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| − | {{OldWikiEntry}} ====""SimAntics"" Behavioural Function====
| + | #REDIRECT [[42484156]] |
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| − | __All BHAVs have a similar basic format:__
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| − | 64 - Filename (null terminated)
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| − | 12 - Header
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| − | ''var'' - Instruction 1
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| − | ''var'' - Instruction 2
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| − | ''var'' - Instruction n
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| − | ...
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| − | __Each header also uses a similar format:__
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| − | 2 - signature (0x8000 through 0x8009)
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| − | 2 - count (number of instructions in file)
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| − | 1 - tree type (deprecated)
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| − | 1 - args (number of Parameters passed to the subroutine)
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| − | 1 - locals (number of local variables used in the subroutine)
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| − | 1 - header flag (deprecated)
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| − | 4 - Tree Version # (signed integer)
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| − | The signature also defines the structure of the individual
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| − | instructions, as follows:
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| − | * 8000, 8001 & 8002 (instruction length: 12 bytes)
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| − | - 2 - Function/OpCode
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| − | - 1 - Goto on True
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| − | - 1 - Goto on False
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| − | - 8 - Operands
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| − | * 8003 & 8004 (instruction length: 20 bytes)
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| − | - 2 - Function/OpCode
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| − | - 1 - Goto on True
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| − | - 1 - Goto on False
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| − | - 16 - Operands
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| − | * 8005 & 8006 (instruction length: 21 bytes)
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| − | - 2 - Function/OpCode
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| − | - 1 - Goto on True
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| − | - 1 - Goto on False
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| − | - 1 - Node Version (Flag - 0x00 or 0x01)
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| − | - 16 - Operands
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| − | * 8007 & 8008 (instruction length: 23 bytes)
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| − | - 2 - Function/OpCode
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| − | - 2 - Goto on True
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| − | - 2 - Goto on False
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| − | - 1 - Node Version (Flag - 0x00 or 0x01)
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| − | - 16 - Operands
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| − | * 8009 (instruction length: 24 bytes)
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| − | - 2 - Function/OpCode
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| − | - 2 - Goto on True
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| − | - 2 - Goto on False
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| − | - 1 - Node Version (Flag - 0x00 or 0x01)
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| − | - 16 - Operands
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| − | - 1 - Cacheflags
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| − | Notes:
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| − | The 1-byte Goto statements in 8001-8006 appear to be the same as
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| − | was used in TS1: 0xFD as Error, 0xFE as True, and 0xFF as False.
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| − | The 2-byte Goto statements in 8007 appear to be using
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| − | 0xFFFC as Error, 0xFFFD as True, and 0xFFFE as False.
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| − | The 8007 format can contain more than 256 seperate instructions,
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| − | thus the use of 2-byte Goto statements.
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| − | Number of each signature type (0x8000 - 0x8007) contained in objects.package:
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| − | 0x8000 - 1
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| − | 0x8001 - 2
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| − | 0x8002 - 25
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| − | 0x8003 - 75
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| − | 0x8004 - 4
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| − | 0x8005 - 285
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| − | 0x8006 - 1,357
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| − | 0x8007 - 15,507
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| | [[Category:Modding]] | | [[Category:Modding]] |
| | [[Category:InternalFormats]] | | [[Category:InternalFormats]] |
| | [[Category:FormatsByName]] | | [[Category:FormatsByName]] |
