Decomp game.c (#129)

* decomp most of game.c

* improve GameState_DrawInputDisplay matching

* fix merge conflicts

* pr suggestions

* remove builtin math functions

1 files changed, 526 insertions, 0 deletions

diff --git a/src/code/game.c b/src/code/game.c
new file mode 100644
index 000000000..31bd41542
--- /dev/null
+++ b/src/code/game.c
@@ -0,0 +1,526 @@
+#include <global.h>
+#include "vt.h"
+
+typedef struct {
+    /* 0x0000 */ OSViMode viMode;
+    /* 0x0050 */ char unk_50[0x30];
+    /* 0x0080 */ u32 viFeatures;
+    /* 0x0084 */ char unk_84[4];
+} unk_80166528;
+
+SpeedMeter D_801664D0;
+struct_801664F0 D_801664F0;
+struct_801664F0 D_80166500;
+VisMonoStruct sMonoColors;
+unk_80166528 D_80166528;
+FaultClient sGameFaultClient;
+u16 sLastButtonPressed;
+char sBtnChars[] = {
+    'A', 'B', 'Z', 'S', 'u', 'l', 'd', 'r', '*', '+', 'L', 'R', 'u', 'd', 'l', 'r', '\0',
+};
+
+void GameState_FaultPrint(void) {
+    s32 i;
+
+    osSyncPrintf("last_button=%04x\n", sLastButtonPressed);
+    FaultDrawer_DrawText(120, 180, "%08x", sLastButtonPressed);
+    for (i = 0; i < ARRAY_COUNT(sBtnChars); i++) {
+        if (sLastButtonPressed & (1 << i)) {
+            FaultDrawer_DrawText((i * 8) + 0x78, 0xBE, "%c", sBtnChars[i]);
+        }
+    }
+}
+
+void GameState_SetFBFilter(Gfx** gfx) {
+    Gfx* gfxP;
+    gfxP = *gfx;
+    if ((R_FB_FILTER_TYPE > 0) && (R_FB_FILTER_TYPE < 5)) {
+        D_801664F0.type = R_FB_FILTER_TYPE;
+        D_801664F0.color.r = R_FB_FILTER_PRIM_COLOR(0);
+        D_801664F0.color.g = R_FB_FILTER_PRIM_COLOR(1);
+        D_801664F0.color.b = R_FB_FILTER_PRIM_COLOR(2);
+        D_801664F0.color.a = R_FB_FILTER_A;
+        func_800ACE98(&D_801664F0, &gfxP);
+    } else if ((R_FB_FILTER_TYPE == 5) || (R_FB_FILTER_TYPE == 6)) {
+        D_80166500.type = (R_FB_FILTER_TYPE == 6);
+        D_80166500.color.r = R_FB_FILTER_PRIM_COLOR(0);
+        D_80166500.color.g = R_FB_FILTER_PRIM_COLOR(1);
+        D_80166500.color.b = R_FB_FILTER_PRIM_COLOR(2);
+        D_80166500.color.a = R_FB_FILTER_A;
+        D_80166500.envColor.r = R_FB_FILTER_ENV_COLOR(0);
+        D_80166500.envColor.g = R_FB_FILTER_ENV_COLOR(1);
+        D_80166500.envColor.b = R_FB_FILTER_ENV_COLOR(2);
+        D_80166500.envColor.a = R_FB_FILTER_A;
+        func_800AD958(&D_80166500, &gfxP);
+    } else if (R_FB_FILTER_TYPE == 7) {
+        sMonoColors.colorFormat = 0;
+        sMonoColors.primColor.r = R_FB_FILTER_PRIM_COLOR(0);
+        sMonoColors.primColor.g = R_FB_FILTER_PRIM_COLOR(1);
+        sMonoColors.primColor.b = R_FB_FILTER_PRIM_COLOR(2);
+        sMonoColors.primColor.a = R_FB_FILTER_A;
+        sMonoColors.envColor.r = R_FB_FILTER_ENV_COLOR(0);
+        sMonoColors.envColor.g = R_FB_FILTER_ENV_COLOR(1);
+        sMonoColors.envColor.b = R_FB_FILTER_ENV_COLOR(2);
+        sMonoColors.envColor.a = R_FB_FILTER_A;
+        func_800AD5C0(&sMonoColors, &gfxP);
+    }
+    *gfx = gfxP;
+}
+
+void func_800C4344(GameState* gameState) {
+    Input* selectedInput;
+    s32 hexDumpSize;
