]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/inventorymanager.cpp
upright_sprite: Fix walk animation in first person (#12194)
[dragonfireclient.git] / src / inventorymanager.cpp
index 6ebc2994bcf79f36e901b01453379d4379b92158..ecdb56a972240b09e5245d007c7613b0ded38437 100644 (file)
@@ -18,10 +18,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 */
 
 #include "inventorymanager.h"
+#include "debug.h"
 #include "log.h"
 #include "serverenvironment.h"
-#include "serverscripting.h"
-#include "serverobject.h"
+#include "scripting_server.h"
+#include "server/serveractiveobject.h"
 #include "settings.h"
 #include "craftdef.h"
 #include "rollback_interface.h"
@@ -43,7 +44,7 @@ std::string InventoryLocation::dump() const
 
 void InventoryLocation::serialize(std::ostream &os) const
 {
-       switch(type){
+       switch (type) {
        case InventoryLocation::UNDEFINED:
                os<<"undefined";
                break;
@@ -68,21 +69,14 @@ void InventoryLocation::deSerialize(std::istream &is)
 {
        std::string tname;
        std::getline(is, tname, ':');
-       if(tname == "undefined")
-       {
+       if (tname == "undefined") {
                type = InventoryLocation::UNDEFINED;
-       }
-       else if(tname == "current_player")
-       {
+       } else if (tname == "current_player") {
                type = InventoryLocation::CURRENT_PLAYER;
-       }
-       else if(tname == "player")
-       {
+       } else if (tname == "player") {
                type = InventoryLocation::PLAYER;
                std::getline(is, name, '\n');
-       }
-       else if(tname == "nodemeta")
-       {
+       } else if (tname == "nodemeta") {
                type = InventoryLocation::NODEMETA;
                std::string pos;
                std::getline(is, pos, '\n');
@@ -90,20 +84,16 @@ void InventoryLocation::deSerialize(std::istream &is)
                p.X = stoi(fn.next(","));
                p.Y = stoi(fn.next(","));
                p.Z = stoi(fn.next(","));
-       }
-       else if(tname == "detached")
-       {
+       } else if (tname == "detached") {
                type = InventoryLocation::DETACHED;
                std::getline(is, name, '\n');
-       }
-       else
-       {
+       } else {
                infostream<<"Unknown InventoryLocation type=\""<<tname<<"\""<<std::endl;
                throw SerializationError("Unknown InventoryLocation type");
        }
 }
 
-void InventoryLocation::deSerialize(std::string s)
+void InventoryLocation::deSerialize(const std::string &s)
 {
        std::istringstream is(s, std::ios::binary);
        deSerialize(is);
@@ -113,12 +103,12 @@ void InventoryLocation::deSerialize(std::string s)
        InventoryAction
 */
 
-InventoryAction * InventoryAction::deSerialize(std::istream &is)
+InventoryAction *InventoryAction::deSerialize(std::istream &is)
 {
        std::string type;
        std::getline(is, type, ' ');
 
-       InventoryAction *a = NULL;
+       InventoryAction *a = nullptr;
 
        if (type == "Move") {
                a = new IMoveAction(is, false);
@@ -126,7 +116,7 @@ InventoryAction * InventoryAction::deSerialize(std::istream &is)
                a = new IMoveAction(is, true);
        } else if (type == "Drop") {
                a = new IDropAction(is);
-       } else if(type == "Craft") {
+       } else if (type == "Craft") {
                a = new ICraftAction(is);
        }
 
@@ -137,12 +127,10 @@ InventoryAction * InventoryAction::deSerialize(std::istream &is)
        IMoveAction
 */
 
-IMoveAction::IMoveAction(std::istream &is, bool somewhere)
+IMoveAction::IMoveAction(std::istream &is, bool somewhere) :
+               move_somewhere(somewhere)
 {
        std::string ts;
-       move_somewhere = somewhere;
-       caused_by_move_somewhere = false;
-       move_count = 0;
 
        std::getline(is, ts, ' ');
        count = stoi(ts);
@@ -166,6 +154,93 @@ IMoveAction::IMoveAction(std::istream &is, bool somewhere)
        }
 }
 
