Add DEMO variant

10 files changed, 206 insertions, 4 deletions

diff --git a/src/audio.c b/src/audio.c
index 580a940e..39e1cfdd 100644
--- a/src/audio.c
+++ b/src/audio.c
@@ -742,7 +742,11 @@ extern const SongHeader sfx21F;
 extern const SongHeader sfx220;
 extern const SongHeader sfx221;
 
+#ifdef DEMO
+extern MusicPlayerTrack gMPlayTracksDEMO[];
+#else
 extern MusicPlayerTrack gMPlayTracks[];
+#endif
 
 extern MusicPlayerInfo gMPlayInfos[0x1C];
 extern u8 gMPlayMemAccArea[0x10];
@@ -783,6 +787,43 @@ typedef enum {
     MUSIC_PLAYER_BGM,
 } MusicPlayerE;
 
+
+#ifdef DEMO
+const MusicPlayer gMusicPlayers[] = {
+    [MUSIC_PLAYER_00] = { &gMPlayInfos[0x08], &gMPlayTracksDEMO[0x00], 2, 1 },
+    [MUSIC_PLAYER_PLY_VO] = { &gMPlayInfos[0x12], &gMPlayTracksDEMO[0x02], 1, 1 },
+    [MUSIC_PLAYER_02] = { &gMPlayInfos[0x13], &gMPlayTracksDEMO[0x03], 1, 1 },
+    [MUSIC_PLAYER_03] = { &gMPlayInfos2[0x2], &gMPlayTracksDEMO[0x04], 2, 1 },
+    [MUSIC_PLAYER_04] = { &gMPlayInfos[0x1B], &gMPlayTracksDEMO[0x06], 2, 1 },
+    [MUSIC_PLAYER_05] = { &gMPlayInfos[0x03], &gMPlayTracksDEMO[0x08], 2, 1 },
+    [MUSIC_PLAYER_06] = { &gMPlayInfos[0x07], &gMPlayTracksDEMO[0x0A], 2, 1 },
+    [MUSIC_PLAYER_07] = { &gMPlayInfos[0x11], &gMPlayTracksDEMO[0x0C], 2, 1 },
+    [MUSIC_PLAYER_08] = { &gMPlayInfos2[0x1], &gMPlayTracksDEMO[0x0E], 2, 1 },
+    [MUSIC_PLAYER_09] = { &gMPlayInfos[0x06], &gMPlayTracksDEMO[0x10], 2, 1 },
+    [MUSIC_PLAYER_0A] = { &gMPlayInfos[0x14], &gMPlayTracksDEMO[0x12], 2, 1 },
+    [MUSIC_PLAYER_0B] = { &gMPlayInfos2[0x3], &gMPlayTracksDEMO[0x14], 2, 1 },
+    [MUSIC_PLAYER_0C] = { &gMPlayInfos[0x19], &gMPlayTracksDEMO[0x16], 2, 1 },
+    [MUSIC_PLAYER_0D] = { &gMPlayInfos[0x02], &gMPlayTracksDEMO[0x18], 2, 1 },
+    [MUSIC_PLAYER_0E] = { &gMPlayInfos[0x0E], &gMPlayTracksDEMO[0x1A], 2, 1 },
+    [MUSIC_PLAYER_0F] = { &gMPlayInfos[0x18], &gMPlayTracksDEMO[0x1C], 2, 1 },
+    [MUSIC_PLAYER_10] = { &gMPlayInfos[0x05], &gMPlayTracksDEMO[0x1E], 2, 1 },
+    [MUSIC_PLAYER_11] = { &gMPlayInfos[0x1A], &gMPlayTracksDEMO[0x20], 2, 1 },
+    [MUSIC_PLAYER_12] = { &gMPlayInfos[0x0D], &gMPlayTracksDEMO[0x22], 2, 1 },
+    [MUSIC_PLAYER_13] = { &gMPlayInfos[0x00], &gMPlayTracksDEMO[0x24], 2, 1 },
+    [MUSIC_PLAYER_14] = { &gMPlayInfos[0x0A], &gMPlayTracksDEMO[0x26], 2, 1 },
+    [MUSIC_PLAYER_15] = { &gMPlayInfos[0x0C], &gMPlayTracksDEMO[0x28], 2, 1 },
+    [MUSIC_PLAYER_16] = { &gMPlayInfos[0x17], &gMPlayTracksDEMO[0x2A], 2, 1 },
+    [MUSIC_PLAYER_17] = { &gMPlayInfos[0x01], &gMPlayTracksDEMO[0x2C], 2, 1 },
+    [MUSIC_PLAYER_18] = { &gMPlayInfos[0x0B], &gMPlayTracksDEMO[0x2E], 2, 1 },
+    [MUSIC_PLAYER_19] = { &gMPlayInfos[0x15], &gMPlayTracksDEMO[0x30], 2, 1 },
+    [MUSIC_PLAYER_1A] = { &gMPlayInfos[0x09], &gMPlayTracksDEMO[0x32], 2, 1 },
+    [MUSIC_PLAYER_1B] = { &gMPlayInfos2[0x0], &gMPlayTracksDEMO[0x34], 2, 1 },
+    [MUSIC_PLAYER_1C] = { &gMPlayInfos[0x0F], &gMPlayTracksDEMO[0x36], 2, 1 },
+    [MUSIC_PLAYER_1D] = { &gMPlayInfos[0x16], &gMPlayTracksDEMO[0x38], 2, 1 },
+    [MUSIC_PLAYER_1E] = { &gMPlayInfos[0x04], &gMPlayTracksDEMO[0x3A], 0xc, 0 },
+    [MUSIC_PLAYER_BGM] = { &gMPlayInfos[0x10], &gMPlayTracksDEMO[0x46], 0xc, 0 },
+};
+#else
 const MusicPlayer gMusicPlayers[] = {
     [MUSIC_PLAYER_00] = { &gMPlayInfos[0x08], &gMPlayTracks[0x00], 2, 1 },
     [MUSIC_PLAYER_PLY_VO] = { &gMPlayInfos[0x12], &gMPlayTracks[0x02], 1, 1 },
@@ -817,6 +858,7 @@ const MusicPlayer gMusicPlayers[] = {
     [MUSIC_PLAYER_1E] = { &gMPlayInfos[0x04], &gMPlayTracks[0x3A], 0xc, 0 },
     [MUSIC_PLAYER_BGM] = { &gMPlayInfos[0x10], &gMPlayTracks[0x46], 0xc, 0 },
 };
+#endif
 
