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split out functions to respecive files and some cleanup

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This commit is contained in:
Seth Barberee 2023-05-08 11:37:34 -07:00
parent a601fd3a08
commit 5a45039c2d
8 changed files with 549 additions and 536 deletions
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14
include/bg.h
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@ -1,6 +1,15 @@
#ifndef GUARD_BG_H
#define GUARD_BG_H
enum
{
BG0,
BG1,
BG2,
BG3,
NUM_BGS
};
struct BGControlStruct
{
u16 padding;
@ -9,6 +18,11 @@ struct BGControlStruct
s16 vofs;
};
extern struct BGControlStruct gBG0Control;
extern struct BGControlStruct gBG1Control;
extern struct BGControlStruct gBG2Control;
extern struct BGControlStruct gBG3Control;
void SetBG0RegOffsets(s32 xoffset, s32 yoffset);
void SetBG1RegOffsets(s32 xoffset, s32 yoffset);
void SetBG2RegOffsets(s32 xoffset, s32 yoffset);

12
include/music.h
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@ -1,6 +1,15 @@
#ifndef GUARD_MUSIC_H
#define GUARD_MUSIC_H
// PMD keeps it's own copy of music players for some reason
struct PMDMusicPlayer
{
u16 unk0;
u16 songIndex;
u16 volume;
bool8 isNotMaxVolume;
};
void StopBGMusicVSync(void);
void StartBGMusicVSync(void);
bool8 IsValidSong(u32 songIndex);
@ -22,6 +31,9 @@ void FadeOutFanfareSE(u16 songIndex, u16 speed);
bool8 IsFanfareSEPlaying(u16 songIndex);
void SoundBiasReset(void);
void SoundBiasSet(void);
void UpdateSound(void);
void SoundVSync(void);
void nullsub_18(void);
void nullsub_19(void);
void nullsub_20(u16 songIndex);

2
ld_script.txt
View File

@ -76,8 +76,10 @@ SECTIONS {
src/file_system.o(.text);
src/main.o(.text);
asm/code_800B5F0.o(.text);
src/code_800B5F0.o(.text);
src/music.o(.text);
src/code_800C9CC.o(.text);
src/bg_control.o(.text);
src/cpu.o(.text);
src/flash.o(.text);
src/code_800D090.o(.text);

125
src/bg_control.c Normal file
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@ -0,0 +1,125 @@
#include "global.h"
#include "input.h"
#include "bg.h"
EWRAM_DATA struct BGControlStruct gBG0Control;
EWRAM_DATA struct BGControlStruct gBG1Control;
EWRAM_DATA struct BGControlStruct gBG2Control;
EWRAM_DATA struct BGControlStruct gBG3Control;
EWRAM_DATA u8 gBldAlpha_CoeffA;
EWRAM_DATA u8 gBldAlpha_CoeffB;
EWRAM_DATA u16 gBldAlpha;
EWRAM_DATA u16 gBldCnt;
EWRAM_DATA u8 gUnknown_202D7FE;
void SetBldAlphaReg(s32 lowAlpha, s32 highAlpha)
{
if(lowAlpha < 0)
{
lowAlpha = 0;
}
else if(lowAlpha > 16)
{
lowAlpha = 16;
}
if(highAlpha < 0)
{
highAlpha = 0;
}
else if(highAlpha > 16)
{
highAlpha = 16;
}
gBldAlpha_CoeffA = lowAlpha;
gBldAlpha_CoeffB = highAlpha;
gBldAlpha = BLDALPHA_BLEND1(gBldAlpha_CoeffA, gBldAlpha_CoeffB);
}
void SetBG0RegOffsets(s32 xoffset, s32 yoffset)
{
gBG0Control.hofs = xoffset;
gBG0Control.vofs = yoffset;
}
void SetBG1RegOffsets(s32 xoffset, s32 yoffset)
{
gBG1Control.hofs = xoffset;
gBG1Control.vofs = yoffset;
}
void SetBG2RegOffsets(s32 xoffset, s32 yoffset)
{
gBG2Control.hofs = xoffset;
gBG2Control.vofs = yoffset;
}
void SetBG3RegOffsets(s32 xoffset, s32 yoffset)
{
gBG3Control.hofs = xoffset;
gBG3Control.vofs = yoffset;
}
void SetBGRegOffsets(s32 reg, u32 xoffset, s32 yoffset)
{
switch (reg) {
default:
case 0: return SetBG0RegOffsets(xoffset, yoffset);
case 1: return SetBG1RegOffsets(xoffset, yoffset);
case 2: return SetBG2RegOffsets(xoffset, yoffset);
case 3: return SetBG3RegOffsets(xoffset, yoffset);
}
}
void SetBGRegXOffset(s32 reg, s32 offset)
{
switch (reg) {
default:
case 0:
gBG0Control.hofs = offset;
break;
case 1:
gBG1Control.hofs = offset;
break;
case 2:
gBG2Control.hofs = offset;
break;
case 3:
gBG3Control.hofs = offset;
break;
}
}
void SetBGRegYOffset(s32 reg, s32 offset)
{
switch (reg) {
default:
case 0:
gBG0Control.vofs = offset;
break;
case 1:
gBG1Control.vofs = offset;
break;
case 2:
gBG2Control.vofs = offset;
break;
case 3:
gBG3Control.vofs = offset;
break;
}
}
void sub_800CD64(s32 r0, u8 r1)
{
gUnknown_202D7FE = r1;
gBG2Control.unk2 = r0 ? 0x8000 : 0;
}
void SetBGOBJEnableFlags(u32 mask)
{
REG_DISPCNT = (REG_DISPCNT & 0xe0ff) | (~(mask << 8) & (DISPCNT_BG_ALL_ON | DISPCNT_OBJ_ON));
}

348
src/code_800B5F0.c Normal file
View File

@ -0,0 +1,348 @@
#include "global.h"
#include "bg.h"
#include "input.h"
#include "music.h"
#include "debug.h"
typedef void (*IntrCallback)(void);
extern IntrCallback gIntrCallbacks[];
struct unkStruct_202D648
{
s16 unk0;
s16 unk2; // Vcount??
