Kinda sync enemies

README.md

@@ -0,0 +1,5 @@
+# Noita Entangled Worlds
+
+
+
+Special thanks to @EvaisaDev for allowing to use code from Noita Arena mod.

files/src/ctx.lua

@@ -3,8 +3,10 @@ local ctx = {
 }
 
 ctx.init = function()
+    ctx.host_id = 0
     ctx.my_id = nil
     ctx.players = {}
+    ctx.enemy_by_remote_id = {}
 end
 
 return ctx

files/src/enemy_sync.lua

@@ -0,0 +1,87 @@
+local util = dofile_once("mods/quant.ew/files/src/util.lua")
+local ctx = dofile_once("mods/quant.ew/files/src/ctx.lua")
+
+local enemy_sync = {}
+
+local function world_exists_for(entity)
+    local x, y = EntityGetFirstHitboxCenter(entity)
+    local w, h = 5, 5 -- TODO
+    w = w * 0.5
+    h = h * 0.5
+    return DoesWorldExistAt(x - w, y - h, x + w, y + h)
+end
+
+function enemy_sync.host_upload_entities()
+    local enemy_list = EntityGetWithTag("enemy") -- TODO maybe only sync those close to players?
+    local enemy_data_list = {}
+    for i, enemy_id in ipairs(enemy_list) do
+        if not world_exists_for(enemy_id) then
+            goto continue
+        end
+        local filename = EntityGetFilename(enemy_id)
+        --print("ent "..enemy_id.." "..filename)
+        local x, y = EntityGetTransform(enemy_id)
+        local hp, max_hp = util.get_ent_health(enemy_id)
+        table.insert(enemy_data_list, {enemy_id, filename, x, y, hp, max_hp})
+        ::continue::
+    end
+    --print(#enemy_data_list)
+    return enemy_data_list
+end
+
+function enemy_sync.client_cleanup()
+    local enemy_list = EntityGetWithTag("enemy")
+    for i, enemy_id in ipairs(enemy_list) do
+        if not EntityHasTag(enemy_id, "ew_replicated") then
+            print("Despawning unreplicated "..enemy_id)
+            EntityKill(enemy_id)
+        end
+    end
+    local frame = GameGetFrameNum()
+    for remote_id, enemy_data in pairs(ctx.enemy_by_remote_id) do
+        if frame - enemy_data.frame > 60*10 then
+            print("Despawning stale "..remote_id)
+            EntityKill(enemy_data.id)
+            ctx.enemy_by_remote_id[remote_id] = nil
+        end
+    end
+end
+
+function enemy_sync.handle_enemy_data(enemy_data)
+    -- GamePrint("Got enemy data")
+    for _, enemy_info_raw in ipairs(enemy_data) do
+        local remote_enemy_id = enemy_info_raw[1]
+        local filename = enemy_info_raw[2]
+        local x = enemy_info_raw[3]
+        local y = enemy_info_raw[4]
+        local hp = enemy_info_raw[5]
+        local max_hp = enemy_info_raw[6]
+
+        local frame = GameGetFrameNum()
+        
+        if ctx.enemy_by_remote_id[remote_enemy_id] ~= nil and not EntityGetIsAlive(ctx.enemy_by_remote_id[remote_enemy_id].id) then
+            ctx.enemy_by_remote_id[remote_enemy_id] = nil
+        end
+        
+        if ctx.enemy_by_remote_id[remote_enemy_id] == nil then
+            local enemy_id = EntityLoad(filename, x, y)
+            EntityAddTag(enemy_id, "ew_replicated")
+            ctx.enemy_by_remote_id[remote_enemy_id] = {id = enemy_id, frame = frame}
+        end
+
+        local enemy_data = ctx.enemy_by_remote_id[remote_enemy_id]
+        enemy_data.frame = frame
+        local enemy_id = enemy_data.id
+        local px, py = EntityGetTransform(enemy_id)
+        local tp_limit = 30
+        local alpha = 0.2
+        -- if math.pow(px-x, 2) + math.pow(py-y, 2) > math.pow(tp_limit, 2) then
+            EntitySetTransform(enemy_id, x, y)
+        -- else
+            -- EntitySetTransform(util.lerp(px, x, alpha), util.lerp(py, y, alpha))
+        -- end
+        util.set_ent_health(enemy_id, {hp, max_hp})
+    end
+end
+
+return enemy_sync

files/src/net.lua

@@ -99,4 +99,8 @@ function net.send_player_perks(perk_data)
   net.send("perks", perk_data, true)
 end
 
