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Macro Programming Language 127
Deko500 User’s Guide
command girl
type "It’s a girl"
end
if $name == "Amy"
girl
elseif $name == "Meg"
girl
elseif $name == "Mickey"
boy
end
The subroutines “boy” and “girl” are local to this macro. When the macro ends, the
subroutines, like the variables, vanish.
RETURN VALUES
The return command directs Deko500 to stop the current macro or subroutine and
return the value of its expression parameter to the macro that called it.
return [expression=]
For example, you might have a simple command called test that returns 1 if
successful, or 0 if not:
command test
if $name == "Amy"
return 1
else
return 0
end
The subroutine test can then be called from another macro:
$result = test
if $result == 1
type "It’s a girl"
end
Here are a few examples of Deko500 commands that return values:
$squareroot = sqrt 4.
sqrt returns the real value 2.
$test = file_open "moon over miami"
file_open returns 1 if Deko500 successfully opens "moon over miami", or 2 if
not.
$color = rgb00100
The rgb command creates and returns a color object that is then assigned to the
variable $color.
OBJECTS
An object is a data structure created by a command. Typical objects in Deko500
include colors, shaders, ellipses, rectangles, fonts and looks.
The elements of an object correspond exactly with the parameters of the command
that created it. Consider the rgb command, which creates a color: