Difference between revisions of "If"
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added info about logical operators being unaffected by parenthesis
imported>Gblues (Added overview, else/elseif/endif information) |
imported>Gblues (added info about logical operators being unaffected by parenthesis) |
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| <nowiki>if x == 1 || y == 1 ; considered true unless both x and y equal 0.</nowiki> | | <nowiki>if x == 1 || y == 1 ; considered true unless both x and y equal 0.</nowiki> | ||
|} | |} | ||
Note that while multiple logical operators can be used, the operators are always evaluated from left to right regardless of parentheses. For example: | |||
<nowiki>if myVar1 == 1 && (myVar2 == 1 || myVar2 == 5)</nowiki> | |||
Logically, this should say "if myVar is 1 AND myVar2 is either 1 or 5..." but in Oblivion, this will be evaluated as "if myVar is 1 AND myVar2 is 1, or if myVar2 is 5, ..." (thanks MaXiMiUS and JOG for testing this) | |||
== Comparisons and Expressions == | == Comparisons and Expressions == | ||
The comparison operators can be used with any expression that can be evaluated into a number. Assuming "a = 17", "b = 20" and "c = a - b", all of the following expressions work as expected. Parentheses are only needed when they're necessary for mathematical | The comparison operators can be used with any expression that can be evaluated into a number. Assuming "a = 17", "b = 20" and "c = a - b", all of the following expressions work as expected. Parentheses are only needed when they're necessary for mathematical reasons. | ||
IF c == -3 && b == 20 | IF c == -3 && b == 20 | ||