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feat: calculate size based on screen size

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Thibaud Gasser
2026-02-18 10:35:58 +01:00
parent 4277a0ca48
commit ae7c3a4662
3 changed files with 53 additions and 48 deletions
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89
client.ts
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@@ -1,9 +1,8 @@
import type { Click, Update, Message, Hello, EndGame, Spectate } from "common.js";
const CELL_SIZE = 150;
const GRID_SIZE = CELL_SIZE * 3;
const SHAPE_SIZE = 100;
const ANIMATE_DURATION = 500; // ms
const GRID_PADDING = 10;
const MESSAGE_PADDING = 20;
let address = "ws://localhost:1234";
if (window.location.hostname !== "localhost") {
@@ -34,18 +33,18 @@ let mySymbol: "x" | "o" | null = null;
let animationId: number;
let canvasMsg: string = "Offline...";
function drawGridBackground(ctx: CanvasRenderingContext2D, origin: Point) {
function drawGridBackground(ctx: CanvasRenderingContext2D, origin: Point, cellSize: number, gridSize: number) {
ctx.strokeStyle = "white";
ctx.lineWidth = 5;
for (let x = 1; x < 3; ++x) {
ctx.moveTo(origin.x + x * CELL_SIZE, 0 + origin.y);
ctx.lineTo(origin.x + x * CELL_SIZE, origin.y + GRID_SIZE);
ctx.moveTo(origin.x + x * cellSize, origin.y);
ctx.lineTo(origin.x + x * cellSize, origin.y + gridSize);
}
for (let y = 1; y < 3; ++y) {
ctx.moveTo(origin.x, origin.y + y * CELL_SIZE);
ctx.lineTo(origin.x + GRID_SIZE, origin.y + y * CELL_SIZE);
ctx.moveTo(origin.x, origin.y + y * cellSize);
ctx.lineTo(origin.x + gridSize, origin.y + y * cellSize);
}
ctx.stroke();
@@ -54,22 +53,22 @@ function drawGridBackground(ctx: CanvasRenderingContext2D, origin: Point) {
function resizeCanvas(ctx: CanvasRenderingContext2D) {
ctx.canvas.width = window.innerWidth;
ctx.canvas.height = window.innerHeight;
ctx.clearRect(0, 0, ctx.canvas.width, ctx. canvas.height);
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
function coordToGridIndex(origin: Point, clientPos: Point): [number, number] | undefined {
function coordToGridIndex(origin: Point, clientPos: Point, cellSize: number): [number, number] | undefined {
// Coord relative to origin of the grid (origin)
const pt = { x: clientPos.x - origin.x, y: clientPos.y - origin.y };
const gridIndex: [number, number] = [Math.floor(pt.x / CELL_SIZE), Math.floor(pt.y / CELL_SIZE)];
const gridIndex: [number, number] = [Math.floor(pt.x / cellSize), Math.floor(pt.y / cellSize)];
if (gridIndex[0] >= 0 && gridIndex[0] <= 2 && gridIndex[1] >= 0 && gridIndex[1] <= 2) {
return gridIndex;
}
return undefined;
}
function handlePendingEvts(ws: WebSocket, gridOrigin: Point) {
function handlePendingEvts(ws: WebSocket, gridOrigin: Point, cellSize: number) {
for (const evt of pendingEvts) {
const gridIndex = coordToGridIndex(gridOrigin, evt);
const gridIndex = coordToGridIndex(gridOrigin, evt, cellSize);
if (gridIndex) {
const [x, y] = gridIndex;
const msg: Click = { x, y };
@@ -79,8 +78,8 @@ function handlePendingEvts(ws: WebSocket, gridOrigin: Point) {
pendingEvts = [];
}
function drawAnimatedCircle(ctx: CanvasRenderingContext2D, dt: number, x: number, y: number, hue: number) {
const radius = SHAPE_SIZE / 2;
function drawAnimatedCircle(ctx: CanvasRenderingContext2D, dt: number, x: number, y: number, hue: number, shapeSize: number) {
const radius = shapeSize / 2;
const end = dt*2*Math.PI/ANIMATE_DURATION;
ctx.save();
ctx.beginPath();
@@ -92,41 +91,42 @@ function drawAnimatedCircle(ctx: CanvasRenderingContext2D, dt: number, x: number
ctx.restore();
}
function drawAnimatedCross(ctx: CanvasRenderingContext2D, dt: number, x: number, y: number, hue: number) {
const startPoint: Point = { x: x-SHAPE_SIZE/2, y: y-SHAPE_SIZE/2 };
function drawAnimatedCross(ctx: CanvasRenderingContext2D, dt: number, x: number, y: number, hue: number, shapeSize: number) {
const startPoint: Point = { x: x-shapeSize/2, y: y-shapeSize/2 };
const halfAnim = ANIMATE_DURATION/2;
ctx.save();
ctx.beginPath();
ctx.moveTo(startPoint.x, startPoint.y);
const delta = SHAPE_SIZE*dt/halfAnim;
if (delta < SHAPE_SIZE) { // draw \
const d = Math.min(delta, SHAPE_SIZE);
