InitFieldObjectStateFromTemplate (nonmatching, same as ruby)

1 files changed, 229 insertions, 1 deletions

diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 1b4ba0b7f..b97d5c0dc 100644
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -15,14 +15,19 @@
 /*static*/ void sub_808D450(void);
 /*static*/ u8 GetFieldObjectIdByLocalId(u8);
 /*static*/ u8 GetFieldObjectIdByLocalIdAndMapInternal(u8, u8, u8);
+/*static*/ bool8 GetAvailableFieldObjectSlot(u16, u8, u8, u8 *);
+/*static*/ void FieldObjectHandleDynamicGraphicsId(struct MapObject *);
 
 // ROM data
 
+const u8 gUnknown_085055CD[0x53];
+const u8 gUnknown_0850557C[0x51];
+
 // Code
 
 /*static*/ void npc_clear_ids_and_state(struct MapObject *mapObject)
 {
-    memset(mapObject, 0, sizeof(struct MapObject));
+    *mapObject = (struct MapObject){};
     mapObject->localId = 0xFF;
     mapObject->mapNum = -1;
     mapObject->mapGroup = -1;
@@ -124,3 +129,226 @@ u8 GetFieldObjectIdByLocalIdAndMapInternal(u8 localId, u8 mapId, u8 mapGroupId)
     }
     return ARRAY_COUNT(gMapObjects);
 }
+
+u8 GetFieldObjectIdByLocalId(u8 localId)
+{
+    u8 i;
+
+    for (i = 0; i < ARRAY_COUNT(gMapObjects); i ++)
+    {
+        if (gMapObjects[i].active && gMapObjects[i].localId == localId)
+        {
+            return i;
+        }
+    }
+    return ARRAY_COUNT(gMapObjects);
+}
+
+// This function has the same nonmatching quirk as in Ruby/Sapphire.
+#ifdef NONMATCHING
+u8 InitFieldObjectStateFromTemplate(struct MapObjectTemplate *template, u8 mapId, u8 mapGroupId)
+{
+    u8 slot;
+    struct MapObject *mapObject;
+    u16 x;
+    u16 y;
+
+    if (GetAvailableFieldObjectSlot(template->localId, mapId, mapGroupId, &slot))
+    {
+        return ARRAY_COUNT(gMapObjects);
+    }
+    mapObject = &gMapObjects[slot];
+    npc_clear_ids_and_state(mapObject);
+    x = template->x + 7;
+    y = template->y + 7;
+    mapObject->active = TRUE;
+    mapObject->mapobj_bit_2 = TRUE;
+    mapObject->graphicsId = template->graphicsId;
+    mapObject->animPattern = template->movementType;
+    mapObject->localId = template->localId;
+    mapObject->mapNum = mapId;
+    mapObject->mapGroup = mapGroupId;
+    mapObject->coords1.x = x;
+    mapObject->coords1.y = y;
+    mapObject->coords2.x = x;
+    mapObject->coords2.y = y;
+    mapObject->coords3.x = x;
+    mapObject->coords3.y = y;
+    mapObject->mapobj_unk_0B_0 = template->elevation;
+    mapObject->elevation = template->elevation;
+    mapObject->mapobj_unk_19 = template->unkA_0;
+    mapObject->mapobj_unk_19b = template->unkA_4;
+    mapObject->trainerType = template->unkC;
+    mapObject->trainerRange_berryTreeId = template->unkE;
+    mapObject->mapobj_unk_20 = gUnknown_085055CD[template->movementType];
+    FieldObjectSetDirection(mapObject, mapObject->mapobj_unk_20);
+    FieldObjectHandleDynamicGraphicsId(mapObject);
+    if (gUnknown_0850557C[mapObject->animPattern])
+    {
+        if (mapObject->mapobj_unk_19 == 0)
+        {
+            mapObject->mapobj_unk_19 ++;
+        }
+        if (mapObject->mapobj_unk_19b == 0)
+        {
+            mapObject->mapobj_unk_19b ++;
+        }
+    }
+    return slot;
+}
+#else
+__attribute__((naked)) u8 InitFieldObjectStateFromTemplate(struct MapObjectTemplate *template, u8 mapId, u8 mapGroupId)
+{
+    asm_unified("\tpush {r4-r7,lr}\n"
+                "\tmov r7, r9\n"
+                "\tmov r6, r8\n"
+                "\tpush {r6,r7}\n"
+                "\tsub sp, 0x4\n"
+                "\tadds r5, r0, 0\n"
+                "\tlsls r1, 24\n"
+                "\tlsrs r6, r1, 24\n"
+                "\tlsls r2, 24\n"
+                "\tlsrs r7, r2, 24\n"
+                "\tldrb r0, [r5]\n"
+                "\tadds r1, r6, 0\n"
+                "\tadds r2, r7, 0\n"
+                "\tmov r3, sp\n"
+                "\tbl GetAvailableFieldObjectSlot\n"
+                "\tlsls r0, 24\n"
+                "\tcmp r0, 0\n"
+                "\tbeq _0808D66E\n"
+                "\tmovs r0, 0x10\n"
+                "\tb _0808D762\n"
+                "_0808D66E:\n"
+                "\tmov r0, sp\n"
+                "\tldrb r1, [r0]\n"
+                "\tlsls r0, r1, 3\n"
+                "\tadds r0, r1\n"
+                "\tlsls r0, 2\n"
+                "\tldr r1, =gMapObjects\n"
+                "\tadds r4, r0, r1\n"
+                "\tadds r0, r4, 0\n"
+                "\tbl npc_clear_ids_and_state\n"
+                "\tldrh r3, [r5, 0x4]\n"
