Chip's Challenge Wiki

C2M: Difference between revisions

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C2M (edit)

Revision as of 14:55, 15 May 2021

2,053 bytes added ,  15 May 2021
→‎REPL / PRPL section: Make C2M solution input delay documentation clearer
imported>Zrax0111
(Update tile and modifier specifications based on testing.)
 
(→‎REPL / PRPL section: Make C2M solution input delay documentation clearer)
 
(15 intermediate revisions by 7 users not shown)
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=== Overview ===
A '''C2M '''file (having the extension .c2m) is the file format which [[Chip's Challenge 2]] individual levels are stored in.
A '''C2M '''file (having the extension .c2m) is the file format which [[Chip's Challenge 2]] individual levels are commonly stored in.


The file is a binary file consisting of several sections one after the other, terminated by the END section. Each section begins with a section header, which is followed by the section's data.
The file is a binary file consisting of several sections one after the other, terminated by the END section. Each section begins with a section header, which is followed by the section's data.
Line 6: Line 5:
All data in the file is little-endian.
All data in the file is little-endian.


=== Section header format ===
== Format ==
{| class="article-table"
=== Section header ===
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
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=== Section types ===
=== Section types ===
{| class="article-table"
{| class="wikitable" border="1"
!Section ID
!Section ID
!Content Type
!Content Type
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|LOCK
|LOCK
|Null-terminated string
|Null-terminated string
|Usually "Custom version for Chuck Sommerville", optional. Seems to be ignored by CC2.
|Usually "Custom version for Chuck Sommerville", optional. Seems to be ignored
|-
|-
|TITL
|TITL
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|CLUE
|CLUE
|Null-terminated string
|Null-terminated string
|Level clue (Only one allowed, but see <ref name=":0">The NOTE section can contain multiple clues separated by "[CLUE]" line. The clues are assigned to the clue tiles in order of appearance of both.</ref>)
|Level clue (Only one allowed, but see below <ref name=":0">The NOTE section can contain multiple clues separated by a "[CLUE]" line. The clues are assigned to the clue tiles in reading order.</ref>)
|-
|-
|NOTE
|NOTE
Line 62: Line 62:
|KEY
|KEY
|16 bytes
|16 bytes
|Unknown, seems not required, could be a MD5 hash of something
|Unknown, seems not required <!--could be a MD5 hash of something-->
|-
|-
|REPL / PRPL
|REPL / PRPL
|See REPL section table below
|See REPL section table below
|Solution replay, optional. A REPL section is not packed, a PRPL section is.
|Solution replay, optional. A REPL section is not packed; a PRPL section is.
|-
|-
|RDNY
|RDNY
|No content (length is 0)
|No content ''(length is 0)''
|The presence of this section makes the level readonly so it can't be edited in the level editor.
|The presence of this section makes the level read-only so it can't be edited in the level editor.
|-
|-
|END
|END
|No content (length is 0)
|No content ''(length is 0)''
|Signifies end of file
|Signifies end of file
|}
|}
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=== OPTN section ===
=== OPTN section ===
The size of the section can differ between file versions (and even between files with the same file version). Data beyond the size of the section is not read. (E.g. if the section size is 3, only the time and the view are stored.)
The size of the section can differ between file versions (and even between files with the same file version). Data beyond the size of the section is not read. (E.g. if the section size is 3, only the time and the view are stored.)
{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
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The PACK and PRPL sections contain compressed versions of the MAP and REPL sections respectively. The compression scheme is as follows:
The PACK and PRPL sections contain compressed versions of the MAP and REPL sections respectively. The compression scheme is as follows:


{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
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|}
|}


==== A Data Block: ====
==== Data block ====
When encountered during decompression, the data block's N bytes of data are added to the list..
When encountered during decompression, the data block's N bytes of data are added to the list..
{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
Line 139: Line 139:
|}
|}


==== A Back-Reference Block: ====
==== Back-reference block ====
When encountered during decompression, COUNT bytes are copied from position (CURRENT - OFFSET) in the list to position CURRENT in the list. (Where CURRENT is the current position in the list, while COUNT and OFFSET are defined below)
When encountered during decompression, COUNT bytes are copied from position (CURRENT - OFFSET) in the list to position CURRENT in the list. (Where CURRENT is the current position in the list, while COUNT and OFFSET are defined below)


