Added splash potion functionality

src/Entities/EntityEffects.h

@@ -47,6 +47,10 @@ public:
 	/** Returns the distance modifier for affecting potency */
 	double GetDistanceModifier() { return m_DistanceModifier; }
 	
+	void SetIntensity(short a_Intensity)                { m_Intensity        = a_Intensity;        }
+	void SetUser(cPawn *a_User)                         { m_User             = a_User;             }
+	void SetDistanceModifier(double a_DistanceModifier) { m_DistanceModifier = a_DistanceModifier; }
+	
 	/**
 	 *  An empty entity effect
 	 */

src/Entities/Pawn.cpp

@@ -69,7 +69,8 @@ void cPawn::AddEntityEffect(cEntityEffect::eType a_EffectType, cEntityEffect a_E
 	}
 	
 	m_EntityEffects[a_EffectType] = a_Effect;
-	m_World->BroadcastEntityEffect(*this, a_EffectType, a_Effect.GetIntensity(), a_Effect.m_Ticks);
+	m_World->BroadcastEntityEffect(*this, a_EffectType, a_Effect.GetIntensity(),
+								   a_Effect.m_Ticks * a_Effect.GetDistanceModifier());
 }
 
 
@@ -114,7 +115,7 @@ void cPawn::HandleEntityEffects(cEntityEffect::eType a_EffectType, cEntityEffect
 		case cEntityEffect::efInstantHealth:
 		{
 			// Base heal = 6, doubles for every increase in intensity
-			Heal(6 * std::pow(2, a_Effect.GetIntensity()));
+			Heal(6 * std::pow(2, a_Effect.GetIntensity()) * a_Effect.GetDistanceModifier());
 			
 			// TODO: Harms undead
 			return;
@@ -123,7 +124,7 @@ void cPawn::HandleEntityEffects(cEntityEffect::eType a_EffectType, cEntityEffect
 		{
 			// Base damage = 6, doubles for every increase in intensity
 			int damage = 6 * std::pow(2, a_Effect.GetIntensity());
-			TakeDamage(dtPotionOfHarming, a_Effect.GetUser(), damage, 0);
+			TakeDamage(dtPotionOfHarming, a_Effect.GetUser(), damage * a_Effect.GetDistanceModifier(), 0);
 			
 			// TODO: Heals undead
 			return;

src/Entities/ProjectileEntity.cpp

@@ -18,7 +18,6 @@
 #include "ThrownEnderPearlEntity.h"
 #include "ExpBottleEntity.h"
 #include "ThrownSnowballEntity.h"
-#include "SplashPotionEntity.h"
 #include "FireChargeEntity.h"
 #include "FireworkEntity.h"
 #include "GhastFireballEntity.h"
@@ -252,7 +251,6 @@ cProjectileEntity * cProjectileEntity::Create(eKind a_Kind, cEntity * a_Creator,
 		case pkGhastFireball: return new cGhastFireballEntity   (a_Creator, a_X, a_Y, a_Z, Speed);
 		case pkFireCharge:    return new cFireChargeEntity      (a_Creator, a_X, a_Y, a_Z, Speed);
 		case pkExpBottle:     return new cExpBottleEntity       (a_Creator, a_X, a_Y, a_Z, Speed);
-		case pkSplashPotion:  return new cSplashPotionEntity    (a_Creator, a_X, a_Y, a_Z, Speed);
 		case pkWitherSkull:   return new cWitherSkullEntity     (a_Creator, a_X, a_Y, a_Z, Speed);
 		case pkFirework:
 		{

src/Entities/SplashPotionEntity.cpp

@@ -1,14 +1,17 @@
 #include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
 
 #include "SplashPotionEntity.h"
-#include "../World.h"
+#include "Player.h"
 
 
 
 
 
-cSplashPotionEntity::cSplashPotionEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed) :
+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_PotionName) :
-super(pkSplashPotion, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25)
+	super(pkSplashPotion, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25),
+	m_EntityEffectType(a_EntityEffectType),
+	m_EntityEffect(a_EntityEffect),
+	m_PotionName(a_PotionName)
 {
 	SetSpeed(a_Speed);
 }
@@ -19,7 +22,7 @@ super(pkSplashPotion, a_Creator, a_X, a_Y, a_Z, 0.25, 0.25)
 
 void cSplashPotionEntity::OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace)
 {
-	// TODO: Apply potion effect to entities nearby
+	Splash(a_HitPos);
 	Destroy();
 }
 
