Add hedit (#268)

* Squashed '[editor]/hedit/' content from commit 0f158262

git-subtree-dir: [editor]/hedit
git-subtree-split: 0f158262e3d7ec9a6dc4548f5f9e419327ef72fe

* move hedit to [gameplay]

* Remove extra git files

* Delete README.md

Author: jlillis

[gameplay]/hedit/client/core.lua

@@ -0,0 +1,45 @@
+--
+--	CLIENTSIDE RESOURCE START PROCEDURE
+--
+local function resourceStart()
+	--Load the clientside configuration file, or create a new one if it does not exist.
+	local rootNode = xmlLoadFile(client_config_file) or xmlCreateFile(client_config_file, "config")
+	
+	--Ensure all important setting nodes exist.
+	for settingKey, defaultValue in pairs(setting) do
+		if not xmlFindChild(rootNode, settingKey, 0) then
+			local newNode = xmlCreateChild(rootNode, settingKey)
+			xmlNodeSetValue(newNode, tostring(defaultValue))
+		end
+	end
+	
+	--Remove deprecated/unused setting nodes.
+	for _, subNode in ipairs(xmlNodeGetChildren(rootNode)) do
+		local nodeName = xmlNodeGetName(subNode)
+		if not setting[nodeName] then
+			xmlDestroyNode(subNode)
+		end
+	end
+	
+	xmlSaveFile(rootNode)
+	xmlUnloadFile(rootNode)
+
+	--Cache the client-side handling saves.
+	cacheClientSaves()
+
+	--Query the server for admin rights.
+	triggerServerEvent("requestRights", root)
+	
+	--Build the GUI.
+	startBuilding()
+end
+addEventHandler("onClientResourceStart", resourceRoot, resourceStart)
+
+--
+--	CLIENTSIDE RESOURCE STOP PROCEDURE
+--
+local function resourceStop()
+	--Unload the clientside configuration file.
+	xmlUnloadFile(client_handling_file)
+end
+addEventHandler("onClientResourceStop", resourceRoot, resourceStop)

[gameplay]/hedit/client/exports.lua

@@ -0,0 +1 @@
+addEvent ( "onClientVehicleHandlingChange", true )