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Document intro sequence code

This commit is contained in:
Marcus Huderle 2020-08-15 11:03:41 -05:00
parent 76aa792c35
commit bb76c4d0de
7 changed files with 157 additions and 129 deletions
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3
data/data_081320FC.s
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@ -4,9 +4,6 @@
.section .rodata
.align 2
gUnk_081320FC:: @ 081320FC
.incbin "baserom.gba", 0x1320FC, 0x0000010
gUnk_0813210C:: @ 0813210C
.incbin "baserom.gba", 0x13210C, 0x0000113

5
include/functions.h
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@ -167,15 +167,10 @@ extern void sub_080AF2E4(void);
extern void sub_0805ADD8(u32);
extern void sub_0804F578(void);
extern void sub_08059994(void);
extern u32 sub_080AD84C();
extern void LoadGfxGroup(u32);
extern s32 sub_0801CFA8(u32);
extern void sub_080A3210();
extern void sub_080AD6AC();
extern void sub_080AD76C(void);
extern void sub_080AD644();
extern void sub_080ADA14(u32, u32);
extern void sub_080AD89C();
extern void sub_0801E1B8(u32, u32);
extern void sub_0801E1EC(s32, s32, s32);
extern void sub_08050008(void);

1
include/menu.h
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@ -40,4 +40,5 @@ typedef struct {
} Menu;
extern Menu gMenu;
#endif

2
include/structures.h
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@ -28,7 +28,7 @@ typedef struct {
typedef struct {
u8 filler0[0x4];
u8 field_0x4;
u8 field_0x5;
u8 listenForKeyPresses;
} struct_02000010;
extern struct_02000010 gUnk_02000010;

1
linker.ld
View File

@ -17,6 +17,7 @@ SECTIONS {
. = 0x0000005C; gUnk_0200005C = .;
. = 0x00000070; gUnk_02000070 = .;
. = 0x00000080; gMenu = .;
. = 0x00000080; gIntroState = .;
. = 0x00000090; gUnk_02000090 = .;
. = 0x000000B0; gUnk_020000B0 = .;
. = 0x000000C0; gUnk_020000C0 = .;

