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|
--
-- Agario Checkers - Checkers-like game with inspiration from agar.io
-- Copyright (C) 2017 Delwink, LLC
--
-- Redistributions, modified or unmodified, in whole or in part, must retain
-- applicable copyright or other legal privilege notices, these conditions, and
-- the following license terms and disclaimer. Subject to these conditions,
-- the holder(s) of copyright or other legal privileges, author(s) or
-- assembler(s), and contributors of this work hereby grant to any person who
-- obtains a copy of this work in any form:
--
-- 1. Permission to reproduce, modify, distribute, publish, sell, sublicense,
-- use, and/or otherwise deal in the licensed material without restriction.
--
-- 2. A perpetual, worldwide, non-exclusive, royalty-free, irrevocable patent
-- license to reproduce, modify, distribute, publish, sell, use, and/or
-- otherwise deal in the licensed material without restriction, for any and all
-- patents:
--
-- a. Held by each such holder of copyright or other legal privilege,
-- author or assembler, or contributor, necessarily infringed by the
-- contributions alone or by combination with the work, of that privilege
-- holder, author or assembler, or contributor.
--
-- b. Necessarily infringed by the work at the time that holder of
-- copyright or other privilege, author or assembler, or contributor made
-- any contribution to the work.
--
-- NO WARRANTY OF ANY KIND IS IMPLIED BY, OR SHOULD BE INFERRED FROM, THIS
-- LICENSE OR THE ACT OF DISTRIBUTION UNDER THE TERMS OF THIS LICENSE,
-- INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
-- A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS,
-- ASSEMBLERS, OR HOLDERS OF COPYRIGHT OR OTHER LEGAL PRIVILEGE BE LIABLE FOR
-- ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN ACTION OF CONTRACT, TORT,
-- OR OTHERWISE ARISING FROM, OUT OF, OR IN CONNECTION WITH THE WORK OR THE USE
-- OF OR OTHER DEALINGS IN THE WORK.
--
require 'board'
require 'class'
require 'geom'
require 'piece'
require 'util'
local socket = require 'socket'
local finished = false
local AFFIRMATIVE = 'Y\nEND\n'
local NEGATIVE = 'N\nEND\n'
local ERR_ARGNUM = 'ERR ARGNUM\nEND\n'
local ERR_SYNTAX = 'ERR SYNTAX\nEND\n'
Server = class()
function Server:__init(server, socks, comm)
self._srv = server
self._socks = socks
self._names = { 'Player 1', 'Player 2' }
self._rooms = { 1, 0 }
self._queue = { {}, {} }
self._updatequeue = { {}, {} }
self._comm = comm
self._done = false
self:_resetgame()
end
function Server:_cleanup()
for _,sock in ipairs(self._socks) do
sock:send('SHUTDOWN\nEND\n')
sock:close()
end
self._srv:close()
end
function Server:_updateall(lines)
for _,queue in ipairs(self._updatequeue) do
for __,line in ipairs(lines) do
table.insert(queue, line)
end
end
end
function Server:_addpiece(new)
for i,piece in ipairs(self._pieces) do
if not piece then
new.id = i
self._pieces[i] = new
self:_updateall({'PIECE ' .. i,
'SIZE ' .. i .. ' ' .. new.size,
'TEAM ' .. i .. ' ' .. new.team,
'MOVE ' .. i .. ' ' .. new.x .. ' ' .. new.y})
return
end
end
end
function Server:_initrow(start, y)
local board_dim = 8
for i=0,3 do
local x = start + i * 2
self:_addpiece(Piece(x, y, 1))
self:_addpiece(Piece(board_dim - (x - 1), board_dim - (y - 1), 2))
end
end
function Server:_resetgame()
self._pieces = {}
for _ = 1,32 do
table.insert(self._pieces, nil)
end
self._updatequeue[1] = { 'CLEARBOARD' }
self._updatequeue[2] = { 'CLEARBOARD' }
self:_initrow(2, 1)
self:_initrow(1, 2)
self:_initrow(2, 3)
self._turn = 1
self._selected = nil
self._targetspace = nil
self._winner = nil