Note that COUNT can be larger than OFFSET, allowing arbitrary pattern repetition to be efficiently encoded.
Note that COUNT can be larger than OFFSET, allowing arbitrary pattern repetition to be efficiently encoded.
{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
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=== MAP / PACK section ===
=== MAP / PACK section ===
This section contains the map data. If this is a PACK section, it must be unpacked using the above compression scheme first. The contents of this section is as follows:
This section contains the map data. If this is a PACK section, it must be unpacked using the above compression scheme first. The contents of this section is as follows:
{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
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|}
|}


==== Tile specification: ====
==== Tile specification ====
The tile specification consists of 1 or more bytes. The first byte is always the tile value, decoded as follows:
The tile specification consists of 1 or more bytes. The first byte is always the tile value, decoded as follows:
{| class="article-table"
{| class="wikitable" border="1"
!Value
!Value
!Tile
!Tile
!Additional data, if any
!Additional data, if any
!Modifier
|-
|-
|0x1
|0x1
|Floor
|[[Floor]]
|
|
| Wires
|-
|-
|0x2
|0x2
|Wall
|[[Wall]]
|
|
|
|-
|-
|0x3
|0x3
|Ice
|[[Ice]]
|
|
|
|-
|-
|0x4
|0x4
|Ice, South West Corner
|[[Ice]] corner ''(SW)''
|
|
|
|-
|-
|0x5
|0x5
|Ice, North West Corner
|[[Ice]] corner ''(NW)''
|
|
|
|-
|-
|0x6
|0x6
|Ice, North East Corner
|[[Ice]] corner ''(NE)''
|
|
|
|-
|-
|0x7
|0x7
|Ice, South East Corner
|[[Ice]] corner ''(SE)''
|
|
|
|-
|-
|0x8
|0x8
|Water
|[[Water]]
|
|
|
|-
|-
|0x9
|0x9
|Fire
|[[Fire]]
|
|
|
|-
|-
|0xa
|0xa
|Force Floor, North
|[[Force floor]] ''(N)''
|
|
|
|-
|-
|0xb
|0xb
|Force Floor, East
|[[Force floor]] ''(E)''
|
|
|
|-
|-
|0xc
|0xc
|Force Floor, South
|[[Force floor]] ''(S)''
|
|
|
|-
|-
|0xd
|0xd
|Force Floor, West
|[[Force floor]] ''(W)''
|
|
|
|-
|-
|0xe
|0xe
|Green Toggle Wall
|Green [[toggle wall]]
|
|
|
|-
|-
|0xf
|0xf
|Green Toggle Floor
|Green [[Toggle wall|toggle floor]]
|
|
|
|-
|-
|0x10
|0x10
|Red Teleport
|[[Red teleport]]
|
|
| Wires
|-
|-
|0x11
|0x11
|Blue Teleport
|[[Blue teleport]]
|
|
| Wires
|-
|-
|0x12
|0x12
|Yellow Teleport
|[[Yellow teleport]]
|
|
|
|-
|-
|0x13
|0x13
|Green Teleport
|[[Green teleport]]
|
|
|
|-
|-
|0x14
|0x14
|Exit
|[[Exit]]
|
|
|
|-
|-
|0x15
|0x15
|Slime (the obstacle)
|[[Slime]]
|
|
|
|-
|-
|0x16
|0x16
|Chip (the hero)
|[[Chip]] ''(the hero)''
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x17
|0x17
|Dirt Block
|[[Dirt block]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x18
|0x18
|Walker Enemy
|[[Walker]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x19
|0x19
|Ship Enemy
|[[Glider|Ship]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x1a
|0x1a
|Ice Block
|[[Ice block]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x1b
|0x1b
|(Unused) East Panel
|[[Thin wall]] ''(S) (used in CC1 levels)''
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x1c
|0x1c
|(Unused) South Panel
|[[Thin wall]] ''(E) (used in CC1 levels)''
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x1d
|0x1d
|(Unused) South+East Panel
|[[Thin wall]] ''(SE) (used in CC1 levels)''
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x1e
|0x1e
|Gravel
|[[Gravel]]
|
|
|
|-
|-
|0x1f
|0x1f
|Door Toggle Button
