From ADRIFT 5 Manual Wiki
A function is a procedure that can be called, which returns a value. Functions can optionally take parameters.
There are four types of functions in ADRIFT. These are:
- Every item in ADRIFT can be referred to by it's key. If you type a key (or a function that resolves to a key) of a Location, Character, Object, Group or Event then you can access all the properties of that item, in addition to special functions such as listing and counting etc.
- A special feature of item functions is that you can chain them together. If you use a function that returns the key of any of the above items then you can append another function to access properties of that item.
- These are distinguished from normal text by placing the percent (%) symbol before and after them. They sometimes have parameters which are enclosed in [square brackets].
- The contents of Variables are accessed by placing the percent (%) symbol before and after their name, and when arrays are used the index of the wanted element is enclosed in square brackets.
- These are a special set of functions that can only be used within Expressions. Most of these are either math functions or functions used to change a string of text.
- Expression functions that take parameters enclose them in (parentheses).
- These are functions which you create yourself. Multiple references can be defined which become parameters in the function call.
- The function returns the contents of its Text box, which will usually use one or more of the above function types to generate the wanted text.
- User functions are used in the same way as general functions, with the percent(%) symbol before and after, and any parameters in square brackets.
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