end
function Server:_toggleturn()
if self._turn == 1 then
self._turn = 2
else
self._turn = 1
end
end
function Server:_getoccupying(x, y)
for _,piece in ipairs(self._pieces) do
if piece.x == x and piece.y == y then
return piece
end
end
end
function Server:_trymove(quad, distance, sizemod)
if not sizemod then
sizemode = 1
end
local step1
if distance == 2 then
step1 = self._trymove(quad, 1, sizemod)
if not step1 then
return nil
end
end
local x, y
if quad == 1 then
x = self._selected.x + distance
y = self._selected.y + distance
elseif quad == 2 then
x = self._selected.x - distance
y = self._selected.y + distance
elseif quad == 3 then
x = self._selected.x - distance
y = self._selected.y - distance
else
x = self._selected.x + distance
y = self._selected.y - distance
end
if not self._selected:canmove(x, y) then
return nil
end
local newsize = self._selected.size + sizemod
if distance == 2 then
local o = self._getoccupying(step1.x, step1.y)
if o then
newsize = newsize + o.size
end
end
local o = self:_getoccupying(x, y)
if o and o.team ~= self._selected.team and o.size >= newsize then
return nil
end
return {x=x, y=y, dist=distance, step1=step1}
end
function Server:_getmove(dx, dy, wantsplit)
local quad = getquadrant(dx, dy)
if not quad then
return nil
end
if wantsplit then
if self._selected.size < 10 then
return nil
end
return self:_trymove(quad, 2, -self._selected.size / 2)
end
return self:_trymove(quad, 1)
end
function Server:_king(piece)
self:_updateall({'KING ' .. piece.id})
piece.king = true
end
function Server:_singlemove(move, piece)
local o = self:_getoccupying(move.x, move.y)
if o then
piece.size = piece.size + o.size
self:_updateall({'ABSORB ' .. piece.id .. ' ' .. o.id,
'SIZE ' .. piece.id .. ' ' .. piece.size})
if o.team == piece.team and o.king then
self:_king(piece)
end
self._pieces[o.id] = nil
end
self:_updateall({'MOVE ' .. piece.id .. ' ' .. move.x .. ' ' .. move.y})
piece:move(move.x, move.y)
if ((piece.y == 1 and piece.team == 2)
or (piece.y == 8 and piece.team == 1)) then
self:_king(piece)
end
end
function Server:_move(move, wantsplit)
local piece = self._selected
self:_updateall({'DESELECTED'})
self._selected = nil
if wantsplit then
local prev = piece
piece = Piece(piece.x, piece.y, piece.team)
prev.size = prev.size / 2
piece.size = prev.size
self:_addpiece(piece)
if move.dist == 2 then
self:_singlemove(move.step1, piece)
end
end
self:_singlemove(move, piece)
end
function Server:_sendall(msg)
for _,sock in ipairs(self._socks) do
sock:send(msg)
end
end
function Server:_process()
local other = 2
for this,queue in ipairs(self._queue) do
for _,line in ipairs(queue) do
if line == 'DC' then
table.insert(self._updatequeue[other], 'DC')
self._done = true
return
elseif line:startswith('SETNAME') then
line = line:split(' ')
if #line < 2 then
self._socks[this]:send(ERR_ARGNUM)
break
end
local name = table.concat(line, ' ', 2)
if name == self._names[other] then
self._socks[this]:send('ERR NAMETAKEN\nEND\n')
elseif #name > 16 then
self._socks[this]:send('ERR NAMELEN\nEND\n')
elseif name:find('"') then
self._socks[this]:send('ERR NAMECHAR\nEND\n')
elseif self._rooms[this] == 1 then
self._socks[this]:send('ERR INGAME\nEND\n')
else
self._names[this] = name
self._socks[this]:send(AFFIRMATIVE)
end
elseif line == 'GETROOMS' then
local players = 1
if self._rooms[2] == 1 then
players = 2
end
self._socks[this]:send('1 "' .. self._names[1] .. '" '
.. players .. '\nEND\n')
elseif line:startswith('JOIN') then
line = line:split(' ')
if #line ~= 2 then
self._socks[this]:send(ERR_ARGNUM)
break
end
if line[2] ~= '1' then
self._socks[this]:send('ERR ROOMNUM\nEND\n')
