Top-level statements and initialization

Write top-level statements before function and template declarations. The compiler places them in a generated function registered in minecraft:load.

var message = "Datapack loaded"
print(message)

func main() {
    print(message)
}

Loading the datapack or running /reload prints the top-level message once. Calling main reads the same file's top-level variable again.

File order is namespace, imports, type aliases, top-level statements, then function and template declarations. Top-level statements can call functions declared later in the file.

Use top-level statements to initialize a scoreboard objective:

/scoreboard objectives add rewards dummy

func main() {
    /scoreboard players add @s rewards 1
}

Named functions run through explicit calls. To schedule work every tick, add its function to the minecraft:tick tag resource.