|[[Green button]]
|
|
|
|-
|-
|0x20
|0x20
|Blue Tank Button
|[[Blue button]]
|
|
|
|-
|-
|0x21
|0x21
|Blue Tank
|[[Tank|Blue tank]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x22
|0x22
|Red Door
|[[Red door]]
|
|
|
|-
|-
|0x23
|0x23
|Blue Door
|[[Blue door]]
|
|
|
|-
|-
|0x24
|0x24
|Yellow Door
|[[Yellow door]]
|
|
|
|-
|-
|0x25
|0x25
|Green Door
|[[Green door]]
|
|
|
|-
|-
|0x26
|0x26
|Red Key
|[[Red key]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x27
|0x27
|Blue Key
|[[Blue key]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x28
|0x28
|Yellow Key
|[[Yellow key]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x29
|0x29
|Green Key
|[[Green key]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x2a
|0x2a
|IC Chip
|[[Computer chip|IC Chip]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x2b
|0x2b
|Extra IC Chip
|Extra [[Computer chip|IC Chip]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x2c
|0x2c
|IC Chip Socket
|[[Socket|Chip socket]]
|
|
|
|-
|-
|0x2d
|0x2d
|Push-up Wall
|[[Recessed wall|Pop-up wall]]
|
|
|
|-
|-
|0x2e
|0x2e
|Appearing Wall
|[[Appearing wall]]
|
|
|
|-
|-
|0x2f
|0x2f
|Invisible Wall
|[[Invisible wall]]
|
|
|
|-
|-
|0x30
|0x30
|Solid Blue Wall
|Solid [[blue wall]]
|
|
|
|-
|-
|0x31
|0x31
|False Blue Wall
|False [[blue wall]]
|
|
|
|-
|-
|0x32
|0x32
|Dirt
|[[Dirt]]
|
|
|
|-
|-
|0x33
|0x33
|Ant
|[[Bug|Ant]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x34
|0x34
|Centipede
|[[Paramecium|Centipede]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x35
|0x35
|Purple Ball
|[[Ball|Purple ball]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x36
|0x36
|Blob
|[[Blob]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x37
|0x37
|Red Teeth
|[[Teeth|Angry teeth]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x38
|0x38
|Fire box
|[[Fireball|Fire box]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x39
|0x39
|Clone Button
|[[Red button]]
|
|
|
|-
|-
|0x3a
|0x3a
|Trap Button
|[[Brown button]]
|
|
|
|-
|-
|0x3b
|0x3b
|Cleats
|[[Ice skates|Cleats]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x3c
|0x3c
|Magno Shoes
|[[Suction boots]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x3d
|0x3d
|Fire Shoes
|[[Fire boots]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x3e
|0x3e
|Flippers
|[[Flippers]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x3f
|0x3f
|Red Thief
|Tool [[thief]]
|
|
|
|-
|-
|0x40
|0x40
|Red Bomb
|[[Bomb|Cherry bomb]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x41
|0x41
|(Unused)
|Open [[trap]] ''(unused in main levels)''
|
|
|
|-
|-
|0x42
|0x42
|Trap
|[[Trap]]
|
|
|
|-
|-
|0x43
|0x43
|(Unused -- Behaves like Clone Machine)
|[[Clone machine]] ''(used in CC1 levels)''
|
|
| Clone direction (?)
|-
|-
|0x44
|0x44
|Clone Machine (Modifier required, see below)
|[[Clone machine]]
|
|
| Clone direction
|-
|-
|0x45
|0x45
|Clue Tile
|[[Hint|Clue]]
|
|
|
|-
|-
|0x46
|0x46
|Force Field, Random
|[[Force floor]] ''(random)''
|
|
|
|-
|-
|0x47
|0x47
|Area Control Button
|[[Gray button]]
|
|
|
|-
|-
|0x48
|0x48
|Revolving Door, South West
|[[Swivel door]] ''(SW)''
|
|
|
|-
|-
|0x49
|0x49
|Revolving Door, North West
|[[Swivel door]] ''(NW)''
|
|
|
|-
|-
|0x4a
|0x4a
|Revolving Door, North East
|[[Swivel door]] ''(NE)''
|
|
|
|-
|-
|0x4b
|0x4b
|Revolving Door, South East
|[[Swivel door]] ''(SE)''
|
|
|
|-
|-
|0x4c
|0x4c
|Time Bonus
|[[Time bonus]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x4d