 const Song gSongTable[] = {
     [SFX_NONE] = { &sfxNone, MUSIC_PLAYER_BGM, MUSIC_PLAYER_BGM },
diff --git a/src/code_0805436C.c b/src/code_0805436C.c
index 61dfa3e0..21934343 100644
--- a/src/code_0805436C.c
+++ b/src/code_0805436C.c
@@ -265,5 +265,7 @@ u32 CreateItemDrop(Entity* arg0, u32 itemID, u32 itemParameter) {
 */
 
 void sub_08054870(void) {
+    #ifndef DEMO
     gUnk_080FE2A0[gMenu.menuType]();
+    #endif
 }
diff --git a/src/code_0805F9A0.c b/src/code_0805F9A0.c
index 856357d5..612c4371 100644
--- a/src/code_0805F9A0.c
+++ b/src/code_0805F9A0.c
@@ -4,9 +4,14 @@
 #include "functions.h"
 
 extern u16 gUnk_081092D4;
-extern u8 gUnk_02036AD8;
 extern u8 gUnk_081094CE;
+#ifdef DEMO
+extern u8 gUnk_02036AD0;
+extern u8 gUnk_02036A50;
+#else
+extern u8 gUnk_02036AD8;
 extern u8 gUnk_02036A58;
+#endif
 extern void* gUnk_081092AC[];
 
