Difference between revisions of "Set"
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Sets a local or global variable to a specified value. This value can be a number or an expression. | Sets a local or global variable to a specified value. This value can be a number or an expression. | ||
'''''Arithmetic Operators:''''' | |||
{|border="1" cellpadding="5" cellspacing="0" | |||
|- | |||
! style="background:#efefef;" | Operator | |||
! style="background:#efefef;" | Description | |||
|- | |||
| <nowiki>+</nowiki> | |||
| Addition | |||
|- | |||
| <nowiki> -</nowiki> | |||
| Subtraction | |||
|- | |||
| <nowiki> *</nowiki> | |||
| Multiplication | |||
|- | |||
| <nowiki> /</nowiki> | |||
| Division | |||
|- | |||
| <nowiki> %</nowiki> | |||
| Modulus (do integer division and return remainder) | |||
|} | |||
==Notes== | |||
*Improper syntax can cause scripts to stall myseriously, such as in the example below (the problem being the extra '134' at the end). | |||
set MyRefVar to SomeOtherRef 134 | |||
*The modulos operator "%" is evaluated after multiplication/division but before addition/subtraction | |||
4 * 3 % 2 = 0 | |||
4 * (3%2) = 4 | |||
1 + 2 % 3 = 3 | |||
(1+2) % 3 = 0 | |||
*A minus right in front of a number or variable acts as "negative"-sign. When you want to do a subtraction, you need at least one space before and behind the minus. This is the only place where you really need a space between arithmetic operators. (For instance: "a-b" will not compile; it needs to be "a - b") | |||
*When using only numbers in a division, you need to use at least one decimal point to tell the game that you want to use floating point division, without a decimal point the remainder is truncated at the end of the division: | |||
float a | |||
set a to 9/5 ; will set "a" to 1.000 | |||
set a to 9.0/5 ; will set "a" to 1.800 | |||
*When you want to store the correctly rounded result of a division in an integer-variable, you need to make sure, that the calculation uses floating point (so that the decimal-fraction isn't truncated) and add 0.5: | |||
short a | |||
set a to 9/5 ; will set "a" to 1 | |||
set a to 9/5 + 0.5 ; will set "a" to 1 | |||
set a to 9.0/5 ; will set "a" to 1 | |||
set a to 9.0/5 + 0.5 ; will set "a" to '''2''' | |||
set a to 7.0/5 + 0.5 ; will set "a" to '''1''' | |||
short a | |||
set a to 9 | |||
set a to a/5.0 + 0.5 ; will set "a" to '''2''' | |||
short a | |||
float b | |||
set b to 9 | |||
set a to b/5 + 0.5 ; will set "a" to '''2''' | |||
*You can also use a comparison as the "value". The variable will then be set either to 1 or 0 depending on whether the condition is true or not. | |||
set goodluck to player.Getav luck > 60 | |||
Does the same as | |||
if player.Getav luck > 60 | |||
set goodluck to 1 | |||
else | |||
set goodluck to 0 | |||
endif | |||
You can use arithmetic operations on a comparison value, but when you do so you need to put the comparison in parentheses: | |||
set luckbonus to 50*(player.Getav luck > 60) | |||
Does the same as | |||
if player.Getav luck > 60 | |||
set luckbonus to 50 | |||
else | |||
set luckbonus to 0 | |||
endif | |||
'''''Other Examples:''''' | |||
set a to 2 | set a to 2 | ||
set b to a*a | set b to a*a | ||
set c to (b-a)*b-a | set c to (b - a)*b - a | ||
set d to (3*-b+a)-c)/-2 | set d to ((3* -b+a) - c)/ -2 | ||
message "a=%.0f, b=%.0f, c=%.0f, d=%.0f" a b c d ; ("a=2, b=4, c=6, d=8") | |||
set stage to getstage quest1 + 10 | set stage to getstage quest1 + 10 | ||
set weapondrawn to player.isweaponout | |||
==Bug== | |||
The set function has a bug that will cause the CS to crash if the size of its compiled line is greater than 73 bytes. It's rare to have a '''Set''' line that long, so most people won't run into the bug. The main place where it appears is when using [[:Category: TSFC| TSFC]] or [[:Category: Pluggy| Pluggy]] to create long strings. | |||
[[Category:Commands]] | |||