diff options
Diffstat (limited to 'src/item_use.c')
| -rw-r--r-- | src/item_use.c | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/src/item_use.c b/src/item_use.c new file mode 100644 index 000000000..557705460 --- /dev/null +++ b/src/item_use.c @@ -0,0 +1,414 @@ +#include "global.h" +#include "task.h" +#include "item.h" +#include "palette.h" +#include "weather.h" +#include "string_util.h" +#include "menu.h" +#include "mail.h" +#include "asm.h" +#include "rom4.h" +#include "metatile_behavior.h" +#include "field_player_avatar.h" +#include "event_data.h" +#include "map_obj_lock.h" +#include "script.h" +#include "field_player_avatar.h" +#include "sound.h" +#include "songs.h" + +extern void (* const gExitToOverworldFuncList[])(); +extern void (* gUnknown_03005D00)(u8); +extern void (* gUnknown_0300485C)(void); + +extern void HandleItemMenuPaletteFade(u8); +extern void ExecuteItemUseFromBlackPalette(void); +extern void DisplayItemMessageOnField(u8, u8*, TaskFunc, u16); +extern void CleanUpItemMenuMessage(u8); +extern void CleanUpOverworldMessage(u8); +extern void ItemUseOutOfBattle_TMHM(u8); +extern void ItemUseOutOfBattle_EvolutionStone(u8); +extern void ItemUseOnFieldCB_Bike(u8); +extern void ItemUseOnFieldCB_Rod(u8); +extern void ItemUseOnFieldCB_Itemfinder(u8); +extern void sub_80A5D04(void); +extern bool8 IsBikingDisallowedByPlayer(void); +extern void GetOnOffBike(u8); +extern u8 GetPlayerDirectionTowardsHiddenItem(s16, s16); +extern void SetPlayerDirectionTowardsItem(u8); +extern void DisplayItemRespondingMessageAndExitItemfinder(u8); +extern void RotatePlayerAndExitItemfinder(u8); + +extern u8 gOtherText_DadsAdvice[]; +extern u8 gOtherText_CantGetOffBike[]; +extern u8 gOtherText_NoResponse[]; + +extern u8 gItemFinderDirections[]; + +extern u16 gScriptItemId; + +bool8 ItemfinderCheckForHiddenItems(struct MapEvents *events, int); +void RunItemfinderResults(u8); +void ExitItemfinder(u8); + +void ExecuteSwitchToOverworldFromItemUse(u8 taskId) +{ + u8 taskData; + + if(gScriptItemId == 0xAF) + taskData = gTasks[taskId].data[15] - 1; + else + taskData = ItemId_GetType(gScriptItemId) - 1; + + gTasks[taskId].data[8] = (u32)gExitToOverworldFuncList[taskData] >> 16; + gTasks[taskId].data[9] = (u32)gExitToOverworldFuncList[taskData]; + gTasks[taskId].func = HandleItemMenuPaletteFade; +} + +void ItemMenu_ConfirmNormalFade(u8 var) +{ + ExecuteSwitchToOverworldFromItemUse(var); + BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0); +} + +void ItemMenu_ConfirmComplexFade(u8 var) +{ + ExecuteSwitchToOverworldFromItemUse(var); + fade_screen(1, 0); +} + +void SetUpItemUseOnFieldCallback(u8 taskId) +{ + if(gTasks[taskId].data[2] != 1) + { + gUnknown_0300485C = (void *)ExecuteItemUseFromBlackPalette; + ItemMenu_ConfirmNormalFade(taskId); + } + else + gUnknown_03005D00(taskId); +} + +void HandleDeniedItemUseMessage(u8 var1, u8 playerMenuStatus, const u8 *var3) +{ + StringExpandPlaceholders(gStringVar4, var3); + + switch(playerMenuStatus) + { + case 0: // Item Menu + MenuZeroFillWindowRect(0, 13, 13, 20); + DisplayItemMessageOnField(var1, gStringVar4, CleanUpItemMenuMessage, 1); + break; + default: // Field + DisplayItemMessageOnField(var1, gStringVar4, CleanUpOverworldMessage, 0); + break; + } +} + +void DisplayDadsAdviceCannotUseItemMessage(u8 var1, u8 playerMenuStatus) +{ + HandleDeniedItemUseMessage(var1, playerMenuStatus, gOtherText_DadsAdvice); +} + +void DisplayCantGetOffBikeItemMessage(u8 var1, u8 playerMenuStatus) +{ + HandleDeniedItemUseMessage(var1, playerMenuStatus, gOtherText_CantGetOffBike); +} + +u8 CheckIfItemIsTMHMOrEvolutionStone(u16 itemId) +{ + if(ItemId_GetFieldFunc(itemId) == ItemUseOutOfBattle_TMHM) + return 1; + else if(ItemId_GetFieldFunc(itemId) == ItemUseOutOfBattle_EvolutionStone) + return 2; + else + return 0; +} + +void ItemMenu_ReadMail(u8 taskId) +{ + struct MailStruct mailStruct; + + if(!gPaletteFade.active) + { + mailStruct.itemId = gScriptItemId; + HandleReadMail(&mailStruct, sub_80A5D04, 0); + DestroyTask(taskId); + } +} + +void ItemUseOutOfBattle_Mail(u8 taskId) +{ + BeginNormalPaletteFade(0xFFFFFFFF, 0, 0, 16, 0); + gTasks[taskId].func = ItemMenu_ReadMail; +} + +void ItemUseOutOfBattle_Bike(u8 taskId) +{ + s16 x, y; + u8 tileBehavior; + + PlayerGetDestCoords(&x, &y); + tileBehavior = MapGridGetMetatileBehaviorAt(x, y); + + if(FlagGet(SYS_CYCLING_ROAD) == TRUE // on cycling road? + || MetatileBehavior_IsVerticalRail(tileBehavior) == TRUE + || MetatileBehavior_IsHorizontalRail(tileBehavior) == TRUE + || MetatileBehavior_IsIsolatedVerticalRail(tileBehavior) == TRUE + || MetatileBehavior_IsIsolatedHorizontalRail(tileBehavior) == TRUE) + { + DisplayCantGetOffBikeItemMessage(taskId, gTasks[taskId].data[2]); + } + else + { + if(IsBikingAllowedByMap() == TRUE && IsBikingDisallowedByPlayer() == FALSE) + { + gUnknown_03005D00 = (void *)ItemUseOnFieldCB_Bike; + SetUpItemUseOnFieldCallback(taskId); + } + else + DisplayDadsAdviceCannotUseItemMessage(taskId, gTasks[taskId].data[2]); + } +} + +void ItemUseOnFieldCB_Bike(u8 taskId) +{ + if(ItemId_GetSecondaryId(gScriptItemId) == 0) + GetOnOffBike(2); + if(ItemId_GetSecondaryId(gScriptItemId) == 1) + GetOnOffBike(4); + + sub_8064E2C(); + ScriptContext2_Disable(); + DestroyTask(taskId); +} + +bool32 CanFish(void) +{ + s16 x, y; + u16 tileBehavior; + + GetXYCoordsOneStepInFrontOfPlayer(&x, &y); + tileBehavior = MapGridGetMetatileBehaviorAt(x, y); + + if (MetatileBehavior_IsWaterfall(tileBehavior)) + return FALSE; + + if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_4)) + return FALSE; + + if (!TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_SURFING)) + { + if (IsPlayerFacingSurfableFishableWater()) + return TRUE; + } + else + { + if (MetatileBehavior_IsSurfableWaterOrUnderwater(tileBehavior) && !MapGridIsImpassableAt(x, y)) + return TRUE; + if (MetatileBehavior_IsBridge(tileBehavior) == TRUE) + return TRUE; + } + + return FALSE; +} + +void ItemUseOutOfBattle_Rod(u8 taskId) +{ + if(CanFish() == TRUE) + { + gUnknown_03005D00 = (void *)ItemUseOnFieldCB_Rod; + SetUpItemUseOnFieldCallback(taskId); + } + else + DisplayDadsAdviceCannotUseItemMessage(taskId, gTasks[taskId].data[2]); +} + +void ItemUseOnFieldCB_Rod(u8 taskId) +{ + StartFishing(ItemId_GetSecondaryId(gScriptItemId)); + DestroyTask(taskId); +} + +void ItemUseOutOfBattle_Itemfinder(u8 var) +{ + IncrementGameStat(0x27); + gUnknown_03005D00 = (void *)ItemUseOnFieldCB_Itemfinder; + SetUpItemUseOnFieldCallback(var); +} + +void ItemUseOnFieldCB_Itemfinder(u8 taskId) +{ + if(ItemfinderCheckForHiddenItems(gMapHeader.events, taskId) == TRUE) + gTasks[taskId].func = RunItemfinderResults; + else + DisplayItemMessageOnField(taskId, gOtherText_NoResponse, ExitItemfinder, 0); +} + +void