+void IMoveAction::swapDirections()
+{
+       std::swap(from_inv, to_inv);
+       std::swap(from_list, to_list);
+       std::swap(from_i, to_i);
+}
+
+void IMoveAction::onPutAndOnTake(const ItemStack &src_item, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       if (to_inv.type == InventoryLocation::DETACHED)
+               sa->detached_inventory_OnPut(*this, src_item, player);
+       else if (to_inv.type == InventoryLocation::NODEMETA)
+               sa->nodemeta_inventory_OnPut(*this, src_item, player);
+       else if (to_inv.type == InventoryLocation::PLAYER)
+               sa->player_inventory_OnPut(*this, src_item, player);
+       else
+               assert(false);
+
+       if (from_inv.type == InventoryLocation::DETACHED)
+               sa->detached_inventory_OnTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               sa->nodemeta_inventory_OnTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               sa->player_inventory_OnTake(*this, src_item, player);
+       else
+               assert(false);
+}
+
+void IMoveAction::onMove(int count, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       if (from_inv.type == InventoryLocation::DETACHED)
+               sa->detached_inventory_OnMove(*this, count, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               sa->nodemeta_inventory_OnMove(*this, count, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               sa->player_inventory_OnMove(*this, count, player);
+       else
+               assert(false);
+}
+
+int IMoveAction::allowPut(const ItemStack &dst_item, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       int dst_can_put_count = 0xffff;
+       if (to_inv.type == InventoryLocation::DETACHED)
+               dst_can_put_count = sa->detached_inventory_AllowPut(*this, dst_item, player);
+       else if (to_inv.type == InventoryLocation::NODEMETA)
+               dst_can_put_count = sa->nodemeta_inventory_AllowPut(*this, dst_item, player);
+       else if (to_inv.type == InventoryLocation::PLAYER)
+               dst_can_put_count = sa->player_inventory_AllowPut(*this, dst_item, player);
+       else
+               assert(false);
+       return dst_can_put_count;
+}
+
+int IMoveAction::allowTake(const ItemStack &src_item, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       int src_can_take_count = 0xffff;
+       if (from_inv.type == InventoryLocation::DETACHED)
+               src_can_take_count = sa->detached_inventory_AllowTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               src_can_take_count = sa->nodemeta_inventory_AllowTake(*this, src_item, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               src_can_take_count = sa->player_inventory_AllowTake(*this, src_item, player);
+       else
+               assert(false);
+       return src_can_take_count;
+}
+
+int IMoveAction::allowMove(int try_take_count, ServerActiveObject *player) const
+{
+       ServerScripting *sa = PLAYER_TO_SA(player);
+       int src_can_take_count = 0xffff;
+       if (from_inv.type == InventoryLocation::DETACHED)
+               src_can_take_count = sa->detached_inventory_AllowMove(*this, try_take_count, player);
+       else if (from_inv.type == InventoryLocation::NODEMETA)
+               src_can_take_count = sa->nodemeta_inventory_AllowMove(*this, try_take_count, player);
+       else if (from_inv.type == InventoryLocation::PLAYER)
+               src_can_take_count = sa->player_inventory_AllowMove(*this, try_take_count, player);
+       else
+               assert(false);
+       return src_can_take_count;
+}
+
 void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 {
        Inventory *inv_from = mgr->getInventory(from_inv);
@@ -198,7 +273,7 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
        }
        if (!list_to) {
                infostream << "IMoveAction::apply(): FAIL: destination list not found: "
-                       << "to_inv=\""<<to_inv.dump() << "\""
+                       << "to_inv=\"" << to_inv.dump() << "\""
                        << ", to_list=\"" << to_list << "\"" << std::endl;
                return;
        }
@@ -226,6 +301,7 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                        if (!list_to->getItem(dest_i).empty()) {
                                to_i = dest_i;
                                apply(mgr, player, gamedef);
+                               assert(move_count <= count);
                                count -= move_count;
                        }
                }
@@ -246,111 +322,136 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                return;
        }
 