|0x4d
|Time Toggle
|[[Stopwatch]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x4e
|0x4e
|Transformer
|[[Transmogrifier]]
|
|
| Wires
|-
|-
|0x4f
|0x4f
|Train Tracks Base (Modifier required, see section below)
|[[Railroad track]]
|
|
| Tracks (see below)
|-
|-
|0x50
|0x50
|Metal Wall
|[[Steel wall]]
|
|
| Wires
|-
|-
|0x51
|0x51
|Time Bomb
|[[Time bomb]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x52
|0x52
|Helmet
|[[Helmet]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x53
|0x53
|(Unused)
|''(Unused)''
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x54
|0x54
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x55
|0x55
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x56
|0x56
|Melinda
|[[Melinda]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x57
|0x57
|Blue Teeth
|[[Teeth|Timid teeth]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x58
|0x58
|(Unused) Explosion Animation
|Explosion animation ''(unused in main levels)''
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x59
|0x59
|Hiking Shoes
|[[Hiking boots]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x5a
|0x5a
|Male Only Sign
|[[Gender-only sign|Male-only sign]]
|
|
|
|-
|-
|0x5b
|0x5b
|Female Only Sign
|[[Gender-only sign|Female-only sign]]
|
|
|
|-
|-
|0x5c
|0x5c
|Inverter Gate, North (Modifier allows other gates, see below)
|[[Wire#Gates|Logic gate]]
|
|
|Gate type and direction (see below)
|-
|-
|0x5d
|0x5d
|(Unused)
|''(Unused)''
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x5e
|0x5e
|Logic Switch, On
|[[Pink button]]
|
|
|Wires
|-
|-
|0x5f
|0x5f
|Flame Jet, Off
|[[Flame jet]] ''(OFF)''
|
|
|
|-
|-
|0x60
|0x60
|Flame Jet, On
|[[Flame jet]] ''(ON)''
|
|
|
|-
|-
|0x61
|0x61
|Flame Jet Button
|[[Orange button]]
|
|
|
|-
|-
|0x62
|0x62
|Lightning Bolt
|[[Lightning bolt]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x63
|0x63
|Yellow Tank
|[[Yellow tank]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x64
|0x64
|Yellow Tank D-Pad
|[[Yellow tank button]]
|
|
|
|-
|-
|0x65
|0x65
|Mirror Chip (the enemy)
|[[Mirror Chip]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x66
|0x66
|Mirror Melinda
|[[Mirror Melinda]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x67
|0x67
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x68
|0x68
|Bowling Ball
|[[Bowling ball]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x69
|0x69
|Rover
|[[Rover]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x6a
|0x6a
|Time Penalty
|[[Time penalty]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x6b
|0x6b
|Custom Floor, Brown (Modifier allows other styles, see below)
|[[Custom tile|Custom floor]]
|
|
|Style (see below)
|-
|-
|0x6c
|0x6c
|(Unused)
|(Unused)
|
|
|
|-
|-
|0x6d
|0x6d
|Panels/Canopy, see below
|[[Thin wall]] / [[Canopy]]
|Panel/Canopy bitmask, Tile Specification for tile underneath
|Panel/Canopy bitmask ''(see below)'', Tile Specification for lower layer
|
|-
|-
|0x6e
|0x6e
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x6f
|0x6f
|Railroad Crossing Sign
|[[Railroad sign]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x70
|0x70
|Custom Wall, Brown (Modifier allows other styles, see below)
|[[Custom tile|Custom wall]]
|
|
|Style (see below)
|-
|-
|0x71
|0x71
|"Sunken" Floor (Modifier required, see below)
|[[Letter tile]] ''(space)''
|
|
|Glyph type (see below)
|-
|-
|0x72
|0x72
|Purple Toggle Wall
|[[Switch door|Purple toggle floor]]