IntrCallback unk4; // some function... just making it IntrCallback for now
};
extern struct unkStruct_202D648 gUnknown_202D648[8];
extern struct unkStruct_202D648 gUnknown_202D608[8];
extern u8 gUnknown_202D7FE;
extern u16 gBldCnt;
EWRAM_DATA u8 gUnknown_203B099;
EWRAM_DATA u8 gUnknown_203B09A;
EWRAM_DATA u8 gUnknown_203B09B;
EWRAM_DATA u32 gUnknown_203B09C;
EWRAM_DATA u32 gUnknown_203B0A0;
EWRAM_DATA u32 gUnknown_203B0A4;
EWRAM_DATA u32 gUnknown_203B0A8;
EWRAM_DATA s16 gUnknown_203B0AA;
EWRAM_DATA s16 gUnknown_203B0AC;
EWRAM_DATA s16 gUnknown_203B0AE;
EWRAM_DATA s16 gUnknown_203B0B0;
EWRAM_DATA s16 gUnknown_203B0B2;
extern bool8 EnableInterrupts(void);
extern bool8 DisableInterrupts(void);
void xxx_update_bg_sound_input();
extern void AckInterrupt(u16);
void BlinkSavingIcon();
void UnusedIntrFunc(void)
{
}
void VBlankIntr(void)
{
int index;
gUnknown_203B0A0++;
SoundVSync();
BlinkSavingIcon();
if (gIntrCallbacks[1] != NULL) {
gIntrCallbacks[1]();
}
for(index = 0; index < gUnknown_203B0AA; index++) {
gUnknown_202D648[index] = gUnknown_202D608[index];
}
gUnknown_203B0AC = gUnknown_203B0AA;
gUnknown_203B0AE = -1;
gUnknown_203B0B0 = -1;
gUnknown_203B0B2 = -1;
REG_DISPSTAT = DISPSTAT_VBLANK_INTR | DISPSTAT_VCOUNT_INTR;
if (gUnknown_203B099 == 0) {
UpdateSound();
}
AckInterrupt(INTR_FLAG_VBLANK);
}
// Registers are a little off.. seems to be around the while loop
#ifdef NONMATCHING
void VCountIntr(void)
{
s32 sVar1;
s32 sVar2;
// Hack to get the lsr/asr shifts
sVar2 = REG_VCOUNT << 16;
sVar2 = sVar2 >> 16;
if (gUnknown_203B0AE < 0) {
if (gIntrCallbacks[2] != 0) {
gIntrCallbacks[2]();
}
gUnknown_203B0AE = 0;
}
if (gUnknown_203B0AE < gUnknown_203B0AC) {
sVar1 = gUnknown_202D648[gUnknown_203B0AE].unk2;
while (sVar1 <= sVar2) {
if ( gUnknown_202D648[gUnknown_203B0AE].unk4 != NULL) {
gUnknown_202D648[gUnknown_203B0AE].unk4();
}
gUnknown_203B0AE++;
if (gUnknown_203B0AC >= gUnknown_203B0AE) break;
sVar1 = gUnknown_202D648[gUnknown_203B0AE].unk2;
}
if (gUnknown_203B0AE < gUnknown_203B0AC) {
REG_DISPSTAT = gUnknown_202D648[gUnknown_203B0AE].unk2 << 8 | DISPSTAT_VBLANK_INTR | DISPSTAT_VCOUNT_INTR;
}
}
AckInterrupt(INTR_FLAG_VCOUNT);
}
#else
NAKED
void VCountIntr(void)
{
asm_unified(
"\tpush {r4-r7,lr}\n"
"\tmov r7, r8\n"
"\tpush {r7}\n"
"\tldr r0, _0800BA44\n"
"\tldrh r0, [r0]\n"
"\tlsls r0, 16\n"
"\tasrs r6, r0, 16\n"
"\tldr r0, _0800BA48\n"
"\tmovs r2, 0\n"
"\tldrsh r1, [r0, r2]\n"
"\tadds r7, r0, 0\n"
"\tcmp r1, 0\n"
"\tbge _0800B9B2\n"
"\tldr r0, _0800BA4C\n"
"\tldr r0, [r0, 0x8]\n"
"\tcmp r0, 0\n"
"\tbeq _0800B9AE\n"
"\tbl _call_via_r0\n"
"_0800B9AE:\n"
"\tmovs r0, 0\n"
"\tstrh r0, [r7]\n"
"_0800B9B2:\n"
"\tldr r0, _0800BA50\n"
