LcfMapUnit

LcfMapUnit, or LMU for short, is the file-format for map-data of games made with RPG Maker 2000/2003, up to 9999 of them can be in a game. Not everything about a map is stored in LMU-files, data that is needed to be present all the time is stored in RPG_RT.lmt (the LcfMapTree). Also normally, a save-slot will use its own backup-map-data when being loaded. The map will completely reload instead in case its save-count has changed since when the backup was made.

Header

Each file starts with a byte that defines how long the format-identifying string next to it will be. Normally, this is always 10 (0x0A), followed by the text "LcfMapUnit".

File Content

This is the file's core-structure.

		Content	DataType	Details
1	0x01	ChipSetID	BER	Will throw a heavy Error while editing when a ChipSet with the ID is not present in the Database
2	0x02	Width	BER	Also important for #71/0x47
3	0x03	Height	BER	Also important for #72/0x48
11	0x0B	LoopType	BER	0: None, 1: Vertical, 2: Horizontal, 3: Both
31	0x1F	PanoramaFlag	Boolean
32	0x20	PanoramaFilename	String	Panorama is black when Filename is empty
33	0x21	PanoramaScrollH	Boolean
34	0x22	PanoramaScrollV	Boolean
35	0x23	PanoramaAutoH	Boolean
36	0x24	PanoramaSpeedH	BER	Normally ranging -8~+8 (but not limited to it)
37	0x25	PanoramaAutoV	Boolean
38	0x26	PanoramaSpeedV	BER	Normally ranging -8~+8 (but not limited to it)
71	0x47	Lower Layer	16bitVector	Size must be same as Width (#2/0x02) multiplied by Height (#3/0x03)
72	0x48	Upper Layer	16bitVector	Size must be same as Width (#2/0x02) multiplied by Height (#3/0x03)
81	0x51	Events	Array2D	Up to 9999 Events can be on a Map.
91	0x5B	SaveCount

Events

This structure contains the data of all events on the map. The following table contains the substructure of how a single event is built.

		Content	DataType	Details
1	0x01	Name	String	Less than 12 Bytes
2	0x02	X	BER
3	0x03	Y	BER
5	0x05	Event Pages	Array2D

Event Pages

This structure contains the pages on an event on the map. The following table contains the substructure of how a single page is built.

		Content	DataType
2	0x02	Page Conditions	Array1D
21	0x15	CharSet Filename	String
22	0x16	Character/UpperTile	BER
23	0x17	FacingDirection	BER
24	0x18	CharacterStep	BER
25	0x19	TransparentFlag	Boolean
31	0x1F	MovementType	BER
32	0x20	MoveFrequency	BER
33	0x21	TriggerType	BER
34	0x22	Priority	BER
35	0x23	NoOverlapFlag	Boolean
36	0x24	AnimationType	BER
37	0x25	Speed	BER
41	0x29	Move Route	Array1D
51	0x33	DataSize	BER
52	0x34	Page Contents

Page Conditions

This structure contains the data of conditions that have to be fulfilled in order for the page to be active ingame. Pages are checked from highest ID to lowest, with the first perfect match possible being applied. While no page is matching, there will be no interaction or code-processing.

		Content	DataType	Details
1	0x01	TriggerBits	BER	1: Switch1, 2: Switch2, 4: Variable, 8: Item, 16: PartyActor, 32: Timer1, 64: Timer2 (2003)
2	0x02	Switch1ID	BER
3	0x03	Switch2ID	BER
4	0x04	VariableID	BER
5	0x05	VariableValue	BER
6	0x06	ItemID	BER
7	0x07	ActorID	BER
8	0x08	Timer1Value	BER	Total Seconds
9	0x09	Timer2Value	BER	(2003) Total Seconds
10	0x0A	VariableOperator	BER	(2003) 0: ==, 1: >=, 2: <=, 3: >, 4: < 5: !=

Move Route

This structure contains the data of an event-page's pre-defined move-route.

		Content	DataType	Details
11	0x0B	DataSize	BER
12	0x0C	CommandsList
21	0x15	RepeatFlag	Boolean	Repeat Route when End is reached
22	0x16	IgnoreFlag	Boolean	Ignore a step when it can't be done