From: Kahrl <kahrl@gmx.net>
Date: Sat, 21 Jan 2012 20:21:41 +0000 (+0100)
Subject: Inventory menu (with dragging) improved. Crafting is now handled via a IACTION_CRAFT... 
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=1efdc36b22532807d21a0beac94524e3eacfe7bc;p=zefram%2Fminetest%2Fminetest_engine.git

Inventory menu (with dragging) improved. Crafting is now handled via a IACTION_CRAFT inventory action.
---

diff --git a/src/game.cpp b/src/game.cpp
index 055320a8..47a0e6af 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1310,7 +1310,7 @@ void the_game(
 					"list", inventoryloc, "craft",
 					v2s32(3, 0), v2s32(3, 3)));
 			draw_spec.push_back(GUIInventoryMenu::DrawSpec(
-					"list", inventoryloc, "craftresult",
+					"list", inventoryloc, "craftpreview",
 					v2s32(7, 1), v2s32(1, 1)));
 
 			menu->setDrawSpec(draw_spec);
diff --git a/src/guiInventoryMenu.cpp b/src/guiInventoryMenu.cpp
index 6e46bd49..a4b16b25 100644
--- a/src/guiInventoryMenu.cpp
+++ b/src/guiInventoryMenu.cpp
@@ -133,6 +133,8 @@ GUIInventoryMenu::GUIInventoryMenu(gui::IGUIEnvironment* env,
 	m_gamedef(gamedef)
 {
 	m_selected_item = NULL;
+	m_selected_amount = 0;
+	m_selected_dragging = false;
 	m_tooltip_element = NULL;
 }
 
@@ -317,28 +319,17 @@ void GUIInventoryMenu::drawList(const ListDrawSpec &s, int phase)
 			}
 		}
 
-		if(phase == 1 && !item.empty())
+		if(phase == 1)
 		{
-			// Draw item at the normal position if
-			// - the item is not being dragged or
-			// /*- the item is in the crafting result slot*/
-			if(!selected /*|| s.listname == "craftresult"*/)
+			// Draw item stack
+			if(selected)
 			{
-				drawItemStack(driver, font, item,
-						rect, &AbsoluteClippingRect, m_gamedef);
+				item.takeItem(m_selected_amount);
 			}
-		}
-
-		if(phase ==2 && !item.empty())
-		{
-			// Draw dragged item
-			if(selected)
+			if(!item.empty())
 			{
-				v2s32 offset = m_pointer - rect.getCenter();
-				rect.UpperLeftCorner += offset;
-				rect.LowerRightCorner += offset;
 				drawItemStack(driver, font, item,
-						rect, NULL, m_gamedef);
+						rect, &AbsoluteClippingRect, m_gamedef);
 			}
 
 			// Draw tooltip
@@ -359,12 +350,38 @@ void GUIInventoryMenu::drawList(const ListDrawSpec &s, int phase)
 						core::dimension2d<s32>(tooltip_width, tooltip_height)));
 			}
 		}
-
 	}
 }
 
+void GUIInventoryMenu::drawSelectedItem()
+{
+	if(!m_selected_item)
+		return;
+
+	video::IVideoDriver* driver = Environment->getVideoDriver();
+
+	// Get font
+	gui::IGUIFont *font = NULL;
+	gui::IGUISkin* skin = Environment->getSkin();
+	if (skin)
+		font = skin->getFont();
+	
+	Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
+	assert(inv);
+	InventoryList *list = inv->getList(m_selected_item->listname);
+	assert(list);
+	ItemStack stack = list->getItem(m_selected_item->i);
+	stack.count = m_selected_amount;
+
+	core::rect<s32> imgrect(0,0,imgsize.X,imgsize.Y);
+	core::rect<s32> rect = imgrect + (m_pointer - imgrect.getCenter());
+	drawItemStack(driver, font, stack, rect, NULL, m_gamedef);
+}
+
 void GUIInventoryMenu::drawMenu()
 {
+	updateSelectedItem();
+
 	gui::IGUISkin* skin = Environment->getSkin();
 	if (!skin)
 		return;
@@ -378,22 +395,93 @@ void GUIInventoryMenu::drawMenu()
 	/*
 		Draw items
 		Phase 0: Item slot rectangles
-		Phase 1: Item images
-		Phase 2: Dragged item image; tooltip
+		Phase 1: Item images; prepare tooltip
 	*/
 	
-	for(int phase=0; phase<=2; phase++)
+	for(int phase=0; phase<=1; phase++)
 	for(u32 i=0; i<m_draw_spec.size(); i++)
 	{
 		drawList(m_draw_spec[i], phase);
 	}
 
+	/*
+		Draw dragged item stack
+	*/
+	drawSelectedItem();
+
 	/*
 		Call base class
 	*/
 	gui::IGUIElement::draw();
 }
 
