--- /dev/null
+<!DOCTYPE html>
+<html><head>
+<style>
+</style>
+</head><body>
+<pre id="terminal" style="display: inline-block; color: white; background-color: black;"></pre>
+<script>
+"use strict";
+let websocket_location = "ws://localhost:8000";
+
+let terminal = {
+ rows: 24,
+ cols: 80,
+ initialize: function() {
+ this.pre_el = document.getElementById("terminal");
+ this.content = [];
+ let line = []
+ for (let y = 0, x = 0; y <= this.rows; x++) {
+ if (x == this.cols) {
+ x = 0;
+ y += 1;
+ this.content.push(line);
+ line = [];
+ if (y == this.rows) {
+ break;
+ }
+ }
+ line.push(' ');
+ }
+ console.log(this.content);
+ },
+ refresh: function() {
+ let pre_string = '';
+ for (let y = 0; y < this.rows; y++) {
+ let line = this.content[y].join('');
+ pre_string += line + '\n';
+ }
+ this.pre_el.textContent = pre_string;
+ },
+ write: function(start_y, start_x, msg) {
+ for (let x = start_x, i = 0; x < this.cols, i < msg.length; x++, i++) {
+ this.content[start_y][x] = msg[i];
+ }
+ },
+ drawBox: function(start_y, start_x, height, width) {
+ let end_y = start_y + height;
+ let end_x = start_x + width;
+ for (let y = start_y, x = start_x; y < end_y; x++) {
+ this.content[y][x] = ' ';
+ if (x == end_x) {
+ x = start_x - 1;
+ y += 1;
+ }
+ }
+ },
+}
+
+let parser = {
+ tokenize: function(str) {
+ let tokens = [];
+ let token = ''
+ let quoted = false;
+ let escaped = false;
+ for (let i = 0; i < str.length; i++) {
+ let c = str[i];
+ if (quoted) {
+ if (escaped) {
+ token += c;
+ escaped = false;
+ } else if (c == '\\') {
+ escaped = true;
+ } else if (c == '"') {
+ quoted = false
+ } else {
+ token += c;
+ }
+ } else if (c == '"') {
+ quoted = true
+ } else if (c === ' ') {
+ if (token.length > 0) {
+ tokens.push(token);
+ token = '';
+ }
+ } else {
+ token += c;
+ }
+ }
+ if (token.length > 0) {
+ tokens.push(token);
+ }
+ return tokens;
+ },
+ parse_yx(position_string) {
+ let coordinate_strings = position_string.split(',')
+ let position = [0, 0];
+ position[0] = parseInt(coordinate_strings[0].slice(2));
+ position[1] = parseInt(coordinate_strings[1].slice(2));
+ return position;
+ }
+}
+
+let tui = {
+ draw_history: function() {
+ terminal.drawBox(1, terminal.cols / 2, terminal.rows - 2, terminal.cols / 2);
+ let i = 0;
+ for (let line of chat.history) {
+ terminal.write(terminal.rows - 2 - i, terminal.cols / 2, line);
+ i += 1;
+ }
+ },
+ draw_map: function() {
+ let map_lines = [];
+ let line = '';
+ for (let i = 0, j = 0; i < game.map.length; i++, j++) {
+ if (j == game.map_size[1]) {
+ map_lines.push(line);
+ line = '';
+ j = 0;
+ };
+ line += game.map[i];
+ };
+ map_lines.push(line);
+ for (let y = 0; y < game.map_size[0]; y++) {
+ terminal.write(y, 0, map_lines[y]);
+ }
+ for (const t in game.things) {
+ terminal.write(game.things[t][0], game.things[t][1], '@');
+ }
+ },
+ draw_turn_line: function(n) {
+ terminal.drawBox(0, terminal.cols / 2, 1, terminal.cols / 2);
+ terminal.write(0, terminal.cols / 2, 'turn: ' + game.turn);
+ },
+ draw_input_line: function() {
+ terminal.drawBox(terminal.rows - 1, terminal.cols / 2, 1, terminal.cols / 2);
+ terminal.write(terminal.rows - 1, terminal.cols / 2, chat.input_line);
+ },
+ log_msg: function(msg, indent=0) {
+ let line_length = (terminal.cols / 2) - indent;
+ let chunk = "";
+ for (let i = 0, x = 0; i < msg.length; i++, x++) {
+ if (x >= line_length) {
+ chat.history.unshift(' '.repeat(indent) + chunk);
+ chunk = "";
+ x = 0;
+ };
+ chunk += msg[i];
+ }