@@ -30,8 +33,51 @@ void cSplashPotionEntity::OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace
 void cSplashPotionEntity::OnHitEntity(cEntity & a_EntityHit, const Vector3d & a_HitPos)
 {
 	a_EntityHit.TakeDamage(dtRangedAttack, this, 0, 1);
-	
+	Splash(a_HitPos);
-	// TODO: Apply potion effect to entity and others nearby
-	
 	Destroy(true);
 }
+
+
+
+
+
+void cSplashPotionEntity::Splash(const Vector3d & a_HitPos)
+{
+	cSplashPotionCallback Callback(a_HitPos, m_EntityEffectType, m_EntityEffect);
+	m_World->ForEachPlayer(Callback);
+	// TODO: Should be for each pawn
+	
+	m_World->BroadcastSoundParticleEffect(2002, a_HitPos.x, a_HitPos.y, a_HitPos.z, m_PotionName);
+}
+
+
+
+
+
+cSplashPotionEntity::cSplashPotionCallback::cSplashPotionCallback(const Vector3d & a_HitPos, cEntityEffect::eType &a_EntityEffectType, cEntityEffect &a_EntityEffect):
+	m_HitPos(a_HitPos),
+	m_EntityEffectType(a_EntityEffectType),
+	m_EntityEffect(a_EntityEffect)
+{
+	
+}
+
+
+
+
+
+bool cSplashPotionEntity::cSplashPotionCallback::Item(cPlayer * a_Player)
+{
+	double distance_splash = (a_Player->GetPosition() - m_HitPos).Length();
+	if (distance_splash < 20)
+	{
+		// y = -0.25x + 1, where x is the distance from the player. Approximation for potion splash.
+		// TODO: better equation
+		double reduction = -0.25 * distance_splash + 1.0;
+		if (reduction < 0) reduction = 0;
+		
+		m_EntityEffect.SetDistanceModifier(reduction);
+		a_Player->AddEntityEffect(m_EntityEffectType, m_EntityEffect);
+	}
+	return false;
+}

src/Entities/SplashPotionEntity.h

@@ -5,7 +5,8 @@
 #pragma once
 
 #include "ProjectileEntity.h"
-
+#include "EntityEffects.h"
+#include "../World.h"
 
 
 
@@ -13,7 +14,7 @@
 // tolua_begin
 
 class cSplashPotionEntity :
-public cProjectileEntity
+	public cProjectileEntity
 {
 	typedef cProjectileEntity super;
 	
@@ -23,7 +24,7 @@ public:
 	
 	CLASS_PROTODEF(cSplashPotionEntity);
 	
-	cSplashPotionEntity(cEntity * a_Creator, double a_X, double a_Y, double a_Z, const Vector3d & a_Speed);
+	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_PotionName);
 	
 protected:
 	
@@ -31,4 +32,27 @@ protected:
 	virtual void OnHitSolidBlock(const Vector3d & a_HitPos, eBlockFace a_HitFace) override;
 	virtual void OnHitEntity    (cEntity & a_EntityHit, const Vector3d & a_HitPos) override;
 	
+	/** Splashes the potion, fires its particle effects and sounds
+	 *  @param a_HitPos     The position where the potion will splash
+	 */
+	void Splash(const Vector3d & a_HitPos);
+	
+	cEntityEffect::eType m_EntityEffectType;
+	cEntityEffect m_EntityEffect;
+	int m_PotionName;
+	
+	class cSplashPotionCallback :
+		public cPlayerListCallback
+	{
+	public:
+		cSplashPotionCallback(const Vector3d & a_HitPos, cEntityEffect::eType &a_EntityEffectType, cEntityEffect &a_EntityEffect);
+		
+		virtual bool Item(cPlayer * a_Player) override;
+		
+	private:
+		const Vector3d &m_HitPos;
+		cEntityEffect::eType &m_EntityEffectType;
+		cEntityEffect &m_EntityEffect;
+	};
+	
 } ; // tolua_export

src/Items/ItemPotion.h

@@ -2,12 +2,18 @@
 #pragma once
 
 #include "../Entities/EntityEffects.h"
+#include "../Entities/SplashPotionEntity.h"
 
 class cItemPotionHandler:
-public cItemHandler
+	public cItemHandler
 {
 	typedef cItemHandler super;
 	
+	int GetPotionName(short a_ItemDamage)
+	{
+		return a_ItemDamage & 63;
+	}
+	
 	cEntityEffect::eType GetEntityEffectType(short a_ItemDamage)
 	{
 		// Potion effect bits are different from entity effect values
@@ -118,6 +124,34 @@ public:
 	
 	virtual bool OnItemUse(cWorld * a_World, cPlayer * a_Player, const cItem & a_Item, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_Dir) override
 	{
+		Vector3d Speed = a_Player->GetLookVector() * 10;
+		
+		short potion_damage = a_Item.m_ItemDamage;
+		cProjectileEntity * Projectile = new cSplashPotionEntity(a_Player,
+																 (double)a_BlockX,
+																 (double)a_BlockY,
+																 (double)a_BlockZ,
+																 &Speed,
+																 GetEntityEffectType(potion_damage),
+																 cEntityEffect(GetEntityEffectDuration(potion_damage),
+																			   GetEntityEffectIntensity(potion_damage),
+																			   a_Player),
+																 GetPotionName(potion_damage));
+		if (Projectile == NULL)
+		{
+			return false;
+		}
+		if (!Projectile->Initialize(*a_World))
+		{
+			delete Projectile;
+			return false;
+		}
+		
+		if (!a_Player->IsGameModeCreative())
+		{
+			a_Player->GetInventory().RemoveOneEquippedItem();
+		}
+		
 		// Called when potion is a splash potion
 		return true;
 	}