+    u16 hReg82;
+
+    if (HREG(80) == 0x14) {
+        __osMalloc_FreeBlockTest_Enable = HREG(82);
+    }
+
+    if (HREG(80) == 0xC) {
+        selectedInput = &gameState->input[HREG(81) < 4U ? HREG(81) : 0];
+        hReg82 = HREG(82);
+        HREG(83) = selectedInput->cur.in.button;
+        HREG(84) = selectedInput->press.in.button;
+        HREG(85) = selectedInput->rel.in.x;
+        HREG(86) = selectedInput->rel.in.y;
+        HREG(87) = selectedInput->rel.in.x;
+        HREG(88) = selectedInput->rel.in.y;
+        HREG(89) = selectedInput->cur.in.x;
+        HREG(90) = selectedInput->cur.in.y;
+        HREG(93) = (selectedInput->cur.in.button == hReg82);
+        HREG(94) = (~(selectedInput->cur.in.button | ~hReg82) == 0);
+        HREG(95) = (~(selectedInput->press.in.button | ~hReg82) == 0);
+    }
+
+    if (D_8012DBC0 != 0) {
+        func_8006390C(&gameState->input[1]);
+    }
+
+    D_80009460 = HREG(60);
+    gDmaMgrDmaBuffSize = SREG(21) != 0 ? ALIGN16(SREG(21)) : 0x2000;
+    gSystemArenaLogSeverity = HREG(61);
+    gZeldaArenaLogSeverity = HREG(62);
+    if (HREG(80) == 8) {
+        if (HREG(94) != 8) {
+            HREG(94) = 8;
+            HREG(81) = 0;
+            HREG(82) = 0;
+            HREG(83) = 0;
+        }
+        if (HREG(81) < 0) {
+            HREG(81) = 0;
+            // & 0xFFFFFFFF necessary for matching.
+            hexDumpSize = (HREG(83) == 0 ? 0x100 : HREG(83) * 0x10) & 0xFFFFFFFF;
+            LogUtils_LogHexDump(PHYSICAL_TO_VIRTUAL(HREG(82) << 8), hexDumpSize);
+        }
+    }
+}
+
+#ifdef NON_MATCHING
+// Regalloc mostly
+void GameState_DrawInputDisplay(u16 input, Gfx** gfx) {
+    static const u16 sInpDispBtnColors[] = {
+        GPACK_RGBA5551(31, 31, 0, 1),  GPACK_RGBA5551(31, 31, 0, 1),  GPACK_RGBA5551(31, 31, 0, 1),
+        GPACK_RGBA5551(31, 31, 0, 1),  GPACK_RGBA5551(15, 15, 15, 1), GPACK_RGBA5551(15, 15, 15, 1),
+        GPACK_RGBA5551(31, 0, 31, 1),  GPACK_RGBA5551(0, 31, 31, 1),  GPACK_RGBA5551(15, 15, 15, 1),
+        GPACK_RGBA5551(15, 15, 15, 1), GPACK_RGBA5551(15, 15, 15, 1), GPACK_RGBA5551(15, 15, 15, 1),
+        GPACK_RGBA5551(31, 0, 0, 1),   GPACK_RGBA5551(15, 15, 15, 1), GPACK_RGBA5551(0, 31, 15, 1),
+        GPACK_RGBA5551(0, 0, 31, 1),
+    };
+    s32 i, j;
+    s32 lrx, lry, ulx, uly;
+    Gfx* gfxP = *gfx;
+    gDPPipeSync(gfxP++);
+    gDPSetOtherMode(gfxP++,
+                    G_AD_PATTERN | G_CD_MAGICSQ | G_CK_NONE | G_TC_CONV | G_TF_POINT | G_TT_NONE | G_TL_TILE |
+                        G_TD_CLAMP | G_TP_NONE | G_CYC_FILL | G_PM_NPRIMITIVE,
+                    G_AC_NONE | G_ZS_PIXEL | G_RM_NOOP | G_RM_NOOP2);
+
+    for (i = 0, j = 1; i < 0x10; i++, j++) {
+        if (input & (1 << i)) {
+            gDPSetFillColor(gfxP++, (sInpDispBtnColors[i] << 0x10) | sInpDispBtnColors[i]);
+            ulx = i * 4 + 226;
+            uly = 220;
+            lrx = j * 4 + 225;
+            lry = 223;
+            gDPFillRectangle(gfxP++, ulx, uly, lrx, lry);
+            gDPPipeSync(gfxP++);
