Spawning an Entity

In almost all cases, to spawn an entity, you need an EntityType, an Extent, and a Location to do so.

For example, let’s try to spawn a Creeper:

import com.google.common.base.Optional;
import org.spongepowered.api.data.key.Keys;
import org.spongepowered.api.entity.Entity;
import org.spongepowered.api.entity.EntityTypes;
import org.spongepowered.api.text.Texts;
import org.spongepowered.api.text.format.TextColors;
import org.spongepowered.api.world.Location;
import org.spongepowered.api.world.extent.Extent;

public void spawnEntity(Location location) {
    Extent extent = location.getExtent();
    // We need to create the entity
    Optional<Entity> optional = extent.createEntity(EntityTypes.CREEPER,
                                                    location.getPosition());
    if (optional.isPresent()) {
        // After this, we can use more API that relates to creeper
        Entity creeper = optional.get();
        // Here, we can use the handy Data API to simplify "setting" various
        // data onto the creeper, such as the explosive radius
        creeper.offer(Keys.EXPLOSIVE_RADIUS, 10);
        // Or display name
        creeper.offer(Keys.DISPLAY_NAME, Texts.of(TextColors.DARK_AQUA, "Inscrutable"));
        // Or even whether the creeper is "charged"
        creeper.offer(Keys.CREEPER_CHARGED, true);

        // Now we're actually spawning in the creeper into the world
        extent.spawnEntity(creeper);
    }
}

The code excerpt illustrated above will spawn a charged creeper with a higher than normal explosion radius at the given location.