Difference between revisions of "Set"
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imported>JOG m |
imported>JOG m |
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'''Notes:''' | '''Notes:''' | ||
When using only numbers in | *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 | float a | ||
set a to 9/5 ; will set "a" to 1.000 | set a to 9/5 ; will set "a" to 1.000 | ||
set a to 9.0/5 ; will set "a" to 1.800 | set a to 9.0/5 ; will set "a" to 1.800 | ||
When | *When you want to store the correctly rounded result of a division in an integer-variable, you need to make sure the calculation uses floating poing (so that the decimal-fraction isn't truncated) and add 0.5: | ||
short a | short a | ||
set a to 9/5 ; will set "a" to 1 | 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 9/5 + 0.5 ; will set "a" to 1 | ||
set a to 9.0/5 ; will set "a" to 1 | set a to 9.0/5 ; will set "a" to 1 | ||
set a to 9.0/5 + 0.5 ; will set "a" to '''2''' | 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''' | set a to 7.0/5 + 0.5 ; will set "a" to '''1''' | ||
short a | |||
float b | |||
set b to 9 | |||
set a to b/5 + 0.5 ; will set "a" to '''2''' | |||
'''''Examples:''''' | |||
'''''Other Examples:''''' | |||
set a to 2 | set a to 2 | ||
set b to a*a | set b to a*a | ||
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set stage to getstage quest1 + 10 | set stage to getstage quest1 + 10 | ||
[[Category:Commands]] | [[Category:Commands]] | ||
Revision as of 12:44, 17 April 2006
Sets a local or global variable to a specified value. This value can be a number or an expression.
Arithmetic Operators:
| Operator | Description |
|---|---|
| + | Addition |
| - | Subtraction |
| * | Multiplication |
| / | Division |
| % | Modulus (do integer division and return remainder) |
Notes:
- 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 the calculation uses floating poing (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 float b set b to 9 set a to b/5 + 0.5 ; will set "a" to 2
Other Examples:
set a to 2
set b to a*a
set c to (b - a)*b - a
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