-       if ((u16)to_i > list_to->getSize()) {
+       if (from_i < 0 || list_from->getSize() <= (u32) from_i) {
+               infostream << "IMoveAction::apply(): FAIL: source index out of bounds: "
+                       << "size of from_list=\"" << list_from->getSize() << "\""
+                       << ", from_index=\"" << from_i << "\"" << std::endl;
+               return;
+       }
+
+       if (to_i < 0 || list_to->getSize() <= (u32) to_i) {
                infostream << "IMoveAction::apply(): FAIL: destination index out of bounds: "
-                       << "to_i=" << to_i
-                       << ", size=" << list_to->getSize() << std::endl;
+                       << "size of to_list=\"" << list_to->getSize() << "\""
+                       << ", to_index=\"" << to_i << "\"" << std::endl;
                return;
        }
+
        /*
                Do not handle rollback if both inventories are that of the same player
        */
        bool ignore_rollback = (
                from_inv.type == InventoryLocation::PLAYER &&
-               to_inv.type == InventoryLocation::PLAYER &&
-               from_inv.name == to_inv.name);
+               from_inv == to_inv);
 
        /*
                Collect information of endpoints
        */
 
-       int try_take_count = count;
-       if(try_take_count == 0)
-               try_take_count = list_from->getItem(from_i).count;
+       ItemStack src_item = list_from->getItem(from_i);
+       if (count > 0 && count < src_item.count)
+               src_item.count = count;
+       if (src_item.empty())
+               return;
 
        int src_can_take_count = 0xffff;
        int dst_can_put_count = 0xffff;
 
-       /* Query detached inventories */
+       // this is needed for swapping items inside one inventory to work
+       ItemStack restitem;
+       bool allow_swap = !list_to->itemFits(to_i, src_item, &restitem)
+               && restitem.count == src_item.count
+               && !caused_by_move_somewhere;
+       move_count = src_item.count - restitem.count;
 
-       // Move occurs in the same detached inventory
-       if(from_inv.type == InventoryLocation::DETACHED &&
-                       to_inv.type == InventoryLocation::DETACHED &&
-                       from_inv.name == to_inv.name)
-       {
-               src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowMove(
-                               from_inv.name, from_list, from_i,
-                               to_list, to_i, try_take_count, player);
-               dst_can_put_count = src_can_take_count;
-       }
-       else
-       {
-               // Destination is detached
-               if(to_inv.type == InventoryLocation::DETACHED)
-               {
-                       ItemStack src_item = list_from->getItem(from_i);
-                       src_item.count = try_take_count;
-                       dst_can_put_count = PLAYER_TO_SA(player)->detached_inventory_AllowPut(
-                                       to_inv.name, to_list, to_i, src_item, player);
-               }
-               // Source is detached
-               if(from_inv.type == InventoryLocation::DETACHED)
-               {
-                       ItemStack src_item = list_from->getItem(from_i);
-                       src_item.count = try_take_count;
-                       src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
-                                       from_inv.name, from_list, from_i, src_item, player);
-               }
+       // Shift-click: Cannot fill this stack, proceed with next slot
+       if (caused_by_move_somewhere && move_count == 0) {
+               return;
        }
 
