connected game to web server

gauss-turing/game/gauss_turing.py

@@ -2,11 +2,15 @@ import numpy as np
 import random
 import pygame
 import os
+import threading
+
+from webapp import app
 
 from event_server_comm import move_grid
 
 BLACK = np.array([0, 0, 0], dtype=np.uint8)
 WHITE = np.array([255, 255, 255], dtype=np.uint8)
+GRAY = np.array([200, 200, 200], dtype=np.uint8)
 RED = np.array([255, 0, 0], dtype=np.uint8)
 BLUE = np.array([0, 0, 255], dtype=np.uint8)
 YELLOW = np.array([255, 255, 0], dtype=np.uint8)
@@ -26,7 +30,7 @@ tiledt = np.dtype([('x', np.uint8), ('y', np.uint8), ('color', np.uint8, 3), ('s
 
 
 class Board:
-    valid_colors = [WHITE, RED, BLUE]
+    valid_colors = [GRAY, RED, BLUE]
 
     def __init__(self, dim_x, dim_y):
         self.tiles = np.zeros((dim_y, dim_x), dtype=tiledt)
@@ -80,11 +84,12 @@ class Robot:
     }
 
 
-    def __init__(self, x, y, orientation):
+    def __init__(self, x, y, orientation, use_real_robot=False):
         self.x = x
         self.y = y
         self.orientation = orientation
         self.position_changed = False
+        self.use_real_robot = use_real_robot
 
     def get_forward_coordinates(self):
         # get the coordinates of the neighboring tile in the given direction
@@ -112,7 +117,8 @@ class Robot:
         return robot_surf
 
     def update_pos(self, dimx, dimy):
-        move_grid(self.x, self.y, self.orientation, dimx, dimy)
+        if self.use_real_robot:
+            move_grid(self.x, self.y, self.orientation, dimx, dimy)
         self.position_changed = False
 
     def __repr__(self):
@@ -122,7 +128,7 @@ class Robot:
 class Command:
     valid_actions = {'forward', 'left', 'right', 'P0', '-'}
 
-    def __init__(self, action=None, color=WHITE):
+    def __init__(self, action=None, color=GRAY):
         if not (action in Command.valid_actions and any([np.all(color == c) for c in Board.valid_colors])):
             raise ValueError("invalid values for command")
         self.action = action
@@ -157,7 +163,7 @@ class Programmer:
     def __init__(self, prg):
         self.prg = prg
         self.available_inputs = [Command('forward'), Command('left'), Command('right'), Command('P0'),
-                                 Command('-', color=RED), Command('-', color=BLUE), Command('-', color=WHITE)]
+                                 Command('-', color=RED), Command('-', color=BLUE), Command('-', color=GRAY)]
         self.command_to_edit = 0
         self.screen_rect = None
 
@@ -196,6 +202,8 @@ class Program:
         self.screen_rect = None
 
     def step(self, state='running'):
+        if self.prg_counter >= len(self.cmds):
+            return 'game_over'
         cmd = self.cmds[self.prg_counter]
         self.prg_counter += 1
 
@@ -207,7 +215,7 @@ class Program:
         tile = self.board.tiles[y, x]
 
         # apply next instruction of the program
-        if np.all(cmd.color == WHITE) or np.all(cmd.color == tile['color']):
+        if np.all(cmd.color == GRAY) or np.all(cmd.color == tile['color']):
             # matching color -> execute command
             if cmd.action == 'forward':
                 ynew, xnew = self.robot.get_forward_coordinates()
@@ -264,7 +272,7 @@ class Program:
                 cmd_surf = cmd.render(scale_fac)
             else:
                 cmd_surf = pygame.Surface((scale_fac,scale_fac))
-                cmd_surf.fill(WHITE)
+                cmd_surf.fill(GRAY)
             if prg_counter is not None and i == prg_counter:
                 pygame.draw.rect(cmd_surf, tuple(GREEN), (0, 0, scale_fac, scale_fac), 5)
             prg_surf.blit(cmd_surf, (i * scale_fac, 0, scale_fac, scale_fac))
@@ -280,8 +288,8 @@ class Program:
 
 
 class Game:
-    def __init__(self, dimx, dimy, robotx, roboty):
+    def __init__(self, dimx, dimy, robotx, roboty, use_real_robot=False):
-        self.robot = Robot(x=robotx, y=roboty, orientation='v')
+        self.robot = Robot(x=robotx, y=roboty, orientation='v', use_real_robot=use_real_robot)
         self.board = Board(dimx, dimy)
         coin1x = np.random.randint(0, dimx)
         coin1y = np.random.randint(0, dimy)
@@ -290,7 +298,7 @@ class Game:
 