272
src/introSetTransition.c
View File

@ -7,24 +7,61 @@
#include "screen.h"
#include "structures.h"
static void sub_080AD3F4(void);
static void sub_080AD474(void);
static void sub_080AD670(void);
static void sub_080AD834(void);
typedef struct {
u8 filler0[0x4];
u8 gameLanguage;
u8 state;
u8 subState;
u8 filler7[0x1];
u16 timer;
u8 fillerA[0x6];
u8 lightRaysPaletteGroup;
u8 lightRaysAlphaBlendIndex;
u8 counter;
u8 filler13[0x19];
int swordBgScaleRatio;
} IntroState;
static void (*const gUnk_081320F0[])(void) = {
sub_080AD3F4,
sub_080AD474,
sub_080AD834,
extern IntroState gIntroState;
enum {
ADVANCE_NONE,
ADVANCE_TIMER_EXPIRED,
ADVANCE_KEY_PRESSED,
};
extern const u16 gUnk_081320FC[];
static void HandleNintendoCapcomLogos(void);
static void HandleTitlescreen(void);
static void UpdateSwordBgAffineData(void);
static void ExitTitlescreen(void);
static void HandleJapaneseTitlescreenAnimationIntro(void);
static void HandleTitlescreenAnimationIntro(void);
static u32 GetAdvanceState(void);
static void UpdateLightRays(void);
static void UpdatePressStartIcon(void);
u32 IntroSetTransition(u32 transition)
static void (*const sIntroSequenceHandlers[])(void) = {
HandleNintendoCapcomLogos,
HandleTitlescreen,
ExitTitlescreen,
};
static const u16 sLightRaysAlphaBlends[] = {
BLDALPHA_BLEND(9, 9),
BLDALPHA_BLEND(8, 10),
BLDALPHA_BLEND(7, 11),
BLDALPHA_BLEND(6, 12),
BLDALPHA_BLEND(5, 13),
BLDALPHA_BLEND(6, 12),
BLDALPHA_BLEND(7, 11),
BLDALPHA_BLEND(8, 10),
};
static u32 IntroSetTransition(u32 transition)
{
gUnk_02032EC0.transitionType = transition;
gUnk_03001000.funcIndex = 2;
_DmaZero(&gMenu, sizeof(gMenu));
_DmaZero(&gIntroState, sizeof(gIntroState));
DoFade(7, 8);
}
@ -38,7 +75,7 @@ void HandleIntroScreen(void)
IntroSetTransition(0);
break;
case 1:
gUnk_081320F0[gUnk_02032EC0.transitionType]();
sIntroSequenceHandlers[gUnk_02032EC0.transitionType]();
break;
case 2:
if (gFadeControl.active) {
@ -51,61 +88,57 @@ void HandleIntroScreen(void)
sub_080AD918();
}
static void sub_080AD3F4(void)
static void HandleNintendoCapcomLogos(void)
{
u32 iVar1;
u32 paletteGroup;
u32 advance;
u32 paletteGroup;
iVar1 = sub_080AD84C();
if (gMenu.menuType == 0) {
sub_0801DA90(1);
gMenu.menuType = 1;
gMenu.transitionTimer = 120;
LoadGfxGroup(16);
LoadGfxGroup(1);
if (((struct_02000000 *)0x2000000)->gameLanguage == 0) {
paletteGroup = 1;
advance = GetAdvanceState();
if (gIntroState.state == 0) {
sub_0801DA90(1);
gIntroState.state = 1;
gIntroState.timer = 120;
LoadGfxGroup(16);
LoadGfxGroup(1);
if (((struct_02000000 *)0x2000000)->gameLanguage == 0) {
paletteGroup = 1;
}
else {
paletteGroup = 2;
}
LoadPaletteGroup(paletteGroup);
gScreen.lcd.lcdControl2 |= 0x400;
gScreen.bg2.bg0xOffset = 1;
DoFade(6, 8);
advance = ADVANCE_NONE;
} else {
if (advance == ADVANCE_TIMER_EXPIRED) {
advance = ADVANCE_KEY_PRESSED;
}
}
else {
paletteGroup = 2;
}
LoadPaletteGroup(paletteGroup);
gScreen.lcd.lcdControl2 |= 0x400;
gScreen.bg2.bg0xOffset = 1;
DoFade(6, 8);
iVar1 = 0;
}
else {
if (iVar1 == 1) {
iVar1 = 2;
}
}
if (iVar1 == 2) {
gUnk_02000010.field_0x5 = 1;
IntroSetTransition(1);
}
}
// typedef struct {
// u16 field_0x0[5];
// } struct_03001010;
if (advance == ADVANCE_KEY_PRESSED) {
gUnk_02000010.listenForKeyPresses = 1;
IntroSetTransition(1);
}
}
extern u16 gUnk_03001010[5];
extern u8 gUnk_02024490;
static void sub_080AD474(void)
