Updated Hard coded logic (markdown)

1 files changed, 19 insertions, 0 deletions

diff --git a/Hard-coded-logic.md b/Hard-coded-logic.md
index c83ccf8..c1c067a 100644
--- a/Hard-coded-logic.md
+++ b/Hard-coded-logic.md
@@ -11,6 +11,7 @@ Much of the game logic can be changed via the files in [data/](../blob/master/da
 - [Trainer classes with different battle music](#trainer-classes-with-different-battle-music)
 - [`RIVAL1`'s first Pokémon has no held item](#rival1s-first-pokémon-has-no-held-item)
 - [`RIVAL1` and `RIVAL2` don't print their trainer class in battle](#rival1-and-rival2-dont-print-their-trainer-class-in-battle)
+- [Vital Throw always goes last](#vital-throw-always-goes-last)
 
 
 ## Tilesets that have per-mapgroup roofs
@@ -270,3 +271,21 @@ This is caused by `PlaceEnemysName` in [home/text.asm](../blob/master/home/text.
 	cp RIVAL2
 	jr z, .rival
 ```
+
+
+## Vital Throw always goes last
+
+Most move effects' priorities are specified in `MoveEffectPriorities` in [data/moves/effects_priorities.asm](../blob/master/data/moves/effects_priorities.asm).
+...except for Vital Throw. This move shares its effect with a lot of other moves, and they couldn't be bothered to make a new move effect ID for it like `EFFECT_PRIORITY_HIT`, so they hard-coded this case, in `GetMovePriority` of [engine/battle/core.asm](../blob/master/engine/battle/core.asm):
+
+```asm
+GetMovePriority:
+; Return the priority (0-3) of move a.
+
+	ld b, a
+
+	; Vital Throw goes last.
+	cp VITAL_THROW
+	ld a, 0
+	ret z
+```
\ No newline at end of file