[pongwars] optimisation

docs/pongwars/index.html

@@ -47,15 +47,25 @@
 			#made {
 				font-family: monospace;
 				margin-top: auto;
-				margin-bottom: 20px;
 				font-size: 12px;
 				padding-left: 20px;
 			}
 
+			#mode {
+				font-family: monospace;
+				font-size: 12px;
+				list-style-type: none;
+				margin-bottom: 20px;
+			}
+
 			#instr {
 				font-family: monospace;
 				font-size: 12px;
-				padding-left: 20px;
+			}
+
+			#threshold {
+				font-family: monospace;
+				font-size: 8px;
 			}
 
 			#made a {
@@ -69,7 +79,7 @@
 			<canvas id="pongCanvas" width="1200" height="800"></canvas>
 			<div id="score"></div>
 			<p id="instr">
-			balls can be controlled with number keys
+			balls can be controlled with keys shown to the left of their names
 			</p>
 			<p id="made">
 				made by <a href="https://koenvangilst.nl">Koen van Gilst</a> | source on
@@ -78,6 +88,13 @@
 				patches from dogeystamp | patched source on
 				<a href="https://github.com/dogeystamp/garbage-monorepo/tree/main/pongwars">github</a>
 			</p>
+			<p id="threshold"></p>
+			<div id="mode">
+				change mode:
+				<a class="modeLink" data-mode="normal">normal</a>
+				<a class="modeLink" data-mode="big">big</a>
+				<a class="modeLink" data-mode="small">small</a>
+			</div>
 		</div>
 	</body>
 
@@ -91,6 +108,7 @@
 	const canvas = document.getElementById("pongCanvas");
 	const ctx = canvas.getContext("2d");
 	const scoreElement = document.getElementById("score");
+	const thresholdElement = document.getElementById("threshold");
 
 	var suddenDeathStart = null;
 	var suddenDeathCoeff = 0;
@@ -114,7 +132,7 @@
 		{
 			name: "orange",
 			color: "coral",
-			backgroundColor: "chocolate",
+			backgroundColor: "#DD4500",
 		},
 		{
 			name: "white",
@@ -136,33 +154,91 @@
 			color: "gray",
 			backgroundColor: "#333333",
 		},
+		{
+			name: "yellow",
+			color: "yellow",
+			backgroundColor: "goldenrod",
+		},
+		{
+			name: "pink",
+			color: "darksalmon",
+			backgroundColor: "mediumvioletred",
+		},
+		{
+			name: "turquoise",
+			color: "turquoise",
+			backgroundColor: "royalblue",
+		},
+		{
+			name: "salmon",
+			color: "peachpuff",
+			backgroundColor: "salmon",
+		},
 	];
 
 	var state = {}
 
-	const squareSize = 16;
+
-	const numSquaresX = canvas.width / squareSize;
+	var squareSize = 16;
-	const numSquaresY = canvas.height / squareSize;
+	var numSquaresX = canvas.width / squareSize;
+	var numSquaresY = canvas.height / squareSize;
 	let squares = [];
 
 	// matrix of "timestamps" where each square was claimed
 	let squareTaken = [];
 	var squareTime = 0;
 
+	// threshold for territory under which a color starts dying
+	let threshold = 0;
+
+	var nTeams = teams.length;
+	// NTeams but with ease in to avoid instant deaths
+	var smoothNTeams = nTeams;
+
+	// do not edit without editing the code below for key to idx
+	const idxKeyMap = [..."0123456789abcdefghijklmnopqrstuvwxyz"];
+	function keyToIdx(key) {
+		const keyInt = parseInt(key, 36);
+		if (!isNaN(keyInt) && keyInt < teams.length) return keyInt;
+		return null
+	}
+
 	document.addEventListener("keydown", (event) => {
-		const key = parseInt(event.key)
+		const idx = keyToIdx(event.key)
-		if (isNaN(key)) return
+		if (idx === null) return
-		state[key].boostEnabled = true;
+		state[idx].boostEnabled = true;
 	})
 	document.addEventListener("keyup", (event) => {
-		const key = parseInt(event.key)
+		const idx = keyToIdx(event.key)
-		if (isNaN(key)) return
+		if (idx === null) return
-		state[key].boostEnabled = false;
+		state[idx].boostEnabled = false;
 	})
 
