Advanced Components

For more complex component relationships, the declarative offers a more extensive function, createAdvancedComponent. This allows you to specify 2 more parameters about the behavior of the component. Let’s take a look:

This allows us to create a component that inherits the event implementations of another (or pass an empty string if you do not wish to inherit anything), as well as enable the tick event for specific component instances, which will fire every tick.

For instance, imagine that we had an npc component, which would spawn a villager with no AI and update the component key using the Key Change Pattern. We could then create a merchant component that inherits the npc component and adds some inventory menu functionality:

PlayerEvent(Join) {
  CallFunction(__init)
  CallFunction(createComponent, "npc", new Location(25.5, 50.5, 69.5))
  // Create an unticked "merchant" component that inherits the "npc" component events:
  CallFunction(createComponent, "merchant", "npc", 0, new Location(22.5, 50.5, 69.5))
}
 
Function("npc:init") {
  SpawnMob(SpawnEgg(Villager), Variable(loc, LOCAL), "<#bf7e45>NPC")
  SetAI(None)
  CallFunction(setComponentKey, GameValue(UUID, LastEntity))
}
 
Function("merchant:init") {
  // Select the villager spawned in the npc:init event now that the key has changed
  SelectEntity(Variable(uuid, LOCAL))
  SetName("<#bf7e45>MERCHANT")
  SetVillagerBiome("Taiga")
}
 
Function("merchant:onClickEntity") {
  ShowInv(...)
  PlaySound("Wandering Trader Disappear", 1, 2)
}

Viewing Examples Live

To view the results of the snippet above, run @e4 to view the example above on plot 60983