CORRECTIONS

<Action*> {
	 0 4b Library ID
	 4 4b Action ID
	 8 4b Kind
	 C 4b Relative
	10 4b Question
	14 4b Applies to something
	18 4b Type
	1C 4b Offset to function name
	20 4b Offset to function code
	24 4b Arguments used
	28 4b Applies to object
	2C 4b Is relative
	30 4b Not?
	34 4b Arguments
	For Arguments {
		 0 4b Argument kind
		 4 4b Offset to argument string
	}

	 0 4b Unknown
	 4 4b Unknown
}

<EventEntry*> {
	 0 4b Count
	For Count {
		 0 4b Offset to EventNumb Entry
	}

	[ EventNumb Entry ]
	{
		 0 4b Event Number
		 0 4b Count
		For Count {
			 0 4b Offset to Action Entry
		}
	}
}

<OBJT> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to object entry
	}

	[ Object Entry ]
	{
		 0 4b Offset to object name
		 4 4b Sprite Index
		 8 4b Visible
		 C 4b Solid
		10 4b Depth
		14 4b Persistent
		18 4b Parent ObjectIndex
		1C 4b Mask SpriteIndex
		
		[ New Additions as of EA v1.99.44 ]
		20 4b Uses Physics
		24 4b Collision Shape [Enum] ? {
			0	Circle
			1	Box
			2	Shape
		}
		
		28 4b Unknown
		2C 4b Density (float)
		30 4b Restitution (float)
		34 4b Collision Group
		38 4b Linear Damping
		3C 4b Angular Damping
		40 4b Unknown (Sensor?)
		44 4b Friction
		48 4b Start Awake?
		4C 4b Kinematic?

		20 4b Numer of events (Const 12 as of EAv1.99.44)
		For 12 {
			 0 4b Offset to EventEntry
		}
	}	
}

<CODE> {
	[ Header ]
	 0 4b Count
	 For Count {
		 0 4b Offset to CodeEntry
	 }
	 
	[ CodeEntry ]
	<CodeEntry> {
		 0 4b Offset to script name (string)	[ Ex: gml_Object_Controller_Create_0 ]
		 0 4b Size { Bytecode }
	}
}

<FUNC> {

}

<VARI> {

}

<TXTR> {
	[ Header ]
	 0 4b Count
	 For Count {
		 0 4b Offset to Texture Sheet (PNG File)
		 4 ?b <Padding to align PNG file on 128 byte boundaries>
		 0 ?b Uncompressed Stream { <PNG File> }
	 }
}

FMT2

<Action*> {
	 0 4b Library ID
	 4 4b Action ID
	 8 4b Kind
	 C 4b Relative
	10 4b Question
	14 4b Applies to something
	18 4b Type
	1C 4b Offset to function name
	20 4b Offset to function code
	24 4b Arguments used
	28 4b Applies to object
	2C 4b Is relative
	30 4b Not?
	34 4b Arguments
	For Arguments {
		 0 4b Argument kind
		 4 4b Offset to argument string
	}

	 0 4b Unknown
	 4 4b Unknown
}

<EventEntry*> {
	 0 4b Count
	For Count {
		 0 4b Offset to EventNumb Entry
	}

	[ EventNumb Entry ]
	{
		 0 4b Event Number
		 0 4b Count
		For Count {
			 0 4b Offset to Action Entry
		}
	}
}

<OBJT> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to object entry
	}

	[ Object Entry ]
	{
		 0 4b Offset to object name
		 4 4b Sprite Index
		 8 4b Visible
		 C 4b Solid
		10 4b Depth
		14 4b Persistent
		18 4b Parent ObjectIndex
		1C 4b Mask SpriteIndex
		
		[ New Additions as of EA v1.99.44 ]
		20 4b Uses Physics
		24 4b Collision Shape [Enum] ? {
			0	Circle
			1	Box
			2	Shape
		}
		
		28 4b Unknown (Shape points?)
		2C 4b Density (float)
		30 4b Restitution (float)
		34 4b Collision Group
		38 4b Linear Damping
		3C 4b Angular Damping
		40 4b Unknown (Sensor?)
		44 4b Friction
		48 4b Start Awake?
		4C 4b Kinematic?