else
self._rooms[this] = 1
self._socks[this]:send('FOE "' .. self._names[other]
.. '"\nEND\n')
self._socks[other]:send('FOE "' .. self._names[this]
.. '"\nEND\n')
end
elseif line == 'MAKEROOM' then
self._socks[this]:send(NEGATIVE)
elseif line == 'TEAM' then
self._socks[this]:send(this .. '\nEND\n')
elseif line:startswith('SELECT') then
if self._turn ~= this then
self._socks[this]:send(NEGATIVE)
break
end
line = line:split(' ')
if #line ~= 2 then
self._socks[this]:send(ERR_ARGNUM)
break
end
local i = tonumber(line[2])
if not i then
self._socks[this]:send(ERR_SYNTAX)
elseif self._pieces[i].team ~= this then
self._socks[this]:send(NEGATIVE)
else
self._selected = self._pieces[i]
self._socks[this]:send(AFFIRMATIVE)
self:_updateall({'SELECTED ' .. i})
end
elseif line == 'DESELECT' then
if self._turn ~= this then
self._socks[this]:send(NEGATIVE)
else
self._selected = nil
self._socks[this]:send(AFFIRMATIVE)
self:_updateall({'DESELECTED'})
end
elseif (line:startswith('TRYMOVE')
or line:startswith('TRYSPLIT')
or line:startswith('MOVE')
or line:startswith('SPLIT')) then
line = line:split(' ')
if self._turn ~= this or not self._selected then
self._socks[this]:send(NEGATIVE)
elseif #line ~= 3 then
self._socks[this]:send(ERR_ARGNUM)
else
local dx = tonumber(line[2])
local dy = tonumber(line[3])
if not dx or not dy then
self._socks[this]:send(ERR_SYNTAX)
else
local split = line[1] == 'TRYSPLIT' or line[1] == 'SPLIT'
local move = self:_getmove(dx, dy, split)
if not move then
self._socks[this]:send(NEGATIVE)
self:_updateall({'UNPOINT'})
break
end
self._socks[this]:send(AFFIRMATIVE)
if line[1]:startswith('TRY') then
self:_updateall({'POINT ' .. move.x .. ' ' .. move.y})
else
self:_move(move, split)
end
end
end
elseif line == 'FORFEIT' then
self._sendall('FORFEIT ' .. this .. '\nSHUTDOWN\nEND\n')
self._done = true
return
elseif line == 'UPDATE' then
table.insert(self._updatequeue[this], 'END')
self._socks[this]:send(table.concat(self._updatequeue, '\n')
.. '\n')
self._updatequeue[this] = {}
else
self._socks[this]:send('ERR COMMAND\nEND\n')
end
end
self._queue[i] = {}
other = 1
end
end
function Server:run()
local err = nil
while not self._done do
local recvable, _, err = socket.select(self._socks, {}, 1000)
for _,r in ipairs(recvable) do
if r == self._socks[1] then
table.insert(self._queue[1], r:recv())
else
table.insert(self._queue[2], r:recv())
end
end
self:_process()
end
self:_cleanup()
return err
end
local function respondlocal(str, comm, server, socks)
if str == 'quit' then
for _,sock in ipairs(socks) do
sock:send('SHUTDOWN\nEND\n')
sock:close()
end
server:close()
finished = true
end
end
local function servermain()
local comm = love.thread.getChannel('server')
comm:supply('ready')
local server = socket.bind('*', comm:demand())
if not server then
comm:supply('fail bind')
return
end
local ip, port = server:getsockname()
comm:supply(string(ip) .. ' ' .. string(port))
server:settimeout(1000)
local socks = {}
while #socks < 2 do
local sock = server:accept()
if sock then
sock:settimeout(1000)
local line, err = sock:receive()
if line then
if line == 'AGARIO CHECKERS CLIENT' then
sock:send('AGARIO CHECKERS SERVER\n')
else
err = 'protocol'
end
end
if err then
for _,sock in ipairs(socks) do
sock:send('SHUTDOWN\nEND\n')
sock:close()
end
server:close()
comm:supply('err ' .. err)
return
end
end
local str = comm:pop()
if str then
respondlocal(str, comm, server, socks)
if finished then
return
end
end
end
server = Server(server, socks, comm)
local err = server:run()
if err then
comm:supply('err ' .. err)
else
comm:supply('done')
end
end
servermain()
|