Difference between revisions of "0x0002"
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For those familiar with TS1 modding, there is nothing new here. This page is designed primarily for the newcomer who does not have any previous experience with SimAntics. | For those familiar with TS1 modding, there is nothing new here. This page is designed primarily for the newcomer who does not have any previous experience with SimAntics. | ||
| Line 9: | Line 8: | ||
The structure (with the exception of the as yet unknown bytes) is also fairly simple. We will use the following example instruction to explore the structure further: | The structure (with the exception of the as yet unknown bytes) is also fairly simple. We will use the following example instruction to explore the structure further: | ||
| − | + | aa, aa, bb, bb, ??, oo, AA, BB | |
| + | xx, xx, xx, xx, xx, xx, xx, xx | ||
Example: | Example: | ||
| − | + | 00, 00, 00, 00, 00, 05, 19, 09 | |
| + | 00, 00, 00, 00, 00, 00, 00, 00 | ||
| − | + | ;xx | |
| − | + | :''unused'' | |
| − | + | ;oo | |
| − | + | :the [[Operator]], which tells the game which mathematical/logical operation to perform | |
| − | + | ;AA | |
| − | + | :the first (or left-side) [[Operand]] | |
| − | + | ;aa | |
| − | + | :argument for the first operand | |
| − | + | ;BB | |
| − | + | :the second (or right-side) [[Operand]] | |
| − | + | ;bb | |
| − | + | :argument for the second Operand | |
| + | ;?? | ||
| + | :was never completely understood in TS1. Either it is some type of flag or is unused. | ||
So in our example instruction: | So in our example instruction: | ||
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{{OldWikiEntryCleaned}} | {{OldWikiEntryCleaned}} | ||
| − | [[Category:Modding]]] | + | [[Category:Sims 2 Modding]] |
| + | [[Category:Primitives|{{PAGENAME}}]] | ||
Latest revision as of 12:24, 17 September 2012
For those familiar with TS1 modding, there is nothing new here. This page is designed primarily for the newcomer who does not have any previous experience with SimAntics.
[edit] Overview
This is by far the most used BHAV operation and, therefore, one of the first an aspiring behavioral modder should learn. At its heart, Expression is a fairly simple instruction, taking two items and performing a logical comparison or mathematical calculation with them.
[edit] Structure
The structure (with the exception of the as yet unknown bytes) is also fairly simple. We will use the following example instruction to explore the structure further:
aa, aa, bb, bb, ??, oo, AA, BB xx, xx, xx, xx, xx, xx, xx, xx
Example:
00, 00, 00, 00, 00, 05, 19, 09 00, 00, 00, 00, 00, 00, 00, 00
- xx
- unused
- oo
- the Operator, which tells the game which mathematical/logical operation to perform
- AA
- the first (or left-side) Operand
- aa
- argument for the first operand
- BB
- the second (or right-side) Operand
- bb
- argument for the second Operand
- ??
- was never completely understood in TS1. Either it is some type of flag or is unused.
So in our example instruction:
- the Operator is 0x05 (assign to)
- the first Operand is 0x19 (local variable)
- which has an argument of 0x00 (numeric 0)
- the second Operand is 0x09 (parameter)
- which has an argument of 0x00 (numeric 0)
Our instruction would therefore be read as "local variable 0x0 := parameter 0x0". In simpler terms, this means "the value for local variable 0x0 := the value listed in parameter 0x0"
[edit] See also
This article is imported from the old MTS2 wiki. It's original page, with comments, can be found at http://old_wiki.modthesims2.com/0x0002