-	function initialState() {
+	const params = new URLSearchParams(window.location.search);
-		state = teams.map((team) => ({
+
-			elim: false,
+	const modeLinks = document.getElementsByClassName("modeLink");
+	for (let i = 0; i < modeLinks.length; i++) {
+		let loc = new URL(window.location);
+		loc.searchParams.set("size", modeLinks[i].getAttribute("data-mode"));
+		modeLinks[i].href = loc.href;
+	}
+
+	function initialState({gridW = 4, gridH = 2, cols = teams.length, canvasW=1200, canvasH=800, squareSize=16} = {}) {
+		ctx.clearRect(0, 0, canvas.width, canvas.height);
+
+		nTeams = cols;
+		smoothNTeams = cols;
+
+		canvas.width = canvasW;
+		canvas.height = canvasH;
+		window.squareSize = squareSize;
+
+		numSquaresX = canvas.width / squareSize;
+		numSquaresY = canvas.height / squareSize;
+
+		state = {};
+		state = teams.map((team, idx) => ({
+			elim: idx >= cols,
 			boostEnabled: false,
 			x: 0,
 			y: 0,
@@ -171,7 +247,7 @@
 			score: 0,
 			// how many consecutive contested tiles it has hit
 			conflict: 0,
-		}))
+		}));
 
 		// base noise pattern (failsafe in case the grid doesn't cover some part)
 		for (let i = 0; i < numSquaresX; i++) {
@@ -186,15 +262,13 @@
 
 		const enableGrid = true;
 		if (enableGrid) {
-			const gridW = 4;
-			const gridH = 2;
 			for (let i = 0; i < gridW; i++) {
 				for (let j = 0; j < gridH; j++) {
 					const gridIdx = j * gridW + i;
 					const t = (gridIdx < teams.length) ? gridIdx : null;
 
-					for (let x = Math.floor(i/gridW*numSquaresX); x < Math.floor((i+1)/gridW*numSquaresX); x++) {
+					for (let x = Math.floor(i/gridW*numSquaresX); x < Math.ceil((i+1)/gridW*numSquaresX); x++) {
-						for (let y = Math.floor(j/gridH*numSquaresY); y < Math.floor((j+1)/gridH*numSquaresY); y++) {
+						for (let y = Math.floor(j/gridH*numSquaresY); y < Math.ceil((j+1)/gridH*numSquaresY); y++) {
 							if (t !== null) {
 								squares[x][y] = t;
 							}
@@ -214,8 +288,33 @@
 				state[i].dy = 8 * Math.sin(angle);
 			}
 		}
+
+		state.forEach((t) => (t.score = 0));
+		for (let i = 0; i < numSquaresX; i++) {
+			for (let j = 0; j < numSquaresY; j++) {
+				state[squares[i][j]].score++;
+			}
+		}
+
+		for (let i = 0; i < numSquaresX; i++) {
+			for (let j = 0; j < numSquaresY; j++) {
+				drawSquare(i, j);
+			}
+		}
+	}
+
+	switch (params.get("size")) {
+		case "big":
+			initialState({gridW: 4, gridH: 3, cols: 12, canvasW: 1600, canvasH: 1000});
+			break;
+		case "small":
+			initialState({gridW: 2, gridH: 1, cols: 2, canvasW: 600, canvasH: 600, squareSize: 25});
+			break;
+		case "normal":
+		default:
+			initialState({gridW: 4, gridH: 2, cols: 8});
+			break;
 	}
-	initialState();
 
 	function randomNum(min, max) {
 		return Math.random() * (max - min) + min;
@@ -231,6 +330,19 @@
 
 	updateScoreElement();
 
+	function coverBall(x, y) {
+		// draw over the last ball
+		let i = Math.floor(x / squareSize);
+		let j = Math.floor(y / squareSize);
+		for (let checkI = i-1; checkI <= i+1; checkI++) {
+			for (let checkJ = j-1; checkJ <= j+1; checkJ++) {
+				if (checkI >= 0 && checkI < numSquaresX && checkJ >= 0 && checkJ < numSquaresY) {
+					drawSquare(checkI, checkJ);
+				}
+			}
+		}
+	}
+
 	function drawBall(x, y, color) {
 		ctx.beginPath();
 		ctx.arc(x, y, squareSize / 2, 0, Math.PI * 2, false);
@@ -239,13 +351,17 @@
 		ctx.closePath();
 	}
 
-	function drawSquares() {
+	function drawSquare(i, j) {
-		for (let i = 0; i < numSquaresX; i++) {
-			for (let j = 0; j < numSquaresY; j++) {
 		ctx.fillStyle = teams[squares[i][j]].backgroundColor;
 		ctx.fillRect(i * squareSize, j * squareSize, squareSize, squareSize);
 	}
-		}
+
+	function takeSquare(i, j, team) {
+		state[team].score++;
+		state[squares[i][j]].score--;
+		squares[i][j] = team;
+		squareTaken[i][j] = squareTime;
+		drawSquare(i, j);
 	}
 
 	function clamp(min, max, num) {
@@ -256,14 +372,10 @@
 		return v*x + (1-v)*y;
 	}
 
