STEVEN ===
 Name: STEVEN
 Class: Rival
 Pic: Steven
 Gender: Male
 Music: Male
 
 Metang
 Brave Nature
 Level: 42
 IVs: 31 HP / 31 Atk / 31 Def / 31 SpA / 31 SpD / 31 Spe
 EVs: 252 Atk / 252 Def / 6 SpA
 - Light Screen
 - Psychic
 - Reflect
 - Metal Claw
 
 Skarmory
 Impish Nature
 Level: 43
 IVs: 31 HP / 31 Atk / 31 Def / 31 SpA / 31 SpD / 31 Spe
 EVs: 252 HP / 6 SpA / 252 SpD
 - Toxic
 - Aerial Ace
 - Protect
 - Steel Wing
 
 Aggron
 Adamant Nature
 Level: 44
 IVs: 31 HP / 31 Atk / 31 Def / 31 SpA / 31 SpD / 31 Spe
 EVs: 252 Atk / 252 SpA / 6 SpD
 - Thunder
 - Protect
 - Solar Beam
 - Dragon Claw

+ === PARTNER_STEVEN ===
+ Name: STEVEN
+ Class: Rival
+ Pic: Steven
+ Gender: Male
+ Music: Male
+ Difficulty: Easy
+ 
+ Beldum
+ Brave Nature
+ Level: 4
+ IVs: 31 HP / 31 Atk / 31 Def / 31 SpA / 31 SpD / 31 Spe
+ EVs: 252 Atk / 252 Def / 6 SpA
+ - Light Screen
+ - Psychic
+ - Reflect
+ - Metal Claw
+ 
+ Mawile
+ Impish Nature
+ Level: 4
+ IVs: 31 HP / 31 Atk / 31 Def / 31 SpA / 31 SpD / 31 Spe
+ EVs: 252 HP / 6 SpA / 252 SpD
+ - Toxic
+ - Aerial Ace
+ - Protect
+ - Steel Wing
+ 
+ Aron
+ Adamant Nature
+ Level: 4
+ IVs: 31 HP / 31 Atk / 31 Def / 31 SpA / 31 SpD / 31 Spe
+ EVs: 252 Atk / 252 SpA / 6 SpD
+ - Thunder
+ - Protect
+ - Solar Beam
+ - Dragon Claw

New Difficulty Levels

If a developer adds a new difficulty level, the defined property in the .party files will need to match.

Example

Constant Name	`trainerproc` Definition
`DIFFICULTY_EASY`	Difficulty: Easy
`DIFFICULTY_NORMAL`	Difficulty: Normal
`DIFFICULTY_HARD`	Difficulty: Hard
`DIFFICULTY_WEENIEHUTJR`	Difficulty: WeenieHutJr
`DIFFICULTY_WILD`	Difficulty: Wild

Defining Difficulty for Slide Messages

Slide messages work in a similar way in src/battle_message.c.

static const struct TrainerSlide sTrainerSlides[DIFFICULTY_COUNT][TRAINERS_COUNT] =
{
    [DIFFICULTY_NORMAL] =
    {
   		{
+	        .trainerId = TRAINER_WALLY_VR_2,
+	        .msgLastSwitchIn = sText_AarghAlmostHadIt,
    	},
    },
    [DIFFICULTY_EASY] =
    {
   		{
+	        .trainerId = TRAINER_WALLY_VR_2,
+	        .msgLastSwitchIn = sText_123Poof,
    	},
    },
    [DIFFICULTY_HARD] =
    {
   		{
+	        .trainerId = TRAINER_WALLY_VR_2,
+	        .msgLastSwitchIn = sText_PowderExplodes,
    	},
    },
};

Fallback

If a Trainer is called for the current difficulty and that Trainer does not have an entry for that difficulty, the game will fallback on the version defined for DIFFICULTY_NORMAL.

Testing

Clean Branch

You can recreate this branch by applying a patch or pulling the repo. From a clean version of expansion's upcoming, you can either:

Patch

wget https://files.catbox.moe/bg2ywt.patch -O difficulty.patch ; git apply difficulty.patch ; rm difficulty.patch

Repo

git remote add psf-expansion https://github.com/PokemonSanFran/pokeemerald-expansion/ ; git pull psf-expansion difficultySystem

Manual Tests

After replicating the branch, to recreate my testing environment, you can either directly download the debugging changes.

