Dual wielding

[minetest.git] / src / player.cpp

diff --git a/src/player.cpp b/src/player.cpp
index 8742454d2962dd751a952e8e3f2d6dbed2a03430..044f2cc26adcecd7436b4b57c89053c6ff9bc957 100644 (file)
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -115,6 +115,46 @@ ItemStack &Player::getWieldedItem(ItemStack *selected, ItemStack *hand) const
        return (hand && selected->name.empty()) ? *hand : *selected;
 }
 
+bool Player::getOffhandWieldedItem(ItemStack *offhand, ItemStack *place, IItemDefManager *idef, const PointedThing &pointed) const
+{
+       assert(offhand);
+
+       ItemStack main;
+
+       const InventoryList *mlist = inventory.getList("main");
+       const InventoryList *olist = inventory.getList("offhand");
+
+       if (olist)
+               *offhand = olist->getItem(0);
+
+       if (mlist && m_wield_index < mlist->getSize())
+               main = mlist->getItem(m_wield_index);
+
+       const ItemDefinition &main_def = main.getDefinition(idef);
+       const ItemDefinition &offhand_def = offhand->getDefinition(idef);
+       bool main_usable, offhand_usable;
+
+       // figure out which item to use for placements
+
+       if (pointed.type == POINTEDTHING_NODE) {
+               // an item can be used on nodes if it has a place handler or prediction
+               main_usable = main_def.has_on_place || main_def.node_placement_prediction != "";
+               offhand_usable = offhand_def.has_on_place || offhand_def.node_placement_prediction != "";
+       } else {
+               // an item can be used on anything else if it has a secondary use handler
+               main_usable = main_def.has_on_secondary_use;
+               offhand_usable = offhand_def.has_on_secondary_use;
+       }
+
+       // main hand has priority
+       bool use_offhand = offhand_usable && !main_usable;
+
+       if (place)
+               *place = use_offhand ? *offhand : main;
+
+       return use_offhand;
+}
+
 u32 Player::addHud(HudElement *toadd)
 {
        MutexAutoLock lock(m_mutex);