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Type chart data structure (Generation III): Difference between revisions

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The [[type]] chart in the [[Generation III]] Pokémon games are stored in a 336 byte data structure. The data structure consists of a number of 112 3-byte entries:
The [[type]] chart in the [[Generation III]] Pokémon games are stored in a 336-byte data structure.


{|
==Format==
! Offset !! Type !! Notes
The data structure consists of 112 3-byte entries, all of which use the following format. Data whose names are marked with an asterisk (*) have more information below the table.
{| align="center" style="border: 2px solid #88a; background: #f8f8ff; padding: 2px;" class="roundy"
|- style="background-color: #ccccff"
! style="{{roundytl|5px}}" | Name !! Type !! style="{{roundytr|5px}}" | Description
|- style="background-color: #e6e6ff"
| [[Type|Attacking Type]]* || byte || The type of the move being used.
|- style="background-color: #e6e6ff"
| Defending Type* || byte || The type of the Pokémon being attacked.
|- style="background-color: #e6e6ff"
| style="{{roundybl|5px}}" | [[Type#Type effectiveness|Effectiveness]]* || byte || style="{{roundybr|5px}}" | Used to determine the Damage multiplier.
|}
 
==Notes==
===Types===
 
Types are enumerated like this:
 
<div style="columns: 22em 3;">
* 00. {{t|Normal}}
* 01. {{t|Fighting}}
* 02. {{t|Flying}}
* 03. {{t|Poison}}
* 04. {{t|Ground}}
* 05. {{t|Rock}}
* 06. {{t|Bug}}
* 07. {{t|Ghost}}
* 08. {{t|Steel}}
* 09. {{t|???}}
* 10. {{t|Fire}}
* 11. {{t|Water}}
* 12. {{t|Grass}}
* 13. {{t|Electric}}
* 14. {{t|Psychic}}
* 15. {{t|Ice}}
* 16. {{t|Dragon}}
* 17. {{t|Dark}}
</div>
 
===Effectiveness===
{|style="border: 1px solid #88a;" class="roundy"
! Hex
! Dec
! Description
|-
|-
| 0x00 || uint8_t || Attacking Type
|0x00
|0
|Totally ineffective, such as {{t|Electric}} on {{t|Ground}}.
|-
|-
| 0x01 || uint8_t || Defending Type
|0x05
|5
|Not very effective, such as {{t|Water}} on {{t|Grass}}.
|-
|-
| 0x02 || uint8_t || Damage Multiplier - the value 10 represents normal damage, 20 double damage, 5 half damage, 0 no damage.
|0x14
|20
|Supereffective, such as {{t|Ice}} on {{t|Dragon}}
|}
|}


There are two notable entries of note: there are two special entries, which have the damage multipliers set to 0. The first special entry has attacking and defending types 0xFE, and the second special entry has attacking and defending types 0xFF.  The latter must be the last three bytes in the data structure, while the former must appear exactly once somewhere in the data structure. Regular type chart entries placed between the two special entries do not apply when {{m|Foresight}} and {{m|Odor Sleuth}} is in play (in normal gameplay, the entries in this sections of the {{t|Ghost}}-type immunities to {{t|Normal}}- and {{t|Fighting}}-type attacks).
Normally effective attacks, such as {{t|Bug}} on {{t|Normal}}, assume a default value of 0x0A (10), so they don't need to be listed in this table.
 
===Foresight and Odor Sleuth===
 
Near the end of the data structure, there are three bytes that signal the end of the normal part of the table - FE FE 00. There are only two entries after this, and they are {{t|Fighting}} and {{t|Normal}} on {{t|Ghost}}, respectively.
 
However, this area of the table is unique in that all entries in it are ignored after {{m|Foresight}} or {{m|Odor Sleuth}} is used, simply reverting to normal damage.
 
The end of the table is marked with FF FF 00.
 
==Fingerprint==
 
<pre>
00 05 05  // Normal -> Rock    (Not very effective)
00 08 05  // Normal -> Steel    (Not very effective)
0A 0A 05  // Fire  -> Fire    (Not very effective)
0A 0B 05  // Fire  -> Water    (Not very effective)
0A 0C 14  // Fire  -> Grass    (Super effective)
0A 0F 14  // Fire  -> Ice      (Super effective)
0A 06 14  // Fire  -> Bug      (Super effective)
0A 05 05  // Fire  -> Rock    (Not very effective)
0A 10 05  // Fire  -> Dragon  (Not very effective)
0A 08 14  // Fire  -> Steel    (Super effective)
0B 0A 14  // Water  -> Fire    (Super effective)
</pre>


{{data structure}}<br>
{{data structure}}<br>
{{Project Games notice|data structure}}
{{Project Games notice|data structure}}

Latest revision as of 18:45, 28 August 2022

The type chart in the Generation III Pokémon games are stored in a 336-byte data structure.

Format

The data structure consists of 112 3-byte entries, all of which use the following format. Data whose names are marked with an asterisk (*) have more information below the table.

Name Type Description
Attacking Type* byte The type of the move being used.
Defending Type* byte The type of the Pokémon being attacked.
Effectiveness* byte Used to determine the Damage multiplier.

Notes

Types

Types are enumerated like this:

Effectiveness

Hex Dec Description
0x00 0 Totally ineffective, such as Electric on Ground.
0x05 5 Not very effective, such as Water on Grass.
0x14 20 Supereffective, such as Ice on Dragon

Normally effective attacks, such as Bug on Normal, assume a default value of 0x0A (10), so they don't need to be listed in this table.

Foresight and Odor Sleuth

Near the end of the data structure, there are three bytes that signal the end of the normal part of the table - FE FE 00. There are only two entries after this, and they are Fighting and Normal on Ghost, respectively.

However, this area of the table is unique in that all entries in it are ignored after Foresight or Odor Sleuth is used, simply reverting to normal damage.

The end of the table is marked with FF FF 00.

Fingerprint

00 05 05  // Normal -> Rock     (Not very effective)
00 08 05  // Normal -> Steel    (Not very effective)
0A 0A 05  // Fire   -> Fire     (Not very effective)
0A 0B 05  // Fire   -> Water    (Not very effective)
0A 0C 14  // Fire   -> Grass    (Super effective)
0A 0F 14  // Fire   -> Ice      (Super effective)
0A 06 14  // Fire   -> Bug      (Super effective)
0A 05 05  // Fire   -> Rock     (Not very effective)
0A 10 05  // Fire   -> Dragon   (Not very effective)
0A 08 14  // Fire   -> Steel    (Super effective)
0B 0A 14  // Water  -> Fire     (Super effective)


Data structure in the Pokémon games
General Character encoding
Generation I Pokémon species • Pokémon • Poké Mart • Character encoding • Save
Generation II Pokémon species • Pokémon • Trainer • Character encoding (Korean) • Save
Generation III Pokémon species (Pokémon evolution • Pokédex • Type chart)
Pokémon (substructures) • Move • Contest • Contest move • Item
Trainer Tower • Battle Frontier • Character encoding • Save
Generation IV Pokémon species (Pokémon evolution • Learnsets)
Pokémon • Save • Character encoding
Generation V–present Character encoding
Generation VIII Save
TCG GB and GB2 Character encoding


Project Games logo.png This data structure article is part of Project Games, a Bulbapedia project that aims to write comprehensive articles on the Pokémon games.
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