-       /* Query node metadata inventories */
-
-       // Both endpoints are nodemeta
-       // Move occurs in the same nodemeta inventory
-       if(from_inv.type == InventoryLocation::NODEMETA &&
-                       to_inv.type == InventoryLocation::NODEMETA &&
-                       from_inv.p == to_inv.p)
-       {
-               src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowMove(
-                               from_inv.p, from_list, from_i,
-                               to_list, to_i, try_take_count, player);
-               dst_can_put_count = src_can_take_count;
-       }
-       else
-       {
-               // Destination is nodemeta
-               if(to_inv.type == InventoryLocation::NODEMETA)
-               {
-                       ItemStack src_item = list_from->getItem(from_i);
-                       src_item.count = try_take_count;
-                       dst_can_put_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowPut(
-                                       to_inv.p, to_list, to_i, src_item, player);
+       if (allow_swap) {
+               // Swap will affect the entire stack if it can performed.
+               src_item = list_from->getItem(from_i);
+               count = src_item.count;
+       }
+
+       if (from_inv == to_inv) {
+               // Move action within the same inventory
+               src_can_take_count = allowMove(src_item.count, player);
+
+               bool swap_expected = allow_swap;
+               allow_swap = allow_swap
+                       && (src_can_take_count == -1 || src_can_take_count >= src_item.count);
+               if (allow_swap) {
+                       int try_put_count = list_to->getItem(to_i).count;
+                       swapDirections();
+                       dst_can_put_count = allowMove(try_put_count, player);
+                       allow_swap = allow_swap
+                               && (dst_can_put_count == -1 || dst_can_put_count >= try_put_count);
+                       swapDirections();
+               } else {
+                       dst_can_put_count = src_can_take_count;
                }
-               // Source is nodemeta
-               if(from_inv.type == InventoryLocation::NODEMETA)
-               {
-                       ItemStack src_item = list_from->getItem(from_i);
-                       src_item.count = try_take_count;
-                       src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
-                                       from_inv.p, from_list, from_i, src_item, player);
+               if (swap_expected != allow_swap)
+                       src_can_take_count = dst_can_put_count = 0;
+       } else {
+               // Take from one inventory, put into another
+               int src_item_count = src_item.count;
+               if (caused_by_move_somewhere)
+                       // When moving somewhere: temporarily use the actual movable stack
+                       // size to ensure correct callback execution.
+                       src_item.count = move_count;
+               dst_can_put_count = allowPut(src_item, player);
+               src_can_take_count = allowTake(src_item, player);
+               if (caused_by_move_somewhere)
+                       // Reset source item count
+                       src_item.count = src_item_count;
+               bool swap_expected = allow_swap;
+               allow_swap = allow_swap
+                       && (src_can_take_count == -1 || src_can_take_count >= src_item.count)
+                       && (dst_can_put_count == -1 || dst_can_put_count >= src_item.count);
+               // A swap is expected, which means that we have to
+               // run the "allow" callbacks a second time with swapped inventories
+               if (allow_swap) {
+                       ItemStack dst_item = list_to->getItem(to_i);
+                       swapDirections();
+
+                       int src_can_take = allowPut(dst_item, player);
+                       int dst_can_put = allowTake(dst_item, player);
+                       allow_swap = allow_swap
+                               && (src_can_take == -1 || src_can_take >= dst_item.count)
+                               && (dst_can_put == -1 || dst_can_put >= dst_item.count);
+                       swapDirections();
                }
+               if (swap_expected != allow_swap)
+                       src_can_take_count = dst_can_put_count = 0;
        }
 
        int old_count = count;
 
        /* Modify count according to collected data */
-       count = try_take_count;
-       if(src_can_take_count != -1 && count > src_can_take_count)
+       count = src_item.count;
+       if (src_can_take_count != -1 && count > src_can_take_count)
                count = src_can_take_count;
-       if(dst_can_put_count != -1 && count > dst_can_put_count)
+       if (dst_can_put_count != -1 && count > dst_can_put_count)
                count = dst_can_put_count;
+
        /* Limit according to source item count */
-       if(count > list_from->getItem(from_i).count)
+       if (count > list_from->getItem(from_i).count)
                count = list_from->getItem(from_i).count;
 
        /* If no items will be moved, don't go further */
-       if(count == 0)
-       {
+       if (count == 0) {
+               if (caused_by_move_somewhere)
+                       // Set move count to zero, as no items have been moved
+                       move_count = 0;
+
+               // Undo client prediction. See 'clientApply'
+               if (from_inv.type == InventoryLocation::PLAYER)
+                       list_from->setModified();
+
+               if (to_inv.type == InventoryLocation::PLAYER)
+                       list_to->setModified();
+
                infostream<<"IMoveAction::apply(): move was completely disallowed:"
                                <<" count="<<old_count
                                <<" from inv=\""<<from_inv.dump()<<"\""
@@ -360,10 +461,11 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                                <<" list=\""<<to_list<<"\""
                                <<" i="<<to_i
                                <<std::endl;
+
                return;
        }
 