 typedef struct {
@@ -59,7 +64,11 @@ void sub_0805F820(WStruct* r0, u32* r1) {
     VStruct* temp3;
 
     if (r0->unk4 - r0->unk6 > 0) {
+        #ifdef DEMO
+        sub_08002724(r1, &gUnk_02036A50);
+        #else
         sub_08002724(r1, &gUnk_02036A58);
+        #endif
         if (r0->unk1 == 0) {
             u32 tmp = sub_0805F7A0(*r1);
             uVar6 = tmp & 0xf;
@@ -77,7 +86,11 @@ void sub_0805F820(WStruct* r0, u32* r1) {
             uVar3 = uVar4;
         }
 
+        #ifdef DEMO
+        puVar8 = &gUnk_02036A50 + uVar6;
+        #else
         puVar8 = &gUnk_02036A58 + uVar6;
+        #endif
         temp2 = r0->unk8;
         temp = gUnk_0810942E[r0->unk3].filler0[r0->unk2 * 2];
         uVar7 = r0->unk6;
@@ -120,23 +133,40 @@ void sub_0805F918(u32 idx, u32 idx2, void* dest) {
     u8* temp;
     u8* temp2;
 
+    #ifdef DEMO
+    MemFill32(sub_0805F8F8(idx2), &gUnk_02036AD0, 0xe0);
+    #else
     MemFill32(sub_0805F8F8(idx2), &gUnk_02036AD8, 0xe0);
+    #endif
     puVar1 = gUnk_081092AC[idx];
 
     temp = &gUnk_081094CE + idx2 * 0xc0;
     idx3 = 0;
     for (i = 0; i < 3; i++) {
+        #ifdef DEMO
+        puVar2 = &gUnk_02036A50;
+        sub_08002724(puVar1, &gUnk_02036A50);
+        #else
         puVar2 = &gUnk_02036A58;
         sub_08002724(puVar1, &gUnk_02036A58);
+        #endif
         puVar1 += 0x40;
 
         for (j = 0; j < 8; j++) {
+            #ifdef DEMO
+            sub_080026C4(puVar2, &gUnk_02036AD0, temp, idx3);
+            #else
             sub_080026C4(puVar2, &gUnk_02036AD8, temp, idx3);
+            #endif
             puVar2++;
             idx3++;
         }
     }
+    #ifdef DEMO
+    LoadResourceAsync((const void*)&gUnk_02036AD0, (u32)dest, 0xe0);
+    #else
     LoadResourceAsync((const void*)&gUnk_02036AD8, (u32)dest, 0xe0);
+    #endif
 }
 
 u32 sub_0805F9A0(u32 r0) {
diff --git a/src/eeprom.c b/src/eeprom.c
index 4ea218b3..945c788f 100644
--- a/src/eeprom.c
+++ b/src/eeprom.c
@@ -1,6 +1,10 @@
 #include "global.h"
 #include "gba/eeprom.h"
 
+#ifdef DEMO
+const u8 unk[] = {0xff, 0xff, 0xff, 0xff};
+const u8 padding[0x18] = {};
+#else
 typedef struct EEPROMConfig {
     u32 unk_00;
     u16 size;
@@ -9,6 +13,7 @@ typedef struct EEPROMConfig {
     // u8 filler[3];
 } EEPROMConfig;
 
+
 const char EEPROM_V124[] = "EEPROM_V124";
 extern const EEPROMConfig* gEEPROMConfig;
 const EEPROMConfig gEEPROMConfig512 = { 0x200, 0x40, 0x300, 0x6 };
@@ -16,6 +21,8 @@ const EEPROMConfig gEEPROMConfig8k = { 0x2000, 0x400, 0x300, 0xe };
 
 u16 EEPROMWrite(u16, const u16*, u8);
 
