From e7659883cc6fca343785da2a1af3890ae273abbf Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Mon, 2 May 2022 20:55:04 +0200
Subject: Async environment for mods to do concurrent tasks (#11131)

---
 builtin/async/game.lua     | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 builtin/async/init.lua     | 11 -----------
 builtin/async/mainmenu.lua |  9 +++++++++
 3 files changed, 55 insertions(+), 11 deletions(-)
 create mode 100644 builtin/async/game.lua
 delete mode 100644 builtin/async/init.lua
 create mode 100644 builtin/async/mainmenu.lua

(limited to 'builtin/async')

diff --git a/builtin/async/game.lua b/builtin/async/game.lua
new file mode 100644
index 000000000..212a33e17
--- /dev/null
+++ b/builtin/async/game.lua
@@ -0,0 +1,46 @@
+core.log("info", "Initializing asynchronous environment (game)")
+
+local function pack2(...)
+	return {n=select('#', ...), ...}
+end
+
+-- Entrypoint to run async jobs, called by C++
+function core.job_processor(func, params)
+	local retval = pack2(func(unpack(params, 1, params.n)))
+
+	return retval
+end
+
+-- Import a bunch of individual files from builtin/game/
+local gamepath = core.get_builtin_path() .. "game" .. DIR_DELIM
+
+dofile(gamepath .. "constants.lua")
+dofile(gamepath .. "item_s.lua")
+dofile(gamepath .. "misc_s.lua")
+dofile(gamepath .. "features.lua")
+dofile(gamepath .. "voxelarea.lua")
+
+-- Transfer of globals
+do
+	assert(core.transferred_globals)
+	local all = core.deserialize(core.transferred_globals, true)
+	core.transferred_globals = nil
+
+	-- reassemble other tables
+	all.registered_nodes = {}
+	all.registered_craftitems = {}
+	all.registered_tools = {}
+	for k, v in pairs(all.registered_items) do
+		if v.type == "node" then
+			all.registered_nodes[k] = v
+		elseif v.type == "craftitem" then
+			all.registered_craftitems[k] = v
+		elseif v.type == "tool" then
+			all.registered_tools[k] = v
+		end
+	end
+
+	for k, v in pairs(all) do
+		core[k] = v
+	end
+end
diff --git a/builtin/async/init.lua b/builtin/async/init.lua
deleted file mode 100644
index 3803994d6..000000000
--- a/builtin/async/init.lua
+++ /dev/null
@@ -1,11 +0,0 @@
-
-core.log("info", "Initializing Asynchronous environment")
-
-function core.job_processor(func, serialized_param)
-	local param = core.deserialize(serialized_param)
-
-	local retval = core.serialize(func(param))
-
-	return retval or core.serialize(nil)
-end
-
diff --git a/builtin/async/mainmenu.lua b/builtin/async/mainmenu.lua
new file mode 100644
index 000000000..0e9c222d1
--- /dev/null
+++ b/builtin/async/mainmenu.lua
@@ -0,0 +1,9 @@
+core.log("info", "Initializing asynchronous environment")
+
+function core.job_processor(func, serialized_param)
+	local param = core.deserialize(serialized_param)
+
+	local retval = core.serialize(func(param))
+
+	return retval or core.serialize(nil)
+end
-- 
cgit v1.2.3