static void HandleTitlescreen(void)
{
int iVar2;
int advance;
u32 paletteGroup;
gMenu.field_0x12++;
switch (gMenu.menuType) {
gIntroState.counter++;
switch (gIntroState.state) {
case 0:
gMenu.menuType = 1;
gMenu.overlayType = 0;
gMenu.transitionTimer = 0x1e;
gMenu.field_0x4 = 7;
gIntroState.state = 1;
gIntroState.subState = 0;
gIntroState.timer = 30;
gIntroState.gameLanguage = 7;
EraseAllEntities();
sub_0801CFA8(0);
sub_080ADD30();
@ -135,8 +168,8 @@ static void sub_080AD474(void)
gScreen.bg2.unk = 0x7C89;
gScreen.lcd.lcdControl2 |= 1;
gScreen.lcd.lcdControl2 |= 0x1300;
gMenu.field_0x2c = 0x10;
sub_080AD670();
gIntroState.swordBgScaleRatio = 0x10;
UpdateSwordBgAffineData();
}
sub_080A3210();
PlaySFX(3); //fanfare
@ -147,60 +180,58 @@ static void sub_080AD474(void)
return;
}
if (((struct_02000000*)0x2000000)->gameLanguage == 0) {
sub_080AD6AC();
HandleJapaneseTitlescreenAnimationIntro();
}
else {
sub_080AD76C();
HandleTitlescreenAnimationIntro();
}
break;
case 2:
gMenu.transitionTimer--;
if (gMenu.transitionTimer == 0) {
gMenu.transitionTimer = 0xe10;
gMenu.menuType++;
if (--gIntroState.timer == 0) {
gIntroState.timer = 3600;
gIntroState.state++;
}
sub_080AD644();
UpdatePressStartIcon();
break;
default:
iVar2 = sub_080AD84C();
if (iVar2 != 0) {
if (iVar2 == 2) {
advance = GetAdvanceState();
if (advance != ADVANCE_NONE) {
if (advance == ADVANCE_KEY_PRESSED) {
PlaySFX(0x6a);
}
else {
iVar2 = 0;
advance = ADVANCE_NONE;
}
IntroSetTransition(iVar2);
IntroSetTransition(advance);
PlaySFX(0x80080000);
}
sub_080AD644();
if ((gMenu.transitionTimer & 0x20) == 0) {
UpdatePressStartIcon();
if ((gIntroState.timer & 0x20) == 0) {
gUnk_03001010[4] = 0xe000;
gUnk_03001010[1] = 0x84;
sub_080ADA14(0x1ff,0);
}
}
if (gMenu.field_0x4 != ((struct_02000000*)0x2000000)->gameLanguage) {
gMenu.field_0x4 = ((struct_02000000*)0x2000000)->gameLanguage;
if (gIntroState.gameLanguage != ((struct_02000000*)0x2000000)->gameLanguage) {
gIntroState.gameLanguage = ((struct_02000000*)0x2000000)->gameLanguage;
LoadGfxGroup(3);
}
sub_080AD89C();
UpdateLightRays();
sub_0805E5C0();
sub_080AD9B0();
}
void sub_080AD644(void) {
static void UpdatePressStartIcon(void) {
gUnk_03001010[2] = 0;
gUnk_03001010[3] = 0;
gUnk_03001010[4] = 57376;
gUnk_03001010[4] = 0xE020;
gUnk_03001010[0] = 120;
gUnk_03001010[1] = 152;
sub_080ADA14(511, 1);
return;
}
static void sub_080AD670(void)
static void UpdateSwordBgAffineData(void)
{
struct BgAffineSrcData aff;
aff.texY = 0x8000;
@ -208,27 +239,27 @@ static void sub_080AD670(void)
aff.scrX = 0x78;
aff.scrY = 0x48;
aff.alpha = 0;
aff.sy = aff.sx = gMenu.field_0x2c;
aff.sy = aff.sx = gIntroState.swordBgScaleRatio;
BgAffineSet(&aff, (struct BgAffineDstData*)&gBgControls, 1);
}
void sub_080AD6AC(void)
static void HandleJapaneseTitlescreenAnimationIntro(void)
{
Entity *pEVar2;
switch (gMenu.overlayType) {
switch (gIntroState.subState) {
case 0:
if (!gFadeControl.active) {
if ((gMenu.field_0x12 & 1) == 0) {
if ((gIntroState.counter & 1) == 0) {
gScreen.bg2.bg0Control++;
}
if ((sub_080AD84C() == 2) || (gScreen.bg2.bg0Control == 0)) {
gMenu.overlayType++;
if (GetAdvanceState() == ADVANCE_KEY_PRESSED || gScreen.bg2.bg0Control == 0) {
gIntroState.subState++;
gScreen.bg2.bg0Control = 0;
gScreen.bg1.unk = 0xc09;
gFadeControl.field_0x4 = 0x40;
DoFade(6,0x10);
DoFade(6, 0x10);
PlaySFX(0xf8);
}
}