|
|
|
|-
|-
|0x73
|0x73
|Purple Toggle Floor
|[[Switch door|Purple toggle wall]]
|
|
|
|-
|-
|0x74
|0x74
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x75
|0x75
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x76
|0x76
|8-bit Modifier (see Modifier section below)
|8-bit Modifier ''(see Modifier section below)''
|1 modifier byte, Tile Specification for affected tile
|1 modifier byte, Tile Specification for affected tile
|N/A
|-
|-
|0x77
|0x77
|16-bit Modifier (see Modifier section below)
|16-bit Modifier ''(see Modifier section below)''
|2 modifier bytes, Tile Specification for affected tile
|2 modifier bytes, Tile Specification for affected tile
|N/A
|-
|-
|0x78
|0x78
|32-bit Modifier (see Modifier section below)
|32-bit Modifier ''(see Modifier section below)''
|4 modifier bytes, Tile Specification for affected tile
|4 modifier bytes, Tile Specification for affected tile
|N/A
|-
|-
|0x79
|0x79
|(Unused)
|''(Unused)''
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x7a
|0x7a
|10 Point Flag
|10 point [[Bonus flag|flag]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x7b
|0x7b
|100 Point Flag
|100 point [[Bonus flag|flag]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x7c
|0x7c
|1000 Point Flag
|1000 point [[Bonus flag|flag]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x7d
|0x7d
|Stay Up Green Wall
|Solid [[green wall]]
|
|
|
|-
|-
|0x7e
|0x7e
|Pop Down Green Wall
|False [[green wall]]
|
|
|
|-
|-
|0x7f
|0x7f
|"Forbidden" mark (modifies items/keys)
|[[No sign|Not allowed marker]]
|Tile Specification for tile underneath
|Modifies tools/keys. Tile Specification for lower layer
|
|-
|-
|0x80
|0x80
|2x Points Flag
|2x points [[Bonus flag|flag]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x81
|0x81
|Directional Block
|[[Directional block]]
|Direction byte, Directional Arrows Bitmask, Tile Specification for tile underneath
|Direction byte, Directional Arrows Bitmask, Tile Specification for lower layer
|
|-
|-
|0x82
|0x82
|Floor Mimic
|[[Floor mimic]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x83
|0x83
|Green Bomb
|[[Green bomb]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x84
|0x84
|Green IC Chip
|[[Green chip]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x85
|0x85
|(Unused)
|''(Unused)''
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x86
|0x86
|(Unused)
|''(Unused)''
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x87
|0x87
|Reverse Logic Button
|[[Black button]]
|
|
|Wires
|-
|-
|0x88
|0x88
|Off Switch, Off
|[[Switch|ON/OFF switch]] ''(OFF)''
|
|
|Wires
|-
|-
|0x89
|0x89
|On Switch, On
|[[Switch|ON/OFF switch]] ''(ON)''
|
|
|Wires
|-
|-
|0x8a
|0x8a
|Red Thief
|[[Key thief]]
|
|
|
|-
|-
|0x8b
|0x8b
|Ghost
|[[Ghost]]
|Direction byte, Tile Specification for tile underneath
|Direction byte, Tile Specification for lower layer
|
|-
|-
|0x8c
|0x8c
|Steel Foil
|[[Steel foil]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x8d
|0x8d
|Turtle
|[[Turtle]]
|
|
|
|-
|-
|0x8e
|0x8e
|Eye
|[[Secret eye]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x8f
|0x8f
|Bribe
|[[Bribe|Thief bribe]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x90
|0x90
|Speed Shoes
|[[Speed boots]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|-
|-
|0x91
|0x91
|(Unused)
|''(Unused)''
|
|
|
|-
|-
|0x92
|0x92
|Hook
|[[Hook]]
|Tile Specification for tile underneath
|Tile Specification for lower layer
|
|}
|}