+        }
+    };
+
+    *gfx = gfxP;
+}
+#else
+#pragma GLOBAL_ASM("asm/non_matchings/code/game/GameState_DrawInputDisplay.s")
+#endif
+
+void GameState_Draw(GameState* gameState, GraphicsContext* gfxCtx) {
+    Gfx* newDList;
+    Gfx* polyOpaP;
+    Gfx* dispRefs[5];
+    char pad[0x10];
+    GfxPrint printChars[2];
+
+    Graph_OpenDisps(dispRefs, gfxCtx, "../game.c", 746);
+    newDList = Graph_GfxPlusOne(polyOpaP = gfxCtx->polyOpa.p);
+    gSPDisplayList(gfxCtx->overlay.p++, newDList);
+
+    if (R_ENABLE_FB_FILTER == 1) {
+        GameState_SetFBFilter(&newDList);
+    }
+
+    sLastButtonPressed = gameState->input[0].press.in.button | gameState->input[0].cur.in.button;
+    if (R_DISABLE_INPUT_DISPLAY == 0) {
+        GameState_DrawInputDisplay(sLastButtonPressed, &newDList);
+    }
+
+    if (R_ENABLE_AUDIO_DBG & 1) {
+        GfxPrint_Ctor(printChars);
+        GfxPrint_Open(printChars, newDList);
+        func_800EEA50(printChars);
+        newDList = GfxPrint_Close(printChars);
+        GfxPrint_Dtor(printChars);
+    }
+
+    if (R_ENABLE_ARENA_DBG < 0) {
+        DebugArena_Display();
+        SystemArena_Display();
+        //% 08x bytes left until the death of Hyrule (game_alloc)
+        osSyncPrintf("ハイラル滅亡まであと %08x バイト(game_alloc)\n", THA_GetSize(&gameState->tha));
+        R_ENABLE_ARENA_DBG = 0;
+    }
+
+    if (1) {
+        gSPEndDisplayList(newDList++);
+        Graph_BranchDlist(polyOpaP, newDList);
+        gfxCtx->polyOpa.p = newDList;
+    }
+
+    Graph_CloseDisps(dispRefs, gfxCtx, "../game.c", 800);
+
+    func_80063D7C(gfxCtx);
+
+    if (R_ENABLE_ARENA_DBG != 0) {
+        SpeedMeter_DrawTimeEntries(&D_801664D0, gfxCtx);
+        SpeedMeter_DrawAllocEntries(&D_801664D0, gfxCtx, gameState);
+    }
+}
+
+void GameState_SetFrameBuffer(GraphicsContext* gfxCtx) {
+    Gfx* dispRef[5];
+
+    Graph_OpenDisps(dispRef, gfxCtx, "../game.c", 814);
+
+    gSPSegment(gfxCtx->polyOpa.p++, 0, 0);
+    gSPSegment(gfxCtx->polyOpa.p++, 0xF, gfxCtx->curFrameBuffer);
+    gSPSegment(gfxCtx->polyOpa.p++, 0xE, gZBuffer);
+    gSPSegment(gfxCtx->polyXlu.p++, 0, 0);
+    gSPSegment(gfxCtx->polyXlu.p++, 0xF, gfxCtx->curFrameBuffer);
+    gSPSegment(gfxCtx->polyXlu.p++, 0xE, gZBuffer);
+    gSPSegment(gfxCtx->overlay.p++, 0, 0);
+    gSPSegment(gfxCtx->overlay.p++, 0xF, gfxCtx->curFrameBuffer);
+    gSPSegment(gfxCtx->overlay.p++, 0xE, gZBuffer);
+
+    Graph_CloseDisps(dispRef, gfxCtx, "../game.c", 838);
+}
+
+void func_800C49F4(GraphicsContext* gfxCtx) {
+    Gfx* newDlist;
+    Gfx* polyOpaP;
+    Gfx* dispRefs[5];
+
+    Graph_OpenDisps(dispRefs, gfxCtx, "../game.c", 846);
+
+    newDlist = Graph_GfxPlusOne(polyOpaP = gfxCtx->polyOpa.p);
+    gSPDisplayList(gfxCtx->overlay.p++, newDlist);
+
+    // necessary to match
+    if (1) {
+        gSPEndDisplayList(newDlist++);
+        Graph_BranchDlist(polyOpaP, newDlist);
+        gfxCtx->polyOpa.p = newDlist;
+    }
+
+    Graph_CloseDisps(dispRefs, gfxCtx, "../game.c", 865);
+}
+