+ chat.history.unshift(' '.repeat(indent) + chunk);
+ while (chat.history.length > terminal.rows - 2) {
+ chat.history.pop();
+ };
+ this.draw_history();
+ },
+ refresh: function() {
+ terminal.refresh();
+ }
+}
+
+let game = {
+ things: {},
+ turn: 0,
+ map: "",
+ map_size: [0,0]
+}
+
+let chat = {
+ input_line: "",
+ history: []
+}
+
+terminal.initialize();
+
+tui.draw_map();
+tui.draw_turn_line();
+tui.draw_history();
+tui.draw_input_line();
+tui.refresh();
+
+tui.log_msg("basic commands:", 1);
+tui.log_msg("LOGIN USER - register as USER", 3);
+tui.log_msg("ALL TEXT - send TEXT to all users", 3);
+tui.log_msg("QUERY USER TEXT - send TEXT to USER", 3);
+tui.log_msg("");
+tui.log_msg("Use arrow keys to move your avatar. You can only move over \".\" map cells.", 1);
+tui.log_msg("");
+tui.log_msg("Use double quotes for strings that contain whitespace, escape them with \\.", 1);
+tui.log_msg("");
+tui.log_msg("To change the map cell you are standing on, type the desired ASCII character into the prompt and hit Return.", 1);
+tui.log_msg("");
+tui.log_msg("more commands:", 1);
+tui.log_msg("FLATTEN - transform surrounding map cells to \".\" ones", 3);
+tui.log_msg("");
+
+let websocket = new WebSocket(websocket_location);
+websocket.onmessage = function (event) {
+ let tokens = parser.tokenize(event.data);
+ if (tokens[0] === 'TURN') {
+ game.things = {}
+ game.turn = parseInt(tokens[1]);
+ } else if (tokens[0] === 'THING_POS') {
+ game.things[tokens[1]] = parser.parse_yx(tokens[2]);
+ } else if (tokens[0] === 'MAP') {
+ game.map_size = parser.parse_yx(tokens[1]);
+ game.map = tokens[2]
+ } else if (tokens[0] === 'GAME_STATE_COMPLETE') {
+ tui.draw_turn_line();
+ tui.draw_map();
+ tui.refresh();
+ } else if (tokens[0] === 'LOG') {
+ tui.log_msg(tokens[1], 1);
+ tui.refresh();
+ } else if (tokens[0] === 'META') {
+ tui.log_msg(tokens[1]);
+ tui.refresh();
+ } else if (tokens[0] === 'UNHANDLED_INPUT') {
+ tui.log_msg('unknown command');
+ tui.refresh();
+ } else if (tokens[0] === 'ARGUMENT_ERROR') {
+ tui.log_msg('syntax error: ' + tokens[1]);
+ tui.refresh();
+ } else if (tokens[0] === 'GAME_ERROR') {
+ tui.log_msg('game error: ' + tokens[1]);
+ tui.refresh();
+ } else if (tokens[0] === 'PONG') {
+ console.log('PONG');
+ } else {
+ tui.log_msg('unhandled input: ' + event.data);
+ tui.refresh();
+ }
+}
+
+document.addEventListener('keydown', (event) => {
+ if (chat.input_line === '') {
+ tui.draw_input_line();
+ tui.refresh();
+ }
+ if (event.key && event.key.length === 1) {
+ chat.input_line += event.key;
+ tui.draw_input_line();
+ tui.refresh();
+ } else if (event.key === 'Backspace') {
+ chat.input_line = chat.input_line.slice(0, -1);
+ tui.draw_input_line();
+ tui.refresh();
+ } else if (event.key === 'Enter') {
+ if (chat.input_line.length === 1) {
+ websocket.send("TASK:WRITE " + chat.input_line);
+ } else if (chat.input_line.trimEnd() === 'FLATTEN') {
+ websocket.send("TASK:FLATTEN_SURROUNDINGS");
+ } else {
+ websocket.send(chat.input_line);
+ }
+ chat.input_line = '';
+ tui.draw_input_line();
+ } else if (event.key === 'ArrowLeft') {
+ websocket.send('TASK:MOVE LEFT');
+ } else if (event.key === 'ArrowRight') {
+ websocket.send('TASK:MOVE RIGHT');
+ } else if (event.key === 'ArrowUp') {
+ websocket.send('TASK:MOVE UP');
+ } else if (event.key === 'ArrowDown') {
+ websocket.send('TASK:MOVE DOWN');
+ };
+}, false);
+
+window.setInterval(function() { websocket.send('PING') }, 30000);
+</script>
+</body></html>
projects / plomrogue2-experiments / commitdiff