Omnidirectional jump tile

.thumb

.global AnyDirectionJumptile
.equ rom, 0x08000001
.equ offset, 0xXXXXXX

/*
Behavior bytes:
0x7F = able to jump in any direction (only on height 0x0 & 0x10)
0x7E = able to jump up and down
0x7D = able to jump left and right
*/

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

.org 0x59AF6
    cmp r0, #0x7D
    beq 0x59B02

.org 0x59B0A
    cmp r0, #0x7D
    beq 0x59B16

.org 0x59B1E
    cmp r0, #0x7E
    beq 0x59B2A

.org 0x59B32
    cmp r0, #0x7E
    beq 0x59B3E

.org 0x6812C
    bx r2

.org 0x68144
    .word main + rom

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

.org offset
main:
    cmp r0, #0x7F   @behavior byte
    beq CheckJump
    ldr r2, =(0x083A705C)
    lsl r1, r4, #0x2
    ldr r3, =(0x0806812E|1)
    bx r3

CheckJump:
    bl CanPlayerJump
    cmp r0, #0x0
    beq CantJump
CanJump:
    ldr r0, =(0x08068148|1)
    bx r0

CantJump:
    ldr r0, =(0x0806813E|1)
    bx r0

CanPlayerJump:
    ldr r1, npc_states
    ldrb r0, [r1, #0xB]     @player height
    mov r1, #0xF
    and r0, r1              @lower 4 bits are height
    cmp r0, #0x4            @movement permission 0x10
    beq TheyCan
    cmp r0, #0x0            @movement permission 0x0
    beq TheyCan
TheyCant:
    mov r0, #0x0
    bx lr

TheyCan:
    mov r0, #0x1
    bx lr

.align 2
    npc_states:     .word 0x02036E38