BlockEntities: Support cloning self.

src/BlockEntities/BlockEntityWithItems.cpp

@@ -0,0 +1,72 @@
+// BlockEntityWithItems.cpp
+
+// Implements the cBlockEntityWithItems class representing a common ancestor for all block entities that have an ItemGrid
+
+
+
+
+
+#include "Globals.h"
+#include "BlockEntityWithItems.h"
+
+
+
+
+
+cBlockEntityWithItems::cBlockEntityWithItems(
+	BLOCKTYPE a_BlockType,
+	NIBBLETYPE a_BlockMeta,
+	int a_BlockX, int a_BlockY, int a_BlockZ,
+	int a_ItemGridWidth, int a_ItemGridHeight,
+	cWorld * a_World
+):
+	Super(a_BlockType, a_BlockMeta, a_BlockX, a_BlockY, a_BlockZ, a_World),
+	cBlockEntityWindowOwner(this),
+	m_Contents(a_ItemGridWidth, a_ItemGridHeight)
+{
+	m_Contents.AddListener(*this);
+}
+
+
+
+
+
+void cBlockEntityWithItems::Destroy(void)
+{
+	// Drop the contents as pickups:
+	ASSERT(m_World != nullptr);
+	cItems Pickups;
+	m_Contents.CopyToItems(Pickups);
+	m_Contents.Clear();
+	m_World->SpawnItemPickups(Pickups, m_PosX + 0.5, m_PosY + 0.5, m_PosZ + 0.5);  // Spawn in centre of block
+}
+
+
+
+
+
+void cBlockEntityWithItems::CopyFrom(const cBlockEntity & a_Src)
+{
+	Super::CopyFrom(a_Src);
+	auto & src = reinterpret_cast<const cBlockEntityWithItems &>(a_Src);
+	m_Contents.CopyFrom(src.m_Contents);
+}
+
+
+
+
+
+void cBlockEntityWithItems::OnSlotChanged(cItemGrid * a_Grid, int a_SlotNum)
+{
+	UNUSED(a_SlotNum);
+	ASSERT(a_Grid == &m_Contents);
+	if (m_World != nullptr)
+	{
+		if (GetWindow() != nullptr)
+		{
+			GetWindow()->BroadcastWholeWindow();
+		}
+
+		m_World->MarkChunkDirty(GetChunkX(), GetChunkZ());
+	}
+}