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dos_add_hole_to_map_doors.asm
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dos_add_hole_to_map_doors.asm
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.nds
.relativeinclude on
.erroronwarning on
; This adds a single pixel hole to all doors drawn on the map to increase visibility, like in PoR and OoE.
@Overlay41Start equ 0x02308920
@FreeSpace equ @Overlay41Start + 0x108
.open "ftc/arm9.bin", 02000000h
.org 0x020240B0
; Handles drawing left/right doors on the left edge of even-numbered columns.
bne @DrawLeftRightDoorEvenColumn
nop
nop
.org 0x020240FC
; Handles drawing left/right doors on the left edge of odd-numbered columns.
bne @DrawLeftRightDoorOddColumn
nop
nop
.org 0x020242A8
; Handles drawing up/down doors in even-numbered columns.
; 3 is the index of the door color in the palette, while 1 is the index of the room fill color in the palette.
.word 0x00003133
.org 0x020242B4
; Handles drawing up/down doors in odd-numbered columns.
.word 0x31330000
.close
.open "ftc/overlay9_41", @Overlay41Start
.org @FreeSpace
@DrawLeftRightDoorEvenColumn:
cmp r4, 2 ; On the center pixel of an even-numbered row, skip drawing the door pixel
beq 2024138h
cmp r4, 6 ; On the center pixel of an odd-numbered row, skip drawing the door pixel
beq 2024138h
; If we're not on a center pixel, simply draw the door pixel like the original code did and return.
orr r0, r0, 3h
str r0, [r5, r4, lsl 2h]
b 2024138h
@DrawLeftRightDoorOddColumn:
cmp r4, 2 ; On the center pixel of an even-numbered row, skip drawing the door pixel
beq 2024138h
cmp r4, 6 ; On the center pixel of an odd-numbered row, skip drawing the door pixel
beq 2024138h
; If we're not on a center pixel, simply draw the door pixel like the original code did and return.
orr r0, r0, 30000h
str r0, [r5, r4, lsl 2h]
b 2024138h
.close