         # TODO fix number of commands at 5
         self.cmds = [Command('forward'), Command('left', color=RED), Command('left', color=BLUE), Command('P0'), Command('-')]
-        self.state = 'won'
+        self.state = 'reset'
 
         self.prg = Program(self.robot, self.board, self.cmds)
 
@@ -450,6 +458,12 @@ class Game:
                         self.state = self.prg.step(self.state)
                 elif event.key == pygame.K_r:
                     self.state = 'reset'
+            elif event.type == pygame.USEREVENT:
+                for i, cmd in enumerate(event.cmds):
+                    self.cmds[i].action = cmd.action
+                    self.cmds[i].color = np.array(cmd.color, dtype=np.uint8)
+                self.reset()
+                self.state = 'running'
         return self.state
 
     def reset(self):
@@ -488,10 +502,14 @@ class Game:
             pygame.time.wait(100)
 
 if __name__ == "__main__":
+    # launch webapp in thread
+    webserver_thread = threading.Thread(target=app.run, kwargs={'host': '0.0.0.0', 'port': 5000})
+    webserver_thread.start()
+
     seed = 2
     random.seed(seed)
     np.random.seed(seed)
-    game = Game(dimx=7, dimy=4, robotx=3, roboty=1)
+    game = Game(dimx=7, dimy=4, robotx=3, roboty=1, use_real_robot=False)
     game.run()
 
 # TODOs

gauss-turing/game/static/style.css

@@ -0,0 +1,105 @@
+.main-canvas {
+    outline: 1px solid #dddddd;;
+    width: 500px;
+    height: 220px;
+    margin: 50px auto 0;
+    position: relative;
+}
+
+.register {
+    outline: 3px dashed #dddddd;;
+    width: 120px;
+    height: 240px;
+    margin: 0px auto 0;
+    position: relative;
+}
+
+.box{
+    width: 62px;
+    height: 100px;
+    position: absolute !important;
+    top: 100px;
+    font-size: 15px;
+    color: #ffffff;
+    line-height: 25px;
+    text-align: center;
+    cursor: move;
+}
+
+.robotOrientation {
+    width: 75px;
+    height: 75px;
+}
+
+.robotOrientation90 {
+    width: 75px;
+    height: 75px;
+        -webkit-transform: rotate(90deg);
+    -moz-transform: rotate(90deg);
+    -o-transform: rotate(90deg);
+    -ms-transform: rotate(90deg);
+    transform: rotate(90deg);
+}
+
+.robotOrientation180 {
+    width: 75px;
+    height: 75px;
+    -webkit-transform: rotate(180deg);
+    -moz-transform: rotate(180deg);
+    -o-transform: rotate(180deg);
+    -ms-transform: rotate(180deg);
+    transform: rotate(180deg);
+}
+
+.robotOrientation270 {
+    width: 75px;
+    height: 75px;
+        -webkit-transform: rotate(270deg);
+    -moz-transform: rotate(270deg);
+    -o-transform: rotate(270deg);
+    -ms-transform: rotate(270deg);
+    transform: rotate(270deg);
+}
+
+.rotate90 {
+    width: 100px;
+    height: 100px;
+    -webkit-transform: rotate(90deg);
+    -moz-transform: rotate(90deg);
+    -o-transform: rotate(90deg);
+    -ms-transform: rotate(90deg);
+    transform: rotate(90deg);
+}
+
+.rotate180 {
+    -webkit-transform: rotate(180deg);
+    -moz-transform: rotate(180deg);
+    -o-transform: rotate(180deg);
+    -ms-transform: rotate(180deg);
+    transform: rotate(180deg);
+}
+
+.rotate270 {
+    -webkit-transform: rotate(270deg);
+    -moz-transform: rotate(270deg);
+    -o-transform: rotate(270deg);
+    -ms-transform: rotate(270deg);
+    transform: rotate(270deg);
+}
+
+.top-buffer { margin-top:20px; }
+
+
+.card0 { left: 0; top: 0;  background-color: #E74C3C;     position: absolute !important;
+}
+.card1 { left: 100px; top: 0; background-color: #8E44AD;     position: absolute !important;
+}
+.card2 { left: 200px; top: 0; background-color: #5DADE2; }
+.card3 { left: 300px; top: 0; background-color: #1ABC9C; }
+.card4 { left: 400px; top: 0; background-color: #F1C40F; }
+.card5 { left: 50px; top: 120px; background-color: #F39C12; }
+.card6 { left: 150px; top: 120px; background-color: #34495E; }
+.card7 { left: 250px; top: 120px; background-color: #FF00FF; }
+.card8 { left: 350px; top: 120px; background-color: #008080; }
+
+.card_hidden { background-color: #dddddd; }