@ -236,8 +267,8 @@ void sub_080AD6AC(void)
case 1:
if (!gFadeControl.active) {
gFadeControl.field_0x4 = -1;
gMenu.overlayType++;
gMenu.transitionTimer = 0x5a;
gIntroState.subState++;
gIntroState.timer = 90;
pEVar2 = CreateObject(0xb4,0,0);
if (pEVar2 != NULL) {
pEVar2->x.HALF.HI = 0;
@ -246,88 +277,91 @@ void sub_080AD6AC(void)
}
break;
case 2:
if (sub_080AD84C()) {
gMenu.menuType++;
gMenu.transitionTimer = 0x3c;
if (GetAdvanceState() != ADVANCE_NONE) {
gIntroState.state++;
gIntroState.timer = 60;
}
}
}
void sub_080AD76C(void) {
switch (gMenu.overlayType) {
static void HandleTitlescreenAnimationIntro(void) {
switch (gIntroState.subState) {
case 0:
if (!gFadeControl.active) {
gMenu.overlayType = 1;
gIntroState.subState = 1;
gScreen.lcd.lcdControl2 |= 0x400;
PlaySFX(0xF6);
}
break;
case 1:
gMenu.field_0x2c += 16;
if (gMenu.field_0x2c > 256) {
gMenu.field_0x2c = 256;
gMenu.transitionTimer = 40;
gMenu.overlayType++;
gIntroState.swordBgScaleRatio += 0x10;
if (gIntroState.swordBgScaleRatio > 0x100) {
gIntroState.swordBgScaleRatio = 0x100;
gIntroState.timer = 40;
gIntroState.subState++;
DoFade(6, 16);
}
sub_080AD670();
UpdateSwordBgAffineData();
break;
case 2:
if (--gMenu.transitionTimer == 0) {
gMenu.transitionTimer = 300;
gMenu.overlayType++;
if (--gIntroState.timer == 0) {
gIntroState.timer = 300;
gIntroState.subState++;
CreateObject(0xBD, 0, 0);
DoFade(6, 16);
PlaySFX(0xF8);
}
break;
default:
if (!gFadeControl.active && sub_080AD84C()) {
gMenu.menuType++;
gMenu.transitionTimer = 60;
if (!gFadeControl.active && GetAdvanceState() != ADVANCE_NONE) {
gIntroState.state++;
gIntroState.timer = 60;
}
break;
}
}
static void sub_080AD834(void) {
static void ExitTitlescreen(void) {
if (!gFadeControl.active) {
InitScreen(SCREEN_CHOOSE_FILE);
}
}
u32 sub_080AD84C(void) {
static u32 GetAdvanceState(void) {
u32 newKeys;
if (gFadeControl.active) {
return 0;
return ADVANCE_NONE;
}
if (gUnk_02000010.field_0x5 == 0) {
if (!gUnk_02000010.listenForKeyPresses) {
newKeys = 0;
} else {
newKeys = gUnk_03000FF0.newKeys & (A_BUTTON | START_BUTTON);
}
if (--gMenu.transitionTimer == 0) {
return 1;
if (--gIntroState.timer == 0) {
return ADVANCE_TIMER_EXPIRED;
}
if (newKeys) {
return 2;
return ADVANCE_KEY_PRESSED;
}
return 0;
return ADVANCE_NONE;
}
void sub_080AD89C(void) {
if ((gMenu.field_0x12 & 0x7) == 0) {
gMenu.unk10[0] = (gMenu.unk10[0] + 1) & 0x3;
LoadPaletteGroup(gMenu.unk10[0] + 5);
static void UpdateLightRays(void) {
// Periodically rotate the palette to give a shimmeriming effect.
if ((gIntroState.counter & 0x7) == 0) {
gIntroState.lightRaysPaletteGroup++;
gIntroState.lightRaysPaletteGroup &= 0x3;
LoadPaletteGroup(5 + gIntroState.lightRaysPaletteGroup);
}
if ((gMenu.field_0x12 & 0x1F) == 0) {
gMenu.unk10[1] = (gMenu.unk10[1] + 1) & 0x7;
gScreen.controls.mosaicSize = gUnk_081320FC[gMenu.unk10[1]];
// Periodiccally update the transparency of the light rays.
if ((gIntroState.counter & 0x1F) == 0) {
gIntroState.lightRaysAlphaBlendIndex = (gIntroState.lightRaysAlphaBlendIndex + 1) & 0x7;
gScreen.controls.mosaicSize = sLightRaysAlphaBlends[gIntroState.lightRaysAlphaBlendIndex];
}
}

2
src/mainLoop.c
View File

@ -39,7 +39,7 @@ void MainLoop(void) {
sub_08056418();
sub_080ADD30();
gRand = 0x1234567;
_DmaZero(&gUnk_03001000, 16);
_DmaZero(&gUnk_03001000, sizeof(gUnk_03001000));
InitScreen(SCREEN_INTRO);
while (1) {
ReadKeyInput();