Structs

Structs are a nice and tidy way to store data. They can be declared by using struct , followed by the ID/name of your structure. Every pixel that comes after that is a struct argument (or field, if you are familiar with OOP).

In this example we declare a struct identified by a blue pixel with two fields .

Once a struct is declared, we can initialize it and store it into a variable by just passing the struct name as the value of the variable:

Now the variable is linked to the struct we defined earlier, and all of its fields have their value set to 0.

Accessing fields

Fields in a struct variable can be accessed and updated by the use of the dot operator op.dot which works just as a regular dot from most programming languages.

The following expression accesses the green field from the variable we had initialized before. If we printed out its content, it would print 0, as previously said.

On the other hand, if you want to change a field's value, you can simply see the whole 'struct dot field ' expression as a single variable, so that you can use variable.set on it:

Here the green field gets updated, so that its stored value is "A" .