Merge pull request #121 from RevoSucks/document_game_state

Game_Thread and label game states

include/variables.h

@@ -14,6 +14,31 @@
 #define POOL_END_4MB 0x80400000
 #define POOL_END_6MB 0x80600000
 
+// game states
+#define STATE_N64_LOGO_INTRO        0x01 // N64 Logo + Intro
+#define STATE_TITLE_SCREEN          0x02 // Title screen
+#define STATE_N64DD_BOOT_UNUSED     0x03 // seems to be unused, but boots an N64DD disk. Leftover from JP.
+#define STATE_MENU_SELECT           0x04 // Menu Select (select Battle Now!, POKeMON Stadium, etc)
+#define STATE_AREA_SELECT           0x10 // Area Select (select Stadium, GB Tower, Gym Leader Castle, etc)
+#define STATE_GALLERY               0x11 // Gallery
+#define STATE_EVENT_BATTLE          0x12 // Event Battle
+#define STATE_OPTIONS               0x13 // Options
+#define STATE_FAST_N64_LOGO         0x40 // N64 Logo but no Intro. The Sticker Station might use this for booting quickly and into Gallery mode.
+#define STATE_STADIUM_MENU          0x20 // POKeMON Stadium (the main Stadium mode) 
+#define STATE_FREE_BATTLE           0x21 // Free Battle
+#define STATE_VS_MEWTWO             0x22 // VS Mewtwo
+#define STATE_KIDS_CLUB             0x23 // Kids Club
+#define STATE_VICTORY_PALACE        0x24 // Victory Palace
+#define STATE_POKEMON_LAB           0x25 // POKeMON Lab
+#define STATE_GB_TOWER              0x26 // GB Tower
+#define STATE_GYM_LEADER_CASTLE     0x27 // Gym Leader Castle
+#define STATE_BATTLE_NOW_1P         0x28 // Battle Now! (1P)
+#define STATE_BATTLE_NOW_2P         0x29 // Battle Now! (2P)
+#define STATE_BATTLE_FROM_EVENT     0x2A // Battle menu from Event Battle
+#define STATE_STUBBED_DEBUG         0x80 // stubbed/removed debug menu. This could have been the Early Pokedex Menu seen in the JP version.
+#define STATE_FAST_BATTLE           0x81 // most likely the P97/P98 mode(s) and uses GB Pak 1 and 2 for the teams for an immediate battle; skips even the VS screen and Battle Rule screen. However, the music/stadium used is probably set by some other menu, because it seems to use the outdoor Free Battle area + Poke Cup 1-3, which isnt correct.
+#define STATE_KIDS_CLUB_TITLE       0x82 // Kids Club, but it returns to the title screen. Possibly for a Kiosk/demo version.
+
 /*
  * Dynamic heap with an indetermate amount of space. This pool can either end at 4MB or
  * 6MB depending on osMemSize, which is really strange as it should be using the whole
@@ -219,4 +244,8 @@ extern u8 D_87B000CC;
 extern u8 D_87B000D0;
 extern u8 D_87B000D4;
 
+extern s32 gCurrentGameState;
+extern s32 gLastGameState;
+extern s8 D_800AF732;
+
 #endif

linker_scripts/us/symbol_addrs.txt

@@ -251,3 +251,6 @@ D_87B000F0 = 0x87B000F0;
 D_87B000F2 = 0x87B000F2;
 D_87B000F4 = 0x87B000F4;
 D_86402848 = 0x86402848;
+gCurrentGameState = 0x80075668; // size:0x4
+gLastGameState = 0x8007566C; // size:0x4
+

linker_scripts/us/symbol_addrs_code.txt

@@ -922,7 +922,7 @@ func_80028C7C = 0x80028C7C; // type:func
 func_80028D60 = 0x80028D60; // type:func
 func_80028E68 = 0x80028E68; // type:func
 func_80028EB8 = 0x80028EB8; // type:func
-func_80028FA0 = 0x80028FA0; // type:func
+Game_DoCopyProtection = 0x80028FA0; // type:func
 func_80029008 = 0x80029008; // type:func
 func_80029048 = 0x80029048; // type:func
 func_80029074 = 0x80029074; // type:func

src/29BA0.c

@@ -1,7 +1,16 @@
 #include "global.h"
 #include "memory.h"
 
-#pragma GLOBAL_ASM("asm/us/nonmatchings/29BA0/func_80028FA0.s")
+s32 Game_DoCopyProtection(s32 state) {
+    u32 intr = osSetIntMask(1);
+
+    // if the 16-bit value at ROM offset 0xE38 is not 0x828A, make the state an invalid one.
+    if (!(HW_REG(PI_STATUS_REG, u32) & 3) && ((*(u32*)0xB0000E38 & 0xFFFF) != 0x828A)) {
+        state = -0x10;
+    }
+    osSetIntMask(intr);
+    return state;
+}
 
 s32 func_80029008(s32 arg0, s32 romStart, s32 romEnd, s32 arg3, s32 arg4) {
     s32 result;
@@ -83,4 +92,47 @@ s32 func_80029008(s32 arg0, s32 romStart, s32 romEnd, s32 arg3, s32 arg4) {
 
