Other Games

Myst and Riven aren't the only games to use the Mohawk format. In fact, many Broderbund based games use it. Here is a (partial) list of games known to use it:

• Green Eggs and Ham
• James Discovers Math
• James Explores Math
• Logical Journey of the Zoombinis (aka Zoombinis Logical Journey)
• Maggie's Barnyard Adventure
• The Treehouse
• Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure)
• Where in the World is Carmen Sandiego? (Windows/Mac version)

Video

All the videos of the original games are QuickTime movies. The later Zoombinis release has Bink videos instead.

The audio codec is raw, signed, 16-bit data in Big Endian format. The video codec, however, is not standard. It has the FourCC 'QkBk' and has description "CDToons". Neither QuickTime nor mplayer/ffmpeg can play this codec and its format is unknown. Some videos still use Cinepak (like "The Chief" videos in Carmen Sandiego).

Game Specific Information

James Discovers/Explores Math

Resources

tANM

Animation?

Logical Journey of the Zoombinis

Resources

\0SND

These are Mohawk Sounds. Note that they begin with a NULL character.

CURS

Cursor?

SYSX

This appears to be a list of Adlib MIDI commands. There are only two resources in the game (which are found in MIDIMAP.DAT) and are 1 or 0xFFFF. They are identical.

Maggie's Barnyard Adventure

Resources

tCUR

Cursor?

Common Resources

tBMP

Game bitmaps. However, they are not the same as Riven tBMP's! Here's what I figured out so far:

(Big Endian Order)

unsigned long	u0
unsigned long	u1
unsigned long	u2
unsigned long	data_size
unsigned short	buffer_size

Following this is data_size bytes. u0 and u1 are normally close. u2 and data_size are normally close. Following this seems to be LZSS compressed data using a buffer size of buffer_size, perhaps similar to the encoding in Myst WDIB resources.

This is the same in all non-Riven (and non-Myst) games.

tWAV

This is a Mohawk Sounds resource. (Found in all but Logical Journey of the Zoombinis)

tPAL

This appears to be a palette. Here's what I've worked out so far. I believe this may be tied together with tBMH.

(Big Endian Order)

unsigned short	u0
unsigned short	color_count

Following that is color_count RGBA quads.

This is found in Where in the World is Carmen Sandiego?, Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure), Green Eggs and Ham, and The Treehouse.

tCNT

Unknown. The data size is always 4 and follows this format:

(Big Endian Order)

unsigned short	resource_id
unsigned short	u0

resource_id appears to always equal the tCNT that this belongs to.

This is found in Where in the World is Carmen Sandiego?, Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure), James Discovers Math, Green Eggs and Ham, and James Explores Math.

tSCR

Unknown.

This is found in Where in the World is Carmen Sandiego?, Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure), Green Eggs and Ham, and The Treehouse.

STRL

This is a string list.

byte	string_count

Following that is string_count NULL-terminated strings. This seems reminiscent of Riven's NAME resources.

This is found in Logical Journey of the Zoombinis, Where in the World is Carmen Sandiego?, and Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure).

tBMH

This appears to be identical to the tBMP resources found in these games. I believe this may be tied together with tPAL. I also think this may be sprites. The characters in Carmen Sandiego use different palettes on the same sprites to make the look of the person appear different. For example, the palette could change to change hair color, skin color, and clothing.

This is found in Where in the World is Carmen Sandiego?, Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure), Green Eggs and Ham, and The Treehouse.

tMID

This is a Mohawk MIDI resource.

This is found in Logical Journey of the Zoombinis, James Discovers Math, James Explores Math, and The Treehouse.

REGS

Unknown.

This is found in Logical Journey of the Zoombinis, Green Eggs and Ham, and The Treehouse.

BYTS

This appears to be able to hold multiple things. In DATABASE.MHK, it holds database entries (one large null-terminated string), but elsewhere it appears to be something else.

This is found in Where in the World is Carmen Sandiego? and Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure).

INTS

Unknown.

This is found in Where in the World is Carmen Sandiego? and Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure).

BBOX

Some sort of boxes? It follows this format:

(Big Endian Order)

byte	rect_count

And then, it has rect_count rects:

unsigned short	left
unsigned short	top
unsigned short	right
unsigned short	bottom

This is found in Where in the World is Carmen Sandiego? and Where in America is Carmen Sandiego? (The Great Amtrak Train Adventure).

ANI

Animation? (Note: Ends in a space character)

This is found in Maggie's Barnyard Adventure and Green Eggs and Ham.

BITL

This is found in Maggie's Barnyard Adventure and Green Eggs and Ham.

SCRP

This is found in Maggie's Barnyard Adventure and Green Eggs and Ham.

SPR#

Sprites? This is found in Maggie's Barnyard Adventure and Green Eggs and Ham.

VRSN

Version? This is found in Maggie's Barnyard Adventure and Green Eggs and Ham.

SHP#

This is found in Maggie's Barnyard Adventure and Green Eggs and Ham.