+void GUIInventoryMenu::updateSelectedItem()
+{
+	// If the selected stack has become empty for some reason, deselect it.
+	// If the selected stack has become smaller, adjust m_selected_amount.
+	if(m_selected_item)
+	{
+		bool selection_valid = false;
+		if(m_selected_item->isValid())
+		{
+			Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
+			if(inv)
+			{
+				InventoryList *list = inv->getList(m_selected_item->listname);
+				if(list && (u32) m_selected_item->i < list->getSize())
+				{
+					ItemStack stack = list->getItem(m_selected_item->i);
+					if(m_selected_amount > stack.count)
+						m_selected_amount = stack.count;
+					if(!stack.empty())
+						selection_valid = true;
+				}
+			}
+		}
+		if(!selection_valid)
+		{
+			delete m_selected_item;
+			m_selected_item = NULL;
+			m_selected_amount = 0;
+			m_selected_dragging = false;
+		}
+	}
+
+	// If craftresult is nonempty and nothing else is selected, select it now.
+	if(!m_selected_item)
+	{
+		for(u32 i=0; i<m_draw_spec.size(); i++)
+		{
+			const ListDrawSpec &s = m_draw_spec[i];
+			if(s.listname == "craftpreview")
+			{
+				Inventory *inv = m_invmgr->getInventory(s.inventoryloc);
+				InventoryList *list = inv->getList("craftresult");
+				if(list && list->getSize() >= 1 && !list->getItem(0).empty())
+				{
+					m_selected_item = new ItemSpec;
+					m_selected_item->inventoryloc = s.inventoryloc;
+					m_selected_item->listname = "craftresult";
+					m_selected_item->i = 0;
+					m_selected_amount = 0;
+					m_selected_dragging = false;
+					break;
+				}
+			}
+		}
+	}
+
+	// If craftresult is selected, keep the whole stack selected
+	if(m_selected_item && m_selected_item->listname == "craftresult")
+	{
+		Inventory *inv = m_invmgr->getInventory(m_selected_item->inventoryloc);
+		assert(inv);
+		InventoryList *list = inv->getList(m_selected_item->listname);
+		assert(list);
+		m_selected_amount = list->getItem(m_selected_item->i).count;
+	}
+}
+
 bool GUIInventoryMenu::OnEvent(const SEvent& event)
 {
 	if(event.EventType==EET_KEY_INPUT_EVENT)
@@ -418,133 +506,242 @@ bool GUIInventoryMenu::OnEvent(const SEvent& event)
 		// Mouse event other than movement
 
 		v2s32 p(event.MouseInput.X, event.MouseInput.Y);
+		m_pointer = p;
+
+		// Get selected item and hovered/clicked item (s)
+
+		updateSelectedItem();
 		ItemSpec s = getItemAtPos(p);
 
 		Inventory *inv_selected = NULL;
 		Inventory *inv_s = NULL;
+
 		if(m_selected_item)
 		{
-			assert(m_selected_item->isValid());
 			inv_selected = m_invmgr->getInventory(m_selected_item->inventoryloc);
 			assert(inv_selected);
+			assert(inv_selected->getList(m_selected_item->listname) != NULL);
 		}
+
+		u32 s_count = 0;
+
 		if(s.isValid())
 		{
 			inv_s = m_invmgr->getInventory(s.inventoryloc);
 			assert(inv_s);
+
+			InventoryList *list = inv_s->getList(s.listname);
+			if(list != NULL && (u32) s.i < list->getSize())
+				s_count = list->getItem(s.i).count;
+			else
+				s.i = -1;  // make it invalid again
 		}
-		bool different_item = m_selected_item
-			&& ((inv_selected != inv_s)
-			|| (m_selected_item->listname != s.listname)
-			|| (m_selected_item->i != s.i));
 
-		int amount = -1;
+		// buttons: 0 = left, 1 = right, 2 = middle
+		// up/down: 0 = down (press), 1 = up (release), 2 = unknown event
+		int button = 0;
+		int updown = 2;
 		if(event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN)
-			amount = 0;
+			{ button = 0; updown = 0; }
 		else if(event.MouseInput.Event == EMIE_RMOUSE_PRESSED_DOWN)
-			amount = 1;
+			{ button = 1; updown = 0; }
 		else if(event.MouseInput.Event == EMIE_MMOUSE_PRESSED_DOWN)
-			amount = 10;
-		else if(event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP && different_item)
-			amount = 0;
-		//else if(event.MouseInput.Event == EMIE_RMOUSE_LEFT_UP && different_item)
-		//	amount = 1;
-		//else if(event.MouseInput.Event == EMIE_MMOUSE_LEFT_UP && different_item)
-		//	amount = 10;
-
-		if(amount >= 0)
+			{ button = 2; updown = 0; }
+		else if(event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP)
+			{ button = 0; updown = 1; }
+		else if(event.MouseInput.Event == EMIE_RMOUSE_LEFT_UP)
+			{ button = 1; updown = 1; }
+		else if(event.MouseInput.Event == EMIE_MMOUSE_LEFT_UP)
+			{ button = 2; updown = 1; }
+
+		// Set this number to a positive value to generate a move action
+		// from m_selected_item to s.
+		u32 move_amount = 0;
+
+		// Set this number to a positive value to generate a drop action
+		// from m_selected_item.
+		u32 drop_amount = 0;
+
+		// Set this number to a positive value to generate a craft action at s.
+		u32 craft_amount = 0;
+
+		if(updown == 0)
 		{
-			// Indicates whether source slot should be deselected
-			bool remove_selection = false;
+			// Some mouse button has been pressed
 
