(hopefully) improved reconciliation
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parent
c35c18bbbc
commit
5c936df3f6
GPG key ID:
CF99829C92678188
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@ -109,23 +109,32 @@ function start() {
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break;
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case "update": {
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server_tick = data.tick;
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Object.keys(data.players).forEach(id => {
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const player = players[id];
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const update = data.players[id];
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// this should never be true, but just in case
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if (!player) return;
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if (id == client_id) {
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// clear all predictions prior to this tick
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var prediction = predictions[data.tick];
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if (prediction) {
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Object.keys(predictions).forEach(tick => {
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if (tick < data.tick) delete predictions[tick];
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});
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var prediction = predictions[data.tick];
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if (!prediction) return;
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server_ping = new Date() - prediction.time;
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if (Math.abs(prediction.x - update.x) > 1)
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players[client_id].x = update.x;
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if (Math.abs(prediction.y - update.y) > 1)
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players[client_id].y = update.y;
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}
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Object.keys(data.players).forEach(id => {
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const player = players[id];
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const update = data.players[id];
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if (id == client_id) {
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if (!prediction) return;
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const predicted = prediction.player;
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// clear all predictions prior to this tick
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if (predicted != update) {
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var diff_x = predicted.x - update.x;
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var diff_y = predicted.y - update.y;
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// apply difference to all predictions
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Object.values(predictions).forEach(p => {
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p.x -= diff_x;
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p.y -= diff_y;
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});
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// update client state to reflect
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player.x -= diff_x;
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player.y -= diff_y;
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}
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delete predictions[data.tick];
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} else {
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player.x = update.x;
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@ -135,9 +144,33 @@ function start() {
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Object.keys(data.props).forEach(id => {
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const prop = props[id];
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const update = data.props[id];
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if (!prediction) {
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prop.x = update.x;
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prop.y = update.y;
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prop.xv = update.xv;
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prop.yv = update.yv;
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return;
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}
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const predicted = prediction.props[id];
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if (predicted != update) {
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var diff_x = predicted.x - update.x;
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var diff_y = predicted.y - update.y;
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var diff_xv = predicted.xv - update.xv;
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var diff_yv = predicted.yv - update.yv;
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// apply difference to all predictions
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Object.values(predictions).forEach(p => {
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p.x -= diff_x;
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p.y -= diff_y;
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p.xv -= diff_xv;
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p.yv -= diff_yv;
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});
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// update client state to reflect
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prop.x -= diff_x;
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prop.y -= diff_y;
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prop.xv -= diff_xv;
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prop.yv -= diff_yv;
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}
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});
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break;
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}
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@ -211,6 +244,10 @@ function start() {
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canvas.addEventListener("keypress", event => {
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switch (event.key.toLowerCase()) {
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case 'i':
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enable_interpolation.update(val => !val);
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interpolationToggle.checked = enable_interpolation.get();
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break;
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case 'p':
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console.log(predictions);
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break;
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@ -288,16 +325,22 @@ function sendChat(msg) {
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}
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function update(delta) {
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const prediction = {
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time: new Date(),
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player: {},
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props: {},
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};
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const clientPlayer = players[client_id];
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if (clientPlayer) {
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if (!clientPlayer) return;
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clientPlayer.in_x = input.move_right - input.move_left;
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clientPlayer.in_y = input.move_down - input.move_up;
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clientPlayer.update(delta);
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// insert prediction for the next server tick
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predictions[ticks] = {
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time: new Date(),
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prediction.player = {
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x: clientPlayer.x,
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y: clientPlayer.y,
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};
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@ -312,7 +355,19 @@ function update(delta) {
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y: input.move_down - input.move_up,
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}));
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}, fake_ping.get() / 2);
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}
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Object.keys(props).forEach(id => {
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const prop = props[id];
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prop.update(delta, Object.values(players));
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prediction.props[id] = {
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x: prop.x,
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y: prop.y,
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xv: prop.xv,
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yv: prop.yv,
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};
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});
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predictions[ticks] = prediction;
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ticks++;
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}
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@ -337,8 +392,8 @@ function draw() {
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const server_state = Object.values(predictions)[0];
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ctx.fillStyle = "#208020";
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ctx.beginPath();
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ctx.rect(server_state.x - Player.SIZE / 2,
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server_state.y - Player.SIZE / 2,
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ctx.rect(server_state.player.x - Player.SIZE / 2,
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server_state.player.y - Player.SIZE / 2,
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Player.SIZE, Player.SIZE);
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ctx.stroke();
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}
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@ -88,6 +88,8 @@ export function init(http_server) {
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name: prop.name,
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x: prop.x,
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y: prop.y,
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xv: prop.xv,
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yv: prop.yv,
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col: prop.colour,
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sprite: prop.sprite,
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}
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@ -193,6 +195,8 @@ function update() {
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frame_props[id] = {
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x: prop.x,
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y: prop.y,
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xv: prop.xv,
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yv: prop.yv,
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}
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});
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