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String formatting

You will find many times in your game when you need to create a string based on the values of variables, and functions like Display and String.Format allow you to do so.

AGS uses printf-style argument formatting (used by the C language). This means that you intersperse your text with special codes to insert a variable's value. These special codes begin with a percent sign, and then specify the variable type. The actual variables that you want to display are then listed afterwards.

The special codes you can use are as follows:

Code Description
%d Integer (use to display value of int and short variables)
%0Xd Integer left-padded with up to X zeros
%s String (use to display string variables)
%c Character (displays the ASCII character of the supplied value)
%f Float (displays a float variable)
%.Xf Float to X decimal places
%% Display the percent character (ie. no variable)
[ Inserts a new line into the message

Some examples:

int life = 42;
float twoPi = Maths.Pi * 2.0;
String message = "A string variable";

Display("A normal string with no variables.");
Display("The meaning of life is %d.", life);
Display("The meaning of life in 3 digits is %03d.", life);
Display("2 times Pi is %f.", twoPi);
Display("The message says: %s.", message);
would display:
A normal string with no variables.
The meaning of life is 42.
The meaning of life in 3 digits is 042.
2 times Pi is 6.283186.
The message says: A string variable.
You can display as many variables as you like in one line:
int life = 42;
float twoPi = Maths.Pi * 2.0;

Display("Life is %d, 2 x Pi = %f, and my dinner is %s.", life, twoPi, "awful");
but, be very careful that you supply the right number of variables to correspond with the tags you use in the text. If you don't supply enough variables, your game could crash.
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