+void GameState_ReqPadData(GameState* gameState) {
+    PadMgr_RequestPadData(&gPadMgr, &gameState->input, 1);
+}
+
+#ifdef NON_MATCHING
+// Minor reodering and regalloc
+void GameState_Update(GameState* gameState) {
+    GraphicsContext* gfxCtx = gameState->gfxCtx;
+    GameState_SetFrameBuffer(gameState->gfxCtx);
+
+    gameState->main(gameState);
+
+    func_800C4344(gameState);
+
+    if (SREG(63) == 1) {
+        if (SREG(48) < 0) {
+            SREG(48) = 0;
+            gfxCtx->viMode = &gViConfigMode;
+            gfxCtx->viFeatures = gViConfigFeatures;
+            gfxCtx->xScale = gViConfigXScale;
+            gfxCtx->yScale = gViConfigYScale;
+        } else if (SREG(48) > 0) {
+            func_800ACAF8(&D_80166528, gameState->input, gfxCtx);
+            gfxCtx->viMode = &D_80166528.viMode;
+            gfxCtx->xScale = 1.0f;
+            gfxCtx->yScale = 1.0f;
+            gfxCtx->viFeatures = D_80166528.viFeatures;
+        }
+    } else if (SREG(63) >= 2) {
+        gfxCtx->viMode = &gViConfigMode;
+        gfxCtx->viFeatures = gViConfigFeatures;
+        gfxCtx->xScale = gViConfigXScale;
+        gfxCtx->yScale = gViConfigYScale;
+        if (SREG(63) == 6 || (SREG(63) == 2 && osTvType == 1)) {
+            gfxCtx->viMode = &osViModeNtscLan1;
+            gfxCtx->yScale = 1.0f;
+        }
+
+        if (SREG(63) == 5 || (SREG(63) == 2 && osTvType == 2)) {
+            gfxCtx->viMode = &osViModeMpalLan1;
+            gfxCtx->yScale = 1.0f;
+        }
+
+        if (SREG(63) == 4 || (SREG(63) == 2 && osTvType == 0)) {
+            gfxCtx->viMode = &osViModePalLan1;
+            gfxCtx->yScale = 1.0f;
+        }
+
+        if (SREG(63) == 3 || (SREG(63) == 2 && osTvType == 0)) {
+            gfxCtx->viMode = &osViModeFpalLan1;
+            gfxCtx->yScale = 0.833f;
+        }
+    } else {
+        gfxCtx->viMode = NULL;
+    }
+
+    if (HREG(80) == 0x15) {
+        if (HREG(95) != 0x15) {
+            HREG(95) = 0x15;
+            HREG(81) = 0;
+            HREG(82) = gViConfigAdditionalScanLines;
+            HREG(83) = 0;
+            HREG(84) = 0;
+        }
+
+        HREG(82) = CLAMP(HREG(82), 0, 0x30);
+
+        if ((HREG(83) != HREG(82)) || HREG(84) != HREG(81)) {
+            HREG(83) = HREG(82);
+            HREG(84) = HREG(81);
+            gViConfigAdditionalScanLines = HREG(82);
+            gViConfigYScale = HREG(81) == 0 ? 240.0f / ((u8)HREG(82) + 240.0f) : 1.0f;
+            D_80009430 = 1;
+        }
+    }
+
+    if (SREG(94) != 2) {
+        GameState_Draw(gameState, gameState->gfxCtx);
+        func_800C49F4(gameState->gfxCtx);
+    }
+
+    gameState->frames++;
+}
+#else
+#pragma GLOBAL_ASM("asm/non_matchings/code/game/GameState_Update.s")
+#endif
+
+void GameState_InitArena(GameState* gameState, size_t size) {
+    void* arena;
+
+    // Hyrule reserved size =% u bytes
+    osSyncPrintf("ハイラル確保 サイズ＝%u バイト\n");
+    arena = GameAlloc_MallocDebug(&gameState->alloc, size, "../game.c", 992);
+    if (arena != NULL) {