Download

`B_VAR_DIFFICULTY` == `VAR_UNUSED_0x404E`

wget https://files.catbox.moe/b6x9q5.party -O src/data/trainers.party ; \
wget https://files.catbox.moe/vj4g6n.party -O src/data/battle_partners.party ; \
wget https://files.catbox.moe/05ifz4.c -O src/battle_message.c ; \
wget https://files.catbox.moe/oxwlvj.inc -O data/scripts/debug.inc ; \
wget https://files.catbox.moe/5s17gx.h -O include/config/battle.h ;

`B_VAR_DIFFICULTY` == `0`

wget https://files.catbox.moe/b6x9q5.party -O src/data/trainers.party ; \
wget https://files.catbox.moe/vj4g6n.party -O src/data/battle_partners.party ; \
wget https://files.catbox.moe/05ifz4.c -O src/battle_message.c ; \
wget https://files.catbox.moe/oxwlvj.inc -O data/scripts/debug.inc ; \

Verified Scenarios

After compiling the game and starting a new save, the first videos show:

Decrease Difficulty from DIFFICULTY_NORMAL to DIFFICULTY_EASY. (Script 1)
Increase Difficulty from DIFFICULTY_NORMAL. (Script 2)
Start a battle with a Partner (Hard defined) versus a Opponent A (Hard defined) and Opponent B (Hard not defined). (Script 3)
Set Difficulty to DIFFICULTY_MIN. (Script 4)
Attempt to decrease difficulty from DIFFICULTY_MIN. (Script 5)
Start a battle with a Partner (Normal defined) versus a Opponent A (Easy defined) and Opponent B (Easy not defined). (Script 6)
Challenge the Battle Tower, complete a two battles. (Script 6)

There is a second video that shows a battle against Maxie HARD and Maxie EASY to show off the changes in battle messages.

`B_VAR_DIFFICULTY` == `VAR_UNUSED_0x404E`

test.mp4

slideon.mp4

`B_VAR_DIFFICULTY` == `0`

off.mp4

slideoff.mp4

Things to note in the release changelog:

trainers.h has changed with this PR. If you're using that instead of trainers.party, reject incoming changes and replace [TRAINER_ with [DIFFICULTY_NORMAL][TRAINER_.

People who collaborated with me in this PR

@TheSylphIsIn is the original author, @mrgriffin was instrumental in getting this to work with trainerproc, @hedara90 wrote tests.

Discord Contact Info

I am pkmnsnfrn on Discord, there is a a discussion thread.

…t trainers

pkmnsnfrn · 2024-09-08T18:16:41Z

The remarks about encapsulation would probably remove the need to access someStruct[difficulty] all the time.

fwiw those are in expansion already, I just modified them to use the new substruct

AlexOn1ine · 2024-09-25T15:34:53Z

Thoughts on having one trainer (trainer flag) per file? so you would have trainer files like that: trainer/trainer_name.party. Reason for the suggestion is because if someone has 3 difficulty levels for each trainer it could get messy real fast.

pkmnsnfrn · 2024-09-25T15:41:04Z

Thoughts on having one trainer (trainer flag) per file? so you would have trainer files like that: trainer/trainer_name.party. Reason for the suggestion is because if someone has 3 difficulty levels for each trainer it could get messy real fast.

I certainly don't mind spitting up into smaller files, but unfortunately, I think opponent ID can make things tricky for things like rematches, where ideally TRAINER_DUSTY and TRAINER_DUSTY_2 are in the same file.

Splitting them up would also triple the time take to run preproc (not a blocker imho, but FYI)

(I also don't know how to split them up.)

src/data/trainers.h

mrgriffin · 2024-10-09T08:14:53Z

I'm probably missing something, but I'm surprised that there isn't a change in test/battle/trainer_control.c to account for these arrays now being indexed by difficulty, and a Difficulty: ... line in test/battle/trainer_control.party.

