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Diffstat (limited to 'example/serverdata/scripts/crafting.lua')
| -rw-r--r-- | example/serverdata/scripts/crafting.lua | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/example/serverdata/scripts/crafting.lua b/example/serverdata/scripts/crafting.lua new file mode 100644 index 0000000..e893982 --- /dev/null +++ b/example/serverdata/scripts/crafting.lua @@ -0,0 +1,99 @@ +-------------------------------------------------------------
+-- Example crafting script file --
+-- --
+-- This file allows you to implement your own crafting --
+-- system. --
+----------------------------------------------------------------------------------
+-- Copyright 2011 Manasource Development Team --
+-- --
+-- This file is part of Manasource. --
+-- --
+-- Manasource is free software; you can redistribute it and/or modify it --
+-- under the terms of the GNU General Public License as published by the Free --
+-- Software Foundation; either version 2 of the License, or any later version. --
+----------------------------------------------------------------------------------
+
+-- This function is called by the game engine when a character tries to craft
+-- something from items in its inventory
+function on_craft(ch, recipe)
+ -- ch is the crafting character
+ --
+ -- recipe is a table with the ingredients.
+ -- it is a common 1-based array. each element of this array is a table with the
+ -- two keys "id" and "amount".
+ -- The engine has already checked that the character owns enough of those things,
+ -- so you needn't do this again.
+
+ -- uncomment one (but not both!) of the following three lines to enable the
+ -- example crafting systems
+
+ mana.chatmessage(ch, "There is no crafting in this game world.")
+ --craft_strict(ch, recipe)
+ --craft_lax(ch, recipe)
+end
+
+
+-- a primitive example crafting system which cares about item order and exact amount
+function craft_strict(ch, recipe)
+ if (recipe[1].id == 8 and recipe[1].amount == 2 and -- has two iron
+ recipe[2].id == 9 and recipe[2].amount == 1) -- and one wood
+ then
+ mana.chr_inv_change(ch,
+ 8, -2, --take away the iron
+ 9, -1, --take away the wood
+ 5, 1 ) -- give a sword
+ return
+ mana.chatmessage(ch, "You've crafted a sword")
+ end
+ mana.chatmessage(ch, "This wouldn't create anything useful")
+end
+
+-- a primitive example crafting system which doesn't care about item order
+-- and amount. It even allows to mention the same item multiple times.
+function craft_lax(ch, recipe)
+ recipe = make_condensed_and_sorted_item_list(recipe)
+
+ if (recipe[1].id == 8 and recipe[1].amount >= 2 and -- has at least two iron
+ recipe[2].id == 9 and recipe[2].amount >= 1) -- and at least one wood
+ then
+ mana.chr_inv_change(ch,
+ 8, -2, --take away the iron
+ 9, -1, --take away the wood
+ 5, 1 ) -- give a sword
+ return
+ mana.chatmessage(ch, "You've crafted a sword")
+ end
+ mana.chatmessage(ch, "This wouldn't create anything useful")
+end
+
+-- this turns multiple occurences of the same item into one by adding up
+-- their amounts and sorts the recipe by item ID.
+-- This makes stuff a lot easier when your crafting system isn't supposed to care
+-- about the order items are in.
+function make_condensed_and_sorted_item_list(recipe)
+
+ local condensed = {}
+ for index, item in pairs(recipe) do
+ if condensed[item.id] == nil then
+ condensed[item.id] = item.amount
+ else
+ condensed[item.id] = condensed[item.id] + item.amount
+ end
+ end
+
+ local sorted = {}
+ for id, amount in pairs(condensed) do
+ local item = {}
+ item.id = id
+ item.amount = amount
+ table.insert(sorted, item)
+ end
+
+ table.sort(sorted, function(item1, item2)
+ return (item1.id < item2.id)
+ end
+ )
+
+ return sorted
+
+end
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