Bouncing Amogus

src/components/Amogus/Amogus.tsx

@@ -0,0 +1,91 @@
+import { useEffect, useState } from "react";
+import amogus from "/img/amogus.png";
+import imposter from "/img/imposter.png";
+import style from "./style.module.css";
+
+type Amogus = {
+    isImposter: boolean;
+    posX: number;
+    posY: number;
+    speedX: number;
+    speedY: number;
+};
+
+const getImage = (sus: Amogus) => (sus.isImposter ? imposter : amogus);
+
+const initialCrewmates: Amogus[] = [
+    { key: "a", isImposter: true, posX: 10, posY: 20, speedX: 10, speedY: 30 },
+    {
+        key: "b",
+        isImposter: false,
+        posX: 400,
+        posY: 200,
+        speedX: 10,
+        speedY: -20,
+    },
+    {
+        key: "c",
+        isImposter: false,
+        posX: 900,
+        posY: 200,
+        speedX: -20,
+        speedY: 10,
+    },
+];
+
+const makeCrewmate = (crewmate: Amogus) => {
+    const image = getImage(crewmate);
+    return (
+        <div
+            key={crewmate.key}
+            className={style.container}
+            style={{ top: crewmate.posY, left: crewmate.posX }}
+        >
+            <img src={image} alt="Amogus" />
+        </div>
+    );
+};
+
+const stepCrewmates = (list: Amogus[]) => {
+    const { innerWidth: width, innerHeight: height } = window;
+    const newCrewmates = list.slice();
+    for (const c of newCrewmates) {
+        let newX = c.posX + c.speedX;
+        let newY = c.posY + c.speedY;
+        if (newX > width - 90) {
+            newX = width - 90;
+            c.speedX *= -1;
+        }
+        if (newX < 0) {
+            newX = 0;
+            c.speedX *= -1;
+        }
+        if (newY > height - 120) {
+            newY = height - 120;
+            c.speedY *= -1;
+        }
+        if (newY < 0) {
+            newY = 0;
+            c.speedY *= -1;
+        }
+        c.posX = newX;
+        c.posY = newY;
+    }
+    return newCrewmates;
+};
+
+export default function Amogus() {
+    const [crewmates, setCrewmates] = useState(initialCrewmates);
+
+    useEffect(() => {
+        const timer = setInterval(() => {
+            const c = crewmates;
+            setCrewmates(stepCrewmates(c));
+        }, 100);
+        return () => {
+            clearInterval(timer);
+        };
+    }, [crewmates]);
+
+    return <>{crewmates.map((c) => makeCrewmate(c))}</>;
+}