-			//infostream<<"Mouse action at p=("<<p.X<<","<<p.Y<<")"<<std::endl;
-			if(s.isValid())
+			//infostream<<"Mouse button "<<button<<" pressed at p=("
+			//	<<p.X<<","<<p.Y<<")"<<std::endl;
+
+			m_selected_dragging = false;
+
+			if(s.isValid() && s.listname == "craftpreview")
 			{
-				infostream<<"Mouse action on "<<s.inventoryloc.dump()
-						<<"/"<<s.listname<<" "<<s.i<<std::endl;
-				if(m_selected_item)
-				{
-					Inventory *inv_from = inv_selected;
-					Inventory *inv_to = inv_s;
-					assert(inv_from);
-					assert(inv_to);
-					InventoryList *list_from =
-							inv_from->getList(m_selected_item->listname);
-					InventoryList *list_to =
-							inv_to->getList(s.listname);
-					if(list_from == NULL)
-						infostream<<"from list doesn't exist"<<std::endl;
-					if(list_to == NULL)
-						infostream<<"to list doesn't exist"<<std::endl;
-					if(list_from && list_to
-							&& !list_from->getItem(m_selected_item->i).empty())
-					{
-						infostream<<"Handing IACTION_MOVE to manager"<<std::endl;
-						IMoveAction *a = new IMoveAction();
-						a->count = amount;
-						a->from_inv = m_selected_item->inventoryloc;
-						a->from_list = m_selected_item->listname;
-						a->from_i = m_selected_item->i;
-						a->to_inv = s.inventoryloc;
-						a->to_list = s.listname;
-						a->to_i = s.i;
-						m_invmgr->inventoryAction(a);
-						
-						if(amount == 0 || list_from->getItem(m_selected_item->i).count<=amount)
-							remove_selection = true;
-					}
-				}
-				else
+				// Craft preview has been clicked: craft
+				craft_amount = (button == 2 ? 10 : 1);
+			}
+			else if(m_selected_item == NULL)
+			{
+				if(s_count != 0)
 				{
-					/*
-						Select if nonempty
-					*/
-					assert(inv_s);
-					InventoryList *list = inv_s->getList(s.listname);
-					if(list && !list->getItem(s.i).empty())
-					{
-						m_selected_item = new ItemSpec(s);
-					}
+					// Non-empty stack has been clicked: select it
+					m_selected_item = new ItemSpec(s);
+
+					if(button == 1)  // right
+						m_selected_amount = (s_count + 1) / 2;
+					else if(button == 2)  // middle
+						m_selected_amount = MYMIN(s_count, 10);
+					else  // left
+						m_selected_amount = s_count;
+
+					m_selected_dragging = true;
 				}
 			}
-			else if(m_selected_item)
+			else  // m_selected_item != NULL
 			{
-				// If moved outside the menu, drop.
-				// (Otherwise abort inventory action.)
-				if(getAbsoluteClippingRect().isPointInside(m_pointer))
+				assert(m_selected_amount >= 1);
+
+				if(s.isValid())
 				{
-					// Inside menu
-					remove_selection = true;
+					// Clicked another slot: move
+					if(button == 1)  // right
+						move_amount = 1;
+					else if(button == 2)  // middle
+						move_amount = MYMIN(m_selected_amount, 10);
+					else  // left
+						move_amount = m_selected_amount;
+				}
+				else if(getAbsoluteClippingRect().isPointInside(m_pointer))
+				{
+					// Clicked somewhere else: deselect
+					m_selected_amount = 0;
 				}
 				else
 				{
-					// Outside of menu
-					Inventory *inv_from = inv_selected;
-					assert(inv_from);
-					InventoryList *list_from =
-							inv_from->getList(m_selected_item->listname);
-					if(list_from == NULL)
-						infostream<<"from list doesn't exist"<<std::endl;
-					if(list_from && !list_from->getItem(m_selected_item->i).empty())
-					{
-						infostream<<"Handing IACTION_DROP to manager"<<std::endl;
-						IDropAction *a = new IDropAction();
-						a->count = amount;
-						a->from_inv = m_selected_item->inventoryloc;
-						a->from_list = m_selected_item->listname;
-						a->from_i = m_selected_item->i;
-						m_invmgr->inventoryAction(a);
-						if(amount == 0 || list_from->getItem(m_selected_item->i).count<=amount)
-							remove_selection = true;
-					}
+					// Clicked outside of the window: drop
+					if(button == 1)  // right
+						drop_amount = 1;
+					else if(button == 2)  // middle
+						drop_amount = MYMIN(m_selected_amount, 10);
+					else  // left
+						drop_amount = m_selected_amount;
+				}
+			}
+		}
+		else if(updown == 1)
+		{
+			// Some mouse button has been released
+
+			//infostream<<"Mouse button "<<button<<" released at p=("
+			//	<<p.X<<","<<p.Y<<")"<<std::endl;
+
+			if(m_selected_item != NULL && m_selected_dragging && s.isValid())
+			{
+				if((inv_selected != inv_s) ||
+					(m_selected_item->listname != s.listname) ||
+					(m_selected_item->i != s.i))
+				{
+					// Dragged to different slot: move all selected
+					move_amount = m_selected_amount;
 				}
 			}
+			else if(m_selected_item != NULL && m_selected_dragging &&
+				!(getAbsoluteClippingRect().isPointInside(m_pointer)))
+			{
+				// Dragged outside of window: drop all selected
+				drop_amount = m_selected_amount;
+			}
 