-	var nTeams = teams.length;
-
 	function updateSquareAndBounce(x, y, dx, dy, color) {
 		if (state[color].elim) return
 		if (Math.max(Math.abs(dx), Math.abs(dy)) < 0.02) state[color].elim = true
 
-		nTeams = state.map(t => !t.elim).filter(Boolean).length
-
 		if (Math.min(x, y) < 0 || isNaN(x) || isNaN(y)) {
 			console.warn(`warped ${teams[color].name}`)
 			state[color].x = canvas.width * 0.1;
@@ -281,7 +393,10 @@
 		}
 
 		// death coefficient (if not enough territory, slow down)
-		const coeff = Math.min((state[color].score/(numSquaresX*numSquaresY/nTeams/mix(1.2, 4, suddenDeathCoeff))), 1.00);
+		var coeff = Math.min((state[color].score/threshold), 1.00);
+
+		// winners don't slow down
+		if (nTeams === 1) coeff = 1;
 
 		// death coefficient when no collision
 		const vacuumCoeff = coeff**(0.01);
@@ -329,13 +444,12 @@
 						console.log(`${teams[color].name} claims the remaining territory of ${teams[foreign].name}`)
 						for (let ai = 0; ai < numSquaresX; ai++) {
 							for (let aj = 0; aj < numSquaresY; aj++) {
-								if (squares[ai][aj] == foreign) squares[ai][aj] = color;
+								if (squares[ai][aj] == foreign) takeSquare(ai, aj, color);
 							}
 						}
 					}
 
-					squareTaken[i][j] = squareTime;
+					takeSquare(i, j, color);
-					squares[i][j] = color;
 
 					// Determine bounce direction based on the angle
 					if (Math.abs(Math.cos(angle)) > Math.abs(Math.sin(angle))) {
@@ -375,21 +489,10 @@
 		if (!squares) {
 			return;
 		}
-		state.forEach((t) => (t.score = 0));
-		for (let i = 0; i < numSquaresX; i++) {
-			for (let j = 0; j < numSquaresY; j++) {
-				state[squares[i][j]].score++;
-			}
-		}
-		for (let i = 0; i < teams.length; i++) {
-			if (state[i].score <= 4) {
-				state[i].elim = true
-			}
-		}
 
 		if (nTeams > 1) {
 			scoreElement.textContent = teams
-				.map((t, idx) => `(${idx}) ${t.name} ${state[idx].score}`)
+				.map((t, idx) => `(${idxKeyMap[idx]}) ${t.name} ${state[idx].score}`)
 				.filter((t, idx) => !state[idx].elim)
 			.join(" | ") + (suddenDeathCoeff > 0.1 ? " | sudden death!" : "");
 		} else {
@@ -397,11 +500,26 @@
 				.filter((t, idx) => !state[idx].elim)
 				.map((t) => `${t.name} 👑 wins`)
 		}
+
+		thresholdElement.textContent = `threshold: ${Math.round(threshold)}`;
 	}
 
 	function draw() {
-		ctx.clearRect(0, 0, canvas.width, canvas.height);
+		for (let i = 0; i < teams.length; i++) {
-		drawSquares();
+			if (state[i].score <= 4) {
+				state[i].elim = true
+			}
+		}
+
+		nTeams = state.map(t => !t.elim).filter(Boolean).length;
+		
+		// practically inertia (0-1)
+		const smoothCoeff = 0.999;
+
+		smoothNTeams = smoothNTeams * (smoothCoeff) + nTeams * (1 - smoothCoeff);
+		if (isNaN(smoothNTeams)) smoothNTeams = nTeams;
+
+		threshold = numSquaresX*numSquaresY/smoothNTeams/mix(1.2, 4, suddenDeathCoeff);
 
 		squareTime++;
 		squareTime %= 100000;
@@ -409,7 +527,6 @@
 		for (let i = 0; i < teams.length; i++) {
 			if (state[i].elim) continue
 			const t = state[i];
-			drawBall(t.x, t.y, teams[i].color);
 			let bounce = updateSquareAndBounce(t.x, t.y, t.dx, t.dy, i);
 			t.dx = bounce.dx;
 			t.dy = bounce.dy;
@@ -427,8 +544,10 @@
 				t.dy = -t.dy;
 			}
 
+			coverBall(t.x, t.y);
 			t.x += t.dx;
 			t.y += t.dy;
+			drawBall(t.x, t.y, teams[i].color);
 		}
 
 		updateScoreElement();