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|
-- $Id: actions.lua 2491 2008-07-17 13:36:51Z det $
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--
-- file: actions
-- brief: hooks for GotChatMsg() and RecvFromSynced() calls
-- author: Dave Rodgers
--
-- Copyright (C) 2007.
-- Licensed under the terms of the GNU GPL, v2 or later.
--
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
if (actionHandler) then
return actionHandler
end
--------------------------------------------------------------------------------
local chatActions = {}
local syncActions = {}
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
local isSyncedCode = (SendToUnsynced ~= nil)
local function MakeWords(line)
local words = {}
for w in line:gmatch("[^%s]+") do
table.insert(words, w)
end
return words
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--
-- Insertions
--
local function InsertCallInfo(callInfoList, gadget, func, help)
local layer = gadget.ghInfo.layer
local index = 1
for i,ci in ipairs(callInfoList) do
local g = ci[2]
if (g == gadget) then
return false -- already in the table
end
if (layer >= g.ghInfo.layer) then
index = i + 1
end
end
table.insert(callInfoList, index, { func, gadget, help = help })
return true
end
local function InsertAction(map, gadget, cmd, func, help)
local callInfoList = map[cmd]
if (callInfoList == nil) then
callInfoList = {}
map[cmd] = callInfoList
end
return InsertCallInfo(callInfoList, gadget, func, help)
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--
-- Removals
--
local function RemoveCallInfo(callInfoList, gadget)
local count = 0
for i,callInfo in ipairs(callInfoList) do
local g = callInfo[2]
if (g == gadget) then
table.remove(callInfoList, i)
count = count + 1
-- break
end
end
return count
end
local function RemoveAction(map, gadget, cmd)
local callInfoList = map[cmd]
if (callInfoList == nil) then
return false
end
local count = RemoveCallInfo(callInfoList, gadget)
if (#callInfoList <= 0) then
map[cmd] = nil
end
return (count > 0)
end
local function RemoveGadgetActions(gadget)
local function clearActionList(actionMap)
for cmd, callInfoList in pairs(actionMap) do
RemoveCallInfo(callInfoList, gadget)
end
end
clearActionList(chatActions)
clearActionList(syncActions)
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--
-- Add / Remove Chat Action
--
local function AddChatAction(gadget, cmd, func, help)
return InsertAction(chatActions, gadget, cmd, func, help)
end
local function RemoveChatAction(gadget, cmd)
return RemoveAction(chatActions, gadget, cmd)
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
--
-- Add / Remove Sync Action
--
local function AddSyncAction(gadget, cmd, func, help)
return InsertAction(syncActions, gadget, cmd, func, help)
end
local function RemoveSyncAction(gadget, cmd)
return RemoveAction(syncActions, gadget, cmd)
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
local function EchoLines(msg)
for line in msg:gmatch('([^\n]+)\n?') do
Spring.Echo(line)
end
end
local function Help(playerID, cmd)
if (cmd == nil) then
-- print the list of commands, alphabetically
local sorted = {}
for name in pairs(chatActions) do
table.insert(sorted, name)
end
table.sort(sorted)
local str = Script.GetName() .. ' commands: '
for _,name in ipairs(sorted) do
str = str .. ' ' .. name
end
Spring.Echo(str)
if (isSyncedCode) then
SendToUnsynced(playerID, "help")
end
else
local callInfoList = chatActions[cmd]
if (not callInfoList) then
if (not isSyncedCode) then
Spring.Echo('unknown command: ' .. cmd)
end
else
for i,callInfo in ipairs(callInfoList) do
if (callInfo.help) then
EchoLines(cmd .. callInfo.help)
return
end
end
end
if (isSyncedCode) then
SendToUnsynced(playerID, "help " .. cmd)
end
end
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
local function GotChatMsg(msg, playerID)
local words = MakeWords(msg)
local cmd = words[1]
if (cmd == nil) then
return false
end
local callInfoList = chatActions[cmd]
if (callInfoList == nil) then
if (cmd == 'help') then
Help(playerID, words[2])
return true
end
return false
end
-- remove the command from the words list and the raw line
table.remove(words, 1)
local _,_,msg = msg:find("[%s]*[^%s]+[%s]+(.*)")
if (msg == nil) then
msg = "" -- no args
end
for i,callInfo in ipairs(callInfoList) do
local func = callInfo[1]
-- local gadget = callInfo[2]
if (func(cmd, msg, words, playerID)) then
return true
end
end
return false
end
local function RecvFromSynced(arg1,arg2,...)
if (type(arg1) == 'string') then
-- a raw sync msg
local callInfoList = syncActions[arg1]
if (callInfoList == nil) then
return false
end
for i,callInfo in ipairs(callInfoList) do
local func = callInfo[1]
-- local gadget = callInfo[2]
if (func(arg1,arg2,...)) then
return true
end
end
return false
end
return false -- unknown type
end
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
local AH = {}
actionHandler = AH -- set the global
AH.GotChatMsg = GotChatMsg
AH.RecvFromSynced = RecvFromSynced
AH.AddChatAction = AddChatAction
AH.AddSyncAction = AddSyncAction
AH.RemoveChatAction = RemoveChatAction
AH.RemoveSyncAction = RemoveSyncAction
AH.RemoveGadgetActions = RemoveGadgetActions
AH.HaveChatAction = function() return (next(chatActions) ~= nil) end
AH.HaveSyncAction = function() return (next(syncActions) ~= nil) end
return AH
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
|
