Dump items and start decomp item_use

src/data/items.json.txt

@@ -0,0 +1,31 @@
+{{ doNotModifyHeader }}
+## for item in items
+## if item.pocket == "POCKET_TM_CASE"
+extern const u8 gMoveDescription_{{ item.moveId }}[];
+## endif
+{% if item.itemId != "ITEM_NONE" %}const u8 gItemDescription_{{ item.itemId }}[] = _("{{ item.description_english }}");{% endif %}
+## endfor
+const u8 gItemDescription_ITEM_NONE[] = _("?????");
+
+const struct Item gItems[] = {
+    {% for item in items %}{
+        .name = _("{{ item.english }}"),
+        .itemId = {{ item.itemId }},
+        .price = {{ item.price }},
+        .holdEffect = {{ item.holdEffect }},
+        .holdEffectParam = {{ item.holdEffectParam }},
+## if item.pocket == "POCKET_TM_CASE"
+        .description = gMoveDescription_{{ item.moveId }},
+## else
+        .description = gItemDescription_{{ item.itemId }},
+## endif
+        .importance = {{ item.importance }},
+        .exitsBagOnUse = {{ item.exitsBagOnUse }},
+        .pocket = {{ item.pocket }},
+        .type = {{ item.type }},
+        .fieldUseFunc = {{ item.fieldUseFunc }},
+        .battleUsage = {{ item.battleUsage }},
+        .battleUseFunc = {{ item.battleUseFunc }},
+        .secondaryId = {{ item.secondaryId }}
+    }, {% endfor %}
+};

src/item.c

@@ -0,0 +1,8 @@
+#include "global.h"
+#include "item.h"
+#include "item_use.h"
+#include "constants/hold_effects.h"
+#include "constants/items.h"
+
+// Item descriptions and data
+#include "data/items.h"

