A to Z Scripting: Basic maths: Difference between revisions

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== Basic maths ==
== Basic maths ==
=== Basic maths symbols ===
=== Basic maths symbols ===
You can use basic maths symbols, as well as brackets:
You can use basic maths symbols, as well as brackets (parentheses):
{| class="wikitable"
{| class="wikitable"
|-
|-
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  if ( float1 == float2 ) //check if float1 is equal to float2
  if ( float1 == float2 ) //check if float1 is equal to float2


=== Combinations ===
 
=== Combining ===
You can freely combine script events, variables and numbers in one line like this:
You can freely combine script events, variables and numbers in one line like this:
  teleport_destination = $player1.getOrigin() + teleportation_offset + '0 0 16';
  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:
Strings can be cobbled together from strings, floats and vectors with the + sign. This is quite useful for sending helpful messages to the console:
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=== Vectors ===
=== Vectors ===
You can add or subtract vectors from each other. Things like multiplication or finding the magnitude require script events such as DotProduct(), CrossProduct() and vecLength().
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.  
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 detail on vector maths and what you can do with it in [[A to Z Scripting: Special methods]].
 
More on vectors and what you can do with them in [[A to Z Scripting: Special methods]].





Revision as of 15:49, 21 December 2020

Basic maths

Basic maths symbols

You can use basic maths symbols, as well as brackets (parentheses):

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


Combining

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 add or subtract vectors from each other. Things like multiplication or finding the magnitude require script events such as DotProduct(), CrossProduct() and vecLength().

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.

More detail on vector maths and what you can do with it in A to Z Scripting: Special methods.


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