1 files changed, 55 insertions, 0 deletions
diff --git a/server/server.lua b/server/server.lua
new file mode 100644
index 0000000..fa7f82f
--- /dev/null
+++ b/server/server.lua
@@ -0,0 +1,55 @@
+local pprint = require'pprint'
+local enet = require'enet'
+local json = require'dkjson'
+local Pos = require'r.pos'
+local pairs_except = require'r.pairs_except'
+local class = require'r.class'
+
+local host = enet.host_create('*:19683')
+
+local n = 0
+local function next_name() n=n+1  return 'helen'..n end
+
+local Player = class()
+function Player.make(cls, obj) return setmetatable(obj,cls) end
+function Player.packet(self,packet_type) return json.encode     {
+	name=self.name, x=self.pos.x, y=self.pos.y, type=packet_type } end
+
+local size = 64
+local chunk = {}
+for i=1,size*size do chunk[i] = 1 == math.random(3) end
+function chunk.packet(self,packet_type)
+	local r = {type=packet_type,d={}}  for i,t in ipairs(self) do r.d[i]=t end
+	return json.encode(r) end
+
+local players = {}
+local function find_player(arg) local k,v = next(arg)
+	for pl in pairs(players) do if pl[k] == v then return pl end end end
+local function other_players(player) return pairs_except(players, player) end
+
+local function send_others(player,data)
+	data.from = player.name   local packet = json.encode(data)
+	for player2 in other_players(player) do player2.peer:send(packet) end end
+
+local function greet(player)
+	for player2 in other_players(player) do
+		player.peer:send(player2:packet'player')
+		player2.peer:send(player:packet'player') end
+	player.peer:send(chunk:packet'chunk')        end
+
+while true do  local ev = host:service(100)  if ev then
+	local peer = ev.peer  local player = find_player{peer=peer}
+	if ev.type=='connect' then
+		print('connecting',peer)
+		local player = Player{pos=Pos(0,0), peer=peer, name=next_name()}
+		players[player] = true;  greet(player)
+	elseif ev.type=='disconnect' then
+		print('disconnecting',peer)
+		send_others(player, {type='unplayer'})
+		players[player] = nil 
+	else local j = json.decode(ev.data)
+		-- todo handle json error
+		if j.type == 'move' then player.pos=Pos(j.x,j.y)  send_others(player, j)
+		end
+	end
+end end