"\tmovs r3, 0\n"
"\tldrsh r2, [r7, r3]\n"
"\tmovs r3, 0\n"
"\tldrsh r1, [r0, r3]\n"
"\tmov r8, r0\n"
"\tcmp r2, r1\n"
"\tbge _0800BA34\n"
"\tldr r1, _0800BA54\n"
"\tadds r0, r2, 0\n"
"\tlsls r0, 3\n"
"\tadds r0, r1\n"
"\tmovs r3, 0x2\n"
"\tldrsh r0, [r0, r3]\n"
"\tcmp r0, r6\n"
"\tbgt _0800BA10\n"
"\tadds r5, r1, 0\n"
"\tadds r4, r7, 0\n"
"_0800B9D6:\n"
"\tmovs r1, 0\n"
"\tldrsh r0, [r4, r1]\n"
"\tlsls r0, 3\n"
"\tadds r1, r5, 0x4\n"
"\tadds r0, r1\n"
"\tldr r0, [r0]\n"
"\tcmp r0, 0\n"
"\tbeq _0800B9EA\n"
"\tbl _call_via_r0\n"
"_0800B9EA:\n"
"\tldrh r0, [r4]\n"
"\tadds r0, 0x1\n"
"\tstrh r0, [r4]\n"
"\tldr r1, _0800BA50\n"
"\tlsls r0, 16\n"
"\tasrs r0, 16\n"
"\tmovs r2, 0\n"
"\tldrsh r1, [r1, r2]\n"
"\tcmp r0, r1\n"
"\tbge _0800BA34\n"
"\tmovs r3, 0\n"
"\tldrsh r0, [r4, r3]\n"
"\tlsls r0, 3\n"
"\tadds r0, r5\n"
"\tmovs r1, 0x2\n"
"\tldrsh r0, [r0, r1]\n"
"\tldr r7, _0800BA48\n"
"\tcmp r0, r6\n"
"\tble _0800B9D6\n"
"_0800BA10:\n"
"\tmovs r2, 0\n"
"\tldrsh r1, [r7, r2]\n"
"\tmov r3, r8\n"
"\tmovs r2, 0\n"
"\tldrsh r0, [r3, r2]\n"
"\tcmp r1, r0\n"
"\tbge _0800BA34\n"
"\tldr r2, _0800BA58\n"
"\tldr r1, _0800BA54\n"
"\tmovs r3, 0\n"
"\tldrsh r0, [r7, r3]\n"
"\tlsls r0, 3\n"
"\tadds r0, r1\n"
"\tldrh r0, [r0, 0x2]\n"
"\tlsls r0, 8\n"
"\tmovs r1, 0x28\n"
"\torrs r0, r1\n"
"\tstrh r0, [r2]\n"
"_0800BA34:\n"
"\tmovs r0, 0x4\n"
"\tbl AckInterrupt\n"
"\tpop {r3}\n"
"\tmov r8, r3\n"
"\tpop {r4-r7}\n"
"\tpop {r0}\n"
"\tbx r0\n"
"\t.align 2, 0\n"
"_0800BA44: .4byte 0x04000006\n"
"_0800BA48: .4byte gUnknown_203B0AE\n"
"_0800BA4C: .4byte gIntrCallbacks\n"
"_0800BA50: .4byte gUnknown_203B0AC\n"
"_0800BA54: .4byte gUnknown_202D648\n"
"_0800BA58: .4byte 0x04000004"
);
}
#endif
void sub_800BA5C(void)
{
if(gUnknown_203B09A != 0)
{
gUnknown_203B09C++;
xxx_update_bg_sound_input();
}
gUnknown_203B09A = 1;
gUnknown_203B09B = 0;
gUnknown_203B09C = 0;
nullsub_25();
while(REG_VCOUNT > 159){}
gUnknown_203B099 = 1;
VBlankIntrWait();
nullsub_18();
}
void xxx_update_bg_sound_input(void)
{
if(gUnknown_203B09B != 0){
gUnknown_203B09C++;
}
else {
gUnknown_203B09B = 1;
gUnknown_203B09A = 0;
gUnknown_203B09C = 0;
UpdateBGControlRegisters();
if(gUnknown_203B099 != 0)
UpdateSound();
UpdateInput();
gUnknown_203B099 = 0;
gUnknown_203B0A4 = gUnknown_203B0A0;
}
}
void Timer3Intr(void)
{
if(gIntrCallbacks[4])
gIntrCallbacks[4]();
AckInterrupt(INTR_FLAG_TIMER3);
}
// Unused
u32 sub_800BB34(void)
{
return gUnknown_203B0A0;
}
void nullsub_178(void)
{
}
// Unused
void sub_800BB44(void)
{
u16 ie_store;
u16 dispcnt_store;
bool8 interrupt_flag;
while(REG_KEYINPUT != KEYS_MASK){}
interrupt_flag = DisableInterrupts();
while(REG_VCOUNT < 160){}
dispcnt_store = REG_DISPCNT;
