Logical Operators

Operators used to compare data:

== :: Equal To
!= :: Not Equal To
!  :: Negation (Not equal to)
<  :: Less than
>  :: Greater than
<= :: Less or Equal to
>= :: Greater or Equal to
&& :: And
|| :: Or

If Statements

An if statement is used to verify whether some data satisfies certain conditions, and then to execute code block depending on the outcome.

if (3 < 5)
{
    print("Condition met"); // print a message in killing spree feed
}
else
{
    print("Condition not met");
}

This can also be used to check the conditions of player variables or just variables.

self.condition = false;

if (self.condition)
{
    // is true?
    self print("condition is true");
}
else
{
    self print("condition is false");
}

You can also use an else if & else conditions. This is used in a scenario where you want to check multiple comparisons.

if(var1 == var2)
{
    // If above arguement is true
}
else if(!var1 && var3)
{
    // If var1 is false but var3 is true
}
else
{
    // If all other if statements were false
}

Keep in mind that you will find different ways to write the code, for example, you can see that you can ignore the use of { }, in case you consider unnecessary and messy only if there is a single line. remember to check that the indentation is correct

if (condicion)
{
    // A block with several lines of code
    print("Condition met");
    print("Condition met");
    print("Condition met");
}

if (condicion)
    print("Condition met"); // one line of code

if (condicion)
    print("Condition met"); // one line of code
else
    print("Condition not met"); // one line of code


if (condicion) print("Condition met"); // one line of code
else print("Condition not met"); // one line of code

In GSC, you can check if a variable is defined as a condition. This function is called isDefined, it takes the variable as the only parameter, and returns true/false.

var = 5;
var2 = 6;

if (isDefined(var))
{
    // var is defined as 5
    print("var is defined");
    var2 = undefined; // undefine var2
}

if (isDefined(var2))
{
    // this should not be met as var2 was undefined.
    print("var2 is defined");
}
else if (!isDefined(var2))
{
    print("var2 is undefined");
}

Switch

Switch cases are useful for checking the case of a lot of values. This is usually seen to be faster and recommended to use than a if statement.

value = 3;
switch (value)
{

    case 1:
        print("Value was 1");
        break;
    case 2:
        print("Value was 2");
        break;
    case 3:
        print("Value was 3");
        break;
    default:
        print("Value was not found");
        break;

}

Warning

If you use a switch inside a loop, using break or return will terminate the entire flow, not just the switch.

Sometimes the engine does what it wants and ignores the break or return behavior in a switch statement inside loops, just as it can give error in switch statement for no apparent reason and you will have to use if statements, these behaviors occur rarely and in environments where there is a lot of modularization.