==== Direction Byte ====
==== Direction byte ====
The direction byte comes after enemy tiles and some others:
The direction byte comes after enemy tiles and some others:
{| class="article-table"
{| class="wikitable" border="1"
!Value
!Value
!Meaning
!Meaning
Line 781: Line 928:
|}
|}


==== Panel/Canopy Bitmask ====
==== Thin wall/Canopy bitmask ====
Any number of these bits can be combined:
Any number of these bits can be combined:
{| class="article-table"
{| class="wikitable" border="1"
!Bitmask
!Bitmask
!Meaning
!Meaning
|-
|-
|0x1
|0x1
|Panel, North
|[[Thin wall]] ''(N)''
|-
|-
|0x2
|0x2
|Panel, East
|[[Thin wall]] ''(E)''
|-
|-
|0x4
|0x4
|Panel, South
|[[Thin wall]] ''(S)''
|-
|-
|0x8
|0x8
|Panel, West
|[[Thin wall]] ''(W)''
|-
|-
|0x10
|0x10
|Canopy
|[[Canopy]]
|}
|}


==== Directional Arrows Bitmask ====
==== Directional block arrows bitmask ====
Any number of these bits can be combined:
Any number of these bits can be combined:
{| class="article-table"
{| class="wikitable" border="1"
!Bitmask
!Bitmask
!Meaning
!Meaning
|-
|-
|0x1
|0x1
|Arrow, North
|North
|-
|-
|0x2
|0x2
|Arrow, East
|East
|-
|-
|0x4
|0x4
|Arrow, South
|South
|-
|-
|0x8
|0x8
|Arrow, West
|West
|}
|}


==== Tile Modifiers ====
==== Tile modifiers ====
The modifier "tiles" (0x76, 0x77, 0x78) affect the tile specification that they carry in their additional data. The meaning of the modifier value depends on the type of tile they affect.
The modifier "tiles" (0x76, 0x77, 0x78) affect the tile specification that they carry in their additional data. The meaning of the modifier value depends on the type of tile they affect.


==== Wire Modifier ====
The size of the modifier is irrelevant, and modifiers default to zero.  That is, if a tile is expecting a 16-bit modifier but the high byte is zero, an 8-bit modifier works as well.  If a tile is expecting an 8-bit modifier which is zero, the modifier may be omitted entirely.
This is an 8-bit modifier that affects floors, metal walls, on/off switches, transformers, and blue/red fans (possibly more?). It adds wires to the tile it affects. Any number of these bits can be combined:
 
{| class="article-table"
==== Wire modifier ====
This is an 8-bit modifier that affects [[floor]]s, [[steel wall]]s, ON/OFF switches, [[transmogrifier]]s, and [[Blue teleport|blue]] and [[red teleport]]s<!--possibly more?-->. It adds [[wire]]s to the tile it affects. Any number of these bits can be combined:
{| class="wikitable" border="1"
!Bitmask
!Bitmask
!Meaning
!Meaning
|-
|-
|0x1
|0x1
|Wire, North
|[[Wire]] ''(N)''
|-
|-
|0x2
|0x2
|Wire, East
|[[Wire]] ''(E)''
|-
|-
|0x4
|0x4
|Wire, South
|[[Wire]] ''(S)''
|-
|-
|0x8
|0x8
|Wire, West
|[[Wire]] ''(W)''
|-
|-
|0x10
|0x10
|Wire Tunnel, North
|[[Wire tunnel]] ''(N)''
|-
|-
|0x20
|0x20
|Wire Tunnel, East
|[[Wire tunnel]] ''(E)''
|-
|-
|0x40
|0x40
|Wire Tunnel, South
|[[Wire tunnel]] ''(S)''
|-
|-
|0x80
|0x80
|Wire Tunnel, West
|[[Wire tunnel]] ''(W)''
|}
|}


