1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
# Tut 0x042
## Too many items
In the last tutorial we saw how to create lots and lots of items. Sometimes, you think to yourself "that's way too many", and when you do, you simplify. Rougelike games have a tendency to have attributes associated with items. Commonly, "blessed", "normal", and "cursed". In this tutorial, we'll be using the technique discussed in @{tut021_detouring.md} to give every item one of these stats by overrideing @{item.lua.RegisterItem} the Serialize() and DeSerialize() methods to give every item a little extra data.
garrysmod/addons/artery\_rougelite/data/artery/global/item\_attributes.txt
local itm = nrequire("item.lua")
local log = nrequire("log.lua")
local oldregister = itm.RegisterItem
function itm.RegisterItem(itemtbl)
local oldserialize = itemtbl.Serialize
local olddeserialize = itemtbl.DeSerialize
--Add a single character "b" "n" or "c" to an item's serialize to tell us if it's blessed, normal, or cursed
function itemtbl.Serialize(self)
local firstchar = "n"
if self.attribute == 1 then
firstchar = "b"
elseif self.attribute == -1
firstchar = "c"
end
return firstchar .. oldserialize(self)
end
--Note that we've added a "attribute" field to each item, which is 1 if blessed, -1 if cursed, and anything else is normal.
function itemtbl.DeSerialize(self,data)
local firstchar = string.sub(data,0,1)
local rest = string.sub(data,1)
olddeserialize(self,rest)
if firstchar == "b" then
self.attribute = 1
elseif firstchar == "c" then
self.attribute = -1
elseif firstchar == "n" then -- Notice above, the item dosn't nessessarilly need a .attribute field.
self.attribute = nil
else
log.error("Deserialized with unknown first character: " .. firstchar)
end
end
end
|