gauss-turing/game/templates/drag_example.html

@@ -0,0 +1,287 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <title>Drag</title>
+
+    <script src="static/jquery-3.5.1.js"></script>
+    <script src="static/jquery-ui.min.js"></script>
+    <script src="static/bootstrap.min.js"></script>
+
+    <link rel="stylesheet" href="static/bootstrap.css">
+    <link rel="stylesheet" href="static/style.css">
+
+
+</head>
+<body>
+<!-- container -->
+<div class="container">
+    <!-- current program -->
+    <div class="row top-buffer">
+        Aktuelles Programm:
+        <div class="main-canvas">
+            {% for cmd in current_program %}
+                <div class="box card{{ loop.index0 }}"  id="prg_cmd{{ loop.index0 }}" data-action="{{ cmd.action }}" data-color="{{ cmd.color }}" data-img="prg_cmd_img{{ loop.index0 }}"
+                     style="background-color: rgba({{ cmd.color[0] }},{{ cmd.color[1] }},{{ cmd.color[2] }},0.85)">
+                    <img id="prg_cmd_img{{ loop.index0 }}" src="static/{{ cmd.action }}.png">
+                    {{ loop.index0 }}
+                </div>
+            {% endfor %}
+        </div>
+    </div>
+
+    <!-- possible commands -->
+    <div class="row top-buffer">
+        Mögliche Befehle:
+        <div class="main-canvas">
+            {% for cmd in valid_commands %}
+                <div class="box card{{ loop.index0 }}"  id="valid_cmd{{ loop.index0 }}" data-action="{{ cmd.action }}" data-color="{{ cmd.color }}" data-img="valid_cmd_img{{ loop.index0 }}"
+                     style="background-color: rgba({{ cmd.color[0] }},{{ cmd.color[1] }},{{ cmd.color[2] }},0.85)">
+                    <img id="valid_cmd_img{{ loop.index0 }}" src="static/{{ cmd.action }}.png">
+                </div>
+            {% endfor %}
+        </div>
+    </div>
+
+<!--
+    <div class="row top-buffer">
+    {% if robot_info is none %}
+        <div class="col-sm">
+        <label for="inputRobotX">X Position:</label>
+        <input class="form-control" type="number" id="inputRobotX" name="robot_x" min="1" max="13" value="1">
+        <br>
+        <label for="inputRobotY">Y Position:</label>
+        <input class="form-control" type="number" id="inputRobotY" name="robot_y" min="1" max="7" value="1">
+        </div>
+        <div class="col-sm">
+        <label for="orientation">Blickrichtung:</label><br>
+        <img id="orientation" class="robotOrientation" src="/static/orientation.png" alt="0">
+        <input hidden id="inputRobotOrientation" value=">" readonly>
+        </div>
+        <div class="col-sm">
+        <label for="inputRobotID">Roboter ID:</label>
+        <select name="robotID" class="form-control" id="inputRobotID">
+            <option value="11">11</option>
+            <option value="12">12</option>
+            <option value="13">13</option>
+            <option value="14">14</option>
+        </select>
+        <label for="outputRobotFlags">Flaggen:</label><br>
+        {% for f in ['a', 'b', 'c', 'd'] %}
+            <input type="checkbox" class="form-check-input" id="flag_{{ f }}" onclick="return false;">
+            <label class="form-check-label" for="flag_{{ f }}">{{ f }}</label><br>
+        {% endfor %}
+        </div>
+    {% else %}
+        <div class="col-sm">
+        <label for="outputRobotX">X Position:</label>
+        <input class="form-control" type="number" id="outputRobotX" name="robot_x" min="1" max="12" value="{{ robot_info[0] }}" readonly>
+        <br>
+        <label for="outputRobotY">Y Position:</label>
+        <input class="form-control" type="number" id="outputRobotY" name="robot_y" min="1" max="6" value="{{ robot_info[1] }}" readonly>
+        </div>
+        <div class="col-sm">