src/item_use.c

@@ -0,0 +1,242 @@
+#include "global.h"
+#include "berry_pouch.h"
+#include "bike.h"
+#include "event_data.h"
+#include "field_fadetransition.h"
+#include "field_map_obj_helpers.h"
+#include "field_player_avatar.h"
+#include "field_weather.h"
+#include "fieldmap.h"
+#include "item.h"
+#include "item_menu.h"
+#include "mail.h"
+#include "map_obj_80688E4.h"
+#include "map_obj_lock.h"
+#include "metatile_behavior.h"
+#include "new_menu_helpers.h"
+#include "overworld.h"
+#include "script.h"
+#include "sound.h"
+#include "string_util.h"
+#include "strings.h"
+#include "task.h"
+#include "constants/flags.h"
+#include "constants/items.h"
+#include "constants/songs.h"
+
+EWRAM_DATA void (*sItemUseOnFieldCB)(u8 taskId) = NULL;
+
+void sub_80A1084(void);
+void sub_80A109C(u8 taskId);
+void sub_80A112C(u8 taskId);
+void sub_80A11C0(u8 taskId);
+bool8 sub_80A1194(void);
+void sub_80A1208(void);
+void ItemUseOnFieldCB_Bicycle(u8 taskId);
+bool8 ItemUseCheckFunc_Rod(void);
+void ItemUseOnFieldCB_Rod(u8 taskId);
+void sub_813EC8C(u8 taskId);
+void sub_80A1750(u8 taskId);
+
+extern void (*const gUnknown_83E2954[])(void);
+
+void sub_80A0FBC(u8 taskId)
+{
+    u8 itemType;
+    if (gSpecialVar_ItemId == ITEM_ENIGMA_BERRY)
+        itemType = gTasks[taskId].data[4] - 1;
+    else
+        itemType = ItemId_GetType(gSpecialVar_ItemId) - 1;
+    if (GetPocketByItemId(gSpecialVar_ItemId) == POCKET_BERRY_POUCH)
+    {
+        sub_813D934(gUnknown_83E2954[itemType]);
+        sub_813D808(taskId);
+    }
+    else
+    {
+        sub_8108EE0(gUnknown_83E2954[itemType]);
+        if (itemType == 1)
+            sub_8108CB4();
+        sub_8108B50(taskId);
+    }
+}
+
+void sub_80A103C(u8 taskId)
+{
+    if (gTasks[taskId].data[3] != 1)
+    {
+        gFieldCallback = sub_80A1084;
+        sub_80A0FBC(taskId);
+    }
+    else
+        sItemUseOnFieldCB(taskId);
+}
+
+void sub_80A1084(void)
+{
+    sub_807DC00();
+    CreateTask(sub_80A109C, 8);
+}
+
+void sub_80A109C(u8 taskId)
+{
+    if (sub_807AA70() == TRUE)
+    {
+        sItemUseOnFieldCB(taskId);
+    }
+}
+
+void sub_80A10C4(u8 taskId, bool8 a1, u8 a2, const u8 * str)
+{
+    StringExpandPlaceholders(gStringVar4, str);
+    if (a1 == FALSE)
+        sub_8108E70(taskId, a2, gStringVar4, sub_810A1F8);
+    else
+        DisplayItemMessageOnField(taskId, a2, gStringVar4, sub_80A112C);
+}
+
+void sub_80A1110(u8 taskId, bool8 a1)
+{
+    sub_80A10C4(taskId, a1, 4, gUnknown_8416425);
+}
+
+void sub_80A112C(u8 taskId)
+{
+    ClearDialogWindowAndFrame(0, 1);
+    DestroyTask(taskId);
+    sub_80696C0();
+    ScriptContext2_Disable();
+}
+
+u8 sub_80A1150(u16 itemId)
+{
+    if (ItemId_GetPocket(itemId) == POCKET_TM_CASE)
+        return 1;
+    else if (ItemId_GetFieldFunc(itemId) == sub_80A1750)
+        return 2;
+    else
+        return 0;
+}
+
+void sub_80A1184(void)
+{
+    gFieldCallback2 = sub_80A1194;
+}
+
+bool8 sub_80A1194(void)
+{
+    player_bitmagic();
+    ScriptContext2_Enable();
+    sub_807DC00();
+    CreateTask(sub_80A11C0, 10);
+    gUnknown_2031DE0 = 0;
+    return TRUE;
+}
+
+void sub_80A11C0(u8 taskId)
+{
+    if (sub_807AA70() == TRUE)
+    {
+        UnfreezeMapObjects();
+        ScriptContext2_Disable();
+        DestroyTask(taskId);
+    }
+}
+
+void sub_80A11E8(u8 taskId)
+{
+    sub_8108EE0(sub_80A1208);
+    sub_8108B50(taskId);
+}
+
+void sub_80A1208(void)
+{
+    u16 buffer[18];
+
+    buffer[16] = gSpecialVar_ItemId;
+    sub_80BEBEC(buffer, UseFameCheckerFromMenu, 0);
+}
+
+void sub_80A122C(u8 taskId)
+{
+    s16 x, y;
+    u8 behavior;
+
+    PlayerGetDestCoords(&x, &y);
+    behavior = MapGridGetMetatileBehaviorAt(x, y);
+
+    if (FlagGet(FLAG_0x830) == TRUE
+     || MetatileBehavior_ReturnFalse_17(behavior) == TRUE
+     || MetatileBehavior_ReturnFalse_18(behavior) == TRUE
+     || MetatileBehavior_ReturnFalse_15(behavior) == TRUE
+     || MetatileBehavior_ReturnFalse_16(behavior) == TRUE)
+        sub_80A10C4(taskId, gTasks[taskId].data[3], 2, gUnknown_8416451);
+    else if (sub_8055C9C() == TRUE && !sub_80BD540())
+    {
+        sItemUseOnFieldCB = ItemUseOnFieldCB_Bicycle;
+        sub_80A103C(taskId);
+    }
+    else
+        sub_80A1110(taskId, gTasks[taskId].data[3]);
+}
+
+void ItemUseOnFieldCB_Bicycle(u8 taskId)
+{
+    if (!TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_MACH_BIKE | PLAYER_AVATAR_FLAG_ACRO_BIKE))
+        PlaySE(SE_JITENSYA);
+    sub_80BD5C8(PLAYER_AVATAR_FLAG_MACH_BIKE | PLAYER_AVATAR_FLAG_ACRO_BIKE);
+    sub_80696C0();
+    ScriptContext2_Disable();
+    DestroyTask(taskId);
+}
+
+void sub_80A1338(u8 taskId)
+{
+    if (ItemUseCheckFunc_Rod() == TRUE)
+    {
+        sItemUseOnFieldCB = ItemUseOnFieldCB_Rod;
+        sub_80A103C(taskId);
+    }
+    else
+        sub_80A1110(taskId, gTasks[taskId].data[3]);
+}
+
+bool8 ItemUseCheckFunc_Rod(void)
+{
+    s16 x, y;
+    u16 behavior;
+
+    GetXYCoordsOneStepInFrontOfPlayer(&x, &y);
+    behavior = MapGridGetMetatileBehaviorAt(x, y);
+
+    if (MetatileBehavior_IsWaterfall(behavior))
+        return FALSE;
+    if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_4))
+        return FALSE;
+    if (!TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_SURFING))
+    {
+        if (IsPlayerFacingSurfableFishableWater())
+            return TRUE;
+    }
+    else
+    {
+        if (MetatileBehavior_IsSurfable(behavior) && !MapGridIsImpassableAt(x, y))
+            return TRUE;
+        if (MetatileBehavior_ReturnFalse_6(behavior) == TRUE)
+            return TRUE;
+    }
+    return FALSE;
+}
+
+void ItemUseOnFieldCB_Rod(u8 taskId)
+{
+    sub_805D2C0(ItemId_GetSecondaryId(gSpecialVar_ItemId));
+    DestroyTask(taskId);
+}
+
+void ItemUseOutOfBattle_Itemfinder(u8 taskId)
+{
+    IncrementGameStat(GAME_STAT_USED_ITEMFINDER);
+    sItemUseOnFieldCB = sub_813EC8C;
+    sub_80A103C(taskId);
+}