		20 4b Number of main events (Const 12 as of EAv1.99.44)
		For 12 {
			 0 4b Offset to EventEntry
		}
	}	
}

<CODE> {
	[ Header ]
	 0 4b Count
	 For Count {
		 0 4b Offset to CodeEntry
	 }
	 
	[ CodeEntry ]
	<CodeEntry> {
		 0 4b Offset to script name (string)	[ Ex: gml_Object_Controller_Create_0 ]
		 0 4b Size { Bytecode }
	}
}

<FUNC> {
	[ Header ]
	 0 4b Size [ Count will be Size / 12 (dec) ]

	[ FuncEntry ]
	<FuncEntry> {
			 0 4b Offset from the start of the file to the function name, eg. show_message
			 0 4b Patch Information?
			 0 4b Offset to instruction in code (beg), eg. parameter count
	}
}
 
<VARI> {
	[ Header ]
	 0 4b Size
	 
	[ VariEntry ]
	<VariEntry> {
			 0 4b Offset from the start of the file to the variable name
			 0 4b Patch Information?
			 0 4b Offset to instruction in code (beg)
	}
}

<TXTR> {
	[ Header ]
	 0 4b Count
	 For Count {
		 0 4b Offset to Texture Sheet (PNG File)
		 4 ?b <Padding to align PNG file on 128 byte boundaries>
		 0 ?b Uncompressed Stream { <PNG File> }
	 }
}

GM_FORMAT

iOS Format [GM9 Format?]
v1.1c
December 19th, 2010

This document loosely follows IsmAvatar's documenting style, mostly because it
worked really well for the EXE format. Since this magical runner YYG's working on
has been ported to PSP, iOS and Android it's most likely going to work its way
onto the PC and Mac, meaning that it's possible this is the format the C++ runner
will use on PC and Mac. The PC and Mac specific information also strongly supports
this theory.

Note that this format follows surprisingly close to the EXE format with some
global differences. This, in turn, means that this format is very
similar to the GMK format as well.

Comments will be inside brackets, [ ]
Likely, but not verified values will have a question mark, ?

GMK Format (>=v5.3a): http://www.google.com/lgm/formats/gmformat8.txt // ism
EXE Format (==v8.0 ): http://www.google.com/decompiler/EXEFormat.txt // dat

Note: Due to the limited number of games, and a lack of a compiler at the time
      of this document's compilation, information on every section is volatile,
      while other sections are completely unknown.

Note: As far as I know, Triggers do not exist in this format, not sure if that's
      done on purpose, because YYG forgot to add them, they're being depreciated or
      simply because I can't find them. Either way, they're not documented.

--- Sections ---
The format is split into 19 seperate sections, each section contains a specific type
of data and a specific format. All of these sections are children of the root
section, FORM. The FORM Tag ID is about as close as you're going to get to a magic number.

Sections use the following format:
 0 4b Tag ID
 4 4b Size of section
 8 ?b Payload

--- Tags ---
FORM [46 4F 52 4D]:	Root
GEN8 [47 45 4E 38]:	Generate ("Catch-All")
OPTN [4F 50 54 4E]:	Options
HELP [48 45 4C 50]:	Game Information
EXTN [45 58 54 4E]:	Extentions
SOND [53 4F 4E 44]:	Sounds
SPRT [53 50 52 54]:	Sprites
BGND [42 47 4E 44]:	Backgrounds
PATH [50 41 54 48]:	Paths
SCPT [53 43 50 54]:	Scripts
FONT [46 4F 4E 54]:	Fonts
TMLN [54 4D 4C 4E]:	Time Lines
OBJT [4F 42 4A 54]:	Objects
ROOM [52 4F 4F 4D]:	Rooms
DAFL [44 41 46 4C]:	Data Files
TPAG [54 50 41 47]:	Texture Packaging information
STRG [53 54 52 47]:	Strings
TXTR [54 58 54 52]:	Textures (1024x1024 sheets)
AUDO [41 55 44 4F]:	Audio