REG_DISPCNT = DISPCNT_FORCED_BLANK;
*(vu16 *)BG_PLTT = RGB_WHITE;
ie_store = REG_IE;
REG_IE = INTR_FLAG_KEYPAD | INTR_FLAG_GAMEPAK;
REG_KEYCNT = KEY_AND_INTR | R_BUTTON | L_BUTTON | SELECT_BUTTON; // 0x8304
REG_IME = 1;
SoundBiasReset();
asm("swi 0x3");
SoundBiasSet();
REG_IME = 0;
REG_IE = ie_store;
REG_KEYCNT = 0;
REG_DISPCNT = dispcnt_store;
*(vu16 *)BG_PLTT = RGB_BLACK;
if(interrupt_flag)
EnableInterrupts();
while(REG_KEYINPUT != KEYS_MASK){}
}
void nullsub_17(void)
{
}
void UpdateBGControlRegisters(void)
{
u32 BGCNT_Priority[NUM_BGS];
if(gUnknown_202D7FE == 1)
{
BGCNT_Priority[BG0] = BGCNT_PRIORITY(1);
BGCNT_Priority[BG1] = BGCNT_PRIORITY(2);
BGCNT_Priority[BG2] = BGCNT_PRIORITY(0);
BGCNT_Priority[BG3] = BGCNT_PRIORITY(3);
}
else
{
BGCNT_Priority[BG0] = BGCNT_PRIORITY(0);
BGCNT_Priority[BG1] = BGCNT_PRIORITY(1);
BGCNT_Priority[BG2] = BGCNT_PRIORITY(2);
BGCNT_Priority[BG3] = BGCNT_PRIORITY(3);
}
REG_BG0HOFS = gBG0Control.hofs;
REG_BG0VOFS = gBG0Control.vofs;
REG_BG1HOFS = gBG1Control.hofs;
REG_BG1VOFS = gBG1Control.vofs;
REG_BG2HOFS = gBG2Control.hofs;
REG_BG2VOFS = gBG2Control.vofs;
REG_BG3HOFS = gBG3Control.hofs;
REG_BG3VOFS = gBG3Control.vofs;
REG_BG0CNT = BGCNT_Priority[BG0] | BGCNT_SCREENBASE(12) | BGCNT_CHARBASE(0) | BGCNT_WRAP; // 0x2C00
REG_BG1CNT = BGCNT_Priority[BG1] | BGCNT_SCREENBASE(13) | BGCNT_CHARBASE(0) | BGCNT_WRAP; // 0x2D00
if(gBG2Control.unk2 == 0x8000)
REG_BG2CNT = BGCNT_Priority[BG2] | BGCNT_SCREENBASE(14) | BGCNT_CHARBASE(2) | BGCNT_WRAP; // 0x2E08
else
REG_BG2CNT = BGCNT_Priority[BG2] | BGCNT_SCREENBASE(14) | BGCNT_CHARBASE(0) | BGCNT_WRAP; // 0x2E00
REG_BG3CNT = BGCNT_Priority[BG3] | BGCNT_SCREENBASE(15) | BGCNT_CHARBASE(2) | BGCNT_WRAP;
REG_BLDCNT = gBldCnt;
}

155
src/code_800C9CC.c
View File

@ -1,19 +1,47 @@
#include "global.h"
#include "input.h"
#include "bg.h"
#include "random.h"
void sub_800BA5C();
void xxx_update_bg_sound_input();
extern u16 gRawKeyInput;
extern u32 gUnknown_203B0B8;
extern struct BGControlStruct gBG0Control;
extern struct BGControlStruct gBG1Control;
extern struct BGControlStruct gBG2Control;
extern struct BGControlStruct gBG3Control;
void sub_800CB20(void)
{
sub_800BA5C();
gUnknown_203B0B8++;
if((gRawKeyInput & (A_BUTTON | SELECT_BUTTON)) != 0)
{
Rand32Bit();
}
Rand32Bit();
}
extern u8 gBldAlpha_CoeffA;
extern u8 gBldAlpha_CoeffB;
extern u16 gBldAlpha;
extern u8 gUnknown_202D7FE;
// Unused
u32 sub_800CB50(void)
{
return gUnknown_203B0B8;
}
void nullsub_180(void)
{
}
void xxx_call_update_bg_sound_input(void)
{
xxx_update_bg_sound_input();
}
void nullsub_181(void)
{
}
u32 sub_800CB70(void)
{
return 0;
}
void ReadKeyInput(struct Inputs *r0)
{