-       ItemStack src_item = list_from->getItem(from_i);
+       src_item = list_from->getItem(from_i);
        src_item.count = count;
        ItemStack from_stack_was = list_from->getItem(from_i);
        ItemStack to_stack_was = list_to->getItem(to_i);
@@ -376,7 +478,10 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
        */
        bool did_swap = false;
        move_count = list_from->moveItem(from_i,
-               list_to, to_i, count, !caused_by_move_somewhere, &did_swap);
+               list_to, to_i, count, allow_swap, &did_swap);
+       if (caused_by_move_somewhere)
+               count = old_count;
+       assert(allow_swap == did_swap);
 
        // If source is infinite, reset it's stack
        if (src_can_take_count == -1) {
@@ -403,7 +508,7 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                }
        }
        // If destination is infinite, reset it's stack and take count from source
-       if(dst_can_put_count == -1){
+       if (dst_can_put_count == -1) {
                list_to->deleteItem(to_i);
                list_to->addItem(to_i, to_stack_was);
                list_from->deleteItem(from_i);
@@ -424,21 +529,18 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                        << std::endl;
 
        // If we are inside the move somewhere loop, we don't need to report
-       // anything if nothing happened (perhaps we don't need to report
-       // anything for caused_by_move_somewhere == true, but this way its safer)
-       if (caused_by_move_somewhere && move_count == 0) {
+       // anything if nothing happened
+       if (caused_by_move_somewhere && move_count == 0)
                return;
-       }
 
        /*
                Record rollback information
        */
-       if(!ignore_rollback && gamedef->rollback())
-       {
+       if (!ignore_rollback && gamedef->rollback()) {
                IRollbackManager *rollback = gamedef->rollback();
 
                // If source is not infinite, record item take
-               if(src_can_take_count != -1){
+               if (src_can_take_count != -1) {
                        RollbackAction action;
                        std::string loc;
                        {
@@ -451,7 +553,7 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                        rollback->reportAction(action);
                }
                // If destination is not infinite, record item put
-               if(dst_can_put_count != -1){
+               if (dst_can_put_count != -1) {
                        RollbackAction action;
                        std::string loc;
                        {
@@ -469,62 +571,37 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                Report move to endpoints
        */
 
-       /* Detached inventories */
-
-       // Both endpoints are same detached
-       if(from_inv.type == InventoryLocation::DETACHED &&
-                       to_inv.type == InventoryLocation::DETACHED &&
-                       from_inv.name == to_inv.name)
-       {
-               PLAYER_TO_SA(player)->detached_inventory_OnMove(
-                               from_inv.name, from_list, from_i,
-                               to_list, to_i, count, player);
-       }
-       else
-       {
-               // Destination is detached
-               if(to_inv.type == InventoryLocation::DETACHED)
-               {
-                       PLAYER_TO_SA(player)->detached_inventory_OnPut(
-                                       to_inv.name, to_list, to_i, src_item, player);
+       // Source = destination => move
+       if (from_inv == to_inv) {
+               onMove(count, player);
+               if (did_swap) {
+                       // Item is now placed in source list
+                       src_item = list_from->getItem(from_i);
+                       swapDirections();
+                       onMove(src_item.count, player);
+                       swapDirections();
                }
-               // Source is detached
-               if(from_inv.type == InventoryLocation::DETACHED)
-               {
-                       PLAYER_TO_SA(player)->detached_inventory_OnTake(
-                                       from_inv.name, from_list, from_i, src_item, player);
-               }
-       }
-
-       /* Node metadata inventories */
-
-       // Both endpoints are same nodemeta
-       if(from_inv.type == InventoryLocation::NODEMETA &&
-                       to_inv.type == InventoryLocation::NODEMETA &&
-                       from_inv.p == to_inv.p)
-       {
-               PLAYER_TO_SA(player)->nodemeta_inventory_OnMove(
-                               from_inv.p, from_list, from_i,
-                               to_list, to_i, count, player);
-       }
-       else{
-               // Destination is nodemeta
-               if(to_inv.type == InventoryLocation::NODEMETA)
-               {
-                       PLAYER_TO_SA(player)->nodemeta_inventory_OnPut(
-                                       to_inv.p, to_list, to_i, src_item, player);
-               }
-               // Source is nodemeta
-               else if(from_inv.type == InventoryLocation::NODEMETA)
-               {
-                       PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
-                                       from_inv.p, from_list, from_i, src_item, player);
+               mgr->setInventoryModified(from_inv);
+       } else {
+               int src_item_count = src_item.count;
+               if (caused_by_move_somewhere)
+                       // When moving somewhere: temporarily use the actual movable stack
+                       // size to ensure correct callback execution.
+                       src_item.count = move_count;
+               onPutAndOnTake(src_item, player);
+               if (caused_by_move_somewhere)
+                       // Reset source item count
+                       src_item.count = src_item_count;
+               if (did_swap) {
+                       // Item is now placed in source list
+                       src_item = list_from->getItem(from_i);
+                       swapDirections();
+                       onPutAndOnTake(src_item, player);
+                       swapDirections();
                }
+               mgr->setInventoryModified(to_inv);
+               mgr->setInventoryModified(from_inv);
        }
-
-       mgr->setInventoryModified(from_inv, false);
-       if(inv_from != inv_to)
-               mgr->setInventoryModified(to_inv, false);
 }
 