-			if(remove_selection)
+			m_selected_dragging = false;
+		}
+
+		// Possibly send inventory action to server
+		if(move_amount > 0)
+		{
+			// Send IACTION_MOVE
+
+			assert(m_selected_item && m_selected_item->isValid());
+			assert(s.isValid());
+
+			assert(inv_selected && inv_s);
+			InventoryList *list_from = inv_selected->getList(m_selected_item->listname);
+			InventoryList *list_to = inv_s->getList(s.listname);
+			assert(list_from && list_to);
+			ItemStack stack_from = list_from->getItem(m_selected_item->i);
+			ItemStack stack_to = list_to->getItem(s.i);
+
+			// Check how many items can be moved
+			move_amount = stack_from.count = MYMIN(move_amount, stack_from.count);
+			ItemStack leftover = stack_to.addItem(stack_from, m_gamedef->idef());
+			if(leftover.count == stack_from.count)
+			{
+				// Swap the stacks
+			}
+			else if(leftover.empty())
+			{
+				// Item fits
+			}
+			else
 			{
-				delete m_selected_item;
-				m_selected_item = NULL;
+				// Item only fits partially
+				move_amount -= leftover.count;
 			}
+			assert(move_amount > 0 && move_amount <= m_selected_amount);
+			m_selected_amount -= move_amount;
+
+			infostream<<"Handing IACTION_MOVE to manager"<<std::endl;
+			IMoveAction *a = new IMoveAction();
+			a->count = move_amount;
+			a->from_inv = m_selected_item->inventoryloc;
+			a->from_list = m_selected_item->listname;
+			a->from_i = m_selected_item->i;
+			a->to_inv = s.inventoryloc;
+			a->to_list = s.listname;
+			a->to_i = s.i;
+			m_invmgr->inventoryAction(a);
+		}
+		else if(drop_amount > 0)
+		{
+			// Send IACTION_DROP
+
+			assert(m_selected_item && m_selected_item->isValid());
+			assert(inv_selected);
+			InventoryList *list_from = inv_selected->getList(m_selected_item->listname);
+			assert(list_from);
+			ItemStack stack_from = list_from->getItem(m_selected_item->i);
+
+			// Check how many items can be dropped
+			drop_amount = stack_from.count = MYMIN(drop_amount, stack_from.count);
+			assert(drop_amount > 0 && drop_amount <= m_selected_amount);
+			m_selected_amount -= drop_amount;
+
+			infostream<<"Handing IACTION_DROP to manager"<<std::endl;
+			IDropAction *a = new IDropAction();
+			a->count = drop_amount;
+			a->from_inv = m_selected_item->inventoryloc;
+			a->from_list = m_selected_item->listname;
+			a->from_i = m_selected_item->i;
+			m_invmgr->inventoryAction(a);
+		}
+		else if(craft_amount > 0)
+		{
+			// Send IACTION_CRAFT
+
+			assert(s.isValid());
+			assert(inv_s);
+
+			infostream<<"Handing IACTION_CRAFT to manager"<<std::endl;
+			ICraftAction *a = new ICraftAction();
+			a->count = craft_amount;
+			a->craft_inv = s.inventoryloc;
+			m_invmgr->inventoryAction(a);
+		}
+
+		// If m_selected_amount has been decreased to zero, deselect
+		if(m_selected_amount == 0)
+		{
+			delete m_selected_item;
+			m_selected_item = NULL;
+			m_selected_dragging = false;
 		}
 	}
 	if(event.EventType==EET_GUI_EVENT)
diff --git a/src/guiInventoryMenu.h b/src/guiInventoryMenu.h
index 903a8b13..ed8df88f 100644
--- a/src/guiInventoryMenu.h
+++ b/src/guiInventoryMenu.h
@@ -137,7 +137,9 @@ public:
 	
 	ItemSpec getItemAtPos(v2s32 p) const;
 	void drawList(const ListDrawSpec &s, int phase);
+	void drawSelectedItem();
 	void drawMenu();
+	void updateSelectedItem();
 
 	bool OnEvent(const SEvent& event);
 	
