Examples with StackFrame org.spongepowered.api.event.CauseStackManager.StackFrame used on opensource projects

Example 36 with StackFrame

use of org.spongepowered.api.event.CauseStackManager.StackFrame in project SpongeCommon by SpongePowered.

the class MixinWorldServer method spongeLoadEntities.

/**
 * @author gabizou - February 7th, 2016
 * @author gabizou - September 3rd, 2016 - Moved from MixinWorld since WorldServer overrides the method.
 *
 * This will short circuit all other patches such that we control the
 * entities being loaded by chunkloading and can throw our bulk entity
 * event. This will bypass Forge's hook for individual entity events,
 * but the SpongeModEventManager will still successfully throw the
 * appropriate event and cancel the entities otherwise contained.
 *
 * @param entities The entities being loaded
 * @param callbackInfo The callback info
 */
@Final
@Inject(method = "loadEntities", at = @At("HEAD"), cancellable = true)
private void spongeLoadEntities(Collection<net.minecraft.entity.Entity> entities, CallbackInfo callbackInfo) {
    if (entities.isEmpty()) {
        // just return, no entities to load!
        callbackInfo.cancel();
        return;
    }
    List<Entity> entityList = new ArrayList<>();
    for (net.minecraft.entity.Entity entity : entities) {
        // Make sure no entities load in invalid positions
        if (((IMixinBlockPos) entity.getPosition()).isInvalidYPosition()) {
            entity.setDead();
            continue;
        }
        if (this.canAddEntity(entity)) {
            entityList.add((Entity) entity);
        }
    }
    try (StackFrame frame = Sponge.getCauseStackManager().pushCauseFrame()) {
        Sponge.getCauseStackManager().addContext(EventContextKeys.SPAWN_TYPE, SpawnTypes.CHUNK_LOAD);
        Sponge.getCauseStackManager().pushCause(this);
        SpawnEntityEvent.ChunkLoad chunkLoad = SpongeEventFactory.createSpawnEntityEventChunkLoad(Sponge.getCauseStackManager().getCurrentCause(), Lists.newArrayList(entityList));
        SpongeImpl.postEvent(chunkLoad);
        if (!chunkLoad.isCancelled() && chunkLoad.getEntities().size() > 0) {
            for (Entity successful : chunkLoad.getEntities()) {
                this.loadedEntityList.add((net.minecraft.entity.Entity) successful);
                this.onEntityAdded((net.minecraft.entity.Entity) successful);
            }
        }
        // This prevents invisible entities from loading into the world and blocking the position.
        for (Entity entity : entityList) {
            if (!chunkLoad.getEntities().contains(entity)) {
                ((net.minecraft.world.World) (Object) this).removeEntityDangerously((net.minecraft.entity.Entity) entity);
            }
        }
        callbackInfo.cancel();
    }
}