Only sync inventory when necessary

files/append/gun.lua

@@ -12,11 +12,13 @@ order_deck = function()
 
         local seed = 0
         if(EntityHasTag(shooter, "ew_client"))then
-            --GamePrint("2: shooter_rng_"..EntityGetName(shooter))
+            -- GamePrint("2: ew_shooter_rng_"..EntityGetName(shooter))
+            -- GamePrint(GlobalsGetValue("ew_shooter_rng_"..EntityGetName(shooter), "0"))
             seed = tonumber(GlobalsGetValue("ew_shooter_rng_"..EntityGetName(shooter), "0")) or 0
         elseif(EntityHasTag(shooter, "player_unit"))then
             seed = Random(10, 10000000)
             GlobalsSetValue("ew_player_rng", tostring(seed))
+            -- GamePrint(tostring(seed))
         end
 
         oldSetRandomSeed(seed, seed)

files/src/ctx.lua

@@ -11,6 +11,8 @@ ctx.init = function()
     ctx.run_ended = false
     ctx.player_data_by_local_entity = {}
     ctx.item_prevent_localize = {}
+    ctx.events = {}
+    ctx.is_inventory_open = false
 end
 
 return ctx

files/src/inventory_helper.lua

@@ -261,5 +261,18 @@ function inventory_helper.set_item_data(item_data, player_data)
     end
 end
 
+function inventory_helper.has_inventory_changed(player_data)
+    local prev_inventory = player_data.prev_inventory_hash
+    
+    local inventory_hash = 0
+    for _, item in ipairs(GameGetAllInventoryItems(player_data.entity)) do
+        local item_comp = EntityGetFirstComponentIncludingDisabled(item, "ItemComponent")
+        local slot_x, slot_y = ComponentGetValue2(item_comp, "inventory_slot")
+        inventory_hash = (inventory_hash + (item % 1024 + slot_x + slot_y)) % (math.pow(2, 20) - 1)
+    end
+    player_data.prev_inventory_hash = inventory_hash
+    return inventory_hash ~= prev_inventory
+end
+
 return inventory_helper
 

files/src/net.lua

@@ -114,6 +114,10 @@ function net.send_player_perks(perk_data)
   net.send("perks", perk_data, true)
 end
 
+function net.send_welcome()
+  net.send("welcome", nil, true)
+end
+
 function net.send_enemy_data(enemy_data)
   net.send("enemy", enemy_data)
 end

files/src/net_handling.lua

@@ -191,4 +191,8 @@ function net_handling.mod.item_upload(peer_id, item_data)
     item_sync.upload(item_data)
 end
 
+function net_handling.mod.welcome(peer_id, _)
+    ctx.events.new_player_just_connected = true
+end
+
 return net_handling

files/src/player_fns.lua

@@ -393,6 +393,9 @@ function player_fns.peer_has_player(peer_id)
 end
 
 function player_fns.peer_get_player_data(peer_id)
+    if not player_fns.peer_has_player(peer_id) then
+        player_fns.spawn_player_for(peer_id, ctx.initial_player_pos.x, ctx.initial_player_pos.y)
+    end
     return ctx.players[peer_id]
 end
 
@@ -413,6 +416,7 @@ function player_fns.spawn_player_for(peer_id, x, y)
     end
     util.set_ent_firing_blocked(new, true)
     ctx.player_data_by_local_entity[new] = new_playerdata
+    ctx.events.new_player_just_spawned = true
 end
 
 function player_fns.is_inventory_open()

init.lua

@@ -17,6 +17,7 @@ local perk_fns = dofile_once("mods/quant.ew/files/src/perk_fns.lua")
 local enemy_sync = dofile_once("mods/quant.ew/files/src/enemy_sync.lua")
 local world_sync = dofile_once("mods/quant.ew/files/src/world_sync.lua")
 local item_sync = dofile_once("mods/quant.ew/files/src/item_sync.lua")
+local inventory_helper = dofile_once("mods/quant.ew/files/src/inventory_helper.lua")
 
