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Diffstat (limited to '')
-rw-r--r-- | src/Entities/SplashPotionEntity.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/Entities/SplashPotionEntity.cpp b/src/Entities/SplashPotionEntity.cpp new file mode 100644 index 000000000..6d874e957 --- /dev/null +++ b/src/Entities/SplashPotionEntity.cpp @@ -0,0 +1,133 @@ +#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules + +#include "SplashPotionEntity.h" +#include "Pawn.h" +#include "../ClientHandle.h" + + + + + +/// Converts an angle in radians into a byte representation used by the network protocol +#define ANGLE_TO_PROTO(X) (Byte)(X * 255 / 360) + +//////////////////////////////////////////////////////////////////////////////// +// cSplashPotionEntityCallback: + +/** Used to distribute the splashed potion effect among nearby entities */ +class cSplashPotionCallback : + public cEntityCallback +{ +public: + /** Creates the callback. + @param a_HitPos The position where the splash potion has splashed + @param a_EntityEffectType The effect type of the potion + @param a_EntityEffect The effect description */ + cSplashPotionCallback(const Vector3d & a_HitPos, cEntityEffect::eType a_EntityEffectType, const cEntityEffect & a_EntityEffect) : + m_HitPos(a_HitPos), + m_EntityEffectType(a_EntityEffectType), + m_EntityEffect(a_EntityEffect) + { + } + + /** Called by cWorld::ForEachEntity(), adds the stored entity effect to the entity, if it is close enough. */ + virtual bool Item(cEntity * a_Entity) override + { + if (!a_Entity->IsPawn()) + { + // Not an entity that can take effects + return false; + } + + double SplashDistance = (a_Entity->GetPosition() - m_HitPos).Length(); + if (SplashDistance >= 20) + { + // Too far away + return false; + } + + // y = -0.25x + 1, where x is the distance from the player. Approximation for potion splash. + // TODO: better equation + double Reduction = -0.25 * SplashDistance + 1.0; + Reduction = std::max(Reduction, 0.0); + + ((cPawn *) a_Entity)->AddEntityEffect(m_EntityEffectType, m_EntityEffect.GetDuration(), m_EntityEffect.GetIntensity(), Reduction); + return false; + } + +private: + const Vector3d & m_HitPos; + cEntityEffect::eType m_EntityEffectType; + const cEntityEffect & m_EntityEffect; +}; + + + + + +//////////////////////////////////////////////////////////////////////////////// +// cSplashPotionEntity: + +cSplashPotionEntity::cSplashPotionEntity( + cEntity * a_Creator, + double a_X, double a_Y, double a_Z, + const Vector3d & a_Speed, + cEntityEffect::eType a_EntityEffectType, + cEntityEffect a_EntityEffect, + int a_PotionColor +) : + super(pkSplashPotion, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25), + m_EntityEffectType(a_EntityEffectType), + m_EntityEffect(a_EntityEffect), + m_PotionColor(a_PotionColor), + m_DestroyTimer(-1) +{ + SetSpeed(a_Speed); +} + + + + + +void cSplashPotionEntity::OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) +{ + Splash(a_HitPos); + m_DestroyTimer = 2; +} + + + + + +void cSplashPotionEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos) +{ + a_EntityHit.TakeDamage(dtRangedAttack, this, 0, 1); + Splash(a_HitPos); + m_DestroyTimer = 5; +} + + + + + +void cSplashPotionEntity::Splash(const Vector3d & a_HitPos) +{ + cSplashPotionCallback Callback(a_HitPos, m_EntityEffectType, m_EntityEffect); + m_World->ForEachEntity(Callback); + + m_World->BroadcastSoundParticleEffect(2002, (int)floor(a_HitPos.x), (int)floor(a_HitPos.y), (int)floor(a_HitPos.z), m_PotionColor); +} + + + + + +void cSplashPotionEntity::SpawnOn(cClientHandle & a_Client) +{ + a_Client.SendSpawnObject(*this, 73, m_PotionColor, ANGLE_TO_PROTO(GetYaw()), ANGLE_TO_PROTO(GetPitch())); + a_Client.SendEntityMetadata(*this); +} + + + + |