6 <pre id="terminal" style="display: inline-block; color: white; background-color: black;"></pre>
9 let websocket_location = "ws://localhost:8000";
14 initialize: function() {
15 this.pre_el = document.getElementById("terminal");
18 for (let y = 0, x = 0; y <= this.rows; x++) {
22 this.content.push(line);
30 console.log(this.content);
34 for (let y = 0; y < this.rows; y++) {
35 let line = this.content[y].join('');
36 pre_string += line + '\n';
38 this.pre_el.textContent = pre_string;
40 write: function(start_y, start_x, msg) {
41 for (let x = start_x, i = 0; x < this.cols, i < msg.length; x++, i++) {
42 this.content[start_y][x] = msg[i];
45 drawBox: function(start_y, start_x, height, width) {
46 let end_y = start_y + height;
47 let end_x = start_x + width;
48 for (let y = start_y, x = start_x; y < end_y; x++) {
49 this.content[y][x] = ' ';
59 tokenize: function(str) {
64 for (let i = 0; i < str.length; i++) {
70 } else if (c == '\\') {
72 } else if (c == '"') {
77 } else if (c == '"') {
79 } else if (c === ' ') {
80 if (token.length > 0) {
88 if (token.length > 0) {
93 parse_yx(position_string) {
94 let coordinate_strings = position_string.split(',')
95 let position = [0, 0];
96 position[0] = parseInt(coordinate_strings[0].slice(2));
97 position[1] = parseInt(coordinate_strings[1].slice(2));
103 draw_history: function() {
104 terminal.drawBox(1, terminal.cols / 2, terminal.rows - 2, terminal.cols / 2);
106 for (let line of chat.history) {
107 terminal.write(terminal.rows - 2 - i, terminal.cols / 2, line);
111 draw_map: function() {
114 for (let i = 0, j = 0; i < game.map.length; i++, j++) {
115 if (j == game.map_size[1]) {
116 map_lines.push(line);
122 map_lines.push(line);
123 for (let y = 0; y < game.map_size[0]; y++) {
124 terminal.write(y, 0, map_lines[y]);
126 for (const t in game.things) {
127 terminal.write(game.things[t][0], game.things[t][1], '@');
130 draw_turn_line: function(n) {
131 terminal.drawBox(0, terminal.cols / 2, 1, terminal.cols / 2);
132 terminal.write(0, terminal.cols / 2, 'turn: ' + game.turn);
134 draw_input_line: function() {
135 terminal.drawBox(terminal.rows - 1, terminal.cols / 2, 1, terminal.cols / 2);
136 terminal.write(terminal.rows - 1, terminal.cols / 2, chat.input_line);
138 log_msg: function(msg, indent=0) {
139 let line_length = (terminal.cols / 2) - indent;
141 for (let i = 0, x = 0; i < msg.length; i++, x++) {
142 if (x >= line_length) {
143 chat.history.unshift(' '.repeat(indent) + chunk);
149 chat.history.unshift(' '.repeat(indent) + chunk);
150 while (chat.history.length > terminal.rows - 2) {
155 refresh: function() {
172 terminal.initialize();
175 tui.draw_turn_line();
177 tui.draw_input_line();
180 tui.log_msg("basic commands:", 1);
181 tui.log_msg("LOGIN USER - register as USER", 3);
182 tui.log_msg("ALL TEXT - send TEXT to all users", 3);
183 tui.log_msg("QUERY USER TEXT - send TEXT to USER", 3);
185 tui.log_msg("Use arrow keys to move your avatar. You can only move over \".\" map cells.", 1);
187 tui.log_msg("Use double quotes for strings that contain whitespace, escape them with \\.", 1);
189 tui.log_msg("To change the map cell you are standing on, type the desired ASCII character into the prompt and hit Return.", 1);
191 tui.log_msg("more commands:", 1);
192 tui.log_msg("FLATTEN - transform surrounding map cells to \".\" ones", 3);
195 let websocket = new WebSocket(websocket_location);
196 websocket.onmessage = function (event) {
197 let tokens = parser.tokenize(event.data);
198 if (tokens[0] === 'TURN') {
200 game.turn = parseInt(tokens[1]);
201 } else if (tokens[0] === 'THING_POS') {
202 game.things[tokens[1]] = parser.parse_yx(tokens[2]);
203 } else if (tokens[0] === 'MAP') {
204 game.map_size = parser.parse_yx(tokens[1]);
206 } else if (tokens[0] === 'GAME_STATE_COMPLETE') {
207 tui.draw_turn_line();
210 } else if (tokens[0] === 'LOG') {
211 tui.log_msg(tokens[1], 1);
213 } else if (tokens[0] === 'META') {
214 tui.log_msg(tokens[1]);
216 } else if (tokens[0] === 'UNHANDLED_INPUT') {
217 tui.log_msg('unknown command');
219 } else if (tokens[0] === 'ARGUMENT_ERROR') {
220 tui.log_msg('syntax error: ' + tokens[1]);
222 } else if (tokens[0] === 'GAME_ERROR') {
223 tui.log_msg('game error: ' + tokens[1]);
225 } else if (tokens[0] === 'PONG') {
228 tui.log_msg('unhandled input: ' + event.data);
233 document.addEventListener('keydown', (event) => {
234 if (chat.input_line === '') {
235 tui.draw_input_line();
238 if (event.key && event.key.length === 1) {
239 chat.input_line += event.key;
240 tui.draw_input_line();
242 } else if (event.key === 'Backspace') {
243 chat.input_line = chat.input_line.slice(0, -1);
244 tui.draw_input_line();
246 } else if (event.key === 'Enter') {
247 if (chat.input_line.length === 1) {
248 websocket.send("TASK:WRITE " + chat.input_line);
249 } else if (chat.input_line.trimEnd() === 'FLATTEN') {
250 websocket.send("TASK:FLATTEN_SURROUNDINGS");
252 websocket.send(chat.input_line);
254 chat.input_line = '';
255 tui.draw_input_line();
256 } else if (event.key === 'ArrowLeft') {
257 websocket.send('TASK:MOVE LEFT');
258 } else if (event.key === 'ArrowRight') {
259 websocket.send('TASK:MOVE RIGHT');
260 } else if (event.key === 'ArrowUp') {
261 websocket.send('TASK:MOVE UP');
262 } else if (event.key === 'ArrowDown') {
263 websocket.send('TASK:MOVE DOWN');
267 window.setInterval(function() { websocket.send('PING') }, 30000);