==== ASCII Modifier ====
==== Letter tile modifier ====
This is an 8-bit modifier that affects "sunken" floors by adding a symbol (usually an ASCII symbol) to them:
This is an 8-bit modifier that affects [[letter tile]]s by adding a symbol (usually an ASCII symbol) to them:
{| class="article-table"
{| class="wikitable" border="1"
!Values
!Values
!Meaning
!Meaning
|-
|-
|0x1c
|0x1c
|Up Arrow
|Up arrow
|-
|-
|0x1d
|0x1d
|Right Arrow
|Right arrow
|-
|-
|0x1e
|0x1e
|Down Arrow
|Down arrow
|-
|-
|0x1f
|0x1f
|Left Arrow
|Left arrow
|-
|-
|0x20 through 0x5f
|0x20 through 0x5f
|Corresponding ASCII Characterr (' ' through '_')
|Corresponding ASCII character (' ' through '_')
|}
|}


==== Clone Machine Arrow Modifier ====
==== Clone machine arrow modifier ====
This is an 8-bit modifier that affects clone machines by specifying their direction. The values can be combined and will show up on the clone machine appropriately, but the game will only clone in one direction:
This is an 8-bit modifier that affects [[clone machine]]s by specifying their direction. The values can be combined and will show up on the clone machine appropriately, but the game will only clone in one direction.
{| class="article-table"
{| class="wikitable" border="1"
!Value
!Value
!Meaning
!Meaning
|-
|-
|0x1
|0x1
|Arrow, North
|Arrow ''(N)''
|-
|-
|0x2
|0x2
|Arrow, East
|Arrow ''(E)''
|-
|-
|0x4
|0x4
|Arrow, South
|Arrow ''(S)''
|-
|-
|0x8
|0x8
|Arrow, West
|Arrow ''(W)''
|}
|}


==== Custom Floor/Wall Modifier ====
==== Custom floor/wall modifier ====
This is an 8-bit modifier that affects custom walls or floors by replaces their style:
This is an 8-bit modifier that affects custom walls or floors by replaces their style:
{| class="article-table"
{| class="wikitable" border="1"
!Value
!Value
!Meaning
!Meaning
|-
|0x0
|Green
|-
|-
|0x1
|0x1
|Custom Wall/Floor, Pink
|Pink
|-
|-
|0x2
|0x2
|Custom Wall/Floor, Yellow
|Yellow
|-
|-
|0x3
|0x3
|Custom Wall/Floor, Blue
|Blue
|}
|}


==== Logic Modifier ====
==== Logic modifier ====
This is an 8-bit modifier that affects an inverter gate by replacing it with another gate:
This is an 8-bit modifier that affects an inverter gate by replacing it with another gate. Modifiers outside of the ranges specified below will produce [[voodoo tile]]s.
{| class="article-table"
 
Most logic gates have 4 assigned values instead of just 1; unless otherwise specified below, the face direction of the logic gate is determined by its index, stored in the order: North, East, South, West.
{| class="wikitable" border="1"
!Values
!Values
!Meaning
!Meaning
|-
|-
|0x1 through 0x3
|0x0 through 0x3
|Inverter Gate East/South/West
|[[Inverter|Inverter gate]]
|-
|-
|0x4 through 0x7
|0x4 through 0x7
|And Gate North/East/South/West
|[[AND gate]]
|-
|-
|0x8 through 0xb
|0x8 through 0xb
|Or Gate North/East/South/West
|[[OR gate]]
|-
|-
|0xc through 0xf
|0xc through 0xf
|Xor Gate North/East/South/West
|[[XOR gate]]
|-
|-
|0x10 through 0x13
|0x10 through 0x13
|Latch North/East/South/West, Clockwise Arrow
|[[Latch gate]] ''(clockwise arrow)''
|-
|-
|0x14 through 0x17
|0x14 through 0x17
|Nand Gate North/East/South/West
|[[NAND gate]]
|-
|-
|0x1e through 0x27
|0x1e through 0x27
|Counter Gate 0 through 9
|[[Counter|Counter gate]] ''(0 through 9)''
|-
|-
|0x40 through 0x43
|0x40 through 0x43
|Latch North/East/South/West, Counter Clockwise Arrow
|[[Latch gate]] ''(counterclockwise arrow)''
|}
|}