+        THA_Ct(&gameState->tha, arena, size);
+        // Successful Hyral
+        osSyncPrintf("ハイラル確保成功\n");
+    } else {
+        THA_Ct(&gameState->tha, NULL, 0);
+        // Failure to secure Hyrule
+        osSyncPrintf("ハイラル確保失敗\n");
+        Fault_AddHungupAndCrash("../game.c", 999);
+    }
+}
+
+#ifdef NON_MATCHING
+// stack
+void GameState_Realloc(GameState* gameState, size_t size) {
+    s32 pad;
+    void* gameArena;
+    u32 systemMaxFree;
+    u32 systemFree;
+    u32 systemAlloc;
+    void* thaBufp;
+
+    thaBufp = gameState->tha.bufp;
+    THA_Dt(&gameState->tha);
+    GameAlloc_Free(&gameState->alloc, thaBufp);
+    // Hyrule temporarily released !!
+    osSyncPrintf("ハイラル一時解放!!\n");
+    SystemArena_GetSizes(&systemMaxFree, &systemFree, &systemAlloc);
+    if ((systemMaxFree - 0x10) < size) {
+        osSyncPrintf("%c", 7);
+        osSyncPrintf(VT_FGCOL(RED));
+
+        // Not enough memory. Change the hyral size to the largest possible value
+        osSyncPrintf("メモリが足りません。ハイラルサイズを可能な最大値に変更します\n");
+        osSyncPrintf("(hyral=%08x max=%08x free=%08x alloc=%08x)\n", size, systemMaxFree, systemFree, systemAlloc);
+        osSyncPrintf(VT_RST);
+        size = systemMaxFree - 0x10;
+    }
+
+    // Hyral reallocate size =% u bytes
+    osSyncPrintf("ハイラル再確保 サイズ＝%u バイト\n", size);
+    gameArena = GameAlloc_MallocDebug(&gameState->alloc, size, "../game.c", 1033);
+    if (gameArena != NULL) {
+        THA_Ct(&gameState->tha, gameArena, size);
+        // Successful reacquisition of Hyrule
+        osSyncPrintf("ハイラル再確保成功\n");
+    } else {
+        THA_Ct(&gameState->tha, NULL, 0);
+        // Failure to secure Hyral
+        osSyncPrintf("ハイラル再確保失敗\n");
+        SystemArena_Display();
+        Fault_AddHungupAndCrash("../game.c", 1044);
+    }
+}
+#else
+#pragma GLOBAL_ASM("asm/non_matchings/code/game/GameState_Realloc.s")
+#endif
+
+void GameState_Init(GameState* gameState, GameStateFunc init, GraphicsContext* gfxCtx) {
+    u64 startTime;
+    u64 endTime;
+
+    // game constructor start
+    osSyncPrintf("game コンストラクタ開始\n");
+    gameState->gfxCtx = gfxCtx;
+    gameState->frames = 0;
+    gameState->main = NULL;
+    gameState->destroy = NULL;
+    gameState->running = 1;
+    startTime = osGetTime();
+    gameState->size = 0;
+    gameState->init = NULL;
+    endTime = osGetTime();
+
+    // game_set_next_game_null processing time% d us
+    osSyncPrintf("game_set_next_game_null 処理時間 %d us\n", OS_CYCLES_TO_USEC(endTime - startTime));
+    startTime = endTime;
+    GameAlloc_Init(&gameState->alloc);
+
+    endTime = osGetTime();
+    // gamealloc_init processing time% d us
+    osSyncPrintf("gamealloc_init 処理時間 %d us\n", OS_CYCLES_TO_USEC(endTime - startTime));
+
+    startTime = endTime;
+    GameState_InitArena(gameState, 0x100000);
+    SREG(30) = 3;
+    init(gameState);
+
+    endTime = osGetTime();
+    // init processing time% d us
+    osSyncPrintf("init 処理時間 %d us\n", OS_CYCLES_TO_USEC(endTime - startTime));
+
+    startTime = endTime;