@ -53,112 +81,3 @@ void ReadKeyInput(struct Inputs *r0)
gRawKeyInput = keyInput;
}
void SetBldAlphaReg(s32 lowAlpha, s32 highAlpha)
{
if(lowAlpha < 0)
{
lowAlpha = 0;
}
else if(lowAlpha > 16)
{
lowAlpha = 16;
}
if(highAlpha < 0)
{
highAlpha = 0;
}
else if(highAlpha > 16)
{
highAlpha = 16;
}
gBldAlpha_CoeffA = lowAlpha;
gBldAlpha_CoeffB = highAlpha;
gBldAlpha = BLDALPHA_BLEND1(gBldAlpha_CoeffA, gBldAlpha_CoeffB);
}
void SetBG0RegOffsets(s32 xoffset, s32 yoffset)
{
gBG0Control.hofs = xoffset;
gBG0Control.vofs = yoffset;
}
void SetBG1RegOffsets(s32 xoffset, s32 yoffset)
{
gBG1Control.hofs = xoffset;
gBG1Control.vofs = yoffset;
}
void SetBG2RegOffsets(s32 xoffset, s32 yoffset)
{
gBG2Control.hofs = xoffset;
gBG2Control.vofs = yoffset;
}
void SetBG3RegOffsets(s32 xoffset, s32 yoffset)
{
gBG3Control.hofs = xoffset;
gBG3Control.vofs = yoffset;
}
void SetBGRegOffsets(s32 reg, u32 xoffset, s32 yoffset)
{
switch (reg) {
default:
case 0: return SetBG0RegOffsets(xoffset, yoffset);
case 1: return SetBG1RegOffsets(xoffset, yoffset);
case 2: return SetBG2RegOffsets(xoffset, yoffset);
case 3: return SetBG3RegOffsets(xoffset, yoffset);
}
}
void SetBGRegXOffset(s32 reg, s32 offset)
{
switch (reg) {
default:
case 0:
gBG0Control.hofs = offset;
break;
case 1:
gBG1Control.hofs = offset;
break;
case 2:
gBG2Control.hofs = offset;
break;
case 3:
gBG3Control.hofs = offset;
break;
}
}
void SetBGRegYOffset(s32 reg, s32 offset)
{
switch (reg) {
default:
case 0:
gBG0Control.vofs = offset;
break;
case 1:
gBG1Control.vofs = offset;
break;
case 2:
gBG2Control.vofs = offset;
break;
case 3:
gBG3Control.vofs = offset;
break;
}
}
void sub_800CD64(s32 r0, u8 r1)
{
gUnknown_202D7FE = r1;
gBG2Control.unk2 = r0 ? 0x8000 : 0;
}
void SetBGOBJEnableFlags(u32 mask)
{
REG_DISPCNT = (REG_DISPCNT & 0xe0ff) | (~(mask << 8) & (DISPCNT_BG_ALL_ON | DISPCNT_OBJ_ON));
}

2
src/flash.c
View File

@ -3,7 +3,7 @@
#include "flash.h"
#include "memory.h"
extern u8 gFlashEnabled;
EWRAM_DATA u8 gFlashEnabled;
extern FlashIntrFunc *GetInterruptHandler(s32);

427
src/music.c
View File

@ -1,396 +1,23 @@
#include "global.h"
#include "gba/io_reg.h"
#include "m4a.h"
#include "bg.h"
#include "music.h"
#include "input.h"
#include "constants/bg_music.h"
#include "random.h"
extern bool8 EnableInterrupts(void);
extern bool8 DisableInterrupts(void);
extern void AckInterrupt(u16);
extern void nullsub_25(void);
void nullsub_18(void);
void UpdateSound(void);
void nullsub_21(u16);
void sub_800BA5C();
void xxx_update_bg_sound_input();
void SoundVSync();
void BlinkSavingIcon();
typedef void (*IntrCallback)(void);
extern IntrCallback gIntrCallbacks[];
struct unkStruct_202D648
{
s16 unk0;
s16 unk2; // Vcount??