+function net.send_enemy_data(enemy_data)
+  net.send("enemy", enemy_data)
+end
+
 return net

files/src/net_handling.lua

@@ -1,5 +1,6 @@
 local player_fns = dofile_once("mods/quant.ew/files/src/player_fns.lua")
 local ctx = dofile_once("mods/quant.ew/files/src/ctx.lua")
+local enemy_sync = dofile_once("mods/quant.ew/files/src/enemy_sync.lua")
 local perk_fns = dofile_once("mods/quant.ew/files/src/perk_fns.lua")
 
 local net_handling = {
@@ -52,4 +53,10 @@ function net_handling.mod.perks(peer_id, perk_data)
     perk_fns.update_perks(perk_data, player_data)
 end
 
+function net_handling.mod.enemy(peer_id, enemy_data)
+    if peer_id == ctx.host_id then
+        enemy_sync.handle_enemy_data(enemy_data)
+    end
+end
+
 return net_handling

files/src/util.lua

@@ -15,4 +15,31 @@ function util.set_ent_variable(entity, key, value)
     ComponentSetValue2(storage, "value_string", bitser.dumps(value))
 end
 
+function util.get_ent_health(entity)
+    local damage_model = EntityGetFirstComponentIncludingDisabled(entity, "DamageModelComponent")
+    if damage_model == 0 then
+        return 0, 0
+    end
+    local hp = ComponentGetValue2(damage_model, "hp")
+    local max_hp = ComponentGetValue2(damage_model, "max_hp")
+    return hp, max_hp
+end
+
+function util.set_ent_health(entity, hp_data)
+    local damage_model = EntityGetFirstComponentIncludingDisabled(entity, "DamageModelComponent")
+    if damage_model == 0 then
+        return
+    end
+    if hp_data[1] ~= nil then
+        ComponentSetValue2(damage_model, "hp", hp_data[1])
+    end
+    if hp_data[2] ~= nil then
+        ComponentSetValue2(damage_model, "max_hp", hp_data[2])
+    end
+end
+
+function util.lerp(a, b, alpha)
+    return a * alpha + b * (1 - alpha)
+end
+
 return util

init.lua

@@ -13,6 +13,7 @@ local net = dofile_once("mods/quant.ew/files/src/net.lua")
 local ctx = dofile_once("mods/quant.ew/files/src/ctx.lua")
 local pretty = dofile_once("mods/quant.ew/files/lib/pretty_print.lua")
 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")
 
 function OnProjectileFired(shooter_id, projectile_id, rng, position_x, position_y, target_x, target_y, send_message,
     unknown1, multicast_index, unknown3)
@@ -77,14 +78,15 @@ function OnPlayerSpawned( player_entity ) -- This runs when player entity has be
     GamePrint("My peer_id: "..ctx.my_id)
     ctx.players[ctx.my_id] = my_player
     ctx.ready = true
+    ctx.is_host = ctx.my_id == ctx.host_id
 
     np.SetPauseState(4)
     np.SetPauseState(0)
 
     dofile_once("data/scripts/perks/perk.lua")
     local x, y = EntityGetFirstHitboxCenter(player_entity)
-    perk_spawn(x, y, "LASER_AIM")
-    perk_spawn(x-50, y, "GLASS_CANNON")
+    perk_spawn(x, y, "LASER_AIM", true)
+    perk_spawn(x-50, y, "GLASS_CANNON", true)
 end
 
 function OnWorldPreUpdate() -- This is called every time the game is about to start updating the world
@@ -92,13 +94,21 @@ function OnWorldPreUpdate() -- This is called every time the game is about to st
 	-- GamePrint( "Pre-update hook " .. tostring(GameGetFrameNum()) )
     
     net.update()
-    if GameGetFrameNum() % 2 == 0 then
+    if GameGetFrameNum() % 1 == 0 then
         local input_data = player_fns.serialize_inputs(my_player)
         local pos_data =  player_fns.serialize_position(my_player)
         local current_slot = player_fns.get_current_slot(my_player)
         net.send_player_update(input_data, pos_data, current_slot)
     end
 
+    if GameGetFrameNum() % 2 == 1 then
+        if ctx.is_host then
+            net.send_enemy_data(enemy_sync.host_upload_entities())
+        else
+            enemy_sync.client_cleanup()
+        end
+    end
+
     if GameGetFrameNum() % 120 == 0 then
         local inventory_state = player_fns.serialize_items(my_player)
         net.send_player_inventory(inventory_state)

todo.txt

@@ -1,14 +1,9 @@
  + Синхронизация перков
-#- ShotEffectComponent
+ k Синхронизация противников
  - Общее хп
  - Синхронизация хп
  - Проверка окончания игры
  - Удаление лишних клиентов при загрузке игры
- 
-#- Immunities
-#- Sectors
-#- Telekenesis
-#- Unli
 
  - Fix weird no gui mode
 
@@ -22,10 +17,10 @@
  + ...и текущего предмета
  - reliability
  + Сжатие пакетов
- - Синхронизация противников
  - Перекидывание предметов
  - Синхронизация мира
  ? Фикс наведения на клиентов
  - fungal shift-ы
+ - orbs sync
  - test tangled better
  - poly on clients