+
+
 u16 EEPROMConfigure(u16 unk_1) {
     u16 ret;
 
@@ -248,3 +255,5 @@ u16 EEPROMWrite0_8k_Check(u16 address, const u16* data) {
 }
 
 const char thing[0x1c] = "\xff\xff\xff\xff";
+
+#endif
\ No newline at end of file
diff --git a/src/game.c b/src/game.c
index 49fe233f..4117416d 100644
--- a/src/game.c
+++ b/src/game.c
@@ -61,10 +61,15 @@ void sub_0805212C(void) {
             gMenu.transitionTimer--;
             if (gMenu.transitionTimer == 0) {
                 sub_080520C4(2);
+                #ifdef DEMO
+                SoundReq(0x80080000);
+                DoFade(7,4);
+                #else
                 sub_08052418(0, 0);
                 gScreen.lcd.displayControl |= 0x600;
                 gFadeControl.field_0x4 = 0xffff;
                 DoFade(4, 0x10);
+                #endif
             }
         }
     } else {
@@ -72,6 +77,13 @@ void sub_0805212C(void) {
     }
 }
 
+#ifdef DEMO
+void sub_080521A0(void) {
+  if (gFadeControl.active == 0) {
+    DoSoftReset();
+  }
+}
+#else
 void sub_080521A0(void) {
     s32 temp3;
     u32 temp2;
@@ -147,6 +159,7 @@ void sub_080521A0(void) {
             break;
     }
 }
+#endif
 
 void sub_080522F4(void) {
     switch (gMenu.menuType) {
diff --git a/src/intro.c b/src/intro.c
index 8eca40dc..33e87e6c 100644
--- a/src/intro.c
+++ b/src/intro.c
@@ -104,6 +104,24 @@ static void HandleNintendoCapcomLogos(void) {
         gScreen.bg.bg1Updated = 1;
         DoFade(6, 8);
         advance = ADVANCE_NONE;
+        #ifdef DEMO
+        if (gUnk_02000010.listenForKeyPresses == 0) {
+        if ((gInput.heldKeys & 0x204) == 0x204) { // TODO
+            gUnk_02000010.field_0x7 = 1;
+            SoundReq(0x73);
+        }
+        else {
+            if ((gInput.heldKeys & 0x104) == 0x104) { // TODO
+            gUnk_02000010.field_0x7 = 2;
+            SoundReq(0xcd);
+            }
+            else {
+            gUnk_02000010.field_0x7 = 0;
+            }
+        }
+        }
+        #endif
+
     } else {
         if (advance == ADVANCE_TIMER_EXPIRED) {
             advance = ADVANCE_KEY_PRESSED;
diff --git a/src/main.c b/src/main.c
index 78e9fdd0..3fa19e65 100644
--- a/src/main.c
+++ b/src/main.c
@@ -12,13 +12,20 @@
 
 extern void HandleIntroScreen(void);
 extern void HandleChooseFileScreen(void);
+extern void HandleChooseDemoScreen(void);
 extern void HandleGameplayScreen(void);
 extern void HandleGameOverScreen(void);
 extern void HandleCreditsScreen(void);
 extern void HandleDebugTextScreen(void);
 
 static void (*const sScreenHandlers[])(void) = {
-    [SCREEN_INTRO] = HandleIntroScreen,       [SCREEN_CHOOSE_FILE] = HandleChooseFileScreen,
+    [SCREEN_INTRO] = HandleIntroScreen,      
+    #ifdef DEMO
+     [SCREEN_CHOOSE_FILE] = HandleChooseDemoScreen,
+    #else
+    [SCREEN_CHOOSE_FILE] = HandleChooseFileScreen,
+    #endif
+
     [SCREEN_GAMEPLAY] = HandleGameplayScreen, [SCREEN_GAME_OVER] = HandleGameOverScreen,
     [SCREEN_CREDITS] = HandleCreditsScreen,   [SCREEN_DEBUG_TEXT] = HandleDebugTextScreen,
 };
@@ -83,7 +90,11 @@ void AgbMain(void) {
 // Interrupt handlers that are loaded into RAM.
 extern u8 sub_080B197C[];
 extern u8 gUnk_030056F0[];
+#ifdef DEMO
+extern u8 gUnk_02038558[];
+#else
 extern u8 gUnk_02038560[];
+#endif
 extern u8 gUnk_080B2CD8[];
 extern u8 gUnk_080B2CD8_2[];
 extern u8 gUnk_080B2CD8_3[];
@@ -105,7 +116,11 @@ static void sub_08055F70(void) {
 
