85 lines
3.1 KiB
Java
85 lines
3.1 KiB
Java
package net.citizensnpcs.npc;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.util.Map;
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import javax.xml.stream.Location;
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import net.citizensnpcs.api.abstraction.World;
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import net.citizensnpcs.api.npc.NPC;
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import net.minecraft.server.EntityLiving;
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import net.minecraft.server.EntityTypes;
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import org.bukkit.craftbukkit.CraftWorld;
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@SuppressWarnings("unchecked")
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public abstract class CitizensMobNPC extends CitizensNPC {
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private final Constructor<? extends EntityLiving> constructor;
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protected CitizensMobNPC(int id, String name, Class<? extends EntityLiving> clazz) {
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super(id, name);
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try {
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this.constructor = clazz.getConstructor(World.class, NPC.class);
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} catch (Exception ex) {
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throw new IllegalStateException("unable to find an entity constructor");
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}
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if (!classToInt.containsKey(clazz))
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registerEntityClass(clazz);
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}
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private EntityLiving createEntityFromClass(World world) {
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try {
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return constructor.newInstance(world, this);
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} catch (Exception ex) {
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ex.printStackTrace();
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return null;
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}
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}
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@Override
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protected EntityLiving createHandle(Location loc) {
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EntityLiving entity = createEntityFromClass(((CraftWorld) loc.getWorld()).getHandle());
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entity.setPositionRotation(loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch());
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// entity.onGround isn't updated right away - we approximate here so
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// that things like pathfinding still work *immediately* after spawn.
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org.bukkit.Material beneath = loc.getBlock().getRelative(BlockFace.DOWN).getType();
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if (beneath.isBlock()) {
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Block block = Block.byId[beneath.getId()];
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if (block != null && block.material != null) {
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entity.onGround = block.material.isSolid();
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}
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}
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return entity;
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}
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private static Map<Class<? extends Entity>, Integer> classToInt;
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private static Map<Integer, Class<? extends Entity>> intToClass;
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private static void registerEntityClass(Class<? extends Entity> clazz) {
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Class<?> search = clazz;
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while ((search = search.getSuperclass()) != null && Entity.class.isAssignableFrom(search)) {
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if (!classToInt.containsKey(search))
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continue;
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int code = classToInt.get(search);
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intToClass.put(code, clazz);
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classToInt.put(clazz, code);
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return;
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}
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throw new IllegalArgumentException("unable to find valid entity superclass");
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}
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static {
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try {
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Field field = EntityTypes.class.getDeclaredField("d");
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field.setAccessible(true);
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intToClass = (Map<Integer, Class<? extends Entity>>) field.get(null);
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field = EntityTypes.class.getDeclaredField("e");
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field.setAccessible(true);
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classToInt = (Map<Class<? extends Entity>, Integer>) field.get(null);
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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}
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} |