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Implemented Totems, close #2198

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Totem usage can be detected using the MODIFIER_TOTEM constant of EntityDamageEvent.

This does not currently support using the totem in the offhand because offhand is not implemented yet.
This commit is contained in:
Dylan K. Taylor
2018-05-23 10:05:01 +01:00
parent 1c4dd4f280
commit acf29711c2
4 changed files with 73 additions and 1 deletions
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37
src/pocketmine/entity/Human.php
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@ -35,6 +35,7 @@ use pocketmine\inventory\PlayerInventory;
use pocketmine\item\Consumable;
use pocketmine\item\FoodSource;
use pocketmine\item\Item;
use pocketmine\item\Totem;
use pocketmine\level\Level;
use pocketmine\nbt\NBT;
use pocketmine\nbt\tag\ByteArrayTag;
@ -43,6 +44,7 @@ use pocketmine\nbt\tag\IntTag;
use pocketmine\nbt\tag\ListTag;
use pocketmine\nbt\tag\StringTag;
use pocketmine\network\mcpe\protocol\AddPlayerPacket;
use pocketmine\network\mcpe\protocol\EntityEventPacket;
use pocketmine\network\mcpe\protocol\LevelEventPacket;
use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
use pocketmine\network\mcpe\protocol\PlayerSkinPacket;
@ -673,6 +675,41 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
return $this->getNameTag();
}
public function applyDamageModifiers(EntityDamageEvent $source) : void{
parent::applyDamageModifiers($source);
$type = $source->getCause();
if($type !== EntityDamageEvent::CAUSE_SUICIDE and $type !== EntityDamageEvent::CAUSE_VOID
and $this->inventory->getItemInHand() instanceof Totem){ //TODO: check offhand as well (when it's implemented)
$compensation = $this->getHealth() - $source->getFinalDamage() - 1;
if($compensation < 0){
$source->setModifier($compensation, EntityDamageEvent::MODIFIER_TOTEM);
}
}
}
protected function applyPostDamageEffects(EntityDamageEvent $source) : void{
parent::applyPostDamageEffects($source);
$totemModifier = $source->getModifier(EntityDamageEvent::MODIFIER_TOTEM);
if($totemModifier < 0){ //Totem prevented death
$this->removeAllEffects();
$this->addEffect(new EffectInstance(Effect::getEffect(Effect::REGENERATION), 40 * 20, 1));
$this->addEffect(new EffectInstance(Effect::getEffect(Effect::FIRE_RESISTANCE), 40 * 20, 1));
$this->addEffect(new EffectInstance(Effect::getEffect(Effect::ABSORPTION), 5 * 20, 1));
$this->broadcastEntityEvent(EntityEventPacket::CONSUME_TOTEM);
$this->level->broadcastLevelEvent($this->add(0, $this->eyeHeight, 0), LevelEventPacket::EVENT_SOUND_TOTEM);
$hand = $this->inventory->getItemInHand();
if($hand instanceof Totem){
$hand->pop(); //Plugins could alter max stack size
$this->inventory->setItemInHand($hand);
}
}
}
public function getDrops() : array{
return array_merge(
$this->inventory !== null ? array_values($this->inventory->getContents()) : [],