     size = (u32)gUnk_080B2CD8_2 - (u32)gUnk_080B2CD8_3;
     if (size != 0) {
+        #ifdef DEMO
+        MemCopy(gUnk_080B2CD8_3, gUnk_02038558, size);
+        #else
         MemCopy(gUnk_080B2CD8_3, gUnk_02038560, size);
+        #endif
     }
 
     DispReset(0);
diff --git a/src/room.c b/src/room.c
index c2b1f07b..5e9deac0 100644
--- a/src/room.c
+++ b/src/room.c
@@ -2161,8 +2161,18 @@ u32 sub_0804CD0C() {
     return 1;
 }
 
+#ifdef DEMO
 void nullsub_251() {
+    if (gUnk_02000000->saveFileId != 0 && GetInventoryValue(0x40) == 0) {
+        SetTileType(0x365,0x349,1);
+        SetTileType(0x365,0x34a,1);
+        SetTileType(0x365,0x34b,1);
+    }
 }
+#else
+void nullsub_251() {
+}
+#endif
 
 u32 sub_0804CD14() {
     return 1;
@@ -2288,8 +2298,18 @@ u32 sub_0804CE38() {
     return 1;
 }
 
+#ifdef DEMO
 void nullsub_262() {
+    if (GetInventoryValue(0x41) == 0) {
+        SetTileType(0x365,0x287,2);
+        SetTileType(0x365,0x288,2);
+        SetTileType(0x365,0x289,2);
+    }
 }
+#else
+void nullsub_262() {
+}
+#endif
 
 u32 sub_0804CE40() {
     return 1;
@@ -5049,6 +5069,10 @@ void sub_0804EC00(void) {
     if ((s32)gSave.windcrests > -1) {
         LoadRoomEntityList(&gUnk_080F4E10);
     }
+    #ifdef DEMO
+    SetTileType(0x177,0x5b4,1);
+    SetTileType(0x177,0x5f4,1);
+    #endif
 }
 
 void sub_0804EC98(void) {
diff --git a/src/save.c b/src/save.c
index 749b6730..8b751914 100644
--- a/src/save.c
+++ b/src/save.c
@@ -41,10 +41,20 @@ u32 DataCompare(u32 address, const void* data, u32 size);
 const u16 gUnk_0811E454[] = { 0x0,   0x0,   0x100, 0x200, 0x300, 0x400, 0x500,
                               0x5C0, 0x680, 0x740, 0x800, 0x8C0, 0x9C0, 0xA80 };
 
-const char gUnk_0811E470[6] = "LINK";
+const char gUnk_0811E470[4] = "LINK";
+
+#ifdef DEMO
+const u8 unknown[] = { 0x0, 0x0f, 0x0a, 0x0a, 0x0f, 0x0f, 0x0f, 0x08, 0x05, 0x05, 0x00, 0x00 };
+#else
+const u8 padding[2] = {0,0};
+#endif
 
 static SaveResult (*const sSaveHandlers[])(u32) = { HandleSaveInit, HandleSaveInProgress, HandleSaveDone };
 
+
+#ifdef DEMO
+asm(".incbin \"baserom_demo.gba\", 0x11e010, 0xf0c"); // @nocheckin
+#else
 static const char sSignatureLong[32] = "AGBZELDA:THE MINISH CAP:ZELDA 5";
 