+        <label for="outputOrientation">Blickrichtung:</label><br>
+        {% if robot_info[2] == '>' %}
+            <img id="outputOrientation" class="robotOrientation" src="/static/orientation.png" alt="0">
+        {% elif robot_info[2] == 'v' %}
+            <img id="outputOrientation" class="robotOrientation90" src="/static/orientation.png" alt="0">
+        {% elif robot_info[2] == '<' %}
+            <img id="outputOrientation" class="robotOrientation180" src="/static/orientation.png" alt="0">
+        {% elif robot_info[2] == '^' %}
+            <img id="outputOrientation" class="robotOrientation270" src="/static/orientation.png" alt="0">
+        {% endif %}
+        <br>
+        <label for="outputRobotDmg">Schaden:</label><br>
+        <input class="form-control" name="robotDmg" id="outputRobotDmg" value="{{ robot_info[4] }}" readonly>
+        </div>
+        <div class="col-sm">
+        <label for="outputRobotID">Roboter ID:</label>
+        <input class="form-control" name="robotID" id="outputRobotID" value="{{ robot_info[3] }}" readonly>
+        <label for="outputRobotFlags">Flaggen:</label><br>
+        {% for f in ['a', 'b', 'c', 'd'] %}
+            {% if f in robot_info[5] %}
+                <input type="checkbox" class="form-check-input" id="flag_{{ f }}" checked onclick="return false;">
+            {% else %}
+                <input type="checkbox" class="form-check-input" id="flag_{{ f }}" onclick="return false;">
+            {% endif %}
+            <label class="form-check-label" for="flag_{{ f }}">{{ f }}</label><br>
+        {% endfor %}
+        </div>
+    {% endif %}
+        </div>
+-->
+    <div class="row top-buffer">
+        <div class="col-sm">
+            <input class="btn btn-primary" id="btnSubmit" type="submit" value="Befehle abschicken" />
+        </div>
+        <div class="col-sm">
+            <div id = "alert_placeholder"></div>
+        </div>
+    </div>
+
+    <div class="row top-buffer">
+            Viel Spaß beim Spielen!
+    </div>
+</div><!-- container -->
+
+
+<script>
+    $(document).ready(function () {
+
+        var please_wait = $(".notification").hide();
+
+    var box = $(".box");
+    var mainCanvas = $(".main-canvas");
+
+    var orientation_icon = $("#orientation");
+    var orientation_input = $("#inputRobotOrientation");
+
+    bootstrap_alert = function() {};
+    bootstrap_alert.warning = function(message) {
+            $('#alert_placeholder').html('<div class="alert alert-primary"><a class="close" data-dismiss="alert">×</a><span>'+message+'</span></div>')
+        };
+
+    orientation_icon.click(function () {
+        if (this.alt === "0") {
+            this.alt = "90";
+            $("#inputRobotOrientation").val("v");
+            //document.getElementById("inputRobotOrientation").value = "v";
+        }
+        else if (this.alt === "90") {
+            this.alt = "180";
+            $("#inputRobotOrientation").val("<");
+            //document.getElementById("inputRobotOrientation").value = "<";
+        }
+        else if (this.alt === "180") {
+            this.alt = "270";
+            $("#inputRobotOrientation").val("^");
+            //document.getElementById("inputRobotOrientation").value = "^";
+        }
+        else if (this.alt === "270") {
+            this.alt = "0";
+            $("#inputRobotOrientation").val(">");
+            //document.getElementById("inputRobotOrientation").value = ">";
+        }
+       $(this).css({'transform' : 'rotate('+ this.alt +'deg)'});
+    });
+
+
+    $("#btnSubmit").click(function () {
+           //alert("button");
+        var cmds = {
+            {% for i in range(5) %}
+                "cmd{{ i }}": {"color": document.getElementById("prg_cmd{{ i }}").getAttribute("data-color"),