IntrCallback unk4; // some function... just making it IntrCallback for now
};
extern struct unkStruct_202D648 gUnknown_202D648[8];
extern struct unkStruct_202D648 gUnknown_202D608[8];
EWRAM_DATA u16 gBGMusicPlayerState;
EWRAM_DATA u16 gCurrentBGSong;
EWRAM_DATA u16 gQueuedBGSong;
EWRAM_DATA u16 gCurrentFanfareSong;
EWRAM_DATA u16 gFanfareMusicPlayerState;
EWRAM_DATA u16 gMusicTransitionCounter;
EWRAM_DATA bool8 gRestartBGM;
extern struct MusicPlayerInfo gMPlayInfo_BGM; // BGM??
extern u32 gUnknown_203B0A4;
extern u16 gBGMusicPlayerState;
extern u16 gCurrentBGSong;
extern u16 gQueuedBGSong;
extern u16 gCurrentFanfareSong;
extern u16 gFanfareMusicPlayerState;
extern u16 gMusicTransitionCounter;
extern bool8 gRestartBGM;
extern u8 gUnknown_203B099;
extern u8 gUnknown_203B09B;
extern u32 gUnknown_203B09C;
extern u8 gUnknown_203B09A;
extern u32 gUnknown_203B0B8;
extern u16 gRawKeyInput;
extern u32 gUnknown_203B0A0;
extern s16 gUnknown_203B0AA;
extern s16 gUnknown_203B0AC;
extern s16 gUnknown_203B0AE;
extern s16 gUnknown_203B0B0;
extern s16 gUnknown_203B0B2;
// PMD keeps it's own copy of music players for some reason
struct PMDMusicPlayer
{
u16 unk0;
u16 songIndex;
u16 volume;
bool8 isNotMaxVolume;
};
extern struct PMDMusicPlayer gUnknown_3000FD8[8];
extern struct PMDMusicPlayer gUnknown_3000FE8[8];
extern u8 gUnknown_202D7FE;
extern u16 gBldCnt;
extern struct BGControlStruct gBG0Control;
extern struct BGControlStruct gBG1Control;
extern struct BGControlStruct gBG2Control;
extern struct BGControlStruct gBG3Control;
enum
{
BG0,
BG1,
BG2,
BG3,
NUM_BGS
};
void UnusedIntrFunc(void)
{
}
void VBlankIntr(void)
{
int index;
gUnknown_203B0A0++;
SoundVSync();
BlinkSavingIcon();
if (gIntrCallbacks[1] != NULL) {
gIntrCallbacks[1]();
}
for(index = 0; index < gUnknown_203B0AA; index++) {
gUnknown_202D648[index] = gUnknown_202D608[index];
}
gUnknown_203B0AC = gUnknown_203B0AA;
gUnknown_203B0AE = -1;
gUnknown_203B0B0 = -1;
gUnknown_203B0B2 = -1;
REG_DISPSTAT = DISPSTAT_VBLANK_INTR | DISPSTAT_VCOUNT_INTR;
if (gUnknown_203B099 == 0) {
UpdateSound();
}
AckInterrupt(INTR_FLAG_VBLANK);
}
// Registers are a little off.. seems to be around the while loop
#ifdef NONMATCHING
void VCountIntr(void)
{
s32 sVar1;
s32 sVar2;
// Hack to get the lsr/asr shifts
sVar2 = REG_VCOUNT << 16;
sVar2 = sVar2 >> 16;
if (gUnknown_203B0AE < 0) {
if (gIntrCallbacks[2] != 0) {
gIntrCallbacks[2]();
}
gUnknown_203B0AE = 0;
}
if (gUnknown_203B0AE < gUnknown_203B0AC) {
sVar1 = gUnknown_202D648[gUnknown_203B0AE].unk2;
while (sVar1 <= sVar2) {
if ( gUnknown_202D648[gUnknown_203B0AE].unk4 != NULL) {
gUnknown_202D648[gUnknown_203B0AE].unk4();
}
gUnknown_203B0AE++;
if (gUnknown_203B0AC >= gUnknown_203B0AE) break;
sVar1 = gUnknown_202D648[gUnknown_203B0AE].unk2;
}
if (gUnknown_203B0AE < gUnknown_203B0AC) {