const delta = shapeSize*dt/halfAnim;
if (delta < shapeSize) { // draw \
const d = Math.min(delta, shapeSize);
ctx.lineTo(startPoint.x + d, startPoint.y + d);
} else { // draw /
ctx.lineTo(startPoint.x + SHAPE_SIZE, startPoint.y + SHAPE_SIZE); // keep \ drawn
ctx.moveTo(startPoint.x + SHAPE_SIZE, startPoint.y);
const d = Math.min(delta - SHAPE_SIZE, SHAPE_SIZE);
ctx.lineTo(startPoint.x + SHAPE_SIZE - d, startPoint.y + d);
ctx.lineTo(startPoint.x + shapeSize, startPoint.y + shapeSize); // keep \ drawn
ctx.moveTo(startPoint.x + shapeSize, startPoint.y);
const d = Math.min(delta - shapeSize, shapeSize);
ctx.lineTo(startPoint.x + shapeSize - d, startPoint.y + d);
}
ctx.lineWidth = 5;
const percent = Math.floor(100*Math.min(delta, SHAPE_SIZE)/SHAPE_SIZE);
const percent = Math.floor(100*Math.min(delta, shapeSize)/shapeSize);
ctx.strokeStyle = `hsla(${hue}, ${percent}%, 50%, 1)`;
ctx.stroke();
ctx.restore();
}
function gridIndexToCoords(gridOrigin: Point, x: number, y: number): Point {
function gridIndexToCoords(gridOrigin: Point, x: number, y: number, cellSize: number): Point {
const center = {
x: gridOrigin.x + x * CELL_SIZE + CELL_SIZE/2,
y: gridOrigin.y + y * CELL_SIZE + CELL_SIZE/2
x: gridOrigin.x + x * cellSize + cellSize/2,
y: gridOrigin.y + y * cellSize + cellSize/2
};
return center;
}
function updateGridState(ctx: CanvasRenderingContext2D, time: number, gridOrigin: Point) {
function updateGridState(ctx: CanvasRenderingContext2D, time: number, gridOrigin: Point, cellSize: number) {
const shapeSize = cellSize * 0.80;
for (let y = 0; y < 3; ++y) {
for (let x = 0; x < 3; ++x) {
const shape = grid[y*3+x];
@@ -135,16 +135,16 @@ function updateGridState(ctx: CanvasRenderingContext2D, time: number, gridOrigin
shape.time = time;
}
const p = gridIndexToCoords(gridOrigin, x, y);
const p = gridIndexToCoords(gridOrigin, x, y, cellSize);
const dt = time - shape.time;
switch (shape.kind) {
case "o": {
drawAnimatedCircle(ctx, dt, p.x, p.y, shape.hue);
drawAnimatedCircle(ctx, dt, p.x, p.y, shape.hue, shapeSize);
break;
}
case "x": {
drawAnimatedCross(ctx, dt, p.x, p.y, shape.hue);
drawAnimatedCross(ctx, dt, p.x, p.y, shape.hue, shapeSize);
break;
}
default: break;
@@ -156,19 +156,22 @@ function updateGridState(ctx: CanvasRenderingContext2D, time: number, gridOrigin
// update loop, called every frame
function update(ctx: CanvasRenderingContext2D, time: number, ws: WebSocket) {
const cellSize = Math.floor(Math.min(ctx.canvas.width, ctx.canvas.height - MESSAGE_PADDING * 2 - GRID_PADDING) / 3);
const gridSize = cellSize * 3;
const gridOrigin: Point = {
x: ctx.canvas.width / 2 - GRID_SIZE / 2,
y: ctx.canvas.height / 2 - GRID_SIZE / 2
x: (ctx.canvas.width - gridSize) / 2,
y: MESSAGE_PADDING + GRID_PADDING,
};
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
ctx.fillStyle = "white";
ctx.font = "24px sans-serif";
ctx.fillText(canvasMsg, gridOrigin.x, gridOrigin.y - 50);
ctx.fillText(canvasMsg, gridOrigin.x + MESSAGE_PADDING, MESSAGE_PADDING);
drawGridBackground(ctx, gridOrigin);
handlePendingEvts(ws, gridOrigin);
updateGridState(ctx, time, gridOrigin);
drawGridBackground(ctx, gridOrigin, cellSize, gridSize);
updateGridState(ctx, time, gridOrigin, cellSize);
handlePendingEvts(ws, gridOrigin, cellSize);
animationId = window.requestAnimationFrame(t => update(ctx, t, ws));
}
@@ -183,7 +186,7 @@ function init() {
canvas.addEventListener("click", (evt) => {
if (isSpectator) {
console.debug("ignoring click in spectator mode");
console.warn("ignoring click in spectator mode");
return;
}
const {clientX, clientY} = evt;
@@ -208,7 +211,7 @@ function init() {
try {
msg = JSON.parse(evt.data);
} catch {
console.debug("received non-JSON message, ignoring");
console.warn("received non-JSON message, ignoring");
return;
}
console.log(msg);
@@ -261,9 +264,9 @@ function init() {
if (!isSpectator) {
canvasMsg = `Game reset... Id #${myId}, playing as ${mySymbol}`;
}
grid = new Array(9);
pendingEvts = [];
resizeCanvas(ctx);
grid = new Array(9); // reset grid state
pendingEvts = []; // reset pending events
resizeCanvas(ctx); // hack to avoid race condition on game reset
break;
}
default: {