 void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
@@ -534,18 +611,18 @@ void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 
        Inventory *inv_from = mgr->getInventory(from_inv);
        Inventory *inv_to = mgr->getInventory(to_inv);
-       if(!inv_from || !inv_to)
+       if (!inv_from || !inv_to)
                return;
 
        InventoryLocation current_player;
        current_player.setCurrentPlayer();
        Inventory *inv_player = mgr->getInventory(current_player);
-       if(inv_from != inv_player || inv_to != inv_player)
+       if (inv_from != inv_player || inv_to != inv_player)
                return;
 
        InventoryList *list_from = inv_from->getList(from_list);
        InventoryList *list_to = inv_to->getList(to_list);
-       if(!list_from || !list_to)
+       if (!list_from || !list_to)
                return;
 
        if (!move_somewhere)
@@ -554,7 +631,7 @@ void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
                list_from->moveItemSomewhere(from_i, list_to, count);
 
        mgr->setInventoryModified(from_inv);
-       if(inv_from != inv_to)
+       if (inv_from != inv_to)
                mgr->setInventoryModified(to_inv);
 }
 
@@ -582,7 +659,7 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
 {
        Inventory *inv_from = mgr->getInventory(from_inv);
 
-       if(!inv_from){
+       if (!inv_from) {
                infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
                                <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
                return;
@@ -593,13 +670,12 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
        /*
                If a list doesn't exist or the source item doesn't exist
        */
-       if(!list_from){
+       if (!list_from) {
                infostream<<"IDropAction::apply(): FAIL: source list not found: "
                                <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
                return;
        }
-       if(list_from->getItem(from_i).empty())
-       {
+       if (list_from->getItem(from_i).empty()) {
                infostream<<"IDropAction::apply(): FAIL: source item not found: "
                                <<"from_inv=\""<<from_inv.dump()<<"\""
                                <<", from_list=\""<<from_list<<"\""
@@ -617,58 +693,64 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
        */
 
        int take_count = list_from->getItem(from_i).count;
-       if(count != 0 && count < take_count)
+       if (count != 0 && count < take_count)
                take_count = count;
        int src_can_take_count = take_count;
 
-       // Source is detached
-       if(from_inv.type == InventoryLocation::DETACHED)
-       {
-               ItemStack src_item = list_from->getItem(from_i);
-               src_item.count = take_count;
-               src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
-                               from_inv.name, from_list, from_i, src_item, player);
-       }
+       ItemStack src_item = list_from->getItem(from_i);
+       src_item.count = take_count;
 
-       // Source is nodemeta
-       if(from_inv.type == InventoryLocation::NODEMETA)
-       {
-               ItemStack src_item = list_from->getItem(from_i);
-               src_item.count = take_count;
+       // Run callbacks depending on source inventory
+       switch (from_inv.type) {
+       case InventoryLocation::DETACHED:
+               src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::NODEMETA:
                src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
-                               from_inv.p, from_list, from_i, src_item, player);
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::PLAYER:
+               src_can_take_count = PLAYER_TO_SA(player)->player_inventory_AllowTake(
+                       *this, src_item, player);
+               break;
+       default:
+               break;
        }
 