@@ -160,6 +162,9 @@ protected:
 	core::array<ListDrawSpec> m_draw_spec;
 
 	ItemSpec *m_selected_item;
+	u32 m_selected_amount;
+	bool m_selected_dragging;
+
 	v2s32 m_pointer;
 	gui::IGUIStaticText *m_tooltip_element;
 };
diff --git a/src/inventorymanager.cpp b/src/inventorymanager.cpp
index eeb293cb..b42a8067 100644
--- a/src/inventorymanager.cpp
+++ b/src/inventorymanager.cpp
@@ -25,6 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "main.h"  // for g_settings
 #include "settings.h"
 #include "utility.h"
+#include "craftdef.h"
 
 /*
 	InventoryLocation
@@ -124,6 +125,10 @@ InventoryAction * InventoryAction::deSerialize(std::istream &is)
 	{
 		a = new IDropAction(is);
 	}
+	else if(type == "Craft")
+	{
+		a = new ICraftAction(is);
+	}
 
 	return a;
 }
@@ -152,7 +157,7 @@ IMoveAction::IMoveAction(std::istream &is)
 	to_i = stoi(ts);
 }
 
-void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player)
+void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 {
 	Inventory *inv_from = mgr->getInventory(from_inv);
 	Inventory *inv_to = mgr->getInventory(to_inv);
@@ -273,7 +278,7 @@ IDropAction::IDropAction(std::istream &is)
 	from_i = stoi(ts);
 }
 
-void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player)
+void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 {
 	Inventory *inv_from = mgr->getInventory(from_inv);
 	
@@ -332,3 +337,120 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player)
 			<<" i="<<from_i
 			<<std::endl;
 }
+
+ICraftAction::ICraftAction(std::istream &is)
+{
+	std::string ts;
+
+	std::getline(is, ts, ' ');
+	count = stoi(ts);
+
+	std::getline(is, ts, ' ');
+	craft_inv.deSerialize(ts);
+}
+
+void ICraftAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
+{
+	Inventory *inv_craft = mgr->getInventory(craft_inv);
+	
+	if(!inv_craft){
+		infostream<<"ICraftAction::apply(): FAIL: inventory not found: "
+				<<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+		return;
+	}
+
+	InventoryList *list_craft = inv_craft->getList("craft");
+	InventoryList *list_craftresult = inv_craft->getList("craftresult");
+
+	/*
+		If a list doesn't exist or the source item doesn't exist
+	*/
+	if(!list_craft){
+		infostream<<"ICraftAction::apply(): FAIL: craft list not found: "
+				<<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+		return;
+	}
+	if(!list_craftresult){
+		infostream<<"ICraftAction::apply(): FAIL: craftresult list not found: "
+				<<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+		return;
+	}
+	if(list_craftresult->getSize() < 1){
+		infostream<<"ICraftAction::apply(): FAIL: craftresult list too short: "
+				<<"craft_inv=\""<<craft_inv.dump()<<"\""<<std::endl;
+		return;
+	}
+
+	ItemStack crafted;
+	int count_remaining = count;
+	bool found = getCraftingResult(inv_craft, crafted, false, gamedef);
+
+	while(found && list_craftresult->itemFits(0, crafted))
+	{
+		// Decrement input and add crafting output
+		getCraftingResult(inv_craft, crafted, true, gamedef);
+		list_craftresult->addItem(0, crafted);
+		mgr->setInventoryModified(craft_inv);
+
+		actionstream<<player->getDescription()
+				<<" crafts "
+				<<crafted.getItemString()
+				<<std::endl;
+
+		// Decrement counter
+		if(count_remaining == 1)
+			break;
+		else if(count_remaining > 1)
+			count_remaining--;
+
+		// Get next crafting result
+		found = getCraftingResult(inv_craft, crafted, false, gamedef);
+	}
+
+	infostream<<"ICraftAction::apply(): crafted "
+			<<" craft_inv=\""<<craft_inv.dump()<<"\""
+			<<std::endl;
+}
+
+
+// Crafting helper
+bool getCraftingResult(Inventory *inv, ItemStack& result,
+		bool decrementInput, IGameDef *gamedef)
+{
+	DSTACK(__FUNCTION_NAME);
+	
+	result.clear();
+
+	// TODO: Allow different sizes of crafting grids
+
+	// Get the InventoryList in which we will operate
+	InventoryList *clist = inv->getList("craft");
+	if(!clist || clist->getSize() != 9)
+		return false;
+
+	// Mangle crafting grid to an another format
+	CraftInput ci;
+	ci.method = CRAFT_METHOD_NORMAL;
+	ci.width = 3;
+	for(u16 i=0; i<9; i++)
+		ci.items.push_back(clist->getItem(i));
+
+	// Find out what is crafted and add it to result item slot
+	CraftOutput co;
+	bool found = gamedef->getCraftDefManager()->getCraftResult(
+			ci, co, decrementInput, gamedef);
+	if(found)
+		result.deSerialize(co.item, gamedef->getItemDefManager());
+
+	if(found && decrementInput)
+	{
+		// CraftInput has been changed, apply changes in clist
+		for(u16 i=0; i<9; i++)
+		{
+			clist->changeItem(i, ci.items[i]);
+		}
+	}
+
+	return found;
+}
+
diff --git a/src/inventorymanager.h b/src/inventorymanager.h
index f6ae4feb..890d0516 100644
--- a/src/inventorymanager.h
+++ b/src/inventorymanager.h
@@ -92,6 +92,7 @@ public:
 
