Method OnNextBlock

src/Entities/ProjectileEntity.cpp:47–106

cCallbacks overrides:

	
	// cCallbacks overrides:
	virtual bool OnNextBlock(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, char a_EntryFace) override
	{
		/*
		// DEBUG:
		LOGD("Hit block %d:%d at {%d, %d, %d} face %d, %s (%s)",
			a_BlockType, a_BlockMeta,
			a_BlockX, a_BlockY, a_BlockZ, a_EntryFace,
			cBlockInfo::IsSolid(a_BlockType) ? "solid" : "non-solid",
			ItemToString(cItem(a_BlockType, 1, a_BlockMeta)).c_str()
		);
		*/
		
		if (cBlockInfo::IsSolid(a_BlockType))
		{
			// The projectile hit a solid block
			// Calculate the exact hit coords:
			cBoundingBox bb(a_BlockX, a_BlockX + 1, a_BlockY, a_BlockY + 1, a_BlockZ, a_BlockZ + 1);
			Vector3d Line1 = m_Projectile->GetPosition();
			Vector3d Line2 = Line1 + m_Projectile->GetSpeed();
			double LineCoeff = 0;
			eBlockFace Face;
			if (bb.CalcLineIntersection(Line1, Line2, LineCoeff, Face))
			{
				if (cPluginManager::Get()->CallHookProjectileHitBlock(*m_Projectile))
				{
					return false;
				}

				Vector3d Intersection = Line1 + m_Projectile->GetSpeed() * LineCoeff;
				m_Projectile->OnHitSolidBlock(Intersection, Face);
				return true;
			}
			else
			{
				LOGD("WEIRD! block tracer reports a hit, but BBox tracer doesn't. Ignoring the hit.");
			}
		}
		
		// Convey some special effects from special blocks:
		switch (a_BlockType)
		{
			case E_BLOCK_LAVA:
			case E_BLOCK_STATIONARY_LAVA:
			{
				m_Projectile->StartBurning(30);
				m_SlowdownCoeff = std::min(m_SlowdownCoeff, 0.9);  // Slow down to 0.9* the speed each tick when moving through lava
				break;
			}
			case E_BLOCK_WATER:
			case E_BLOCK_STATIONARY_WATER:
			{
				m_Projectile->StopBurning();
				m_SlowdownCoeff = std::min(m_SlowdownCoeff, 0.8);  // Slow down to 0.8* the speed each tick when moving through water
				break;
			}
		}  // switch (a_BlockType)
		
		// Continue tracing