 // Save file is untouched
@@ -60,7 +70,7 @@ const SaveFileEEPROMAddresses gSaveFileEEPROMAddresses[] = { { 0x500, 0x30, 0x10
                                                              { 0x20, 0, 0, 0, 0x1000 },
                                                              { 0x20, 0x60, 0x1060, 0xf80, 0x1f80 },
                                                              { 0x8, 0xfa0, 0x1fa0, 0xfa0, 0x1fa0 } };
-
+#endif
 void sub_0807CD9C() {
     sub_080530C8();
 }
@@ -122,7 +132,12 @@ SaveResult HandleSaveDone(u32 arg0) {
     return result;
 }
 
+
 u32 InitSaveData(void) {
+#ifdef DEMO
+  CpuSet(NULL,&gSave,0x4b4);
+  return 1;
+#else
     const SaveFileEEPROMAddresses* eepromAddresses;
     u32 error;
 
@@ -147,40 +162,71 @@ u32 InitSaveData(void) {
         DataWrite(eepromAddresses->address1, sSignatureLong, eepromAddresses->size);
     }
     return 1;
+#endif
 }
 
 u32 WriteSaveFile(u32 index, SaveFile* saveFile) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleWriteWithStatus(index, saveFile);
+    #endif
 }
 
 u32 Write_02000000(struct_02000000* arg0) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleWriteWithStatus(3, arg0);
+    #endif
 }
 
 u32 sub_0807CF1C(u8* arg0) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleWriteWithStatus(5, arg0);
+    #endif
 }
 
 s32 ReadSaveFile(u32 index, SaveFile* saveFile) {
+    #ifdef DEMO
+    return 1;
+    #else
     return DataDoubleReadWithStatus(index, saveFile);
+    #endif
 }
 
 u32 Read_02000000(struct_02000000* arg0) {
+    #ifdef DEMO
+    return 0;
+    #else
     return DataDoubleReadWithStatus(3, arg0);
+    #endif
 }
 
 u32 sub_0807CF3C(u8* arg0) {
+    #ifdef DEMO
+    return 0;
+    #else
     return DataDoubleReadWithStatus(5, arg0);
+    #endif
 }
 
+
+
 void SetFileStatusDeleted(u32 index) {
+    #ifndef DEMO
     const SaveFileEEPROMAddresses* eepromAddresses;
 
     eepromAddresses = GetSaveFileEEPROMAddresses(index);
     WriteSaveFileStatus(eepromAddresses->checksum2, &sSaveDescDeleted);
     WriteSaveFileStatus(eepromAddresses->checksum1, &sSaveDescDeleted);
+    #endif
 }
 
+
+#ifndef DEMO
 void SetFileStatusInit(u32 index) {
     const SaveFileEEPROMAddresses* eepromAddresses;
     const SaveFileStatus* fileStatus;
@@ -406,3 +452,4 @@ bool32 DataCompare(u32 address, const void* data, u32 size) {
     }
     return TRUE;
 }
+#endif
\ No newline at end of file
diff --git a/src/sub_080A3B84.c b/src/sub_080A3B84.c
index b4df18d0..af806c36 100644
--- a/src/sub_080A3B84.c
+++ b/src/sub_080A3B84.c
@@ -7,6 +7,7 @@
 extern void (*const gUnk_081280C4[])();
 
 void DrawKinstoneMenu(void) {
+    #ifndef DEMO
     gScreenTransition.field_0x24[8] = 2;
     FlushSprites();
     gUnk_081280C4[gMenu.menuType]();
@@ -18,6 +19,7 @@ void DrawKinstoneMenu(void) {
     sub_080AD9B0();
     sub_080AD918();
     gScreenTransition.field_0x24[8] = 0;
+    #endif
 }
 
 extern void gUnk_081280DC;