--- Main Format ---
<FORM> {
	 <GEN8, OPTN, HELP, EXTN, SOND, SPRT, BGND, PATH, SCPT, FONT, TMLN,
 	  OBJT, ROOM, DAFL, TPAG, STRG, TXTR, AUDO>
}

<End Of File>

--- Section Payload ---
<GEN8> {
	 0 4b Version
	 4 4b Offset to Game Center Unique ID
	 8 4b Last object placed
	 C 4b Last tile placed
	10 2b Unknown
	12 1b Pro flag?
	13 1b Debug flag?
	14 4b Game ID?
	18 16b UUID/GUID?
	34 4b Count
	For Count {
		 0 4b Room ID
	}
}

<OPTN> {
	 0 4b Start in fullscreen
	 4 4b Interpolate colors
	 8 4b Don't draw a border in windowed mode
	 C 4b Display cursor
	10 4b Scaling
	14 4b Allow player to resize window
	18 4b Window always on top
	1C 4b Color outside room
	20 4b Set resolution
	24 4b Color depth
	28 4b Resolution
	2C 4b Frequency
	30 4b Don't show buttons in windowed mode
	34 4b Use sync to avoid tearing
	38 4b Disable screensavers
	3C 4b Let F4 switch
	40 4b Let F1 show game info
	44 4b Let Esc end
	48 4b Let F5 and F6 save/load
	4C 4b Let F9 take a screenshot
	50 4b Treat close as esc
	54 4b Priority
	58 4b Freeze when form loses focus
	5C 4b Loading progress bar
	60 4b Show own image
	64 4b Make image partially transparent
	68 4b Make translusent
	6C 4b Size of icon data
	70 4b Display errors
	74 4b Write errors
	78 4b Abort on all error
	7C 4b Treat uninitialized variables as 0
	
	80 4b Count
	For Count {
		 0 4b Offset to constant name
		 4 4b Offset to constant value
	}
}

<HELP> {
	 0 4b BG Color
	 4 4b Show in seperate window
	 8 4b Offset to window caption ("Game Information")
	 C 4b Left
	10 4b Top
	14 4b Width
	18 4b Height
	1C 4b Show border
	20 4b Allow player to resize
	24 4b Stay on top
	28 4b Freeze game while help form is in focus
	2C 4b Offset to RTF game info
}

[ This section is completely unknown, this is what it may look like ]
<EXTN> {
	 0 4b Count
	For Count {
		 0 4b Offset to name
		 4 4b Offset to temp name
		 8 4b Count
		For Count {
			 0 4b Offset to filename
			 4 4b Type
			 8 4b Offset to initialization code
			 C 4b Offset to finalization code
			10 4b Count*
			For Count {
				 0 4b Offset to name
				 4 4b Offset to external name
				 8 4b CallType
				 C 4b Internal ID?
				10 4b ArgumentCount
				For ArgumentCount {
					 0 4b ArgumentKind
				}

				 0 4b ConstantCount
				For ConstantCount {
					 0 4b Offset to constant name
					 4 4b Offset to constant value
				}
			}
			
			For Count* {
				 0 4b LenOfData { <FileData> }
			}
		}
	}
}

<SOND> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to sound entry
	}

	[ Sound Entry ]
	{
		 0 4b Offset to sound name
		 4 4b Type
		 8 4b Offset to filename extention (".wav")
		 C 4b Offset to filename ("sound.wav")
		10 4b Effects
		14 8b Volume
		1C 8b Pan
		24 4b Preload
		28 4b AUDO Index
	}
}

