Equipment: add equip functions

equipment/equipment.lua

@@ -1,5 +1,7 @@
 local client = require('shared.client')
 local resources = require('resources')
+local bit = require('bit')
+local packets = require('packets')
 
 local data, ftype = client.new('items_service', 'equipment')
 
@@ -9,7 +11,95 @@ ftype.base.fields.item.type.fields.item = {
     end,
 }
 
-return data
+local equippable = {[0] = true, [8] = true, [10] = true, [11] = true, [12] = true}
+
+ftype.base.fields.equip = {
+    data = function(equipment_slot, item)
+        local bag = item.bag
+        local index = item.index
+        if equipment_slot.item.bag ~= bag or equipment_slot.item.index ~= index then
+            local slot = equipment_slot.slot
+            assert(equippable[bag], 'Cannot equip from this bag (bag = ' .. bag .. ')')
+            assert(item.id ~= 0, 'Cannot equip from an empty bag slot (bag = ' .. bag .. ', index = ' .. index .. ')')
+            assert(item.status == 0, 'Cannot equip an item with this status (status = ' .. item.status .. ')')
+            assert(bit.band(bit.lshift(1, slot), item.item.slots) ~= 0, 'Cannot equip that item in this slot (slot = ' .. slot .. ', item.id = ' .. item.id .. ')')
+
+            packets.outgoing[0x050]:inject({bag_index = index, slot_id = slot, bag_id = bag})
+        end
+    end,
+}
+
+ftype.base.fields.unequip = {
+    data = function(equipment_slot)
+        if equipment_slot.item.bag ~= 0 or equipment_slot.item.index ~= 0 then
+            packets.outgoing[0x050]:inject({bag_index = 0, slot_id = equipment_slot.slot, bag_id = 0})
+        end
+    end,
+}
+
+local equipment = {}
+
+equipment.equip = function(_, slot_items)
+    local ear1 = slot_items[11]
+    local ear2 = slot_items[12]
+    if ear1 and ear2 and ear1.index == ear2.index and ear1.id == ear2.id then
+        slot_items[11] = nil
+    end
+
+    local ring1 = slot_items[13]
+    local ring2 = slot_items[14]
+    if ring1 and ring2 and ring1.index == ring2.index and ring1.id == ring2.id then
+        slot_items[13] = nil
+    end
+
+    local count = 0
+    local items = {}
+    for i = 0, 15 do
+        local item = slot_items[i]
+        if item then
+            local bag = item.bag
+            local index = item.index
+            if bag ~= 0 or index ~= 0 then
+                assert(equippable[bag], 'Cannot equip from this bag (bag = ' .. bag .. ')')
+                assert(item.id ~= 0, 'Cannot equip from an empty bag slot (bag = ' .. bag .. ', index = ' .. index .. ')')
+                assert(bit.band(bit.lshift(1, i), item.item.slots) ~= 0, 'Cannot equip that item in this slot (slot = ' .. i .. ', item.id = ' .. item.id .. ')')
+            end
+            items[count] = {bag_index = index, slot_id = i, bag_id = bag}
+            count = count + 1
+        end
+    end
+
+    if count > 0 then
+        packets.outgoing[0x051]:inject({count = count, equipment = items})
+    end
+end
+
+equipment.slot = {
+    main = 0, sub = 1, range = 2, ammo = 3,
+    head = 4, neck = 9, ear1 = 11, ear2 = 12,
+    body = 5, hands = 6, ring1 = 13, ring2 = 14,
+    back = 15, waist = 10, legs = 7, feet = 8,
+}
+
+local equipment_mt = {
+    __index = function(_, k)
+        return data[k]
+    end,
+    __newindex = function(_, k, v)
+        data[k] = v
+    end,
+    __pairs = function(_)
+        return pairs(data)
+    end,
+    __ipairs = function(_)
+        return ipairs(data)
+    end,
+    __len = function(_)
+        return #data
+    end
+}
+
+return setmetatable(equipment, equipment_mt)
 
 --[[
 Copyright © 2018, Windower Dev Team

equipment/manifest.xml

@@ -1,10 +1,11 @@
 <package>
   <name>equipment</name>
-  <version>1.1.0.2</version>
+  <version>2.0.0.0</version>
   <type>library</type>
   <dependencies>
     <dependency>items_service</dependency>
     <dependency>resources</dependency>
     <dependency>shared</dependency> 
+    <dependency>packets</dependency> 
   </dependencies>
 </package>