69 lines
2.4 KiB
Common Lisp
69 lines
2.4 KiB
Common Lisp
(load "~/quicklisp/setup.lisp")
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(ql:quickload '(:clack :websocket-driver :cl-bcrypt :datafly
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:sxql :alexandria :com.inuoe.jzon))
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(defpackage :mmo-server
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(:use :common-lisp :clack :websocket-driver :cl-bcrypt :datafly
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:sxql :alexandria :com.inuoe.jzon))
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(in-package :mmo-server)
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(defvar *connections* (make-hash-table))
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(defun handle-new-connection (con)
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(let ((user (make-hash-table)))
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(setf (gethash "uid" user) (random 100000))
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(setf (gethash "cmd" user) "login")
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(websocket-driver:send con (com.inuoe.jzon:stringify user))
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(remhash "cmd" user)
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(setf (gethash con *connections*) user)))
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(defun broadcast-to-room (connection message)
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(let* ((json (com.inuoe.jzon:parse message))
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(user (gethash connection *connections*))
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(cmd (gethash "cmd" json)))
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(cond
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((equalp cmd "user-login")
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(let ((copy (alexandria:copy-hash-table *connections*)))
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(remhash connection copy)
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(websocket-driver:send connection (com.inuoe.jzon:stringify copy))))
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((equalp cmd "move")
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(setf (gethash "x" user) (gethash "x" json))
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(setf (gethash "y" user) (gethash "y" json))
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(setf (gethash connection *connections*) user))
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(t
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(format t "Unknown message: ~A~%" message)))
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(loop :for con :being :the :hash-key :of *connections* :do
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(websocket-driver:send con message))))
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(defun handle-close-connection (connection)
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(let ((message (format nil "{\"cmd\":\"logout\", \"uid\":\"~a\"}"
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(gethash "uid" (gethash connection *connections*)))))
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(remhash connection *connections*)
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(loop :for con :being :the :hash-key :of *connections* :do
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(websocket-driver:send con message))))
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(defun chat-server (env)
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(let ((ws (websocket-driver:make-server env)))
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(websocket-driver:on :open ws
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(lambda () (handle-new-connection ws)))
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(websocket-driver:on :message ws
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(lambda (msg)
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(broadcast-to-room ws msg)))
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(websocket-driver:on :close ws
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(lambda (&key code reason)
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(declare (ignore code reason))
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(handle-close-connection ws)))
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(websocket-driver:on :error ws
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(lambda (error)
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(format t "Got an error: ~S~%" error)))
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(lambda (responder)
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(declare (ignore responder))
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(websocket-driver:start-connection ws))))
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(defvar *chat-handler* (clack:clackup #'chat-server :port 12345))
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