From 3d044d2dde2e348dc5c9f6a7fe44e914ef501878 Mon Sep 17 00:00:00 2001
From: Aiden Neill <aidenneill@gmail.com>
Date: Wed, 25 Nov 2020 10:56:55 -0700
Subject: Added magma block contact damage (#5055)

* Added magma block contact damage
* Fireproof entities do not take damage from magma
* Fire resistance prevents magma damage
* No magma damage when hovering over magma block
---
 src/Entities/Entity.cpp | 53 +++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 49 insertions(+), 4 deletions(-)

(limited to 'src/Entities/Entity.cpp')

diff --git a/src/Entities/Entity.cpp b/src/Entities/Entity.cpp
index 34d5bf6e5..579541dd3 100644
--- a/src/Entities/Entity.cpp
+++ b/src/Entities/Entity.cpp
@@ -147,6 +147,7 @@ bool cEntity::Initialize(OwnedEntity a_Self, cWorld & a_EntityWorld)
 	);
 	*/
 
+
 	ASSERT(m_World == nullptr);
 	ASSERT(GetParentChunk() == nullptr);
 	SetWorld(&a_EntityWorld);
@@ -628,6 +629,7 @@ bool cEntity::ArmorCoversAgainst(eDamageType a_DamageType)
 		case dtAttack:
 		case dtArrowAttack:
 		case dtCactusContact:
+		case dtMagmaContact:
 		case dtLavaContact:
 		case dtFireContact:
 		case dtExplosion:
@@ -656,7 +658,7 @@ float cEntity::GetEnchantmentCoverAgainst(const cEntity * a_Attacker, eDamageTyp
 			TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchProtection)) * 1;
 		}
 
-		if ((a_DamageType == dtBurning) || (a_DamageType == dtFireContact) || (a_DamageType == dtLavaContact))
+		if ((a_DamageType == dtBurning) || (a_DamageType == dtFireContact) || (a_DamageType == dtLavaContact) || (a_DamageType == dtMagmaContact))
 		{
 			TotalEPF += static_cast<int>(Item.m_Enchantments.GetLevel(cEnchantments::enchFireProtection)) * 2;
 		}
@@ -899,6 +901,23 @@ void cEntity::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 			DetectCacti();
 		}
 
+		// Handle magma block damage
+		if
+		(
+			IsOnGround() &&
+			(
+				(IsMob() && !static_cast<cPawn *>(this)->IsFireproof()) ||
+				(
+					IsPlayer() && !((static_cast<cPlayer *>(this))->IsGameModeCreative() || (static_cast<cPlayer *>(this))->IsGameModeSpectator())
+					&& !static_cast<cPlayer *>(this)->IsFireproof()
+					&& !static_cast<cPlayer *>(this)->HasEntityEffect(cEntityEffect::effFireResistance)
+				)
+			)
+		)
+		{
+			DetectMagma();
+		}
+
 		// Handle drowning:
 		if (IsMob() || IsPlayer())
 		{
@@ -1314,6 +1333,35 @@ void cEntity::DetectCacti(void)
 
 
 
+void cEntity::DetectMagma(void)
+{
+	int MinX = FloorC(GetPosX() - m_Width / 2);
+	int MaxX = FloorC(GetPosX() + m_Width / 2);
+	int MinZ = FloorC(GetPosZ() - m_Width / 2);
+	int MaxZ = FloorC(GetPosZ() + m_Width / 2);
+	int MinY = Clamp(POSY_TOINT - 1, 0, cChunkDef::Height - 1);
+	int MaxY = Clamp(FloorC(GetPosY() + m_Height), 0, cChunkDef::Height - 1);
+
+	for (int x = MinX; x <= MaxX; x++)
+	{
+		for (int z = MinZ; z <= MaxZ; z++)
+		{
+			for (int y = MinY; y <= MaxY; y++)
+			{
+				if (GetWorld()->GetBlock(x, y, z) == E_BLOCK_MAGMA)
+				{
+					TakeDamage(dtMagmaContact, nullptr, 1, 0);
+					return;
+				}
+			}  // for y
+		}  // for z
+	}  // for x
+}
+
+
+
+
+
 bool cEntity::DetectPortal()
 {
 	// If somebody scheduled a world change, do nothing.
@@ -2334,6 +2382,3 @@ float cEntity::GetExplosionExposureRate(Vector3d a_ExplosionPosition, float a_Ex
 		return 0;
 	}
 }
-
-
-
-- 
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