A to Z Scripting: Basic maths

Basic maths

Basic maths symbols

You can use basic maths symbols, as well as brackets:

symbol	effect	can be used with
+	add/combine	floats, vectors, strings
-	subtract	floats, vectors
*	multiply	floats
/	divide	floats

The = sign

An important difference is what the = sign does. In scripting, = means "set", while == means "equals".

teleport_destination	= '20 20 20';		//set teleport_destination to '20 20 20'
float1 			= float2 + float3;	//set float1 to the sum of float2 and float3
if ( float1 == float2 )				//check if float1 is equal to float2

Combinations

You can freely combine script events, variables and numbers in one line like this:

teleport_destination = $player1.getOrigin() + teleportation_offset + '0 0 16';

Strings can be cobbled together from strings, floats and vectors with the + sign. This is quite useful for sending helpful messages to the console:

sys.println(entity1 + " is at the location " + position1);

Increasing/decreasing

Increasing (incrementing) a variable's value by 1 would work like this:

counter = counter + 1;		//set "counter" to: the current value of "counter" + 1

An alternative method to increase a variable by 1 is:

counter++;			//increase "counter" by 1
counter--;			//decrease "counter" by 1

Vectors

You can access individual components of a vector variable by appending _x, _y or _z to the name, i.e. teleport_destination_z. These will be floats.

Vector multiplication requires special script events: DotProduct() and CrossProduct().

More on vectors and what you can do with them in A to Z Scripting: Special methods.

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