Maybe the problem is that .party files don't get rebuilt if trainerproc changes. I think this is a general problem with our Makefile, generated files could say that they depend on the tool that generates them. Maybe something like would do the trick for trainerproc:

-%.h: %.party tools ; $(CPP) $(CPPFLAGS) -traditional-cpp - < $< | $(TRAINERPROC) -o $@ -i $< -
+%.h: %.party tools $(TRAINERPROC) ; $(CPP) $(CPPFLAGS) -traditional-cpp - < $< | $(TRAINERPROC) -o $@ -i $<

pkmnsnfrn · 2024-10-09T12:57:18Z

I'm probably missing something, but I'm surprised that there isn't a change in test/battle/trainer_control.c to account for these arrays now being indexed by difficulty, and a Difficulty: ... line in test/battle/trainer_control.party.

Maybe the problem is that .party files don't get rebuilt if trainerproc changes. I think this is a general problem with our Makefile, generated files could say that they depend on the tool that generates them. Maybe something like would do the trick for trainerproc:
-%.h: %.party tools ; $(CPP) $(CPPFLAGS) -traditional-cpp - < $< | $(TRAINERPROC) -o $@ -i $< -
+%.h: %.party tools $(TRAINERPROC) ; $(CPP) $(CPPFLAGS) -traditional-cpp - < $< | $(TRAINERPROC) -o $@ -i $< 

To be clear, you're saying "hey, tests shouldn't have passed with this change"? I assumed that them passing meant that my fallback to DIFFCULTY_NORMAL was working correctly.

mrgriffin · 2024-10-09T13:04:55Z

To be clear, you're saying "hey, tests shouldn't have passed with this change"? I assumed that them passing meant that my fallback to DIFFCULTY_NORMAL was working correctly.

That's what I thought, yeah. I'd have thought that we'd at least need a 2D trainers array in the tests. You're right about the fallback though, the .party file shouldn't need to change (but maybe it's worth adding an explicit Difficulty: Normal for documentation purposes?).

But I checked out your PR locally and it seemed to work fine, so my assumption was wrong 😅

…/github.com/rh-hideout/pokeemerald-expansion/pull/5337\#issuecomment-2402280930

Co-authored-by: Martin Griffin <[email protected]>

include/difficulty.h

fix: type confusion of NativeFunc pointers

…h-hideout#5337 (comment)

…deout#5337 (comment)

…eout/pokeemerald-expansion/pull/5337\#discussion_r1818769414

hedara90 · 2024-12-18T08:36:04Z

Is it possible to implement this without changing trainers.h?

hedara90

Some things, I haven't looked at it in more depth yet.

tools/trainerproc/main.c

test/battle/trainer_control.party

…h-hideout#5337 (comment) Fixed indenting for difficulty struct per rh-hideout#5337 (comment) Added automated test for difficulty per https://discord.com/channels/419213663107416084/1207720924414087168/1319255404265472043

hedara90 · 2024-12-29T15:42:26Z

I would add the "Things to note in the changelog" heading to the PR body.
Primarily with a warning about trainers.h containing changes and for people who use that to ignore incoming changes and to fix it with sed.

## Things to note in the release changelog:
- `trainers.h` has changed with this PR. If you're using that instead of `trainers.party`, reject incoming changes and replace `[TRAINER_` with `[DIFFICULTY_NORMAL][TRAINER_`.

pkmnsnfrn added 24 commits August 31, 2024 20:32

Added difficulty constants

74f33af

first compile version

c77b30c

Added GetTrainerDifficultyLevel

ec690da

GetTrainerEncounterMusicId fixed

5fd9196

Fixed gBattlePartners

4dacc2e

Improve trainerproc

37a485b

Convert partners to enum

07a15c2

removed preproc

25c1068

Got trainerproc with difficulty working

4319167

Modified trainerproc to add new structs

5bbb109

Added difficulty to trainer slides

ea6f460

Added seperate difficulty files

e28b1f3

Rewrote logic so easy could be before normal

f23027e

Added script macros

f39a8cd

Added DIFFICULTY_NORMAL and new game functions

a835816

converted to strings

6a0dfb9

Added notes for Mgriffin

d9000bd

first prototype of string version

41c806a

Dynamic version working

b8b98c5

Updated party files

be16d64

Updated party files

33cfc96

Added constants for difficulty

749f69e

Cleaned up trainerproc

b760f2a

Merged in upcoming

278b8c7

pkmnsnfrn requested a review from SBird1337 September 7, 2024 20:36

pkmnsnfrn added 2 commits September 7, 2024 16:07

Changed functioality so that difficulty structs are not built for tes…

3562d54

…t trainers

Extended comment to prevent compilation issues

151d8e1

pkmnsnfrn added category: battle-mechanic Pertains to battle mechanics new-feature Adds a feature type: BREAKING Not to be merged lightly, needs to be reviewed labels Sep 8, 2024

Merge branch 'upcoming' into difficultySystem

eee12c4

Merge branch 'upcoming' into difficultySystem

47fefaa

mrgriffin reviewed Oct 9, 2024

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pkmnsnfrn and others added 3 commits October 11, 2024 11:24

Added explicit declaration of difficulty to test trainers per https:/…

8d071e4

…/github.com/rh-hideout/pokeemerald-expansion/pull/5337\#issuecomment-2402280930

Merge branch 'upcoming' into difficultySystem

91f27d5

fix: type confusion of NativeFunc pointers

2c28653

SBird1337 previously approved these changes Oct 24, 2024

View reviewed changes

Update src/difficulty.c

a8032f9

Co-authored-by: Martin Griffin <[email protected]>

mrgriffin reviewed Oct 24, 2024

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sbird and others added 2 commits October 24, 2024 05:30

fixup: naming convention

15eea86

Merge pull request #4 from SBird1337/sbird/patch-difficulty

032d7d6

fix: type confusion of NativeFunc pointers

pkmnsnfrn dismissed SBird1337’s stale review via 032d7d6 October 24, 2024 13:02

pkmnsnfrn added 4 commits October 27, 2024 10:50

Collapsed gTrainers to print difficulty and trainer id together per r…

2d495cf

…h-hideout#5337 (comment)

Replaced u32 difficult with enum DifficultyLevel difficulty per rh-hi…

e78c983

…deout#5337 (comment)

Merged in upcoming

50d8c7a

Changed all u32 to enum DifficultyLevel per https://github.com/rh-hid…

d896070

…eout/pokeemerald-expansion/pull/5337\#discussion_r1818769414

hedara90 reviewed Dec 18, 2024

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pkmnsnfrn and others added 3 commits December 19, 2024 05:58

Merge branch 'upcoming' into difficultySystem

5a829ca

Added patch to fix failing tests

b6cc3e1

pkmnsnfrn added the type: big feature A feature with big diffs and / or high impact / subjectivity / pervasiveness label Dec 20, 2024

hedara90 mentioned this pull request Dec 29, 2024

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Adds B_VAR_DIFFICULTY and related functions READ DESC #5337

Adds B_VAR_DIFFICULTY and related functions READ DESC #5337

pkmnsnfrn commented Sep 7, 2024 •

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Adds B_VAR_DIFFICULTY and related functions READ DESC #5337

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Adds B_VAR_DIFFICULTY and related functions READ DESC #5337

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pkmnsnfrn commented Sep 7, 2024 • edited Loading

DO NOT MERGE

Description

Details

Adding New Difficulty Levels

Constants

DIFFICULTY_MIN

DIFFICULTY_MAX

Defining Difficulty for Trainers and Partners

New Difficulty Levels

Example

Defining Difficulty for Slide Messages

Fallback

Testing

Clean Branch

Patch

Repo

Manual Tests

Download

B_VAR_DIFFICULTY == VAR_UNUSED_0x404E

B_VAR_DIFFICULTY == 0

Verified Scenarios

B_VAR_DIFFICULTY == VAR_UNUSED_0x404E

B_VAR_DIFFICULTY == 0

Things to note in the release changelog:

People who collaborated with me in this PR

Discord Contact Info

pkmnsnfrn commented Sep 8, 2024

AlexOn1ine commented Sep 25, 2024

pkmnsnfrn commented Sep 25, 2024

mrgriffin commented Oct 9, 2024

pkmnsnfrn commented Oct 9, 2024

mrgriffin commented Oct 9, 2024

hedara90 commented Dec 18, 2024

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hedara90 commented Dec 29, 2024

pkmnsnfrn commented Sep 7, 2024 •

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`DIFFICULTY_MIN`

`DIFFICULTY_MAX`

`B_VAR_DIFFICULTY` == `VAR_UNUSED_0x404E`

`B_VAR_DIFFICULTY` == `0`

`B_VAR_DIFFICULTY` == `VAR_UNUSED_0x404E`

`B_VAR_DIFFICULTY` == `0`