pokecrystal-board/docs/text_commands.md
2019-11-03 12:48:54 -05:00

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# Text Commands
Defined in [macros/scripts/text.asm](https://github.com/pret/pokecrystal/blob/master/macros/scripts/text.asm) and [home/text.asm:TextCommands](https://github.com/pret/pokecrystal/blob/master/home/text.asm).
## `$00`: `text_start`
Start writing text until `"@"`. The text can use [control characters](#control-characters).
## `$01`: <code>text_ram <i>address</i></code>
Write text from a RAM address.
## `$02`: <code>text_bcd <i>address</i>, <i>flags</i></code>
Write [BCD][bcd] from an address, typically RAM.
[bcd]: https://en.wikipedia.org/wiki/Binary-coded_decimal
## `$03`: <code>text_move <i>address</i></code>
Move to a new tile.
## `$04`: <code>text_box <i>address</i>, <i>height</i>, <i>width</i></code>
Draw a box.
## `$05`: `text_low`
Write text at (1, 16).
## `$06`: `text_promptbutton`
Wait for button press; show arrow.
## `$07`: `text_scroll`
Pushes text up two lines and sets the `bc` cursor to the border tile below the
first character column of the text box.
## `$08`: `text_asm`
Start interpreting assembly code.
## `$09`: <code>text_decimal <i>address</i>, <i>bytes</i>, <i>digits</i></code>
Read *bytes* bytes from *address* and print them as a *digits*-digit number.
## `$0A`: `text_pause`
Pause for 30 frames unless A or B is pressed.
## `$0B`: `sound_dex_fanfare_50_79`
Play `SFX_DEX_FANFARE_50_79`.
## `$0C`: <code>text_dots <i>n</i></code>
Print *n* `"…"`s, pausing for 10 frames after each; interrupt if A or B is pressed.
## `$0D`: `text_linkpromptbutton`
Wait for button press; show arrow.
## `$0E`: `sound_dex_fanfare_20_49`
Play `SFX_DEX_FANFARE_20_49`.
## `$0F`: `sound_item`
Play `SFX_ITEM`.
## `$10`: `sound_caught_mon`
Play `SFX_CAUGHT_MON`.
## `$11`: `sound_dex_fanfare_80_109`
Play `SFX_DEX_FANFARE_80_109`.
## `$12`: `sound_fanfare`
Play `SFX_FANFARE`.
## `$13`: `sound_slot_machine_start`
Play `SFX_SLOT_MACHINE_START`.
## `$14`: <code>text_buffer <i>id</i></code>
Write text from one of the following addresses (listed in [data/text_buffers.asm](https://github.com/pret/pokecrystal/blob/master/data/text_buffers.asm)):
0. `StringBuffer3`
1. `StringBuffer4`
2. `StringBuffer5`
3. `StringBuffer2`
4. `StringBuffer1`
5. `EnemyMonNick`
6. `BattleMonNick`
## `$15`: `text_today`
Print the weekday.
## `$16`: <code>text_far <i>address</i></code>
Write text from a different bank.
## `$50`: `text_end`
Stops processing text commands.
# Control characters
These get interpreted in the context of printing regular text. Macros exist to conveniently place the control characters.
## `$00`: <code>text <i>text</i></code>
Start writing text until `"@"`. (Not actually a control character, but shorter than `text_start` followed by `db`.)
## `$4E`, `"<NEXT>"`: <code>next <i>text</i></code>
Move a line down.
## `$4F`, `"<LINE>"`: <code>line <i>text</i></code>
Start writing at the bottom line.
## `$50`, `"@"`: <code>page <i>text</i></code>
Start a new Pokédex page.
## `$51`, `"<PARA>"`: <code>para <i>text</i></code>
Start a new paragraph.
## `$55`, `"<CONT>"`: <code>cont <i>text</i></code>
Scroll to the next line.
## `$57`, `"<DONE>"`: `done`
End a text box.
## `$58`, `"<PROMPT>"`: `prompt`
Prompt the player to end a text box (initiating some other event).