REG_DISPSTAT = gUnknown_202D648[gUnknown_203B0AE].unk2 << 8 | DISPSTAT_VBLANK_INTR | DISPSTAT_VCOUNT_INTR;
}
}
AckInterrupt(INTR_FLAG_VCOUNT);
}
#else
NAKED
void VCountIntr(void)
{
asm_unified(
"\tpush {r4-r7,lr}\n"
"\tmov r7, r8\n"
"\tpush {r7}\n"
"\tldr r0, _0800BA44\n"
"\tldrh r0, [r0]\n"
"\tlsls r0, 16\n"
"\tasrs r6, r0, 16\n"
"\tldr r0, _0800BA48\n"
"\tmovs r2, 0\n"
"\tldrsh r1, [r0, r2]\n"
"\tadds r7, r0, 0\n"
"\tcmp r1, 0\n"
"\tbge _0800B9B2\n"
"\tldr r0, _0800BA4C\n"
"\tldr r0, [r0, 0x8]\n"
"\tcmp r0, 0\n"
"\tbeq _0800B9AE\n"
"\tbl _call_via_r0\n"
"_0800B9AE:\n"
"\tmovs r0, 0\n"
"\tstrh r0, [r7]\n"
"_0800B9B2:\n"
"\tldr r0, _0800BA50\n"
"\tmovs r3, 0\n"
"\tldrsh r2, [r7, r3]\n"
"\tmovs r3, 0\n"
"\tldrsh r1, [r0, r3]\n"
"\tmov r8, r0\n"
"\tcmp r2, r1\n"
"\tbge _0800BA34\n"
"\tldr r1, _0800BA54\n"
"\tadds r0, r2, 0\n"
"\tlsls r0, 3\n"
"\tadds r0, r1\n"
"\tmovs r3, 0x2\n"
"\tldrsh r0, [r0, r3]\n"
"\tcmp r0, r6\n"
"\tbgt _0800BA10\n"
"\tadds r5, r1, 0\n"
"\tadds r4, r7, 0\n"
"_0800B9D6:\n"
"\tmovs r1, 0\n"
"\tldrsh r0, [r4, r1]\n"
"\tlsls r0, 3\n"
"\tadds r1, r5, 0x4\n"
"\tadds r0, r1\n"
"\tldr r0, [r0]\n"
"\tcmp r0, 0\n"
"\tbeq _0800B9EA\n"
"\tbl _call_via_r0\n"
"_0800B9EA:\n"
"\tldrh r0, [r4]\n"
"\tadds r0, 0x1\n"
"\tstrh r0, [r4]\n"
"\tldr r1, _0800BA50\n"
"\tlsls r0, 16\n"
"\tasrs r0, 16\n"
"\tmovs r2, 0\n"
"\tldrsh r1, [r1, r2]\n"
"\tcmp r0, r1\n"
"\tbge _0800BA34\n"
"\tmovs r3, 0\n"
"\tldrsh r0, [r4, r3]\n"
"\tlsls r0, 3\n"
"\tadds r0, r5\n"
"\tmovs r1, 0x2\n"
"\tldrsh r0, [r0, r1]\n"
"\tldr r7, _0800BA48\n"
"\tcmp r0, r6\n"
"\tble _0800B9D6\n"
"_0800BA10:\n"
"\tmovs r2, 0\n"
"\tldrsh r1, [r7, r2]\n"
"\tmov r3, r8\n"
"\tmovs r2, 0\n"
"\tldrsh r0, [r3, r2]\n"
"\tcmp r1, r0\n"
"\tbge _0800BA34\n"
"\tldr r2, _0800BA58\n"
"\tldr r1, _0800BA54\n"
"\tmovs r3, 0\n"
"\tldrsh r0, [r7, r3]\n"
"\tlsls r0, 3\n"
"\tadds r0, r1\n"
"\tldrh r0, [r0, 0x2]\n"
"\tlsls r0, 8\n"
"\tmovs r1, 0x28\n"
"\torrs r0, r1\n"
"\tstrh r0, [r2]\n"
"_0800BA34:\n"
"\tmovs r0, 0x4\n"
"\tbl AckInterrupt\n"
"\tpop {r3}\n"
"\tmov r8, r3\n"
"\tpop {r4-r7}\n"
"\tpop {r0}\n"
"\tbx r0\n"
"\t.align 2, 0\n"
"_0800BA44: .4byte 0x04000006\n"
"_0800BA48: .4byte gUnknown_203B0AE\n"
"_0800BA4C: .4byte gIntrCallbacks\n"
"_0800BA50: .4byte gUnknown_203B0AC\n"
"_0800BA54: .4byte gUnknown_202D648\n"
"_0800BA58: .4byte 0x04000004"
);
}
#endif
void sub_800BA5C(void)
{
if(gUnknown_203B09A != 0)
{
gUnknown_203B09C++;
xxx_update_bg_sound_input();
}
gUnknown_203B09A = 1;
gUnknown_203B09B = 0;
gUnknown_203B09C = 0;
nullsub_25();
while(REG_VCOUNT > 159){}
gUnknown_203B099 = 1;
VBlankIntrWait();
nullsub_18();
}
void xxx_update_bg_sound_input(void)
{
if(gUnknown_203B09B != 0){
gUnknown_203B09C++;
}
else {
gUnknown_203B09B = 1;
gUnknown_203B09A = 0;
gUnknown_203B09C = 0;
UpdateBGControlRegisters();
