From 3629aebb96959afc56cf04d1f2fc4a9f03e94183 Mon Sep 17 00:00:00 2001
From: Thorbjørn Lindeijer <thorbjorn@lindeijer.nl>
Date: Sat, 25 Feb 2012 21:18:46 +0100
Subject: Merged the example client and server data

It's easier to just talk about world data and to modify it as a whole.
If there is really a need to separate it, a project can still choose to do
that (and in whatever suitable way). There is no need to enforce this
separation or to do it in our example.

Reviewed-by: Erik Schilling
---
 example/scripts/crafting.lua | 99 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 example/scripts/crafting.lua

(limited to 'example/scripts/crafting.lua')

diff --git a/example/scripts/crafting.lua b/example/scripts/crafting.lua
new file mode 100644
index 0000000..eae26a4
--- /dev/null
+++ b/example/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.chat_message(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
+        mana.chat_message(ch, "You've crafted a sword")
+        return
+    end
+    mana.chat_message(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
+        mana.chat_message(ch, "You've crafted a sword")
+        return
+    end
+    mana.chat_message(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
\ No newline at end of file
-- 
cgit