--- /dev/null
+<!DOCTYPE HTML>
+<html>
+<style>
+canvas { border: 1px solid black; }
+</style>
+<body>
+<canvas id="terminal" />
+<script>
+"use strict";
+let websocket_location = "ws://localhost:8000"
+
+let terminal = {
+ rows: 24,
+ cols: 80,
+ charHeight: 24,
+ initialize: function() {
+ this.ctx = document.getElementById("terminal").getContext("2d"),
+ this.set_font();
+ this.charWidth = this.ctx.measureText("M").width;
+ this.ctx.canvas.height = this.charHeight * this.rows;
+ this.ctx.canvas.width = this.charWidth * this.cols;
+ this.set_font(); // ctx.font gets reset to default on canvas size change, so we have to re-set our own
+ this.ctx.textBaseline = "top";
+ },
+ set_font: function(type='normal') {
+ this.ctx.font = type + ' ' + this.charHeight + 'px monospace';
+ },
+ write: function(start_y, start_x, msg, foreground_color='black') {
+ this.ctx.fillStyle = foreground_color;
+ this.ctx.fillRect(start_x*this.charWidth, start_y*this.charHeight,
+ this.charWidth*msg.length, this.charHeight);
+ if (foreground_color === 'black') {
+ this.ctx.fillStyle = 'white';
+ } else {
+ this.ctx.fillStyle = 'black';
+ }
+ this.ctx.fillText(msg, start_x*this.charWidth, start_y*this.charHeight);
+ },
+ drawBox: function (start_y, start_x, height, width, color='white') {
+ this.ctx.fillStyle = color;
+ this.ctx.fillRect(start_x*this.charWidth, start_y*this.charHeight,
+ this.charWidth*width, this.charHeight*height);
+ }
+}
+
+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_position(position_string) {
+ let coordinate_strings = position_string.split(',')
+ let position = [0, 0];
+ position[0] = coordinate_strings[0].slice(2);
+ position[1] = coordinate_strings[1].slice(2);
+ return position;
+ }
+}
+
+let tui = {
+ log_msg: function(msg) {
+ chat.history.unshift(msg);
+ if (chat.history.length > terminal.rows - 2) {
+ chat.history.pop();
+ }
+ terminal.drawBox(1, terminal.cols / 2, terminal.rows - 2, terminal.cols);
+ let i = 0;
+ for (let line of chat.history) {
+ terminal.write(terminal.rows - 2 - i, terminal.cols / 2, line);
+ i += 1;
+ // if (i > terminal.rows - 3) {
+ // break;
+ // }
+ }
+ },
+ draw_map: function() {
+ terminal.drawBox(0, 0, terminal.rows, terminal.cols / 2);
+ for (const t in game.things) {
+ terminal.write(game.things[t][0], game.things[t][1], '@');
+ }
+ },
+ draw_tick_line: function(n) {
+ terminal.drawBox(0, 0, terminal.rows, terminal.cols / 2);
+ terminal.write(0, terminal.cols / 2, 'tick: ' + game.tick);
+ },
+ draw_input_line: function() {
+ terminal.drawBox(terminal.rows - 1, terminal.cols / 2, 1, terminal.cols / 2, 'black');
+ terminal.write(terminal.rows - 1, terminal.cols / 2, chat.input_line);
+ }
+}
+
+let game = {
+ things: {},
+ tick: 0
+}
+
+let chat = {
+ input_line: "",
+ history: []
+}
+
+terminal.initialize()
+terminal.drawBox(terminal.rows - 1, terminal.cols / 2, 1, terminal.cols, 'black');
+
+document.addEventListener('keydown', (event) => {
+ if (chat.input_line === '') {
+ terminal.drawBox(terminal.rows - 1, terminal.cols / 2, 1, terminal.rows, 'black');
+ }
+ if (event.key && event.key.length === 1) {
+ chat.input_line += event.key;
+ tui.draw_input_line();
+ } else if (event.key === 'Backspace') {
+ chat.input_line = chat.input_line.slice(0, -1);
+ tui.draw_input_line();
+ } else if (event.key === 'Enter') {
+ 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');
+ };
+ console.log(event.key);
+}, false);
+
+let websocket = new WebSocket(websocket_location);
+websocket.onmessage = function (event) {
+ let tokens = parser.tokenize(event.data);
+ if (tokens[0] === 'TURN') {
+ game.things = {}
+ game.tick = parseInt(tokens[1]);
+ tui.draw_tick_line();
+ } else if (tokens[0] === 'THING_POS') {
+ game.things[tokens[1]] = parser.parse_position(tokens[2]);
+ tui.draw_map();
+ } else if (tokens[0] === 'LOG') {
+ tui.log_msg(' ' + tokens[1]);
+ } else if (tokens[0] === 'ARGUMENT_ERROR') {
+ tui.log_msg('syntax error: ' + tokens[1]);
+ } else if (tokens[0] === 'GAME_ERROR') {
+ tui.log_msg('game error: ' + tokens[1]);
+ } else {
+ tui.log_msg('unhandled input: ' + event.data);
+ }
+}
+</script>
+</body>
+</html>
projects / plomrogue2-experiments / blobdiff