-       if(src_can_take_count != -1 && src_can_take_count < take_count)
+       if (src_can_take_count != -1 && src_can_take_count < take_count)
                take_count = src_can_take_count;
 
-       int actually_dropped_count = 0;
-
-       ItemStack src_item = list_from->getItem(from_i);
+       // Update item due executed callbacks
+       src_item = list_from->getItem(from_i);
 
        // Drop the item
        ItemStack item1 = list_from->getItem(from_i);
        item1.count = take_count;
        if(PLAYER_TO_SA(player)->item_OnDrop(item1, player,
-                               player->getBasePosition() + v3f(0,1,0)))
-       {
-               actually_dropped_count = take_count - item1.count;
+                               player->getBasePosition())) {
+               int actually_dropped_count = take_count - item1.count;
 
-               if(actually_dropped_count == 0){
+               if (actually_dropped_count == 0) {
                        infostream<<"Actually dropped no items"<<std::endl;
+
+                       // Revert client prediction. See 'clientApply'
+                       if (from_inv.type == InventoryLocation::PLAYER)
+                               list_from->setModified();
                        return;
                }
 
                // If source isn't infinite
-               if(src_can_take_count != -1){
+               if (src_can_take_count != -1) {
                        // Take item from source list
                        ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
 
-                       if(item2.count != actually_dropped_count)
+                       if (item2.count != actually_dropped_count)
                                errorstream<<"Could not take dropped count of items"<<std::endl;
-
-                       mgr->setInventoryModified(from_inv, false);
                }
+
+               src_item.count = actually_dropped_count;
+               mgr->setInventoryModified(from_inv);
        }
 
        infostream<<"IDropAction::apply(): dropped "
@@ -677,35 +759,36 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
                        <<" i="<<from_i
                        <<std::endl;
 
-       src_item.count = actually_dropped_count;
 
        /*
                Report drop to endpoints
        */
 
-       // Source is detached
-       if(from_inv.type == InventoryLocation::DETACHED)
-       {
+       switch (from_inv.type) {
+       case InventoryLocation::DETACHED:
                PLAYER_TO_SA(player)->detached_inventory_OnTake(
-                               from_inv.name, from_list, from_i, src_item, player);
-       }
-
-       // Source is nodemeta
-       if(from_inv.type == InventoryLocation::NODEMETA)
-       {
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::NODEMETA:
                PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
-                               from_inv.p, from_list, from_i, src_item, player);
+                       *this, src_item, player);
+               break;
+       case InventoryLocation::PLAYER:
+               PLAYER_TO_SA(player)->player_inventory_OnTake(
+                       *this, src_item, player);
+               break;
+       default:
+               break;
        }
 
        /*
                Record rollback information
        */
-       if(!ignore_src_rollback && gamedef->rollback())
-       {
+       if (!ignore_src_rollback && gamedef->rollback()) {
                IRollbackManager *rollback = gamedef->rollback();
 
                // If source is not infinite, record item take
-               if(src_can_take_count != -1){
+               if (src_can_take_count != -1) {
                        RollbackAction action;
                        std::string loc;
                        {
@@ -726,20 +809,20 @@ void IDropAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
        // to make lag less apparent.
 
        Inventory *inv_from = mgr->getInventory(from_inv);
-       if(!inv_from)
+       if (!inv_from)
                return;
 
        InventoryLocation current_player;
        current_player.setCurrentPlayer();
        Inventory *inv_player = mgr->getInventory(current_player);
-       if(inv_from != inv_player)
+       if (inv_from != inv_player)
                return;
 
        InventoryList *list_from = inv_from->getList(from_list);
-       if(!list_from)
+       if (!list_from)
                return;
 
-       if(count == 0)
+       if (count == 0)
                list_from->changeItem(from_i, ItemStack());
        else
                list_from->takeItem(from_i, count);
@@ -816,17 +899,15 @@ void ICraftAction::apply(InventoryManager *mgr,
 
