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Avoid repeating the NUM_TMS value

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Rangi 2020-07-06 11:28:51 -04:00
parent 6ad4c26a03
commit 43e0e40d5a
1 changed files with 8 additions and 6 deletions
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14
constants/item_constants.asm
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@ -102,20 +102,22 @@ SAFARI_ROCK EQU $16 ; overload
const_value = $C4 const_value = $C4
; HMs are defined before TMs, so the actual number of TM definitions
; is not yet available. The TM quantity is hard-coded here and must
; match the actual number below.
NUM_TMS EQU 50
add_hm: MACRO add_hm: MACRO
; Defines three constants: ; Defines three constants:
; - HM_\1: the item id, starting at $C4 ; - HM_\1: the item id, starting at $C4
; - \1_TMNUM: the learnable TM/HM flag, starting at 51 ; - \1_TMNUM: the learnable TM/HM flag, starting at 51
; - HM##_MOVE: alias for the move id, equal to the value of \1 ; - HM##_MOVE: alias for the move id, equal to the value of \1
; The first usage also defines HM01 as the first HM item id. ; The first usage also defines HM01 as the first HM item id.
;
; HMs are defined before TMs, so the value of NUM_TMS is not
; available here, and its value of 50 is hard-coded.
IF !DEF(HM01) IF !DEF(HM01)
HM01 EQU const_value HM01 EQU const_value
enum_start 51 ; NUM_TMS + 1 enum_start NUM_TMS + 1
ENDC ENDC
HM_VALUE EQU __enum__ - 50 ; __enum__ - NUM_TMS HM_VALUE EQU __enum__ - NUM_TMS
IF HM_VALUE < 10 IF HM_VALUE < 10
MOVE_FOR_HM EQUS "HM0{d:HM_VALUE}_MOVE" MOVE_FOR_HM EQUS "HM0{d:HM_VALUE}_MOVE"
ELSE ELSE
@ -206,7 +208,7 @@ ENDM
add_tm ROCK_SLIDE ; $F8 add_tm ROCK_SLIDE ; $F8
add_tm TRI_ATTACK ; $F9 add_tm TRI_ATTACK ; $F9
add_tm SUBSTITUTE ; $FA add_tm SUBSTITUTE ; $FA
NUM_TMS EQU const_value - TM01 assert NUM_TMS == const_value - TM01, "NUM_TMS ({d:NUM_TMS}) does not match the number of add_tm definitions"
; 50 TMs + 5 HMs = 55 learnable TM/HM flags per Pokémon. ; 50 TMs + 5 HMs = 55 learnable TM/HM flags per Pokémon.
; These fit in 7 bytes, with one unused bit left over. ; These fit in 7 bytes, with one unused bit left over.