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package moe.nea.firmament.events
import com.mojang.datafixers.util.Pair
import net.minecraft.entity.Entity
import net.minecraft.entity.EquipmentSlot
import net.minecraft.entity.LivingEntity
import net.minecraft.entity.data.DataTracker
import net.minecraft.item.ItemStack
import net.minecraft.network.packet.s2c.play.EntityAttributesS2CPacket
import moe.nea.firmament.annotations.Subscribe
import moe.nea.firmament.util.MC
/**
* This event is fired when some entity properties are updated.
* It is not fired for common changes like position, but is for less common ones,
* like health, tracked data, names, equipment. It is always fired
* *after* the values have been applied to the entity.
*/
sealed class EntityUpdateEvent : FirmamentEvent() {
companion object : FirmamentEventBus<EntityUpdateEvent>() {
@Subscribe
fun onPlayerInventoryUpdate(event: PlayerInventoryUpdate) {
val p = MC.player ?: return
val updatedSlots = listOf(
EquipmentSlot.HEAD to 39,
EquipmentSlot.CHEST to 38,
EquipmentSlot.LEGS to 37,
EquipmentSlot.FEET to 36,
EquipmentSlot.OFFHAND to 40,
EquipmentSlot.MAINHAND to p.inventory.selectedSlot, // TODO: also equipment update when you swap your selected slot perhaps
).mapNotNull { (slot, stackIndex) ->
val slotIndex = p.playerScreenHandler.getSlotIndex(p.inventory, stackIndex).asInt
event.getOrNull(slotIndex)?.let {
Pair.of(slot, it)
}
}
if (updatedSlots.isNotEmpty())
publish(EquipmentUpdate(p, updatedSlots))
}
}
abstract val entity: Entity
data class AttributeUpdate(
override val entity: LivingEntity,
val attributes: List<EntityAttributesS2CPacket.Entry>,
) : EntityUpdateEvent()
data class TrackedDataUpdate(
override val entity: Entity,
val trackedValues: List<DataTracker.SerializedEntry<*>>,
) : EntityUpdateEvent()
data class EquipmentUpdate(
override val entity: Entity,
val newEquipment: List<Pair<EquipmentSlot, ItemStack>>,
) : EntityUpdateEvent()
// TODO: onEntityPassengersSet, onEntityAttach?, onEntityStatusEffect
}
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