ISSOtm

    ld c, LOW(rP1)
    ld a, $20 ; Select D-pad
    ld [$ff00+c], a
REPT 6
    ld a, [$ff00+c]
ENDR
    or $F0 ; Set 4 upper bits (give them consistency)
    ld b, a

    ; Filter impossible D-pad combinations

ISSOtm

    ; 1/2
    ld hl, wMovementVector + 3
    sra [hl]
    dec l ; dec hl
    rr [hl]
    dec l ; dec hl
    sra [hl]
    dec l ; dec hl
    rr [hl]
    call .tryMoving

ISSOtm

.fadeIn
    ld a, [wCurStateFirstFrame]
    and a
    jr z, .notFirstFrame
    ; Assume palettes are properly set (ie. we're fading from the proper solid colors)
    ; Perform first fade immediately
    ld a, 1
    ld [wFadeFrames], a
    ; This is the value that will get added to each color
    ; It'll be decremented just below

ISSOtm

; Here's some technical explanation about Game Boy sample playing:
; The "usual" way of playing sound samples on the Game Boy is to use its wave channel
; Basically, let that channel play its 32 4-bit samples, then refill it
; Problem: to refill the channel, you have to disable it then restart it
; However, when doing so, the "sample buffer" is set to 0 **and not updated**
; This means the channel outputs a spike as its first sample, creating a buzzing sound
;
; Why? That's because of how the Game Boy generates sound: each channel produces
; a digital value between 0 and 15, which is fed to a DAC (Digital to Analog Converter)

ISSOtm

#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>

#include "link/main.h"
#include "link/script.h"
#include "link/section.h"

ISSOtm

#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include <ctype.h>

#include "link/main.h"
#include "link/script.h"
#include "link/section.h"

ISSOtm

template<typename Ts...>
char * reassembleString(Ts... ts) {
    char * fragments[]{ts...};
    size_t size = 0;
    for(size_t i = 0; i < sizeof...(Ts); i++) {
        size += strlen(fragments[i]);
    }
    
    char * output = new char[size + 1];
    char * ptr = output;

ISSOtm

SECTION "Language menu header", ROMX

LanguageMenuHeader::
    db BANK("Language menu")
    dw LanguageMenuInit
    db PADF_START | PADF_DOWN | PADF_UP
    db 0 ; Prevent repeat press
    dw 0, 0, 0, ForceMenuValidation, 0, 0, 0, 0
    db 0 ; Previous item

ISSOtm

    jr z, .noVRAMTransfer ; This JR is out of range
    ld c, a
    ldh a, [hConsoleType]
    and a
    jr z, .GDMA
    ld [wSP], sp
    ldh a, [hVRAMCopySrc]
    ld l, a
    ldh a, [hVRAMCopySrc+1]
    ld h, a

ISSOtm

    push de
    ld [wSP], sp
    ldh a, [hVRAMCopySrc]
    ld l, a
    ldh a, [hVRAMCopySrc+1]
    ld h, a
    ld sp, hl
    ldh a, [hVRAMCopyDest]
    ld l, a
    ldh a, [hVRAMCopyDest+1]