==== Track Modifier ====
==== Track modifier ====
This is an 8- or 16-bit modifier that affects the train tracks base tile. The low-order byte specifies which tracks exist; any number of bits can be combined:
This is a 16-bit modifier that affects the [[railroad track]] tile. The low byte specifies which tracks exist; any number of bits can be combined:
{| class="article-table"
{| class="wikitable" border="1"
!Bitmask
!Bitmask
!Meaning
!Meaning
|-
|-
|0x1
|0x1
|Track, North East
|Turn ''(NE)''
|-
|-
|0x2
|0x2
|Track, South East
|Turn ''(SE)''
|-
|-
|0x4
|0x4
|Track, South West
|Turn ''(SW)''
|-
|-
|0x8
|0x8
|Track, North West
|Turn ''(NW)''
|-
|-
|0x10
|0x10
|Track, Horizontal
|Horizontal
|-
|-
|0x20
|0x20
|Track, Vertical
|Vertical
|-
|-
|0x40
|0x40
|Track Switch
|Track switch
|}
|}
The high order byte is optional and specifies which track is the active one. If omitted, the North East track is the active one. For tiles with a track switch, the active track is the only one that can be used (the other are shown red).
 
{| class="article-table"
The high byte is comprised of two nybbles.  The lower nybble specifies which track is active. For tiles with a track switch, the active track is the only one that can be used; the others are shown in red.
{| class="wikitable" border="1"
!Value
!Value
!Meaning
!Meaning
|-
|-
|(Omitted)
|0x000
|North East track is active
|NE track is active
|-
|-
|0x100
|0x100
|South East track is active
|SE track is active
|-
|-
|0x200
|0x200
|South West track is active
|SW track is active
|-
|-
|0x300
|0x300
|North West track is active
|NW track is active
|-
|-
|0x400
|0x400
Line 994: Line 1,149:
|Vertical track is active
|Vertical track is active
|}
|}
The upper nybble is the tile's initial "entered" direction.  When an actor starts the level already on top of this tile, it's treated as though it entered by moving in this direction.  (If there are no tracks corresponding to that direction, the actor will be unable to move.)


=== REPL / PRPL section ===
=== REPL / PRPL section ===
This section contains the replay data. If this is a PRPL section, it must be unpacked first (see Section Packing).
This section contains the replay data. If this is a PRPL section, it must be unpacked first (see Section Packing). However the hash for the replay and the valid solution bit-flag is set in the OPTN section and not here


The contents of this section are as follows:
The contents of this section are as follows:
{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
|-
|-
|1
|1
|Unknown (Usually 0)
|Usually 0; function unknown
|-
|-
|1
|1
|Random force floor initial direction
|[[Force floor|Random force floor]] initial direction
|-
|-
|1
|1
|Randomness seed (used by blobs)
|Randomness seed ''(used by [[blob]]s)''
|-
|-
|Varies
|Varies
|A sequence of input changes, optionally terminated by 0xff
|A sequence of input changes; optionally terminated by 0xff
|}
|}


==== Input Change ====
==== Input change ====
Specifies a change in input:
Specifies a change in input:
{| class="article-table"
{| class="wikitable" border="1"
!Bytes
!Bytes
!Content
!Content
|-
|-
|1
|1
|Number of frames passed since previous input change. Always <= 0xfc. Larger delays are specified via multiple input changes.
|Number of frames to wait before inputting the new input. The last input is still held while the new input is pending. Always <= 0xfc. Larger delays are specified via multiple input changes
|-
|-
|1
|1
Line 1,029: Line 1,186:
|}
|}


==== Input Bitmask ====
==== Input bitmask ====
Specifies which keys are pressed, any number of bits can be combined:
Specifies which keys are pressed, any number of bits can be combined:
{| class="article-table"
{| class="wikitable" border="1"
!Bitmask
!Bitmask
!Meaning
!Meaning
Line 1,057: Line 1,214:
|-
|-
|0x80
|0x80
|If set, this input is for player 2 in a split-screen game.
|If set, this input is for player 2 in a split-screen game <!-- doesn't work? -->
|}
|}


<references />
<references/>
 
[[Category:Terminology]]
[[Category:Terminology]]
[[Category:File formats]]
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