166 lines
3.5 KiB
C++
166 lines
3.5 KiB
C++
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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
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#include "Chunk.h"
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#include "Enderman.h"
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#include "../Entities/Player.h"
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#include "../LineBlockTracer.h"
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////////////////////////////////////////////////////////////////////////////////
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// cPlayerLookCheck
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class cPlayerLookCheck
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{
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public:
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cPlayerLookCheck(Vector3d a_EndermanHeadPosition, int a_SightDistance) :
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m_Player(nullptr),
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m_EndermanHeadPosition(a_EndermanHeadPosition),
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m_SightDistance(a_SightDistance)
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{
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}
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bool operator () (cPlayer & a_Player)
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{
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// Don't check players who cannot be targeted
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if (!a_Player.CanMobsTarget())
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{
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return false;
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}
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const auto PlayerHeadPosition = a_Player.GetPosition().addedY(a_Player.GetHeight());
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const auto Direction = m_EndermanHeadPosition - PlayerHeadPosition;
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// Don't check players who are more than SightDistance (64) blocks away:
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if (Direction.Length() > m_SightDistance)
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{
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return false;
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}
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// Don't check if the player has a pumpkin on his head:
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if (a_Player.GetEquippedHelmet().m_ItemType == E_BLOCK_PUMPKIN)
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{
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return false;
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}
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const auto LookVector = a_Player.GetLookVector(); // Note: ||LookVector|| is always 1.
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const auto Cosine = Direction.Dot(LookVector) / Direction.Length(); // a.b / (||a|| * ||b||)
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// If the player's crosshair is within 5 degrees of the enderman, it counts as looking:
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if ((Cosine < std::cos(0.09)) || (Cosine > std::cos(0))) // 0.09 rad ~ 5 degrees
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{
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return false;
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}
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// TODO: Check if endermen are angered through water in Vanilla
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if (!cLineBlockTracer::LineOfSightTrace(*a_Player.GetWorld(), m_EndermanHeadPosition, PlayerHeadPosition, cLineBlockTracer::losAirWater))
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{
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// No direct line of sight
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return false;
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}
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m_Player = &a_Player;
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return true;
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}
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cPlayer * GetPlayer(void) const { return m_Player; }
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protected:
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cPlayer * m_Player;
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Vector3d m_EndermanHeadPosition;
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int m_SightDistance;
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} ;
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cEnderman::cEnderman(void) :
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Super("Enderman", mtEnderman, "entity.endermen.hurt", "entity.endermen.death", "entity.endermen.ambient", 0.6f, 2.9f),
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m_bIsScreaming(false),
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m_CarriedBlock(E_BLOCK_AIR),
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m_CarriedMeta(0)
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{
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}
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void cEnderman::GetDrops(cItems & a_Drops, cEntity * a_Killer)
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{
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unsigned int LootingLevel = 0;
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if (a_Killer != nullptr)
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{
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LootingLevel = a_Killer->GetEquippedWeapon().m_Enchantments.GetLevel(cEnchantments::enchLooting);
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}
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AddRandomDropItem(a_Drops, 0, 1 + LootingLevel, E_ITEM_ENDER_PEARL);
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}
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void cEnderman::CheckEventSeePlayer(cChunk & a_Chunk)
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{
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if (GetTarget() != nullptr)
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{
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return;
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}
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cPlayerLookCheck Callback(GetPosition().addedY(GetHeight()), m_SightDistance);
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if (m_World->ForEachPlayer(Callback))
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{
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return;
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}
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ASSERT(Callback.GetPlayer() != nullptr);
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// Target the player:
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cAggressiveMonster::EventSeePlayer(Callback.GetPlayer(), a_Chunk);
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m_bIsScreaming = true;
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GetWorld()->BroadcastEntityMetadata(*this);
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}
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void cEnderman::EventLosePlayer()
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{
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Super::EventLosePlayer();
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m_bIsScreaming = false;
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GetWorld()->BroadcastEntityMetadata(*this);
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}
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void cEnderman::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
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{
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Super::Tick(a_Dt, a_Chunk);
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if (!IsTicking())
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{
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// The base class tick destroyed us
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return;
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}
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PREPARE_REL_AND_CHUNK(GetPosition().Floor(), a_Chunk);
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if (!RelSuccess)
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{
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return;
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}
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// Take damage when wet:
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if (IsInWater() || Chunk->IsWeatherWetAt(Rel))
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{
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EventLosePlayer();
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TakeDamage(dtEnvironment, nullptr, 1, 0);
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// TODO teleport to a safe location
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}
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}
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