Added base of runes mod

- Added rune API's first implementation
 - Added basic cubic runes in solarmana

mods/runes/api.lua

@@ -0,0 +1,113 @@
+-- API of the rune mod --
+
+-- Global namespace
+runes = {}
+runes.datas = {}
+runes.datas.handlers = {}
+runes.datas.items = {}
+runes.functions = {}
+
+-- Simple rune register function
+runes.functions.register_rune = function(parameters)
+	local runedef = {}
+
+	if not parameters.name then
+		minetest.log("ERROR","[runes] Cannot register rune : no name")
+		return
+	end
+
+	runedef.name = parameters.name
+	runedef.desc = parameters.description or ""
+	runedef.img  = parameters.img or "default_stone.png"
+	runedef.type = parameters.type or "craftitem"
+	runedef.needed_mana = parameters.needed_mana or 0
+
+	runes.datas.handlers[runedef.name] = {}
+
+	if runedef.type == "cube" then
+		minetest.register_node("runes:rune_" .. runedef.name, {
+			description = runedef.desc,
+			tiles = {runedef.img},
+			groups = {oddly_breakable_by_hand = 2, rune = 1},
+			after_place_node = function(pos, placer, itemstack, pointed_thing)
+				if runes.datas.handlers[runedef.name].on_place then
+					if mana.get(placer:get_player_name()) >= runedef.needed_mana then
+						runes.datas.handlers[runedef.name].on_place(pos, placer, itemstack, pointed_thing)
+						mana.subtract(placer:get_player_name(),runedef.needed_mana)
+					else
+						minetest.chat_send_player(placer:get_player_name(),"Not enough mana (needed : " .. runedef.needed_mana ..")")
+					end
+				end
+			end,
+			can_dig = function(pos, player)
+				print(runes.datas.handlers[runedef.name].can_dig)
+				if runes.datas.handlers[runedef.name].can_dig then
+					return runes.datas.handlers[runedef.name].can_dig(pos, player)
+				else
+					return true
+				end
+			end,
+			--[[after_dig_node = function(pos, oldnode, oldmetadata, digger)
+				--if runes.datas.handlers[runedef.name].can_dig and runes.datas.handlers[runedef.name].can_dig(pos, digger) then
+					if runes.datas.handlers[runedef.name].on_dig then
+						if mana.get(digger:get_player_name()) >= runedef.needed_mana then
+							runes.datas.handlers[runedef.name].on_dig(pos, oldnode, digger)
+							mana.subtract(digger:get_player_name(),runedef.needed_mana)
+						else
+							minetest.chat_send_player(digger:get_player_name(),"Not enough mana (needed : " .. runedef.needed_mana ..")")
+						end
+					end
+				end
+			end,]]
+		})
+
+	elseif runedef.type == "plate" then
+
+	elseif runedef.type == "craftitem" then
+		minetest.register_craftitem("runes:rune_" .. runedef.name, {
+			description = runedef.desc,
+			inventory_image = runedef.img,
+			groups = {rune = 1},
+			on_use = function(itemstack, user, pointed_thing)
+				-- Let the handler do its job
+				if runes.datas.handlers[runedef.name].on_use then
+					if mana.get(user:get_player_name()) >= runedef.needed_mana then
+						runes.datas.handlers[runedef.name].on_use(itemstack, user, pointed_thing)
+						mana.subtract(user:get_player_name(),runedef.needed_mana)
+					else
+						minetest.chat_send_player(user:get_player_name(),"Not enough mana (needed : " .. runedef.needed_mana ..")")
+					end
+				end
+			end
+		})
+	end
+end
+
+
+-- Handler connector
+runes.functions.connect = function(itemname, callback, handler)
+	--[[ Available callback :
+		use
+		place
+		dig
+		can_dig
+	]]
+
+	if not runes.datas.items[itemname] then
+		minetest.log("error","[runes] Cannot connect handler at " .. handler .. " to unknown item " .. itemname)
+		return
+	end
+
+	if callback == "use" then
+		runes.datas.handlers[itemname].on_use = handler
+	elseif callback == "place" then
+		runes.datas.handlers[itemname].on_place = handler
+	elseif callback == "dig" then
+		runes.datas.handlers[itemname].on_dig = handler
+	elseif callback == "can_dig" then
+		runes.datas.handlers[itemname].can_dig = handler
+	else
+		minetest.log("error","[runes] Cannot connect handler at " .. handler .. " to item's " .. itemname .. " unknown " .. callback .. " callback")
+		return
+	end
+end