GOOL Executable

A GOOL Executable is a type of entry that describes the behavior or application of a particular type of game object. GOOL executables contain a header, executable compiled [GOOL] bytecode, a constant pool, a mapping of subtypes to [initial] states, a mapping of events to states/interrupts, state descriptors, and animation sequence, text, and sprite descriptors. They are Type 11 entries.

Format

Item 1: Header

Item 1: Header

Offset	Field	Size	Value
0x0	Object Type	4 bytes
0x4	Object Category	4 bytes
0x8	unknown	4 bytes
0xC	Initial Stack Frame Offset	4 bytes
0x10	Subtype->State Map Index	4 bytes	s
0x14	unknown	4 bytes

Item 2: Executable Bytecode

Item 2: Executable Bytecode

Offset	Field	Size	Value
0x0	Code	* x 4 bytes	*

Item 3: Constant Data Pool

Item 3: Constant Data Pool

Offset	Field	Size	Value
0x0	Data	* x 4 bytes	*

Item 4: State Map

Item 4: State Map

Offset	Field	Size	Value
0x0	Event->State/Interrupt Map	s x 2 bytes	*
0x0 + (2 x s)	Subtype->State Map	* x 2 bytes	*

*0xFF is a null state

Item 5: State Descriptors/Definitions

Item 5: State Descriptors/Definitions

Offset	Field	Size	Value
0x0	State Descriptors	* x 16 bytes	*
(format of state descriptor d)
(d x 16) + 0x0	State Flags	4 bytes	*
(d x 16) + 0x4	Object Status C Flags	4 bytes	*
(d x 16) + 0x8	External Executable EID (*index in const pool)	2 bytes	*
(d x 16) + 0xA	Event Block Program Counter Offset	2 bytes	*
(d x 16) + 0xC	Trans Block Program Counter Offset	2 bytes	*
(d x 16) + 0xE	Code Block Program Counter Offset	2 bytes	*

Item 6: Animation Descriptors

Item 6: Animation Descriptors

Offset	Field	Size	Value
0x0	Animation Descriptors	* x * bytes

Animation descriptors are stored contiguously, occupying the 6th item of the GOOL executable entry. Each type of animation descriptor has a different structure; the size of an animation descriptor is entirely dependent upon its type.

Type 1 - Vertex Animation

Type 1 animation descriptors simply specify an SVTX entry that contains their representative vertex animation. This is the most frequently used type.

Animation Descriptor Type 1 format

Offset	Field	Size	Value
0x0	Type	1 byte	1
0x1	Unused	1 byte	*
0x2	Frame Count	1 byte	c
0x3	Unused	1 byte	*
0x4	SVTX Model EID	4 bytes	*

Type 2 - Sprite Animation

Type 2 descriptors specify a separate square for each frame of animation, each square to be transformed and rendered as a blended textured quad. Square dimensions are not specified in the descriptor but are calculated from the instanced object's scale vector.

Animation Descriptor Type 2 format

Offset	Field	Size	Value
0x0	Type	1 byte	2
0x1	Unused	1 byte	*
0x2	Frame Count	1 byte	c
0x3	Unused	1 byte	*
0x4	Texture Page EID	4 bytes	*
0x8	CLUT/Texture info	c x 2 x 4 bytes

Type 3 - Font Map

Type 3 descriptors associate with each ascii character, in lexicographic order, a separate region (location/dimensions determined by texture and color info) of a specified Texture Page. Also specified for each region are the dimensions of a textured blended quad to be rendered, with that [region of the texture page as its] texture. Type 4 descriptors, which specify a string of text, will reference a type 3 descriptor. As characters in the type 4 descriptor string are stepped through, the referenced type 3 descriptor will determine the corresponding quads to be rendered. The Type 3 descriptor may additionally specify a separate region of the texture page as [the texture for] a text backdrop [quad].

Animation Descriptor Type 3 format

Offset	Field	Size	Value
0x0	Type	1 byte	2
0x1	Unused	1 byte	*
0x2	Font Map Length	1 byte	c
0x3	Unused	1 byte	*
0x4	Texture Page EID	4 bytes	*
0x8	Font Map	c x 12 bytes	*
(font mapping structure d)
0x8 + (d x 12) + 0x0	CLUT info	4 bytes	*
0x8 + (d x 12) + 0x4	Texture info	4 bytes	*
0x8 + (d x 12) + 0x8	Character Width	2 bytes	*
0x8 + (d x 12) + 0xA	Character Height	2 bytes	*
(end)
0x8 + (c x 12) + 0x0	Backdrop CLUT info	4 bytes	*
0x8 + (c x 12) + 0x4	Backdrop Texture info	4 bytes	*

Type 4 - Text Animation

Type 4 descriptors specify a separate string of text for each frame of animation. They also specify the offset of a source font map (Type 3 descriptor) to use to render that text.

Animation Descriptor Type 4 format

Offset	Field	Size	Value
0x0	Type	1 byte	4
0x1	Unused	1 byte	*
0x2	String/Frame Count	1 byte	c
0x3	Unused	1 byte	*
0x4	Unknown	4 bytes	*
0x8	Font Map Offset	4 bytes	*
0xC	Strings	c x * bytes	*

Each string ends with a null terminator character (\0) and can have up to 4 individual format specifiers (beginning with %); they are processed with a call to printf, with 4 corresponding arguments the 2nd, 3rd, 4th, and 5th words, respectively, before (or below) the top of the instanced object's stack.

These strings can also contain several types of extended format specifiers. These begin with a tilde '~' and can be specified as one of the following:

Specifier	Output/Function
~n	Newline
~%	Newline
~c0	Disable shading (inst. obj's. color matrices will not affect proceeding chars)
~c1	Enable shading (inst. obj's. color matrices will affect proceeding chars)
~p#	Skips the following character if the value at (2 + #) count words before/below the top of the instanced objects stack is 1. Used to auto change from singular to plural forms of the noun(s) introduced by the corresponding cardinal determiner (i.e. 1 'box' to n 'boxes' for n != 1)
~sx####	Set width of following character to # (min 1, max 4 digits)
~sy####	Set height of following character to # (min 1, max 4 digits)

* if the instanced object has bit 11 of its statusb flags set, rendering of the text will include a backdrop that spans the area occupied by the text.

Type 5 - Fragment Animation

Type 5 descriptors specify a number of rectangles that compose a miniature model for each frame of animation. These are to be transformed and rendered as multiple blended textured quads.

This type is typically used for smaller objects such as fragments of exploding TNT and sparkling specks spawned by Aku Aku and by Warp Panels.

Animation Descriptor Type 5 format

Offset	Field	Size	Value
0x0	Type	1 byte	5
0x1	Unused	1 byte	*
0x2	Frame Count	1 byte	c
0x3	Unused	1 byte	*
0x4	Texture Page EID	4 bytes	*
0x8	Rectangle Count	4 bytes	r
0xC	Rectangles	c x r x 16 bytes	*
(Rectangle structure d, frame f)
0xC + (d x f x 16) + 0x0	CLUT info	4 bytes	*
0xC + (d x f x 16) + 0x4	Texture info	4 bytes	*
0xC + (d x f x 16) + 0x8	X1	2 bytes	*
0xC + (d x f x 16) + 0xA	Y1	2 bytes	*
0xC + (d x f x 16) + 0xC	X2	2 bytes	*
0xC + (d x f x 16) + 0xE	Y2	2 bytes	*