if(gUnknown_203B099 != 0)
UpdateSound();
UpdateInput();
gUnknown_203B099 = 0;
gUnknown_203B0A4 = gUnknown_203B0A0;
}
}
void Timer3Intr(void)
{
if(gIntrCallbacks[4])
gIntrCallbacks[4]();
AckInterrupt(INTR_FLAG_TIMER3);
}
// Unused
u32 sub_800BB34(void)
{
return gUnknown_203B0A0;
}
void nullsub_178(void)
{
}
// Unused
void sub_800BB44(void)
{
u16 ie_store;
u16 dispcnt_store;
bool8 interrupt_flag;
while(REG_KEYINPUT != KEYS_MASK){}
interrupt_flag = DisableInterrupts();
while(REG_VCOUNT < 160){}
dispcnt_store = REG_DISPCNT;
REG_DISPCNT = DISPCNT_FORCED_BLANK;
*(vu16 *)BG_PLTT = RGB_WHITE;
ie_store = REG_IE;
REG_IE = INTR_FLAG_KEYPAD | INTR_FLAG_GAMEPAK;
REG_KEYCNT = KEY_AND_INTR | R_BUTTON | L_BUTTON | SELECT_BUTTON; // 0x8304
REG_IME = 1;
SoundBiasReset();
asm("swi 0x3");
SoundBiasSet();
REG_IME = 0;
REG_IE = ie_store;
REG_KEYCNT = 0;
REG_DISPCNT = dispcnt_store;
*(vu16 *)BG_PLTT = RGB_BLACK;
if(interrupt_flag)
EnableInterrupts();
while(REG_KEYINPUT != KEYS_MASK){}
}
void nullsub_17(void)
{
}
void UpdateBGControlRegisters(void)
{
u32 BGCNT_Priority[NUM_BGS];
if(gUnknown_202D7FE == 1)
{
BGCNT_Priority[BG0] = BGCNT_PRIORITY(1);
BGCNT_Priority[BG1] = BGCNT_PRIORITY(2);
BGCNT_Priority[BG2] = BGCNT_PRIORITY(0);
BGCNT_Priority[BG3] = BGCNT_PRIORITY(3);
}
else
{
BGCNT_Priority[BG0] = BGCNT_PRIORITY(0);
BGCNT_Priority[BG1] = BGCNT_PRIORITY(1);
BGCNT_Priority[BG2] = BGCNT_PRIORITY(2);
BGCNT_Priority[BG3] = BGCNT_PRIORITY(3);
}
REG_BG0HOFS = gBG0Control.hofs;
REG_BG0VOFS = gBG0Control.vofs;
REG_BG1HOFS = gBG1Control.hofs;
REG_BG1VOFS = gBG1Control.vofs;
REG_BG2HOFS = gBG2Control.hofs;
REG_BG2VOFS = gBG2Control.vofs;
REG_BG3HOFS = gBG3Control.hofs;
REG_BG3VOFS = gBG3Control.vofs;
REG_BG0CNT = BGCNT_Priority[BG0] | BGCNT_SCREENBASE(12) | BGCNT_CHARBASE(0) | BGCNT_WRAP; // 0x2C00
REG_BG1CNT = BGCNT_Priority[BG1] | BGCNT_SCREENBASE(13) | BGCNT_CHARBASE(0) | BGCNT_WRAP; // 0x2D00
if(gBG2Control.unk2 == 0x8000)
REG_BG2CNT = BGCNT_Priority[BG2] | BGCNT_SCREENBASE(14) | BGCNT_CHARBASE(2) | BGCNT_WRAP; // 0x2E08
else
REG_BG2CNT = BGCNT_Priority[BG2] | BGCNT_SCREENBASE(14) | BGCNT_CHARBASE(0) | BGCNT_WRAP; // 0x2E00
REG_BG3CNT = BGCNT_Priority[BG3] | BGCNT_SCREENBASE(15) | BGCNT_CHARBASE(2) | BGCNT_WRAP;
REG_BLDCNT = gBldCnt;
}
extern bool8 EnableInterrupts(void);
extern bool8 DisableInterrupts(void);
void nullsub_21(u16);
void InitMusic(void)
{
@ -1261,37 +888,3 @@ void nullsub_21(u16 songIndex)
{
}
void sub_800CB20(void)
{
sub_800BA5C();
gUnknown_203B0B8++;
if((gRawKeyInput & (A_BUTTON | SELECT_BUTTON)) != 0)
{
Rand32Bit();
}
Rand32Bit();
}
// Unused
u32 sub_800CB50(void)
{
return gUnknown_203B0B8;
}
void nullsub_180(void)
{
}
void xxx_call_update_bg_sound_input(void)
{
xxx_update_bg_sound_input();
}
void nullsub_181(void)
{
}
u32 sub_800CB70(void)
{
return 0;
}