LuaLibraryParams.wiki
author Wuzzy
Fri, 27 Nov 2020 13:45:03 +0100
changeset 2200 b285ffef13e0
parent 1375 e6e1f4a61b06
permissions -rw-r--r--
Translations: Add TOC
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1375
e6e1f4a61b06 LuaLibraryParams: more summary
Wuzzy
parents: 1348
diff changeset
     1
#summary Lua library documentation of Params; for parameter handling
1348
1d75b40de896 LuaLibraryParams: labels
Wuzzy
parents: 1339
diff changeset
     2
#labels !LuaLibrary
1329
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     3
= Lua library: `Params` =
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     4
The Params library is a small library introduced in 0.9.21. It provides a function to parse the parameter string `ScriptParam` and it is intended to simplify using this string.
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     5
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     6
This library requires the parameter string to be in a certain format. It must be a comma-seperated list of kev-value pairs in the `key=value` format. Examples:
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     7
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     8
<code>speed=1</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
     9
<code>health=100, ammo=5</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    10
<code>param1=hello, param2=whatever, param3=5325.4</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    11
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    12
Using this library is by no means neccessary, you could use practically whatever syntax you wish if you write your own code for parsing.
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    13
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    14
== `parseParams()` ==
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    15
Parses `ScriptParam` and writes the result into the global table `params`. The table will follow the `key=value` pattern. Both keys and pairs are stored as string.
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    16
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    17
=== Example  ===
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    18
<code language="lua">
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    19
function onParameters()
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    20
    parseParams()
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    21
    if params["myparam1"] == "hello" then
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    22
        WriteLnToConsole("Hello World!")
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    23
    end
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    24
end</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    25
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    26
If the key-value pair `myparam1=hello` is present, this script writes “Hello World!” in the console. All these inputs would trigger the event:
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    27
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    28
<code>myparam1=hello</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    29
<code>myparam2=whatever, myparam1=hello</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    30
<code>g=4, f=56, m=56, myparam1=hello</code>
bd781e19a52d Split Lua libraries into several sub-pages
Wuzzy <almikes@aol.com>
parents:
diff changeset
    31