<SPRT> {
	[ Header]
	 0 4b Count
	For Count {
		 0 4b Offset to sprite entry
	}
	
	[ Sprite Entry ]
	{
		 4 4b Offset to name
		 8 4b Width
		 C 4b Height
		10 4b Left bounding box
		14 4b Right bounding box
		18 4b Bottom bounding box
		1C 4b Top bounding box
		For 5 {
			 0 4b Unknown (Boolean) [ Alternates between 1 and 0, starts with 1 ]
		}

		 0 4b Origin-X
		 4 4b Origin-Y
		 8 4b Subimages
		For Subimages {
			 0 4b Offset to TPAG data
		}

		 0 4b Seperate collision mask
		For ceil(width / 8) * height {
			 0 1b Eight pixels of mask data
		}
	}
}

<BGND> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to background entry
	}

	[ Background Entry ]
	{
		 0 4b Offset to background name
		 4 2b Tile width
		 6 2b Tile height
		 8 2b Horz offset
		 A 2b Vert offset
		 C 2b Horz sep
		 E 2b Vert sep
		10 4b Offset to TPAG data
	}
}

<PATH> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to path entry
	}

	[ Path Entry ]
	{
		 0 4b Offset to path name
		 4 4b Connection type
		 8 4b Closed
		 C 4b Precision
		10 4b Count
		For Count {
			 0 4b X
			 8 4b Y
			10 4b Speed
		}
	}
}

<SCPT> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to script entry
	}

	[ Script Entry ]
	{
		 0 4b Offset to script name
		 4 4b Offset to script contents
	}
}

<FONT> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to font entry
	}

	[ Font Entry ]
	{
		 0 4b Offset to font name
		 4 4b Offset to font filename
		 8 4b Font size
		 C 4b Bold
		10 4b Italic
		14 4b Char range min
		18 4b Char range max
		1C 4b Offset to TPAG entry
	}
}

<Action*> {
	 0 4b Library ID
	 4 4b Action ID
	 8 4b Kind
	 C 4b Relative
	10 4b Question
	14 4b Applies to something
	18 4b Type
	1C 4b Offset to function name
	20 4b Offset to function code
	24 4b Arguments used
	28 4b Applies to object
	2C 4b Is relative
	30 4b Not?
	34 4b Arguments
	For Arguments {
		 0 4b Argument kind
		 4 4b Offset to argument string
	}

	 0 4b Unknown
	 4 4b Unknown
}

<EventEntry*> {
	 0 4b Count
	For Count {
		 0 4b Offset to EventNumb Entry
	}

	[ EventNumb Entry ]
	{
		 0 4b Event Number
		 0 4b Count
		For Count {
			 0 4b Offset to Action Entry
		}
	}
}

[ This section is completely unknown, this is what it may look like ]
<TMLN> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to time line entry
	}

	[ Time Line Entry ]
	{
		 0 4b Offset to time line name
		 4 4b MomentCount
		For MomentCount {
			 0 4b Offset to MomentData entry
		}
	}

	[ MomentData Entry ]
	{
		 0 4b Moment position
		 4 4b Offset to Action Entry
	}
}

<OBJT> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to object entry
	}

	[ Object Entry ]
	{
		 0 4b Offset to object name
		 4 4b Sprite Index
		 8 4b Visible
		 C 4b Solid
		10 4b Depth
		14 4b Persistent
		18 4b Parent ObjectIndex
		1C 4b Mask SpriteIndex
		20 4b Numer of events - 1
		For 12 {
			 0 4b Offset to EventEntry
		}
	}
	