+                               "action": document.getElementById("prg_cmd{{ i }}").getAttribute("data-action")},
+            {% endfor %}
+        }
+            //bootstrap_alert.warning('Bitte warten bis alle Spieler ihre Aktion gewählt haben!'); //$(please_wait).show();
+    var cmds_json = JSON.stringify(cmds);
+
+            $.post("/send_cmds", {"cmds_json": cmds_json}, function (data) {
+                console.log(data);
+                /*
+                if (data === 'OK') {
+                    location.reload();  // reload page to get new cards for next round
+                }
+                else {
+                    console.log('waiting...')
+                    $.get("/send_cmds", "", function (data) {
+                         if (data === 'OK') {
+                            location.reload();  // reload page to get new cards for next round
+                        }
+                    })
+                }
+                */
+            });
+
+        });
+
+    /*
+    box.draggable({
+        containment: mainCanvas,
+        helper: "clone",
+
+        start: function () {
+            $(this).css({
+                opacity: 0
+            });
+
+            $(".box").css("z-index", "0");
+        },
+
+        stop: function () {
+            $(this).css({
+                opacity: 1
+            });
+        }
+    });
+
+    box.droppable({
+        accept: box,
+
+        drop: function (event, ui) {
+            var draggable = ui.draggable;
+            var droppable = $(this);
+            var dragPos = draggable.position();
+            var dropPos = droppable.position();
+
+            var cmds = [ui.draggable.attr('name').toString(), $(this).attr('name')]
+
+            //console.log(dragPos);
+            //console.log(dropPos);
+
+            //console.log($(cmds));
+            // notify server that cards have been swapped
+            $.post(url='/', {drag: ui.draggable.attr('name'), drop: $(this).attr('name')});
+
+            draggable.css({
+                left: dropPos.left + "px",
+                top: dropPos.top + "px",
+                "z-index": 20
+            });
+
+            droppable.css("z-index", 10).animate({
+                left: dragPos.left,
+                top: dragPos.top
+            });
+        }
+    });
+    */
+
+    var edited_command = null;
+
+    box.click(function () {
+        //debugger
+        if ( this.id.includes('prg_cmd') ) {
+            // program card clicked -> select clicked card for editing
+            edited_command = this;
+        }
+        else if (this.id.includes('valid_cmd')) {
+            // progamming card clicked -> edit currently selected card
+            var this_card_action = this.getAttribute('data-action');
+            var this_card_color = this.getAttribute('data-color');
+            if (!!edited_command) { // only if there is a card selected
+                console.log("editing command " + edited_command);
+                if (this_card_action === "-") {
+                    // set color
+                    edited_command.setAttribute("data-color", this_card_color);
+                    edited_command.style["backgroundColor"] = this.style["backgroundColor"];
+                }
+                else {
+                    // set action
+                    edited_command.setAttribute("data-action", this_card_action)
+                    var edited_cmd_img = document.getElementById(edited_command.getAttribute("data-img"));
+                    var prg_img = document.getElementById(this.getAttribute("data-img"));
+                    edited_cmd_img.src = prg_img.src;
+                }
+            }
+        }
+    });
+
+});
+</script>
+
+</body>
+</html>

