/*
* Copyright 2013 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.world.block.entity;
import org.terasology.audio.AudioManager;
import org.terasology.audio.StaticSound;
import org.terasology.audio.events.PlaySoundEvent;
import org.terasology.entitySystem.entity.EntityBuilder;
import org.terasology.entitySystem.entity.EntityManager;
import org.terasology.entitySystem.entity.EntityRef;
import org.terasology.entitySystem.event.EventPriority;
import org.terasology.entitySystem.event.ReceiveEvent;
import org.terasology.entitySystem.systems.BaseComponentSystem;
import org.terasology.entitySystem.systems.RegisterMode;
import org.terasology.entitySystem.systems.RegisterSystem;
import org.terasology.logic.health.BeforeDamagedEvent;
import org.terasology.logic.health.DoDestroyEvent;
import org.terasology.logic.health.FullHealthEvent;
import org.terasology.logic.health.OnDamagedEvent;
import org.terasology.logic.inventory.InventoryManager;
import org.terasology.logic.inventory.PickupBuilder;
import org.terasology.logic.location.LocationComponent;
import org.terasology.logic.particles.BlockParticleEffectComponent;
import org.terasology.math.Vector3i;
import org.terasology.physics.events.ImpulseEvent;
import org.terasology.registry.In;
import org.terasology.utilities.random.FastRandom;
import org.terasology.utilities.random.Random;
import org.terasology.world.WorldProvider;
import org.terasology.world.block.Block;
import org.terasology.world.block.BlockComponent;
import org.terasology.world.block.BlockManager;
import org.terasology.world.block.BlockSounds;
import org.terasology.world.block.entity.damage.BlockDamageModifierComponent;
import org.terasology.world.block.entity.damage.BlockDamagedComponent;
import org.terasology.world.block.family.BlockFamily;
import org.terasology.world.block.items.BlockItemFactory;
import org.terasology.world.block.items.OnBlockToItem;
import org.terasology.world.block.regions.ActAsBlockComponent;
import org.terasology.world.block.regions.BlockRegionComponent;
import javax.vecmath.Vector3f;
/**
* Event handler for events affecting block entities
*
* @author Immortius <immortius@gmail.com>
*/
@RegisterSystem
public class BlockEntitySystem extends BaseComponentSystem {
@In
private WorldProvider worldProvider;
@In
private EntityManager entityManager;
@In
private AudioManager audioManager;
@In
private InventoryManager inventoryManager;
private BlockItemFactory blockItemFactory;
private PickupBuilder pickupBuilder;
private Random random;
@Override
public void initialise() {
blockItemFactory = new BlockItemFactory(entityManager);
pickupBuilder = new PickupBuilder(entityManager);
random = new FastRandom();
}
@ReceiveEvent(priority = EventPriority.PRIORITY_LOW)
public void doDestroy(DoDestroyEvent event, EntityRef entity, ActAsBlockComponent blockComponent) {
commonDestroyed(event, entity, blockComponent.block.getArchetypeBlock());
}
@ReceiveEvent(priority = EventPriority.PRIORITY_LOW)
public void doDestroy(DoDestroyEvent event, EntityRef entity, BlockComponent blockComponent) {
commonDestroyed(event, entity, blockComponent.getBlock());
worldProvider.setBlock(blockComponent.getPosition(), BlockManager.getAir());
}
@ReceiveEvent(priority = EventPriority.PRIORITY_TRIVIAL)
public void defaultDropsHandling(CreateBlockDropsEvent event, EntityRef entity, BlockComponent blockComponent) {
Vector3i location = blockComponent.getPosition();
commonDefaultDropsHandling(event, entity, location, blockComponent.getBlock());
}
@ReceiveEvent(priority = EventPriority.PRIORITY_TRIVIAL)
public void defaultDropsHandling(CreateBlockDropsEvent event, EntityRef entity, ActAsBlockComponent blockComponent, LocationComponent locationComp) {
Vector3i location = new Vector3i(locationComp.getWorldPosition(), 0.5f);
commonDefaultDropsHandling(event, entity, location, blockComponent.block.getArchetypeBlock());
}
@ReceiveEvent(priority = EventPriority.PRIORITY_TRIVIAL)
public void defaultDropsHandling(CreateBlockDropsEvent event, EntityRef entity, ActAsBlockComponent blockComponent, BlockRegionComponent blockRegion) {
if (!entity.hasComponent(LocationComponent.class)) {
Vector3i location = new Vector3i(blockRegion.region.center(), 0.5f);
commonDefaultDropsHandling(event, entity, location, blockComponent.block.getArchetypeBlock());
}
}
public void commonDefaultDropsHandling(CreateBlockDropsEvent event, EntityRef entity, Vector3i location, Block block) {
BlockDamageModifierComponent blockDamageModifierComponent = event.getDamageType().getComponent(BlockDamageModifierComponent.class);
float chanceOfBlockDrop = 1;
if (blockDamageModifierComponent != null) {
chanceOfBlockDrop = 1 - blockDamageModifierComponent.blockAnnihilationChance;
}
if (random.nextFloat() < chanceOfBlockDrop) {
EntityRef item = blockItemFactory.newInstance(block.getBlockFamily(), 1);
entity.send(new OnBlockToItem(item));
