initial

resources/[system]/sessionmanager/client/initial.lua

@@ -0,0 +1,124 @@
+-- state variable for session host lock
+local sessionHostPending = false
+local sessionHostResult
+
+AddEventHandler('sessionHostResult', function(result)
+    if not sessionHostPending then
+        return
+    end
+
+    sessionHostResult = result
+    sessionHostPending = false
+end)
+
+local attempts = 0
+
+-- allow early script to create the player
+AddEventHandler('playerInfoCreated', function()
+    CreateThread(function()
+        -- so that the game won't trigger the citizen disconnect handler
+        SafeguardDisconnect(true)
+
+        -- loop for 3 times
+        while attempts < 3 do
+            -- 'find' games (this will store the host session in memory, or if no host exists, tell us later)
+            NetworkFindGame(16, false, 0, 0)
+
+            -- we don't have to wait for the finding to complete; TestSessionFind.cpp in hooks_ny will instantly return
+            local gamesFound = NetworkGetNumberOfGames(_r)
+
+            -- if we found at least one game (if the game isn't hooked, this can be any amount; but
+            -- we can't trust the implementation in that case anyway)
+            local needsToHost = true -- whether we need to host after completing a possible join
+
+            if gamesFound > 0 then
+                -- join the game
+                NetworkJoinGame(0)
+
+                SetLoadingText('Entering session') -- status text
+
+                -- wait for the join to complete
+                while NetworkJoinGamePending() do
+                    Wait(0)
+                end
+
+                -- if we succeeded, we're now a session member, and will not need to host
+                if NetworkJoinGameSucceeded() then
+                    needsToHost = false
+                    break
+                end
+            end
+
+            -- if we didn't find any games, or a join timed out, we'll *consider* hosting
+            if needsToHost then
+                -- make sure we don't have an actual other host waiting for us
+                sessionHostPending = true -- to trigger a wait loop below
+
+                TriggerServerEvent('hostingSession')
+
+                SetLoadingText('Initializing session') -- some vague status text
+
+                -- wait for the server to respond to our request
+                while sessionHostPending do
+                    Wait(0)
+                end
+
+                if sessionHostResult == 'wait' then
+                    -- TODO: not implemented yet: wait for a message from the server, then attempt finding a game/joining a game again
+                    sessionHostPending = true
+
+                    while sessionHostPending do
+                        Wait(0)
+                    end
+
+                    if sessionHostResult == 'free' then
+                        goto endLoop
+                    end
+                end
+
+                if sessionHostResult == 'conflict' and gamesFound > 0 then
+                    -- there's already a host which is working perfectly fine; show a message to the player
+                    --error('session creation conflict: could not connect to original host')
+                    echo("session creation conflict\n")
+                    goto endLoop
+                end
+
+                -- we got a green light to host; start hosting
+                if not NetworkHostGameE1(16, false, 32, false, 0, 0) then
+                    echo("session creation failure from NetworkHostGameE1\n")
+                    error('failed to initialize session')
+                end
+
+                -- wait for internal processing to complete
+                while NetworkHostGamePending() do
+                    Wait(0)
+                end
+
+                -- another failure check
+                if not NetworkHostGameSucceeded() then
+                    echo("session creation failure from NetworkHostGameSucceeded\n")
+                    error('failed to initialize session')
+                end
+
+                TriggerServerEvent('hostedSession')
+
+                break
+            end
+
+            ::endLoop::
+            attempts = attempts + 1
+        end
+
+        SafeguardDisconnect(false)
+
+        if attempts >= 3 then
+            error("Could not connect to session provider.")
+        end
+
+        SetLoadingText('Look at that!')
+
+        -- signal local game-specific resources to start
+        TriggerEvent('sessionInitialized')
+        TriggerServerEvent('sessionInitialized')
+    end)
+end)