gauss-turing/game/webapp.py

@@ -0,0 +1,163 @@
+from flask import Flask, render_template, request, session, make_response
+import socket
+import time
+import numpy as np
+from playsound import playsound
+from itertools import zip_longest
+import random
+import json
+import pygame
+
+app = Flask(__name__)
+app.secret_key = b'RoboRallyRolling'
+
+probabilities = [0.21428571428571427, 0.14285714285714285, 0.07142857142857142, 0.07142857142857142,
+                 0.21428571428571427, 0.21428571428571427, 0.07142857142857142]
+
+#deck = roborally.CardDeck()
+
+class Cmd:
+    possible_moves = ['forward', 'left', 'right', 'P0']
+    possible_colors = [(200,200,200), (255, 0, 0), (0,0,255)]
+
+    def __init__(self, action, color):
+        self.action = action
+        self.color = color
+
+    def __str__(self):
+        return "Cmd No. " + self.action
+
+    def __repr__(self):
+        return self.action + " " + str(self.color)
+
+
+available_robots = {
+    0: {'id': 11, 'ip': '192.168.1.11', 'x': 1, 'y': 2, 'orientation': '>'},
+    1: {'id': 12, 'ip': '192.168.1.12', 'x': 3, 'y': 3, 'orientation': '>'}
+}
+
+
+players = {}
+
+
+class Player:
+    MAX_PLAYERS = 4
+    player_counter = 0
+
+    def __init__(self):
+        if Player.player_counter < Player.MAX_PLAYERS:
+            self.id = Player.player_counter
+            Player.player_counter += 1
+
+            self.max_cards = 9
+
+            self.player_hand = deck.draw_cards(self.max_cards)
+            print("current hand: ", [str(c) for c in self.player_hand])
+
+            self.action_count = 5
+            self.action_chosen = False
+
+            self.initialize_robot()
+
+        else:
+            print("max players reached!")
+
+    def initialize_robot(self):
+        x = available_robots[self.id]['x']
+        y = available_robots[self.id]['y']
+        marker_id = available_robots[self.id]['id']
+        ip = available_robots[self.id]['ip']
+        orientation = available_robots[self.id]['orientation']
+        self.robot = game.board.create_robot(x, y, orientation, self.id, marker_id)
+
+        if game.comm_socket is not None:
+            cmd = f"initialize_robot, {marker_id}, {ip}, {x-1}, {y-1}, {orientation}\n"
+            game.comm_socket.sendall(cmd.encode())
+            data = game.comm_socket.recv(32)
+
+            if data.decode() == 'OK\n':
+                print("robot sucessfully initialized!")
+            else:
+                print("error: could not initialize robot!")
+                self.robot = None
+
+    def draw_new_cards(self):
+        self.player_hand += deck.draw_cards(self.max_cards - len(self.player_hand))
+
+
+@app.route('/send_cmds', methods=['POST', 'GET'])
+def send_cmds():
+    if request.method == 'POST':
+        cmds = json.loads(request.form['cmds_json'])
+
+        cmd_list = []
+        for cmd_nr in [f"cmd{i}" for i in range(5)]:
+            cmd = cmds[cmd_nr]
+            action = cmd['action']
+            color_str = cmd['color']
+            color_str = color_str.strip("()").split(",")
+            color = tuple(map(int, color_str))
+            cmd_list.append(Cmd(action, color))
+        print("got commands: ", cmd_list)
+        ev = pygame.event.Event(pygame.USEREVENT, {'cmds': cmd_list})
+        pygame.event.post(ev)
+
+        # send commands to the game
+
+        # if game.ready():
+        #     game.process_actions()
+        #
+        #     return 'OK'
+        # else:
+        #     return 'please wait'
+        return "OK"
+    elif request.method == 'GET':
+        # GET is used when we have to wait for other players to finish
+        while not game.processing_done:  # wait for other players to choose commands and processing to finish
+            pass
+
+        return 'OK'
+
+WHITE = (255, 255, 255)
+GRAY = (200, 200, 200)
+RED = (255, 0, 0)
+BLUE = (0, 0, 255)
+
+@app.route('/', methods=['GET', 'POST'])
+def hello_world():
+    prg = [Cmd('forward', GRAY), Cmd('left', GRAY), Cmd('right', BLUE),
+                   Cmd('P0', GRAY), Cmd('right', RED)]
+    valid_cmds = [Cmd('forward', WHITE), Cmd('right', WHITE), Cmd('left', WHITE),
+                  Cmd('P0', WHITE), Cmd('-', RED), Cmd('-', BLUE), Cmd('-', GRAY)]
+
+    if request.method == 'GET':
+        robot_info = None
+        return render_template('drag_example.html', current_program=prg, valid_commands=valid_cmds, robot_info=robot_info)
+    elif request.method == 'POST':
+        # print(request.form)
+
+        if request.form.get('drag') and request.form.get('drop'):
+            # swap cards in the current hand
+            i1 = int(request.form.get('drag'))  # number of first card
+            i2 = int(request.form.get('drop'))  # number of second card
+
+            card1 = deck.deck[i1]  # get card by number
+            card2 = deck.deck[i2]
+
+            print("swapping {} and {}".format(card1, card2))
+
+            j1 = player_hand.index(card1)  # get index of card in the hand
+            j2 = player_hand.index(card2)
+
+            player_hand[j1], player_hand[j2] = player_hand[j2], player_hand[j1]  # swap the cards in the list
+
+            # print("current hand: ", [str(c) for c in player_hand[player_id]])
+
+            return 'OK'
+        else:
+            return render_template('drag_example.html', cmds=player_hand, player_id=player_id)
+
+
+if __name__ == '__main__':
+    #app.run(host='192.168.1.222', port=5000)
+    app.run(host='0.0.0.0', port=5000)