                // Add the new replacements to the list
                IItemDefManager *itemdef = gamedef->getItemDefManager();
-               for (std::vector<ItemStack>::iterator it = temp.begin();
-                               it != temp.end(); ++it) {
-                       for (std::vector<ItemStack>::iterator jt = output_replacements.begin();
-                                       jt != output_replacements.end(); ++jt) {
-                               if (it->name == jt->name) {
-                                       *it = jt->addItem(*it, itemdef);
-                                       if (it->empty())
+               for (auto &itemstack : temp) {
+                       for (auto &output_replacement : output_replacements) {
+                               if (itemstack.name == output_replacement.name) {
+                                       itemstack = output_replacement.addItem(itemstack, itemdef);
+                                       if (itemstack.empty())
                                                continue;
                                }
                        }
-                       output_replacements.push_back(*it);
+                       output_replacements.push_back(itemstack);
                }
 
                actionstream << player->getDescription()
@@ -837,35 +918,35 @@ void ICraftAction::apply(InventoryManager *mgr,
                // Decrement counter
                if (count_remaining == 1)
                        break;
-               else if (count_remaining > 1)
+
+               if (count_remaining > 1)
                        count_remaining--;
 
                // Get next crafting result
-               found = getCraftingResult(inv_craft, crafted, temp, false, gamedef);
+               getCraftingResult(inv_craft, crafted, temp, false, gamedef);
                PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
                found = !crafted.empty();
        }
 
        // Put the replacements in the inventory or drop them on the floor, if
-       // the invenotry is full
-       for (std::vector<ItemStack>::iterator it = output_replacements.begin();
-                       it != output_replacements.end(); ++it) {
+       // the inventory is full
+       for (auto &output_replacement : output_replacements) {
                if (list_main)
-                       *it = list_main->addItem(*it);
-               if (it->empty())
+                       output_replacement = list_main->addItem(output_replacement);
+               if (output_replacement.empty())
                        continue;
-               u16 count = it->count;
+               u16 count = output_replacement.count;
                do {
-                       PLAYER_TO_SA(player)->item_OnDrop(*it, player,
-                               player->getBasePosition() + v3f(0,1,0));
-                       if (count >= it->count) {
+                       PLAYER_TO_SA(player)->item_OnDrop(output_replacement, player,
+                               player->getBasePosition());
+                       if (count >= output_replacement.count) {
                                errorstream << "Couldn't drop replacement stack " <<
-                                       it->getItemString() << " because drop loop didn't "
+                                       output_replacement.getItemString() << " because drop loop didn't "
                                        "decrease count." << std::endl;
 
                                break;
                        }
-               } while (!it->empty());
+               } while (!output_replacement.empty());
        }
 
        infostream<<"ICraftAction::apply(): crafted "
@@ -881,38 +962,34 @@ void ICraftAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 
 
 // Crafting helper
-bool getCraftingResult(Inventory *inv, ItemStackresult,
+bool getCraftingResult(Inventory *inv, ItemStack &result,
                std::vector<ItemStack> &output_replacements,
                bool decrementInput, IGameDef *gamedef)
 {
-       DSTACK(FUNCTION_NAME);
-
        result.clear();
 
        // Get the InventoryList in which we will operate
        InventoryList *clist = inv->getList("craft");
-       if(!clist)
+       if (!clist)
                return false;
 
        // Mangle crafting grid to an another format
        CraftInput ci;
        ci.method = CRAFT_METHOD_NORMAL;
        ci.width = clist->getWidth() ? clist->getWidth() : 3;
-       for(u16 i=0; i<clist->getSize(); i++)
+       for (u16 i=0; i < clist->getSize(); 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, output_replacements, decrementInput, gamedef);
-       if(found)
+       if (found)
                result.deSerialize(co.item, gamedef->getItemDefManager());
 
-       if(found && decrementInput)
-       {
+       if (found && decrementInput) {
                // CraftInput has been changed, apply changes in clist
-               for(u16 i=0; i<clist->getSize(); i++)
-               {
+               for (u16 i=0; i < clist->getSize(); i++) {
                        clist->changeItem(i, ci.items[i]);
                }
        }