RunItemfinderResults(u8 taskId) +{ + u8 playerDir; + u8 playerDirToItem; + u8 i; + s16 *data = gTasks[taskId].data; + + if(!data[3]) + { + if(data[4] == 4) + { + playerDirToItem = GetPlayerDirectionTowardsHiddenItem(data[0], data[1]); + if(playerDirToItem) + { + SetPlayerDirectionTowardsItem(gItemFinderDirections[playerDirToItem - 1]); + gTasks[taskId].func = DisplayItemRespondingMessageAndExitItemfinder; + } + else // player is above hidden item. + { + playerDir = player_get_direction_lower_nybble(); + + // rotate player clockwise depending on current direction. + for (i = 0; i < 4; i++) + if (playerDir == gItemFinderDirections[i]) + data[5] = (i + 1) & 3; + + gTasks[taskId].func = RotatePlayerAndExitItemfinder; + data[3] = 0; + data[2] = 0; + } + return; + } + PlaySE(SE_DAUGI); // play the itemfinder jingle 4 times before executing the itemfinder. + data[4]++; + } + data[3] = (data[3] + 1) & 0x1F; +} + +void ExitItemfinder(u8 taskId) +{ + MenuZeroFillWindowRect(0, 14, 29, 19); + sub_8064E2C(); + ScriptContext2_Disable(); + DestroyTask(taskId); +} + +// too much struct math. +__attribute__((naked)) +bool8 ItemfinderCheckForHiddenItems(struct MapEvents *events, int var) +{ + asm(".syntax unified\n\ + push {r4-r7,lr}\n\ + mov r7, r9\n\ + mov r6, r8\n\ + push {r6,r7}\n\ + sub sp, 0x4\n\ + adds r5, r0, 0\n\ + lsls r1, 24\n\ + lsrs r6, r1, 24\n\ + mov r4, sp\n\ + adds r4, 0x2\n\ + mov r0, sp\n\ + adds r1, r4, 0\n\ + bl PlayerGetDestCoords\n\ + ldr r1, _080C9618 @ =gTasks\n\ + lsls r0, r6, 2\n\ + adds r0, r6\n\ + lsls r0, 3\n\ + adds r0, r1\n\ + movs r1, 0\n\ + strh r1, [r0, 0xC]\n\ + movs r3, 0\n\ + mov r9, r4\n\ + ldrb r0, [r5, 0x3]\n\ + cmp r3, r0\n\ + bge _080C95FC\n\ + subs r1, 0x5\n\ + mov r8, r1\n\ +_080C9580:\n\ + lsls r3, 16\n\ + asrs r1, r3, 16\n\ + ldr r2, [r5, 0x10]\n\ + lsls r0, r1, 1\n\ + adds r0, r1\n\ + lsls r4, r0, 2\n\ + adds r1, r4, r2\n\ + ldrb r0, [r1, 0x5]\n\ + adds r7, r3, 0\n\ + cmp r0, 0x7\n\ + bne _080C95EC\n\ + movs r2, 0x96\n\ + lsls r2, 2\n\ + adds r0, r2, 0\n\ + ldrh r1, [r1, 0xA]\n\ + adds r0, r1\n\ + lsls r0, 16\n\ + lsrs r0, 16\n\ + bl FlagGet\n\ + lsls r0, 24\n\ + cmp r0, 0\n\ + bne _080C95EC\n\ + ldr r1, [r5, 0x10]\n\ + adds r1, r4, r1\n\ + ldrh r2, [r1]\n\ + adds r2, 0x7\n\ + mov r0, sp\n\ + ldrh r0, [r0]\n\ + subs r2, r0\n\ + ldrh r0, [r1, 0x2]\n\ + adds r0, 0x7\n\ + mov r3, r9\n\ + ldrh r1, [r3]\n\ + subs r0, r1\n\ + lsls r0, 16\n\ + lsrs r0, 16\n\ + lsls r2, 16\n\ + asrs r1, r2, 16\n\ + movs r3, 0xE0\n\ + lsls r3, 11\n\ + adds r2, r3\n\ + lsrs r2, 16\n\ + cmp r2, 0xE\n\ + bhi _080C95EC\n\ + lsls r0, 16\n\ + asrs r2, r0, 16\n\ + cmp r2, r8\n\ + blt _080C95EC\n\ + cmp r2, 0x5\n\ + bgt _080C95EC\n\ + adds r0, r6, 0\n\ + bl sub_80C9838\n\ +_080C95EC:\n\ + movs r1, 0x80\n\ + lsls r1, 9\n\ + adds r0, r7, r1\n\ + lsrs r3, r0, 16\n\ + asrs r0, 16\n\ + ldrb r2, [r5, 0x3]\n\ + cmp r0, r2\n\ + blt _080C9580\n\ +_080C95FC:\n\ + adds r0, r6, 0\n\ + bl sub_80C9720\n\ + ldr r0, _080C9618 @ =gTasks\n\ + lsls r1, r6, 2\n\ + adds r1, r6\n\ + lsls r1, 3\n\ + adds r1, r0\n\ + movs r3, 0xC\n\ + ldrsh r0, [r1, r3]\n\ + cmp r0, 0x1\n\ + beq _080C961C\n\ + movs r0, 0\n\ + b _080C961E\n\ + .align 2, 0\n\ +_080C9618: .4byte gTasks\n\ +_080C961C:\n\ + movs r0, 0x1\n\ +_080C961E:\n\ + add sp, 0x4\n\ + pop {r3,r4}\n\ + mov r8, r3\n\ + mov r9, r4\n\ + pop {r4-r7}\n\ + pop {r1}\n\ + bx r1\n\ + .syntax divided"); +} |