 #define IACTION_MOVE 0
 #define IACTION_DROP 1
+#define IACTION_CRAFT 2
 
 struct InventoryAction
 {
@@ -99,7 +100,8 @@ struct InventoryAction
 	
 	virtual u16 getType() const = 0;
 	virtual void serialize(std::ostream &os) const = 0;
-	virtual void apply(InventoryManager *mgr, ServerActiveObject *player) = 0;
+	virtual void apply(InventoryManager *mgr, ServerActiveObject *player,
+			IGameDef *gamedef) = 0;
 };
 
 struct IMoveAction : public InventoryAction
@@ -139,7 +141,7 @@ struct IMoveAction : public InventoryAction
 		os<<to_i;
 	}
 
-	void apply(InventoryManager *mgr, ServerActiveObject *player);
+	void apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef);
 };
 
 struct IDropAction : public InventoryAction
@@ -172,8 +174,40 @@ struct IDropAction : public InventoryAction
 		os<<from_i;
 	}
 
-	void apply(InventoryManager *mgr, ServerActiveObject *player);
+	void apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef);
 };
 
+struct ICraftAction : public InventoryAction
+{
+	// count=0 means "everything"
+	u16 count;
+	InventoryLocation craft_inv;
+	
+	ICraftAction()
+	{
+		count = 0;
+	}
+	
+	ICraftAction(std::istream &is);
+
+	u16 getType() const
+	{
+		return IACTION_CRAFT;
+	}
+
+	void serialize(std::ostream &os) const
+	{
+		os<<"Craft ";
+		os<<count<<" ";
+		os<<craft_inv.dump()<<" ";
+	}
+
+	void apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef);
+};
+
+// Crafting helper
+bool getCraftingResult(Inventory *inv, ItemStack& result,
+		bool decrementInput, IGameDef *gamedef);
+
 #endif
 
diff --git a/src/player.cpp b/src/player.cpp
index b072746c..688be5d9 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -40,7 +40,6 @@ Player::Player(IGameDef *gamedef):
 	swimming_up(false),
 	inventory(gamedef->idef()),
 	inventory_backup(NULL),
-	craftresult_is_preview(true),
 	hp(20),
 	peer_id(PEER_ID_INEXISTENT),
 // protected
@@ -64,6 +63,7 @@ void Player::resetInventory()
 	inventory.clear();
 	inventory.addList("main", PLAYER_INVENTORY_SIZE);
 	inventory.addList("craft", 9);
+	inventory.addList("craftpreview", 1);
 	inventory.addList("craftresult", 1);
 }
 
@@ -119,7 +119,6 @@ void Player::serialize(std::ostream &os)
 	args.setFloat("pitch", m_pitch);
 	args.setFloat("yaw", m_yaw);
 	args.setV3F("position", m_position);
-	args.setBool("craftresult_is_preview", craftresult_is_preview);
 	args.setS32("hp", hp);
 
 	args.writeLines(os);
@@ -157,11 +156,10 @@ void Player::deSerialize(std::istream &is)
 	setPitch(args.getFloat("pitch"));
 	setYaw(args.getFloat("yaw"));
 	setPosition(args.getV3F("position"));
+	bool craftresult_is_preview = true;
 	try{
 		craftresult_is_preview = args.getBool("craftresult_is_preview");
-	}catch(SettingNotFoundException &e){
-		craftresult_is_preview = true;
-	}
+	}catch(SettingNotFoundException &e){}
 	try{
 		hp = args.getS32("hp");
 	}catch(SettingNotFoundException &e){
@@ -169,6 +167,18 @@ void Player::deSerialize(std::istream &is)
 	}
 
 	inventory.deSerialize(is);
+
+	if(inventory.getList("craftpreview") == NULL)
+	{
+		// Convert players without craftpreview
+		inventory.addList("craftpreview", 1);
+
+		if(craftresult_is_preview)
+		{
+			// Clear craftresult
+			inventory.getList("craftresult")->changeItem(0, ItemStack());
+		}
+	}
 }
 
 #ifndef SERVER
diff --git a/src/player.h b/src/player.h
index 43f6ee5e..085a4a15 100644
--- a/src/player.h
+++ b/src/player.h
@@ -155,8 +155,6 @@ public:
 	// Actual inventory is backed up here when creative mode is used
 	Inventory *inventory_backup;
 
