AGAST - Scripts and Functions

Script Language: Statements: Scripts and Functions

Start vs. Call

A script may be called or started by any other script block. If a script is called, the caller waits for it to finish. When a script is started, it executes in the background while the current script also continues execution.

MyScript; // call a script and ignore its return value
i = MyScript; // call a script and use its return value
start MyScript; // start a script in the background

See Also...

Guide: Script Language: Statements: Control: [Start-Statement]

Function Calls

A function is a predefined subprogram inside the interpreter. Some functions require parameters to be passed as a list of arguments.

suspend; // no arguments without parens
suspend(); // no arguments with parens
setPosition(x, y); // two arguments
setPosition x, y; // two arguments, parens omitted

The last example above is not valid if the function is called from inside an expression.

If a function's return value is not specified, then it is zero. But many functions, such as the following, return a meaningful value.

choice = dialog();
color = RGB(100, 240, 0);