 #pragma GLOBAL_ASM("asm/us/nonmatchings/29BA0/func_8002B310.s")
 
-#pragma GLOBAL_ASM("asm/us/nonmatchings/29BA0/func_8002B330.s")
+void Game_Thread(void *arg) {
+    s32 state;
+
+    __osSetFpcCsr(0x01000C01U);
+    Cont_SetupControllers();
+    func_800196DC();
+    main_pool_push_state('GAME');
+    D_800AF732 = 0;
+    // is this game connected to a Sticker Station?
+    if (func_8000B4C4() != 0) {
+        gCurrentGameState = STATE_FAST_N64_LOGO;
+    }
+    while(1) {
+        state = Game_DoCopyProtection(gCurrentGameState);
+        switch (state) {
+            case STATE_N64_LOGO_INTRO:    func_80029310();  break;
+            case STATE_TITLE_SCREEN:      func_800293CC();  break;
+            case STATE_N64DD_BOOT_UNUSED: func_800296AC();  break;
+            case STATE_AREA_SELECT:       func_80029828();  break;
+            case STATE_GALLERY:           func_8002A698();  break;
+            case STATE_EVENT_BATTLE:      func_80029884();  break;
+            case STATE_OPTIONS:           func_800298D4();  break;
+            case STATE_MENU_SELECT:       func_80029924();  break;
+            case STATE_STADIUM_MENU:      func_80029BC0();  break;
+            case STATE_FREE_BATTLE:       func_8002A06C();  break;
+            case STATE_VS_MEWTWO:         func_8002A400();  break;
+            case STATE_KIDS_CLUB:         func_8002A670();  break;
+            case STATE_VICTORY_PALACE:    func_8002A6C0();  break;
+            case STATE_POKEMON_LAB:       func_8002EF44();  break;
+            case STATE_GB_TOWER:          func_8002A728();  break;
+            case STATE_GYM_LEADER_CASTLE: func_8002AAA8();  break;
+            case STATE_BATTLE_NOW_1P:     func_8002ADE8(1); break;
+            case STATE_BATTLE_NOW_2P:     func_8002ADE8(2); break;
+            case STATE_BATTLE_FROM_EVENT: func_8002AF38();  break;
+            case STATE_STUBBED_DEBUG:     func_800296E0();  break;
+            case STATE_FAST_BATTLE:       func_8002B180();  break;
+            case STATE_KIDS_CLUB_TITLE:   func_8002B24C();  break;
+            case STATE_FAST_N64_LOGO:     func_8002B07C();  break;
+            // same as state 1: N64 Logo + Intro.
+            default:                      func_80029310();  break;
+        }
+        gLastGameState = state;
+    }
+}

src/C030.c

@@ -23,6 +23,7 @@ void func_8000B430(long ms) {
     }
 }
 
+// Is this a Sticker Station?
 s32 func_8000B4C4(void) {
     s32 i;
     s32 ret;
@@ -31,6 +32,7 @@ s32 func_8000B4C4(void) {
     if (D_800697E0 == 0) {
         u8* buffer;
         osPfsIsPlug(&gSIEventMesgQueue, &sp2F);
+        // is controller 4 plugged in? (why?)
         if (sp2F & 8) {
             Cont_BlockEepromQueue();
             for (buffer = D_800A82B0, i = 0; i < 32; i++) {

src/main.c

@@ -5,7 +5,7 @@
 #include "reset.h"
 #include "util.h"
 
-extern void func_8002B330(); // thread 6 function
+extern void Game_Thread(void *arg); // thread 6 function
 
 // entry .bss
 u8 D_8007ED80[0xF180 - 0xED80]; // unknown, start of .bss
@@ -30,7 +30,7 @@ void Idle_ThreadEntry(UNUSED void* unused) {
     func_8000D564();
     func_800019C8();
     SoftReset_CreateThread();
-    osCreateThread(&pThreads, 6, &func_8002B330, 0, &D_800818E0, 20);
+    osCreateThread(&pThreads, 6, &Game_Thread, 0, &D_800818E0, 20);
     osStartThread(&pThreads);
     osSetThreadPri(NULL, 0);
 

yamls/us/rom.yaml

@@ -386,6 +386,7 @@
     - [0x7CD10, rodata, rom_rodata_7CD10]
     - [0x7CD40, rodata, rom_rodata_7CD40]
     - [0x7CEC0, rodata, rom_rodata_7CEC0]
+    - [0x7CED0, .rodata, 29BA0]
     - [0x7CFD0, rodata, rom_rodata_7CFD0]
     - [0x7D030, rodata, rom_rodata_7D030]
     - [0x7D040, rodata, rom_rodata_7D040]