Added music disc drops for Creepers

Minor Mob bugfixes

Author: BrentDaMage

source/world/entity/Creeper.cpp

@@ -46,7 +46,10 @@ void Creeper::die(Entity* pCulprit)
 {
 	Monster::die(pCulprit);
 
-	// @NOTE: Disc dropping not implemented yet
+	if (pCulprit->getDescriptor().isType(EntityType::SKELETON))
+	{
+		spawnAtLocation(Item::record_01->m_itemID + m_random.nextInt(2), 1);
+	}
 }
 
 void Creeper::checkHurtTarget(Entity* pEnt, float f)

source/world/entity/Mob.cpp

@@ -671,14 +671,23 @@ void Mob::lookAt(Entity* pEnt, float a3, float a4)
 	float diffX = pEnt->m_pos.x - m_pos.x;
 	float diffZ = pEnt->m_pos.z - m_pos.z;
 
-	float q1 = (pEnt->m_hitbox.min.y + pEnt->m_hitbox.max.y) / 2 - (m_pos.y + getHeadHeight());
+	float q1;
+	if (pEnt->getDescriptor().hasCategory(EntityCategories::MOB))
+	{
+		Mob* pMob = (Mob*)pEnt;
+		q1 = pMob->m_pos.y + pMob->getHeadHeight() - (m_pos.y + getHeadHeight());
+	}
+	else
+	{
+		q1 = (pEnt->m_hitbox.min.y + pEnt->m_hitbox.max.y) / 2 - (m_pos.y + getHeadHeight());
+	}
 	float p1 = Mth::sqrt(diffX * diffX + diffZ * diffZ);
 
 	float x1 = atan2f(diffZ, diffX);
 	float x2 = atan2f(q1, p1);
 
-	setRot(Vec2(-rotlerp(m_rot.y, x2 * 180.0f / float(M_PI), a4),
-	              rotlerp(m_rot.x, x1 * 180.0f / float(M_PI) - 90.0f, a3)));
+	setRot(Vec2(-rotlerp(m_rot.x, x2 * 180.0f / float(M_PI), a4),
+	              rotlerp(m_rot.y, x1 * 180.0f / float(M_PI) - 90.0f, a3)));
 }
 
 bool Mob::canSpawn()