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);
33 for (let y = 0; y < this.rows; y++) {
34 let line = this.content[y].join('');
35 pre_string += line + '\n';
37 this.pre_el.textContent = pre_string;
39 write: function(start_y, start_x, msg) {
40 for (let x = start_x, i = 0; x < this.cols && i < msg.length; x++, i++) {
41 this.content[start_y][x] = msg[i];
44 drawBox: function(start_y, start_x, height, width) {
45 let end_y = start_y + height;
46 let end_x = start_x + width;
47 for (let y = start_y, x = start_x;; x++) {
55 this.content[y][x] = ' ';
61 tokenize: function(str) {
66 for (let i = 0; i < str.length; i++) {
72 } else if (c == '\\') {
74 } else if (c == '"') {
79 } else if (c == '"') {
81 } else if (c === ' ') {
82 if (token.length > 0) {
90 if (token.length > 0) {
95 parse_yx(position_string) {
96 let coordinate_strings = position_string.split(',')
97 let position = [0, 0];
98 position[0] = parseInt(coordinate_strings[0].slice(2));
99 position[1] = parseInt(coordinate_strings[1].slice(2));
104 function quote(str) {
106 for (let i = 0; i < str.length; i++) {
108 if (c in ['"', '\\']) {
114 return quoted.join('');
118 draw_history: function() {
119 terminal.drawBox(1, terminal.cols / 2, terminal.rows - 2, terminal.cols / 2);
121 for (let line of chat.history) {
122 terminal.write(terminal.rows - 2 - i, terminal.cols / 2, line);
126 draw_map: function() {
127 terminal.drawBox(0, 0, terminal.rows, terminal.cols / 2);
130 for (let i = 0, j = 0; i < game.map.length; i++, j++) {
131 if (j == game.map_size[1]) {
132 map_lines.push(line);
136 line.push(game.map[i]);
138 map_lines.push(line);
139 let player_position = [0,0];
140 for (const thing_id in game.things) {
141 let t = game.things[thing_id];
142 map_lines[t[0]][t[1]] = '@';
143 if (game.player_id == thing_id) {
147 let offset = [(terminal.rows / 2) - player_position[0],
148 terminal.cols / 4 - player_position[1]];
149 for (let term_y = offset[0], map_y = 0;
150 term_y < terminal.rows && map_y < game.map_size[0];
153 let to_draw = map_lines[map_y].join('').slice(0, terminal.cols / 2 - offset[1]);
154 terminal.write(term_y, offset[1], to_draw);
158 draw_turn_line: function(n) {
159 terminal.drawBox(0, terminal.cols / 2, 1, terminal.cols / 2);
160 terminal.write(0, terminal.cols / 2, 'turn: ' + game.turn);
162 draw_input_line: function() {
163 terminal.drawBox(terminal.rows - 1, terminal.cols / 2, 1, terminal.cols / 2);
164 terminal.write(terminal.rows - 1, terminal.cols / 2, chat.input_line);
166 log_msg: function(msg, indent=0) {
167 let line_length = (terminal.cols / 2) - indent;
169 for (let i = 0, x = 0; i < msg.length; i++, x++) {
170 if (x >= line_length) {
171 chat.history.unshift(' '.repeat(indent) + chunk);
177 chat.history.unshift(' '.repeat(indent) + chunk);
178 while (chat.history.length > terminal.rows - 2) {
183 refresh: function() {
186 log_help: function() {
188 tui.log_msg("HELP", 1);
189 tui.log_msg("chat mode commands:", 1);
191 tui.log_msg("/login USER - register as USER", 3);
192 tui.log_msg("/msg USER TEXT - send TEXT to USER", 3);
193 tui.log_msg("/game - switch to game mode", 3);
195 tui.log_msg("map mode commands:", 1);
196 tui.log_msg("w, a, s, d - move avatar", 3);
197 tui.log_msg("f - flatten surroundings", 3);
198 tui.log_msg("e - write following ASCII character", 3);
199 tui.log_msg("c - switch to chat mode", 3);
217 terminal.initialize();
220 tui.draw_turn_line();
222 tui.draw_input_line();
225 let websocket = new WebSocket(websocket_location);
226 websocket.onmessage = function (event) {
227 let tokens = parser.tokenize(event.data);
228 if (tokens[0] === 'TURN') {
230 game.turn = parseInt(tokens[1]);
231 } else if (tokens[0] === 'THING_POS') {
232 game.things[tokens[1]] = parser.parse_yx(tokens[2]);
233 } else if (tokens[0] === 'MAP') {
234 game.map_size = parser.parse_yx(tokens[1]);
236 } else if (tokens[0] === 'GAME_STATE_COMPLETE') {
237 tui.draw_turn_line();
240 } else if (tokens[0] === 'LOG') {
241 tui.log_msg(tokens[1], 1);
243 } else if (tokens[0] === 'PLAYER_ID') {
244 game.player_id = parseInt(tokens[1]);
245 } else if (tokens[0] === 'META') {
246 tui.log_msg(tokens[1]);
248 } else if (tokens[0] === 'UNHANDLED_INPUT') {
249 tui.log_msg('unknown command');
251 } else if (tokens[0] === 'ARGUMENT_ERROR') {
252 tui.log_msg('syntax error: ' + tokens[1]);
254 } else if (tokens[0] === 'GAME_ERROR') {
255 tui.log_msg('game error: ' + tokens[1]);
257 } else if (tokens[0] === 'PONG') {
260 tui.log_msg('unhandled input: ' + event.data);
266 document.addEventListener('keydown', (event) => {
267 if (mode == 'chat') {
268 if (event.key.length === 1) {
269 chat.input_line += event.key;
270 tui.draw_input_line();
272 } else if (event.key == 'Backspace') {
273 chat.input_line = chat.input_line.slice(0, -1);
274 tui.draw_input_line();
276 } else if (event.key == 'Enter') {
277 let tokens = parser.tokenize(chat.input_line);
279 if (tokens.length > 0 && tokens[0].length > 0) {
280 if (tokens[0][0] == '/') {
281 if (tokens[0] == '/game') {
283 } else if (tokens[0] == '/?') {
286 } else if (tokens[0] == '/login') {
287 if (tokens.length > 1) {
288 websocket.send('LOGIN ' + quote(tokens[1]));
290 tui.log_msg('need login name');
292 } else if (tokens[0] == '/msg') {
293 if (tokens.length > 2) {
294 websocket.send('QUERY ' + quote(tokens[1]) + ' ' + quote(tokens[2]));
296 tui.log_msg('need message target and message');
299 tui.log_msg('unknown command');
302 websocket.send('ALL ' + quote(chat.input_line));
305 chat.input_line = '';
306 tui.draw_input_line();
309 } else if (mode == 'game') {
310 if (event.key === 'c') {
312 } else if (event.key === 'e') {
314 } else if (event.key === '?') {
317 } else if (event.key === 'f') {
318 websocket.send("TASK:FLATTEN_SURROUNDINGS");
319 } else if (event.key === 'a') {
320 websocket.send('TASK:MOVE LEFT');
321 } else if (event.key === 'd') {
322 websocket.send('TASK:MOVE RIGHT');
323 } else if (event.key === 'w') {
324 websocket.send('TASK:MOVE UP');
325 } else if (event.key === 's') {
326 websocket.send('TASK:MOVE DOWN');
328 } else if (mode == 'edit') {
329 if (event.key.length === 1) {
330 websocket.send("TASK:WRITE " + quote(event.key));
336 window.setInterval(function() { websocket.send('PING') }, 30000);