-	bool craftresult_is_preview;
-
 	u16 hp;
 
 	u16 peer_id;
diff --git a/src/server.cpp b/src/server.cpp
index 9f3db34d..17755188 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -2377,13 +2377,6 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 		*/
 		if(a->getType() == IACTION_MOVE)
 		{
-			InventoryList *rlist = player->inventory.getList("craftresult");
-			assert(rlist);
-			InventoryList *clist = player->inventory.getList("craft");
-			assert(clist);
-			InventoryList *mlist = player->inventory.getList("main");
-			assert(mlist);
-
 			IMoveAction *ma = (IMoveAction*)a;
 
 			ma->from_inv.applyCurrentPlayer(player->getName());
@@ -2398,98 +2391,36 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 				(ma->to_inv.name == player->getName());
 
 			/*
-				Disable moving items into craftresult from elsewhere
+				Disable moving items out of craftpreview
 			*/
-			if(to_inv_is_current_player
-					&& ma->to_list == "craftresult"
-					&& (!from_inv_is_current_player
-					|| ma->from_list != "craftresult"))
+			if(ma->from_list == "craftpreview")
 			{
 				infostream<<"Ignoring IMoveAction from "
 						<<(ma->from_inv.dump())<<":"<<ma->from_list
 						<<" to "<<(ma->to_inv.dump())<<":"<<ma->to_list
-						<<" because dst is craftresult"
-						<<" and src isn't craftresult"<<std::endl;
+						<<" because src is "<<ma->from_list<<std::endl;
 				delete a;
 				return;
 			}
 
 			/*
-				Handle crafting (source is craftresult, which is preview)
+				Disable moving items into craftresult and craftpreview
 			*/
-			if(from_inv_is_current_player
-					&& ma->from_list == "craftresult"
-					&& player->craftresult_is_preview
-					&& g_settings->getBool("creative_mode") == false)
+			if(ma->to_list == "craftpreview" || ma->to_list == "craftresult")
 			{
-				ItemStack crafting_result;
-				bool crafting_possible = GetCraftingResult(peer_id,
-						crafting_result, false);
-
-				/*
-					If the craftresult is placed on itself,
-					crafting takes place and result is moved
-					into main list.
-				*/
-				if(crafting_possible
-						&& to_inv_is_current_player
-						&& ma->to_list == "craftresult")
-				{
-					if(mlist->roomForItem(crafting_result))
-					{
-						actionstream<<player->getName()
-							<<" crafts "
-							<<crafting_result.getItemString()
-							<<std::endl;
-
-						// Decrement crafting materials
-						GetCraftingResult(peer_id, crafting_result, true);
-						mlist->addItem(crafting_result);
-						rlist->clearItems();
-						player->craftresult_is_preview = true;
-						srp->m_inventory_not_sent = true;
-					}
-
-				}
-				/*
-				 	Otherwise, if the destination is part of
-					the same player's inventory, crafting
-					takes place normally.
-				*/
-				else if(crafting_possible
-						&& to_inv_is_current_player)
-				{
-					InventoryList *list = player->inventory.getList(ma->to_list);
-					if(list && list->itemFits(ma->to_i, crafting_result))
-					{
-						actionstream<<player->getName()
-							<<" crafts "
-							<<crafting_result.getItemString()
-							<<std::endl;
-
-						// Decrement crafting materials
-						GetCraftingResult(peer_id, crafting_result, true);
-						list->addItem(ma->to_i, crafting_result);
-						rlist->clearItems();
-						player->craftresult_is_preview = true;
-						srp->m_inventory_not_sent = true;
-					}
-				}
-
-				// Do not apply the action normally.
+				infostream<<"Ignoring IMoveAction from "
+						<<(ma->from_inv.dump())<<":"<<ma->from_list
+						<<" to "<<(ma->to_inv.dump())<<":"<<ma->to_list
+						<<" because dst is "<<ma->to_list<<std::endl;
 				delete a;
 				return;
 			}
 
-			/*
-				Non-crafting move
-			*/
-			
 			// Disallow moving items in elsewhere than player's inventory
 			// if not allowed to interact
 			if((getPlayerPrivs(player) & PRIV_INTERACT) == 0
-					&& (from_inv_is_current_player
-					|| to_inv_is_current_player))
+					&& (!from_inv_is_current_player
+					|| !to_inv_is_current_player))
 			{
 				infostream<<"Cannot move outside of player's inventory: "
 						<<"No interact privilege"<<std::endl;
@@ -2550,9 +2481,45 @@ void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
 				}
 			}
 		}
+		/*
+			Handle restrictions and special cases of the craft action
+		*/
+		else if(a->getType() == IACTION_CRAFT)
+		{
+			ICraftAction *ca = (ICraftAction*)a;
+
+			ca->craft_inv.applyCurrentPlayer(player->getName());
+
+			//bool craft_inv_is_current_player =
+			//	(ca->craft_inv.type == InventoryLocation::PLAYER) &&
+			//	(ca->craft_inv.name == player->getName());
+
+			// Disallow crafting if not allowed to interact
+			if((getPlayerPrivs(player) & PRIV_INTERACT) == 0)
+			{
+				infostream<<"Cannot craft: "
+						<<"No interact privilege"<<std::endl;
+				delete a;
+				return;
+			}
+
+			// If player is not an admin, check for ownership of inventory
+			if((getPlayerPrivs(player) & PRIV_SERVER) == 0)
+			{
+				std::string owner_craft = getInventoryOwner(ca->craft_inv);
+				if(owner_craft != "" && owner_craft != player->getName())
+				{
+					infostream<<"WARNING: "<<player->getName()
+						<<" tried to access an inventory that"
+						<<" belongs to "<<owner_craft<<std::endl;
+					delete a;
+					return;
+				}
+			}
+		}
 		
