Creative: Add creative.is_enabled_for

game_api.txt

@@ -78,6 +78,12 @@ For example,
 is used to show all tools. Name is used in the sfinv page name, title is the
 human readable title.
 
+`is_enabled_for` is used to check whether a player is in creative mode:
+
+    creative.is_enabled_for(name)
+
+Override this to allow per-player game modes.
+
 The contents of `creative.formspec_add` is appended to every creative inventory
 page. Mods can use it to add additional formspec elements onto the default
 creative inventory formspec to be drawn after each update.

mods/creative/init.lua

@@ -1,3 +1,9 @@
+creative = {}
+
+function creative.is_enabled_for(name)
+	return minetest.setting_getbool("creative_mode")
+end
+
 dofile(minetest.get_modpath("creative") .. "/inventory.lua")
 
 if minetest.setting_getbool("creative_mode") then
@@ -28,22 +34,25 @@ if minetest.setting_getbool("creative_mode") then
 			damage_groups = {fleshy = 10},
 		}
 	})
+end
 
-	minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack)
-		return true
-	end)
+-- Unlimited node placement
+minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack)
+	return creative.is_enabled_for(placer:get_player_name())
+end)
 
-	function minetest.handle_node_drops(pos, drops, digger)
-		if not digger or not digger:is_player() then
-			return
-		end
-		local inv = digger:get_inventory()
-		if inv then
-			for _, item in ipairs(drops) do
-				item = ItemStack(item):get_name()
-				if not inv:contains_item("main", item) then
-					inv:add_item("main", item)
-				end
+-- Don't pick up if the item is already in the inventory
+function minetest.handle_node_drops(pos, drops, digger)
+	if not digger or not digger:is_player() or
+			not creative.is_enabled_for(digger:get_player_name()) then
+		return
+	end
+	local inv = digger:get_inventory()
+	if inv then
+		for _, item in ipairs(drops) do
+			item = ItemStack(item):get_name()
+			if not inv:contains_item("main", item) then
+				inv:add_item("main", item)
 			end
 		end
 	end

mods/creative/inventory.lua

@@ -1,4 +1,3 @@
-creative = {}
 local player_inventory = {}
 
 function creative.init_creative_inventory(player)
@@ -79,7 +78,7 @@ function creative.register_tab(name, title, items)
 	sfinv.register_page("creative:" .. name, {
 		title = title,
 		is_in_nav = function(self, player, context)
-			return minetest.setting_getbool("creative_mode")
+			return creative.is_enabled_for(player:get_player_name())
 		end,
 		get = function(self, player, context)
 			local player_name = player:get_player_name()
@@ -172,7 +171,7 @@ creative.register_tab("craftitems", "Items", minetest.registered_craftitems)
 
 local old_homepage_name = sfinv.get_homepage_name
 function sfinv.get_homepage_name(player)
-	if minetest.setting_getbool("creative_mode") then
+	if creative.is_enabled_for(player:get_player_name()) then
 		return "creative:all"
 	else
 		return old_homepage_name(player)