+                "\tadds r3, 0x7\n"
+                "\tlsls r3, 16\n"
+                "\tlsrs r3, 16\n"
+                "\tldrh r2, [r5, 0x6]\n"
+                "\tadds r2, 0x7\n"
+                "\tlsls r2, 16\n"
+                "\tlsrs r2, 16\n"
+                "\tldrb r0, [r4]\n"
+                "\tmovs r1, 0x1\n"
+                "\torrs r0, r1\n"
+                "\tmovs r1, 0x4\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4]\n"
+                "\tldrb r0, [r5, 0x1]\n"
+                "\tstrb r0, [r4, 0x5]\n"
+                "\tldrb r0, [r5, 0x9]\n"
+                "\tstrb r0, [r4, 0x6]\n"
+                "\tldrb r0, [r5]\n"
+                "\tstrb r0, [r4, 0x8]\n"
+                "\tstrb r6, [r4, 0x9]\n"
+                "\tstrb r7, [r4, 0xA]\n"
+                "\tstrh r3, [r4, 0xC]\n"
+                "\tstrh r2, [r4, 0xE]\n"
+                "\tstrh r3, [r4, 0x10]\n"
+                "\tstrh r2, [r4, 0x12]\n"
+                "\tstrh r3, [r4, 0x14]\n"
+                "\tstrh r2, [r4, 0x16]\n"
+                "\tldrb r0, [r5, 0x8]\n"
+                "\tmovs r7, 0xF\n"
+                "\tadds r1, r7, 0\n"
+                "\tands r1, r0\n"
+                "\tldrb r2, [r4, 0xB]\n"
+                "\tmovs r0, 0x10\n"
+                "\tnegs r0, r0\n"
+                "\tmov r8, r0\n"
+                "\tands r0, r2\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4, 0xB]\n"
+                "\tldrb r1, [r5, 0x8]\n"
+                "\tlsls r1, 4\n"
+                "\tands r0, r7\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4, 0xB]\n"
+                "\tldrb r1, [r5, 0xA]\n"
+                "\tlsls r1, 28\n"
+                "\tmovs r0, 0xF\n"
+                "\tmov r9, r0\n"
+                "\tlsrs r1, 28\n"
+                "\tldrb r2, [r4, 0x19]\n"
+                "\tmov r0, r8\n"
+                "\tands r0, r2\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4, 0x19]\n"
+                "\tldrb r1, [r5, 0xA]\n"
+                "\tlsrs r1, 4\n"
+                "\tlsls r1, 4\n"
+                "\tands r0, r7\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4, 0x19]\n"
+                "\tldrh r0, [r5, 0xC]\n"
+                "\tstrb r0, [r4, 0x7]\n"
+                "\tldrh r0, [r5, 0xE]\n"
+                "\tstrb r0, [r4, 0x1D]\n"
+                "\tldr r1, =gUnknown_085055CD\n"
+                "\tldrb r0, [r5, 0x9]\n"
+                "\tadds r0, r1\n"
+                "\tldrb r1, [r0]\n"
+                "\tadds r0, r4, 0\n"
+                "\tadds r0, 0x20\n"
+                "\tstrb r1, [r0]\n"
+                "\tldrb r1, [r0]\n"
+                "\tadds r0, r4, 0\n"
+                "\tbl FieldObjectSetDirection\n"
+                "\tadds r0, r4, 0\n"
+                "\tbl FieldObjectHandleDynamicGraphicsId\n"
+                "\tldr r1, =gUnknown_0850557C\n"
+                "\tldrb r0, [r4, 0x6]\n"
+                "\tadds r0, r1\n"
+                "\tldrb r0, [r0]\n"
+                "\tcmp r0, 0\n"
+                "\tbeq _0808D75E\n"
+                "\tldrb r2, [r4, 0x19]\n"
+                "\tadds r0, r7, 0\n"
+                "\tands r0, r2\n"
+                "\tcmp r0, 0\n"
+                "\tbne _0808D746\n"
+                "\tlsls r0, r2, 28\n"
+                "\tlsrs r0, 28\n"
+                "\tadds r0, 0x1\n"
+                "\tmov r1, r9\n"
+                "\tands r0, r1\n"
+                "\tmov r1, r8\n"
+                "\tands r1, r2\n"
+                "\torrs r1, r0\n"
+                "\tstrb r1, [r4, 0x19]\n"
+                "_0808D746:\n"
+                "\tldrb r2, [r4, 0x19]\n"
+                "\tmovs r0, 0xF0\n"
+                "\tands r0, r2\n"
+                "\tcmp r0, 0\n"
+                "\tbne _0808D75E\n"
+                "\tlsrs r1, r2, 4\n"
+                "\tadds r1, 0x1\n"
+                "\tlsls r1, 4\n"
+                "\tadds r0, r7, 0\n"
+                "\tands r0, r2\n"
+                "\torrs r0, r1\n"
+                "\tstrb r0, [r4, 0x19]\n"
+                "_0808D75E:\n"
+                "\tmov r0, sp\n"
+                "\tldrb r0, [r0]\n"
+                "_0808D762:\n"
+                "\tadd sp, 0x4\n"
+                "\tpop {r3,r4}\n"
+                "\tmov r8, r3\n"
+                "\tmov r9, r4\n"
+                "\tpop {r4-r7}\n"
+                "\tpop {r1}\n"
+                "\tbx r1\n"
+                ".pool");
+}
+#endif