+    LogUtils_CheckNullPointer("this->cleanup", gameState->destroy, "../game.c", 1088);
+    func_800ACE70(&D_801664F0);
+    func_800AD920(&D_80166500);
+    func_800AD000(&sMonoColors);
+    if (SREG(48) == 0) {
+        func_800ACA28(&D_80166528);
+    }
+    SpeedMeter_Init(&D_801664D0);
+    func_800AA0B4();
+    osSendMesg(&gameState->gfxCtx->queue, NULL, OS_MESG_BLOCK);
+
+    endTime = osGetTime();
+    // Other initialization processing time% d us
+    osSyncPrintf("その他初期化 処理時間 %d us\n", OS_CYCLES_TO_USEC(endTime - startTime));
+
+    Fault_AddClient(&sGameFaultClient, &GameState_FaultPrint, NULL, NULL);
+
+    // game constructor end
+    osSyncPrintf("game コンストラクタ終了\n");
+}
+
+void GameState_Destroy(GameState* gameState) {
+    // game destructor start
+    osSyncPrintf("game デストラクタ開始\n");
+    func_800C3C20();
+    func_800F3054();
+    osRecvMesg(&gameState->gfxCtx->queue, NULL, OS_MESG_BLOCK);
+    LogUtils_CheckNullPointer("this->cleanup", gameState->destroy, "../game.c", 1139);
+    if (gameState->destroy != NULL) {
+        gameState->destroy(gameState);
+    }
+    func_800AA0F0();
+    SpeedMeter_Destroy(&D_801664D0);
+    func_800ACE90(&D_801664F0);
+    func_800AD950(&D_80166500);
+    func_800AD054(&sMonoColors);
+    if (SREG(48) == 0) {
+        func_800ACA90(&D_80166528);
+    }
+    THA_Dt(&gameState->tha);
+    GameAlloc_Cleanup(&gameState->alloc);
+    SystemArena_Display();
+    Fault_RemoveClient(&sGameFaultClient);
+
+    // game destructor end
+    osSyncPrintf("game デストラクタ終了\n");
+}
+
+GameStateFunc GameState_GetInit(GameState* gameState) {
+    return gameState->init;
+}
+
+size_t GameState_GetSize(GameState* gameState) {
+    return gameState->size;
+}
+
+u32 GameState_IsRunning(GameState* gameState) {
+    return gameState->running;
+}
+
+void* GameState_AllocEnd(GameState* gameState, size_t size, char* file, s32 line) {
+    void* ret;
+
+    if (THA_IsCrash(&gameState->tha)) {
+        osSyncPrintf("ハイラルは滅亡している\n");
+        ret = NULL;
+    } else if (THA_GetSize(&gameState->tha) < size) {
+        // Hyral on the verge of extinction does not have% d bytes left (% d bytes until extinction)
+        osSyncPrintf("滅亡寸前のハイラルには %d バイトの余力もない（滅亡まであと %d バイト）\n", size,
+                     THA_GetSize(&gameState->tha));
+        ret = NULL;
+    } else {
+        ret = THA_AllocEndAlign16(&gameState->tha, size);
+        if (THA_IsCrash(&gameState->tha)) {
+            // Hyrule has been destroyed
+            osSyncPrintf("ハイラルは滅亡してしまった\n");
+            ret = NULL;
+        }
+    }
+    if (ret != NULL) {
+        osSyncPrintf(VT_FGCOL(GREEN));
+        osSyncPrintf("game_alloc(%08x) %08x-%08x [%s:%d]\n", size, ret, (u32)ret + size, file, line);
+        osSyncPrintf(VT_RST);
+    }
+    return ret;
+}
+
+void* GameState_AllocEndAlign16(GameState* gameState, size_t size) {
+    return THA_AllocEndAlign16(&gameState->tha, size);
+}
+
+s32 GameState_GetArenaSize(GameState* gameState) {
+    return THA_GetSize(&gameState->tha);
+}