capturetheflag/mods/ctf_pvp_engine/lib_chatcmdbuilder/README.md
2019-08-28 18:46:14 +01:00

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# ChatCmdBuilder
Easily create complex chat commands with no regex.
Created by rubenwardy
License: MIT
# Usage
## Registering Chat Commands
`ChatCmdBuilder.new(name, setup)` registers a new chat command called `name`.
Setup is called immediately after calling `new` to initialise subcommands.
You can set values in the chat command definition by using def:
`ChatCmdBuilder.new(name, setup, def)`.
Here is an example:
```Lua
ChatCmdBuilder.new("admin", function(cmd)
cmd:sub("kill :target", function(name, target)
local player = minetest.get_player_by_name(target)
if player then
player:set_hp(0)
return true, "Killed " .. target
else
return false, "Unable to find " .. target
end
end)
cmd:sub("move :target to :pos:pos", function(name, target, pos)
local player = minetest.get_player_by_name(target)
if player then
player:setpos(pos)
return true, "Moved " .. target .. " to " .. minetest.pos_to_string(pos)
else
return false, "Unable to find " .. target
end
end)
end, {
description = "Admin tools",
privs = {
kick = true,
ban = true
}
})
```
A player could then do `/admin kill player1` to kill player1,
or `/admin move player1 to 0,0,0` to teleport a user.
## Introduction to Routing
A route is a string. Let's look at `move :target to :pos:pos`:
* `move` and `to` are constants. They need to be there in order to match.
* `:target` and `:pos:pos` are parameters. They're passed to the function.
* The second `pos` in `:pos:pos` after `:` is the param type. `:target` has an implicit
type of `word`.
## Param Types
* `word` - default. Any string without spaces.
* `number` - Any number, including decimals
* `int` - Any integer, no decimals
* `text` - Any string
* `pos` - 1,2,3 or 1.1,2,3.4567 or (1,2,3) or 1.2, 2 ,3.2
## Build chat command function
If you don't want to register the chatcommand at this point, you can just generate
a function using `ChatCmdBuilder.build`.
For example, this is the full definition of ChatCmdBuilder.new:
```Lua
function ChatCmdBuilder.new(name, func, def)
def = def or {}
def.func = ChatCmdBuilder.build(name, func)
minetest.register_chatcommand(name, def)
end
```
## Run tests
```Bash
sudo apt-get install luajit
luajit init.lua
```