 		// Do the action
-		a->apply(this, srp);
+		a->apply(this, srp, this);
 		// Eat the action
 		delete a;
 	}
@@ -4049,95 +4016,24 @@ void Server::RespawnPlayer(Player *player)
 	SendPlayerHP(player);
 }
 
-bool Server::GetCraftingResult(u16 peer_id, ItemStack &result, bool decrementInput)
-{
-	DSTACK(__FUNCTION_NAME);
-	
-	Player* player = m_env->getPlayer(peer_id);
-	assert(player);
-
-	// Get the crafting InventoryList of the player in which we will operate
-	InventoryList *clist = player->inventory.getList("craft");
-	assert(clist);
-
-	// Mangle crafting grid to an another format
-	CraftInput ci;
-	ci.method = CRAFT_METHOD_NORMAL;
-	ci.width = 3;
-	for(u16 i=0; i<9; i++)
-	{
-		ci.items.push_back(clist->getItem(i));
-	}
-
-	// Find out what is crafted and add it to result item slot
-	CraftOutput co;
-	bool found = m_craftdef->getCraftResult(ci, co, decrementInput, this);
-	if(found)
-		result.deSerialize(co.item, m_itemdef);
-
-	if(decrementInput)
-	{
-		// CraftInput has been changed, apply changes in clist
-		for(u16 i=0; i<9; i++)
-		{
-			clist->changeItem(i, ci.items[i]);
-		}
-	}
-
-	return found;
-}
-
 void Server::UpdateCrafting(u16 peer_id)
 {
 	DSTACK(__FUNCTION_NAME);
 	
 	Player* player = m_env->getPlayer(peer_id);
 	assert(player);
-	ServerRemotePlayer *srp = static_cast<ServerRemotePlayer*>(player);
 
+	// Get a preview for crafting
+	ItemStack preview;
 	// No crafting in creative mode
-	if(g_settings->getBool("creative_mode"))
-		return;
-	
-	// Get the InventoryLists of the player in which we will operate
-	InventoryList *clist = player->inventory.getList("craft");
-	assert(clist);
-	InventoryList *rlist = player->inventory.getList("craftresult");
-	assert(rlist);
-	InventoryList *mlist = player->inventory.getList("main");
-	assert(mlist);
-
-	// If the result list is not a preview and is not empty, try to
-	// throw the item into main list
-	if(!player->craftresult_is_preview && rlist->getUsedSlots() != 0)
-	{
-		// Grab item out of craftresult
-		ItemStack item = rlist->changeItem(0, ItemStack());
-		// Try to put in main
-		ItemStack leftover = mlist->addItem(item);
-		// If there are leftovers, put them back to craftresult
-		rlist->addItem(leftover);
-		// Inventory was modified
-		srp->m_inventory_not_sent = true;
-	}
-	
-	// If result list is empty, we will make it preview what would be
-	// crafted
-	if(rlist->getUsedSlots() == 0)
-		player->craftresult_is_preview = true;
-	
-	// If it is a preview, find out what is the crafting result
-	// and put it in
-	if(player->craftresult_is_preview)
-	{
-		// Clear the possible old preview in it
-		rlist->clearItems();
-
-		// Put the new preview in
-		ItemStack crafting_result;
-		if(GetCraftingResult(peer_id, crafting_result, false))
-			rlist->addItem(crafting_result);
-	}
+	if(g_settings->getBool("creative_mode") == false)
+		getCraftingResult(&player->inventory, preview, false, this);
+
+	// Put the new preview in
+	InventoryList *plist = player->inventory.getList("craftpreview");
+	assert(plist);
+	assert(plist->getSize() >= 1);
+	plist->changeItem(0, preview);
 }
 
 RemoteClient* Server::getClient(u16 peer_id)
diff --git a/src/server.h b/src/server.h
index d979cb51..4fdb6006 100644
--- a/src/server.h
+++ b/src/server.h
@@ -595,7 +595,6 @@ private:
 	void HandlePlayerHP(Player *player, s16 damage);
 	void RespawnPlayer(Player *player);
 	
-	bool GetCraftingResult(u16 peer_id, ItemStack &result, bool decrementInput);
 	void UpdateCrafting(u16 peer_id);
 	
 	// When called, connection mutex should be locked