}

<ROOM> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to room entry
	}

	[ Room Entry ]
	{
		 0 4b Offset to room name
		 4 4b Offset to room caption
		 8 4b Width
		 C 4b Height
		10 4b Room Speed
		14 4b Persistent
		18 4b BG Color
		1C 4b Draw BG color
		20 4b Offset to room creation code
		24 4b Enable use of views
		28 4b Offset to background data entry
		2C 4b Offset to view list entry
		30 4b Offset to instance list entry
		34 4b Offset to tile list entry
		
	}

	[ BackgroundList Entry ]
	{
		 0 4b Count
		For Count {
			 0 4b Offset to background entry
		}
	}

	[ Background Entry ]
	{
		 0 4b Visible when room starts
		 4 4b Foreground
		 8 4b Background Index
		 C 4b X
		10 4b Y
		14 4b Tile Horz
		18 4b Tile Vert
		1C 4b Stretch
	}

	[ ViewList Entry ]
	{
		 0 4b Count
		For {
		 	 0 4b Offset to view entry
		}
	}

	[ View Entry ]
	{
		 0 4b Visible when room starts
		 4 4b View X
		 8 4b View Y
		 C 4b View W
		10 4b View H
		14 4b Port X
		18 4b Port Y
		1C 4b Port W
		20 4b Port H
		24 4b Horz border
		28 4b Vert border
		2C 4b Horz speed
		30 4b Vert speed
		34 4b Follow ObjectIndex
	}

	[ InstanceList Entry ]
	{
		 0 4b Count
		For Count {
			 0 4b Offset to instance entry
		}
	}

	[ Instance Entry ]
	{
		 0 4b X
		 4 4b Y
		 8 4b ObjectIndex
		 C 4b ID
		10 4b Offset to creation code
	}

	[ TileList Entry ]
	{
		 0 4b Count
		For Count {
			 0 4b Offset to tile entry
		}
	}

	[ Tile Entry ]
	{
		 0 4b X
		 4 4b Y
		 8 4b BackgroundIndex
		 C 4b Tile Y
		 10 4b Tile X
		14 4b Width
		18 4b Height
		1C 4b Depth
		20 4b ID
	}
}

[ This section is completely unknown, this is what it may look like ]
<DAFL> {
	 0 4b Count
	For Count {
		 0 4b Offset to Include Entry
	}

	[ Include Entry ]
	{
		 0 4b Offset to filename
		 4 4b Offset to original filename
		 8 4b Original file chosen
		 C 4b Original file size
		10 4b Offset to File Data
		14 4b Export
		18 4b Offset to folder to export to
		1C 4b Overwrite
		20 4b Free memory
		24 4b Remove at end of game
	}
}

<TPAG> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b offset to texture package entry
	}

	[ TexturePackage Entry ]
	{
		 0 2b Sprite X on sheet
		 2 2b Sprite Y on sheet
		 4 2b Sprite width on sheet
		 6 2b Sprite height on sheet
		 8 2b Subframe X
		 A 2b Subframe Y
		 C 2b Subframe Width
		 E 2b Subframe Height
		10 2b Canvas width
		12 2b Canvas height
		14 2b Texture ID
	}
}

[ Every string is null terminated ]
<STRG> {
	 0 4b Count
	For Count {
		 0 4b Offset to string
	}

	[ String ]
	{
		 0 4b Length
		 0 ?b Value
	}
}

<TXTR> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to texture entry
	}

	[ Texture Entry, image is in RAW format ]
	{
		 0 4b RAW Magic
		 4 4b Width
		 8 4b Height
		 C 4b Pixel Format [ RGBA, 0 = 32bit, 1 = 24bit (8888 format) ]
		For Width * Height {
			 0 4b Pixel
		}
	}
}

[ This is for *.wav and *.mid files only, *.mp3s are stored externally with the game data ]
<AUDO> {
	[ Header ]
	 0 4b Count
	For Count {
		 0 4b Offset to audio entry
	}

	[ Audio Entry ]
	{
		 0 4b Length
		For Length {
			 0 1b Audio Data, RIFF format
		}
	}
}