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Add special return value -1 to inventry callbacks

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This commit is contained in:
Perttu Ahola 2012-07-25 16:52:00 +03:00
parent db62c227c8
commit 0346e68deb
2 changed files with 43 additions and 19 deletions
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4
doc/lua_api.txt
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@ -1370,10 +1370,12 @@ Node definition (register_node)
allow_metadata_inventory_put = func(pos, listname, index, stack, player),
^ Called when a player wants to put something into the inventory
^ Return value: number of items allowed to put
^ Return value: -1: Allow and don't modify item count in inventory
allow_metadata_inventory_take = func(pos, listname, index, stack, player),
^ Called when a player wants to take something out of the inventory
^ Return value: number of items allowed to take
^ Return value: -1: Allow and don't modify item count in inventory
on_metadata_inventory_move = func(pos, from_list, from_index,
to_list, to_index, count, player),
@ -1446,10 +1448,12 @@ Detached inventory callbacks
allow_put = func(inv, listname, index, stack, player),
^ Called when a player wants to put something into the inventory
^ Return value: number of items allowed to put
^ Return value: -1: Allow and don't modify item count in inventory
allow_take = func(inv, listname, index, stack, player),
^ Called when a player wants to take something out of the inventory
^ Return value: number of items allowed to take
^ Return value: -1: Allow and don't modify item count in inventory
on_move = func(inv, from_list, from_index, to_list, to_index, count, player),
on_put = func(inv, listname, index, stack, player),

58
src/inventorymanager.cpp
View File

@ -280,19 +280,24 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
L, from_inv.p, from_list, from_i, src_item, player);
}
}
int old_count = count;
/* Modify count according to collected data */
int new_count = try_take_count;
if(new_count > src_can_take_count)
new_count = src_can_take_count;
if(new_count > dst_can_put_count)
new_count = dst_can_put_count;
count = try_take_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)
count = dst_can_put_count;
/* Limit according to source item 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(new_count == 0)
if(count == 0)
{
infostream<<"IMoveAction::apply(): move was completely disallowed: "
<<" count="<<count
infostream<<"IMoveAction::apply(): move was completely disallowed:"
<<" count="<<old_count
<<" from inv=\""<<from_inv.dump()<<"\""
<<" list=\""<<from_list<<"\""
<<" i="<<from_i
@ -303,10 +308,10 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
return;
}
count = new_count;
ItemStack 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);
/*
Perform actual move
@ -316,7 +321,19 @@ void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
*/
list_from->moveItem(from_i, list_to, to_i, count);
infostream<<"IMoveAction::apply(): moved "
// If source is infinite, reset it's stack
if(src_can_take_count == -1){
list_from->deleteItem(from_i);
list_from->addItem(from_i, from_stack_was);
}
// If destination is infinite, reset it's stack and take count from source
if(dst_can_put_count == -1){
list_to->deleteItem(to_i);
list_to->addItem(to_i, to_stack_was);
list_from->takeItem(from_i, count);
}
infostream<<"IMoveAction::apply(): moved"
<<" count="<<count
<<" from inv=\""<<from_inv.dump()<<"\""
<<" list=\""<<from_list<<"\""
@ -500,7 +517,7 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
L, from_inv.p, from_list, from_i, src_item, player);
}
if(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;
@ -518,14 +535,17 @@ void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGame
infostream<<"Actually dropped no items"<<std::endl;
return;
}
// Take item from source list
ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
if(item2.count != actually_dropped_count)
errorstream<<"Could not take dropped count of items"<<std::endl;
mgr->setInventoryModified(from_inv);
// If source isn't infinite
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)
errorstream<<"Could not take dropped count of items"<<std::endl;
mgr->setInventoryModified(from_inv);
}
}
infostream<<"IDropAction::apply(): dropped "