pokecrystal-board/engine/routines/getpokeballwobble.asm
Remy Oukaour 7d4486e6a3 Remove all code from main.asm (some labeled INCBINs, like out-of-context graphics, are still present)
engine/routines/ stores isolated out-of-context routines as individual files. It might be preferable later to append them to their related engine/ files in unique little SECTIONs, relying on the linkerscript to place them appropriately; or some other organization method. In the meantime, they're now easily findable apart from main.asm's other content.
2017-12-24 19:35:35 -05:00

89 lines
1.2 KiB
NASM
Executable File

GetPokeBallWobble: ; f971 (3:7971)
; Returns whether a Poke Ball will wobble in the catch animation.
; Whether a Pokemon is caught is determined beforehand.
push de
ld a, [rSVBK]
ld d, a
push de
ld a, 1 ; BANK(Buffer2)
ld [rSVBK], a
ld a, [Buffer2]
inc a
ld [Buffer2], a
; Wobble up to 3 times.
cp 3 + 1
jr z, .finished
ld a, [wWildMon]
and a
ld c, 0 ; next
jr nz, .done
ld hl, .WobbleProbabilities
ld a, [Buffer1]
ld b, a
.loop
ld a, [hli]
cp b
jr nc, .checkwobble
inc hl
jr .loop
.checkwobble
ld b, [hl]
call Random
cp b
ld c, 0 ; next
jr c, .done
ld c, 2 ; escaped
jr .done
.finished
ld a, [wWildMon]
and a
ld c, 1 ; caught
jr nz, .done
ld c, 2 ; escaped
.done
pop de
ld e, a
ld a, d
ld [rSVBK], a
ld a, e
pop de
ret
.WobbleProbabilities: ; f9ba
; catch rate, chance of wobbling / 255
; nLeft/255 = (nRight/255) ** 4
db 1, 63
db 2, 75
db 3, 84
db 4, 90
db 5, 95
db 7, 103
db 10, 113
db 15, 126
db 20, 134
db 30, 149
db 40, 160
db 50, 169
db 60, 177
db 80, 191
db 100, 201
db 120, 211
db 140, 220
db 160, 227
db 180, 234
db 200, 240
db 220, 246
db 240, 251
db 254, 253
db 255, 255