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GetOppositeDirection

This commit is contained in:
PikalaxALT 2017-09-16 23:03:04 -04:00
parent 9514206969
commit 0e3dbf3235
2 changed files with 14 additions and 30 deletions
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30
asm/field_map_obj.s
View File

@ -5,36 +5,6 @@
.text
thumb_func_start GetOppositeDirection
@ u8 GetOppositeDirection(u8 direction)
GetOppositeDirection: @ 8093800
push {r4,lr}
sub sp, 0x8
lsls r0, 24
lsrs r4, r0, 24
ldr r1, =gUnknown_0850DC27
mov r0, sp
movs r2, 0x8
bl memcpy
subs r1, r4, 0x1
lsls r0, r1, 24
lsrs r0, 24
cmp r0, 0x7
bhi _08093828
mov r2, sp
adds r0, r2, r1
ldrb r0, [r0]
b _0809382A
.pool
_08093828:
adds r0, r4, 0
_0809382A:
add sp, 0x8
pop {r4}
pop {r1}
bx r1
thumb_func_end GetOppositeDirection
thumb_func_start zffu_offset_calc
zffu_offset_calc: @ 8093834
lsls r0, 24

14
src/field_map_obj.c
View File

@ -4058,3 +4058,17 @@ dirn2anim_2(sub_8093750, gUnknown_0850DC13);
dirn2anim_2(sub_809377C, gUnknown_0850DC18);
dirn2anim_2(sub_80937A8, gUnknown_0850DC1D);
dirn2anim_2(d2s_08064034, gUnknown_0850DC22);
extern const u8 gUnknown_0850DC27[8];
u8 GetOppositeDirection(u8 direction)
{
u8 directions[sizeof gUnknown_0850DC27];
memcpy(directions, gUnknown_0850DC27, sizeof gUnknown_0850DC27);
if (direction < 1 || direction > (sizeof gUnknown_0850DC27))
{
return direction;
}
return directions[direction - 1];
}