 ModLuaFileAppend("data/scripts/gun/gun.lua", "mods/quant.ew/files/append/gun.lua")
 ModLuaFileAppend("data/scripts/gun/gun_actions.lua", "mods/quant.ew/files/append/action_fix.lua")
@@ -112,6 +113,14 @@ end
 function OnPlayerSpawned( player_entity ) -- This runs when player entity has been created
 	GamePrint( "OnPlayerSpawned() - Player entity id: " .. tostring(player_entity) )
 
+    for _, client in pairs(EntityGetWithTag("ew_client")) do
+        GamePrint("Removing previous client: "..client)
+        EntityKill(client)
+    end
+
+    local x, y = EntityGetTransform(player_entity)
+    ctx.initial_player_pos = {x=x, y=y}
+
     my_player = player_fns.make_playerdata_for(player_entity, ctx.my_id)
     GamePrint("My peer_id: "..ctx.my_id)
     ctx.players[ctx.my_id] = my_player
@@ -150,6 +159,13 @@ local function on_world_pre_update_inner()
 
     net.update()
 
+    local inventory_gui_comp = EntityGetFirstComponentIncludingDisabled(my_player.entity, "InventoryGuiComponent")
+    local inventory_open = ComponentGetValue2(inventory_gui_comp, "mActive")
+    if ctx.is_inventory_open and not inventory_open then
+        ctx.events.inventory_maybe_just_changed = true
+    end
+    ctx.is_inventory_open = inventory_open
+
     if ctx.is_host and not EntityGetIsAlive(my_player.entity) then
         if not ctx.run_ended then
             GamePrint("Notifying of run end")
@@ -169,6 +185,10 @@ local function on_world_pre_update_inner()
         end
     end
 
+    if GameGetFrameNum() == 0 then
+        net.send_welcome()
+    end
+
     -- Item sync
     if ctx.is_host then
         item_sync.host_upload_items(my_player)
@@ -212,12 +232,18 @@ local function on_world_pre_update_inner()
         net.send_host_player_info(player_info)
     end
 
+    if ctx.events.new_player_just_connected or ctx.events.inventory_maybe_just_changed or GameGetFrameNum() % 20 == 0 then
+        if ctx.events.new_player_just_connected or inventory_helper.has_inventory_changed(my_player) then            
+            local inventory_state = player_fns.serialize_items(my_player)
+            if inventory_state ~= nil then
+                GamePrint("Sending updated inventory")
+                net.send_player_inventory(inventory_state)
+            end
+        end
+    end
+
     -- Inventory and perk sync
     if GameGetFrameNum() % 120 == 0 then
-        local inventory_state = player_fns.serialize_items(my_player)
-        if inventory_state ~= nil then
-            net.send_player_inventory(inventory_state)
-        end
         local perk_data = perk_fns.get_my_perks()
         if perk_data ~= nil then
             net.send_player_perks(perk_data)
@@ -243,6 +269,7 @@ end
 
 function OnWorldPostUpdate() -- This is called every time the game has finished updating the world
 	util.tpcall(on_world_post_update_inner)
+    ctx.events = {}
 end
 
 

todo.txt

@@ -9,7 +9,7 @@
    + Sync shuffle
  k Синхронизировать смерти противников
  - Общее золото
- - Удаление лишних клиентов при загрузке игры
+ + Удаление лишних клиентов при загрузке игры
  - intern pathnames in enemy sync
  + Fix bottles and other items duplicating when thrown (on host?)
 
@@ -24,8 +24,9 @@
  + Позволить менять сид мира
  - Никнеймы игроков
  k Лимит на длину сообщения
- - Улучшеная синхронизация инвентаря и перков
- + ...и текущего предмета
+ + Улучшеная синхронизация инвентаря 
+   - ...и перков
+   + ...и текущего предмета
  + reliability
  + Сжатие пакетов
  + Перекидывание предметов
@@ -37,4 +38,3 @@
  - proxy: stop receiving connections before another start_game on game over, noita: try to reconnect to proxy.
  - sync traps
  - holy mountains are screwed up when clients enter it before host does
-