if (shouldDropToWorld(event, block, blockDamageModifierComponent, item)) {
processDropping(item, location);
}
}
}
private boolean shouldDropToWorld(CreateBlockDropsEvent event, Block block, BlockDamageModifierComponent blockDamageModifierComponent, EntityRef item) {
return !isDirectPickup(block, blockDamageModifierComponent) || !giveItem(event, item);
}
private boolean giveItem(CreateBlockDropsEvent event, EntityRef item) {
return inventoryManager.giveItem(event.getInstigator(), item, item);
}
private boolean isDirectPickup(Block block, BlockDamageModifierComponent blockDamageModifierComponent) {
return block.isDirectPickup() || (blockDamageModifierComponent != null && blockDamageModifierComponent.directPickup);
}
private void commonDestroyed(DoDestroyEvent event, EntityRef entity, Block block) {
entity.send(new CreateBlockDropsEvent(event.getInstigator(), event.getDirectCause(), event.getDamageType()));
BlockDamageModifierComponent blockDamageModifierComponent = event.getDamageType().getComponent(BlockDamageModifierComponent.class);
// TODO: Configurable via block definition
if (blockDamageModifierComponent == null || !blockDamageModifierComponent.skipPerBlockEffects) {
BlockSounds sounds = block.getSounds();
if (!sounds.getDestroySounds().isEmpty()) {
StaticSound sound = random.nextItem(sounds.getDestroySounds());
entity.send(new PlaySoundEvent(sound, 0.6f));
}
}
}
private void processDropping(EntityRef item, Vector3i location) {
EntityRef pickup = pickupBuilder.createPickupFor(item, location.toVector3f(), 60);
pickup.send(new ImpulseEvent(random.nextVector3f(30.0f)));
}
@ReceiveEvent
public void beforeDamaged(BeforeDamagedEvent event, EntityRef blockEntity, BlockComponent blockComp) {
if (!blockComp.getBlock().isDestructible()) {
event.consume();
}
}
@ReceiveEvent
public void beforeDamaged(BeforeDamagedEvent event, EntityRef blockEntity, ActAsBlockComponent blockComp) {
if (!blockComp.block.getArchetypeBlock().isDestructible()) {
event.consume();
}
}
@ReceiveEvent(components = {BlockDamagedComponent.class})
public void onRepaired(FullHealthEvent event, EntityRef entity) {
entity.removeComponent(BlockDamagedComponent.class);
}
@ReceiveEvent
public void onDamaged(OnDamagedEvent event, EntityRef entity, BlockComponent blockComponent, LocationComponent locComp) {
onDamagedCommon(event, entity, blockComponent.getBlock().getBlockFamily(), locComp.getWorldPosition());
if (!entity.hasComponent(BlockDamagedComponent.class)) {
entity.addComponent(new BlockDamagedComponent());
}
}
@ReceiveEvent
public void onDamaged(OnDamagedEvent event, EntityRef entity, ActAsBlockComponent blockComponent, LocationComponent locComp) {
onDamagedCommon(event, entity, blockComponent.block, locComp.getWorldPosition());
}
public void onDamagedCommon(OnDamagedEvent event, EntityRef entity, BlockFamily blockFamily, Vector3f location) {
BlockDamageModifierComponent blockDamageSettings = event.getType().getComponent(BlockDamageModifierComponent.class);
boolean skipDamageEffects = false;
if (blockDamageSettings != null) {
skipDamageEffects = blockDamageSettings.skipPerBlockEffects;
}
if (!skipDamageEffects) {
onPlayBlockDamageCommon(blockFamily, location);
}
}
private void onPlayBlockDamageCommon(BlockFamily family, Vector3f location) {
EntityBuilder builder = entityManager.newBuilder("engine:defaultBlockParticles");
builder.getComponent(LocationComponent.class).setWorldPosition(location);
builder.getComponent(BlockParticleEffectComponent.class).blockType = family;
builder.build();
if (family.getArchetypeBlock().isDebrisOnDestroy()) {
EntityBuilder dustBuilder = entityManager.newBuilder("engine:dustEffect");
dustBuilder.getComponent(LocationComponent.class).setWorldPosition(location);
dustBuilder.build();
}
BlockSounds sounds = family.getArchetypeBlock().getSounds();
if (!sounds.getDigSounds().isEmpty()) {
StaticSound sound = random.nextItem(sounds.getDigSounds());
audioManager.playSound(sound, location);
}
}
@ReceiveEvent(netFilter = RegisterMode.AUTHORITY)
public void beforeDamage(BeforeDamagedEvent event, EntityRef entity, BlockComponent blockComp) {
beforeDamageCommon(event, blockComp.getBlock());
}
@ReceiveEvent(netFilter = RegisterMode.AUTHORITY)
public void beforeDamage(BeforeDamagedEvent event, EntityRef entity, ActAsBlockComponent blockComp) {
beforeDamageCommon(event, blockComp.block.getArchetypeBlock());
}
private void beforeDamageCommon(BeforeDamagedEvent event, Block block) {
if (event.getDamageType() != null) {
BlockDamageModifierComponent blockDamage = event.getDamageType().getComponent(BlockDamageModifierComponent.class);
if (blockDamage != null) {
BlockFamily blockFamily = block.getBlockFamily();
for (String category : blockFamily.getCategories()) {
if (blockDamage.materialDamageMultiplier.containsKey(category)) {
event.multiply(blockDamage.materialDamageMultiplier.get(category));
}
}
}
}
}
}