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0xC1 — map_change_check

Map change/map-in-out helper. It resolves a character/person, may fetch an event value, calls CBackGround::LoadData, CBackGround::ChangeMap, and CCharacterPerson::CheckMapInOut.

proven— handler traced, and exercised by at least one shipped script.

At a glance

Opcode0xC1 (193)
HandlerCRadiScript::Command_c1
SignatureCRadiScript::Command_c1(int,SCR_DATA*,unsigned int,unsigned int)
Translation unitr_script_runc.cpp
Address— debug build; click for all 3
Handler size0x2A0 (672 bytes)
Engine namemap_change_check
FamilyPerson, battle and effects
Command size4 + extra_words * 4 bytes

Handler behaviour

Map change/map-in-out helper. It resolves a character/person, may fetch an event value, calls CBackGround::LoadData, CBackGround::ChangeMap, and CCharacterPerson::CheckMapInOut.

Encoding

The command header is one 32-bit word, as described in §3 Instruction encoding:

 31            24 23            16 15             8 7              0
+----------------+----------------+----------------+----------------+
|  flags         |  argument byte |  extra words   |  0xC1          |
+----------------+----------------+----------------+----------------+

Bits 8–15 give the number of 32-bit operand words that follow. Bits 16–23 are handed to the handler as a bitfield; on character commands bit 0 normally says whether a character selector word is present. Bit 31 is the keep-going bit.

Operand fields

3 documented fields. input fields are read from the command's operand words; derived fields are computed from other fields rather than stored separately.

FieldRoleMeaning
change_mapderivedSet when the command also changes the map.
characterinputThe packed 32-bit character selector word. Its low half is the character id and byte 2 is a secondary class/variant input; see character_number and character_variant.
mapinputWhich map the command loads or switches to.

Engine calls

Engine functions this handler was observed calling:

  • CBackGround::ChangeMap(unsigned int,unsigned int)
  • CBackGround::LoadData(unsigned int,unsigned int,bool)
  • CCharacterPerson::CheckMapInOut(unsigned int)
  • CRadiScript::GetAbstractionCharacterNumber(unsigned int&,unsigned int&,const SCR_DATA*)
  • CRadiScript::GetEventValueForScript(int,const SCR_DATA*)
  • GetAbstractionCharacterNumber(unsigned int&)

Bit masks

Masks the handler applies to its argument byte or operand words:

0x0001 0xFFFF 0x00FF 0x0002 0x0004 0x0080