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add a graph with scores over time #31

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add a graph with scores over time #31

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989577d
add a graph with scores over time
tyomitch Feb 6, 2024
433957c
Separate canvas for the graph
tyomitch Feb 6, 2024
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27 changes: 26 additions & 1 deletion index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,7 @@
height: 100%;
}

#pongCanvas {
canvas {
display: block;
border-radius: 4px;
overflow: hidden;
Expand Down Expand Up @@ -71,6 +71,7 @@
<div id="container">
<canvas id="pongCanvas" width="800" height="800"></canvas>
<div id="score"></div>
<canvas id="graph" width="1200" height="150"></canvas>
<p id="made">
made by <a href="https://koenvangilst.nl">Koen van Gilst</a> | source on
<a href="https://github.com/vnglst/pong-wars">github</a>
Expand All @@ -92,7 +93,9 @@
// Idea for Pong wars: https://twitter.com/nicolasdnl/status/1749715070928433161

const canvas = document.getElementById("pongCanvas");
const graph = document.getElementById("graph");
const ctx = canvas.getContext("2d");
const ctxGraph = graph.getContext("2d", { willReadFrequently: true });
const scoreElement = document.getElementById("score");

const DAY_COLOR = colorPalette.MysticMint;
Expand Down Expand Up @@ -192,6 +195,28 @@
}

scoreElement.textContent = `day ${dayScore} | night ${nightScore}`;
if (iteration % 10 !== 0) {
return;
}

const dayPart = graph.height * dayScore / (numSquaresX * numSquaresY);

const imageData = ctxGraph.getImageData(1, 0, graph.width, graph.height);
ctxGraph.putImageData(imageData, 0, 0);

ctxGraph.strokeStyle = DAY_COLOR;
ctxGraph.beginPath();
ctxGraph.moveTo(graph.width, 0);
ctxGraph.lineTo(graph.width, dayPart);
ctxGraph.lineWidth = 2;
ctxGraph.stroke();

ctxGraph.strokeStyle = NIGHT_COLOR;
ctxGraph.beginPath();
ctxGraph.moveTo(graph.width, dayPart);
ctxGraph.lineTo(graph.width, graph.height);
ctxGraph.lineWidth = 2;
ctxGraph.stroke();
}

function checkBoundaryCollision(x, y, dx, dy) {
Expand Down