Compiler Data Types

Because the mlog environment is different from the regular javascript environments, code is structured in a different way.

To compile your scripts, mlogjs uses four internal types to represent values:

• Literal
• Store
• Function
• Object

Literal

Literal values are the raw values that you write directly. They are constant strings or numbers.

123; // is a literal
const a = 123; // is a literal as well
const b = "some string"; // string literal

Store

Store values are the registers in the game inside a processor.

You can also "sense" their properties as if they were fields.

let a = 123; // is a store number
let b = "string"; // is a store string

const building = getBuilding("conveyor1");
const item = Items.coal;

print`health: ${building.health}, ${item}: ${building[item]}`;

printFlush();

output:

set a:1:4 123
set b:2:4 "string"
sensor &t0 conveyor1 @health
sensor &t1 conveyor1 @coal
print "health: "
print &t0
print ", "
print @coal
print ": "
print &t1
printflush message1

Function

Function values are constants. Functions can be inlined

function add(a, b) {
  return a + b;
}

Object

Object values are constants.

const obj = {
  a: 1,
  b: (a, b) => a + b,
};
obj.a; // 1
obj.b(1, 2); // 3