import { useCallback, useEffect, useRef, useState } from "react"; import "./styles.css"; type Phase = "intro" | "running" | "over"; type Point = { x: number; y: number }; type Salvage = Point & { radius: number; spin: number; value: number }; type Mine = Point & { radius: number; pulse: number; driftX: number; driftY: number }; type Particle = Point & { vx: number; vy: number; life: number; color: string }; type Hud = { score: number; combo: number; shield: number; energy: number; time: number }; const INITIAL_HUD: Hud = { score: 0, combo: 1, shield: 3, energy: 100, time: 45 }; function randomBetween(min: number, max: number) { return min + Math.random() * (max - min); } function wrap(value: number, limit: number) { if (value < -30) return limit + 30; if (value > limit + 30) return -30; return value; } export default function App() { const canvasRef = useRef(null); const phaseRef = useRef("intro"); const [phase, setPhase] = useState("intro"); const [runId, setRunId] = useState(0); const [hud, setHud] = useState(INITIAL_HUD); const [best, setBest] = useState(0); useEffect(() => { phaseRef.current = phase; }, [phase]); useEffect(() => { const saved = Number(window.localStorage.getItem("orbital-salvage-best") || 0); setBest(Number.isFinite(saved) ? saved : 0); }, []); const begin = useCallback(() => { setHud(INITIAL_HUD); setPhase("running"); setRunId((value) => value + 1); }, []); useEffect(() => { const canvas = canvasRef.current; if (!canvas) return; const context = canvas.getContext("2d"); if (!context) return; let width = 1; let height = 1; let animationFrame = 0; let previousTime = performance.now(); let hudClock = 0; let elapsed = 0; let salvageClock = 0; let mineClock = 0; let score = 0; let combo = 1; let shield = 3; let energy = 100; let ended = false; const player = { x: 300, y: 300, vx: 0, vy: 0, rotation: 0 }; const pointer = { x: 0, y: 0, active: false }; const keys = new Set(); const salvage: Salvage[] = []; const mines: Mine[] = []; const particles: Particle[] = []; const stars: Array = []; const trail: Point[] = []; function resize() { const rectangle = canvas.getBoundingClientRect(); const ratio = Math.min(window.devicePixelRatio || 1, 2); width = Math.max(1, rectangle.width); height = Math.max(1, rectangle.height); canvas.width = Math.round(width * ratio); canvas.height = Math.round(height * ratio); context.setTransform(ratio, 0, 0, ratio, 0, 0); player.x = Math.min(player.x, width * 0.85); player.y = Math.min(player.y, height * 0.85); if (stars.length === 0) { for (let index = 0; index < 120; index += 1) { stars.push({ x: Math.random() * width, y: Math.random() * height, alpha: randomBetween(0.15, 0.75), size: randomBetween(0.5, 1.7), }); } } } function addSalvage() { salvage.push({ x: randomBetween(70, Math.max(71, width - 70)), y: randomBetween(70, Math.max(71, height - 70)), radius: randomBetween(11, 17), spin: Math.random() * Math.PI, value: Math.random() > 0.78 ? 250 : 100, }); } function addMine() { const edge = Math.floor(Math.random() * 4); const positions = [ { x: -20, y: Math.random() * height }, { x: width + 20, y: Math.random() * height }, { x: Math.random() * width, y: -20 }, { x: Math.random() * width, y: height + 20 }, ]; const position = positions[edge]; const angle = Math.atan2(height / 2 - position.y, width / 2 - position.x); const speed = randomBetween(24, 48) + elapsed * 0.5; mines.push({ x: position.x, y: position.y, radius: randomBetween(15, 23), pulse: Math.random() * Math.PI, driftX: Math.cos(angle) * speed, driftY: Math.sin(angle) * speed, }); } function burst(x: number, y: number, color: string, count: number) { for (let index = 0; index < count; index += 1) { const angle = Math.random() * Math.PI * 2; const speed = randomBetween(35, 155); particles.push({ x, y, vx: Math.cos(angle) * speed, vy: Math.sin(angle) * speed, life: randomBetween(0.35, 0.9), color, }); } } function endGame() { if (ended) return; ended = true; phaseRef.current = "over"; const nextBest = Math.max(best, score); setBest(nextBest); window.localStorage.setItem("orbital-salvage-best", String(nextBest)); setHud({ score, combo, shield, energy, time: Math.max(0, 45 - elapsed) }); setPhase("over"); } function onKeyDown(event: KeyboardEvent) { keys.add(event.key.toLowerCase()); if (["arrowup", "arrowdown", "arrowleft", "arrowright", " "].includes(event.key.toLowerCase())) { event.preventDefault(); } } function onKeyUp(event: KeyboardEvent) { keys.delete(event.key.toLowerCase()); } function setPointer(event: PointerEvent) { const rectangle = canvas.getBoundingClientRect(); pointer.x = event.clientX - rectangle.left; pointer.y = event.clientY - rectangle.top; } function onPointerDown(event: PointerEvent) { pointer.active = true; setPointer(event); canvas.setPointerCapture(event.pointerId); } function onPointerMove(event: PointerEvent) { if (pointer.active) setPointer(event); } function onPointerUp() { pointer.active = false; } function update(delta: number) { if (phaseRef.current !== "running") return; elapsed += delta; salvageClock += delta; mineClock += delta; let inputX = 0; let inputY = 0; if (keys.has("a") || keys.has("arrowleft")) inputX -= 1; if (keys.has("d") || keys.has("arrowright")) inputX += 1; if (keys.has("w") || keys.has("arrowup")) inputY -= 1; if (keys.has("s") || keys.has("arrowdown")) inputY += 1; if (pointer.active) { const distance = Math.hypot(pointer.x - player.x, pointer.y - player.y); if (distance > 12) { inputX += (pointer.x - player.x) / distance; inputY += (pointer.y - player.y) / distance; } } const boosting = (keys.has(" ") || keys.has("shift")) && energy > 1; const thrust = boosting ? 250 : 155; const inputLength = Math.hypot(inputX, inputY) || 1; if (inputX !== 0 || inputY !== 0) { player.vx += (inputX / inputLength) * thrust * delta; player.vy += (inputY / inputLength) * thrust * delta; } if (boosting && (inputX !== 0 || inputY !== 0)) energy = Math.max(0, energy - 35 * delta); else energy = Math.min(100, energy + 16 * delta); const drag = Math.pow(0.52, delta); player.vx *= drag; player.vy *= drag; const speed = Math.hypot(player.vx, player.vy); const maxSpeed = boosting ? 310 : 205; if (speed > maxSpeed) { player.vx = (player.vx / speed) * maxSpeed; player.vy = (player.vy / speed) * maxSpeed; } player.x = wrap(player.x + player.vx * delta, width); player.y = wrap(player.y + player.vy * delta, height); if (speed > 4) player.rotation = Math.atan2(player.vy, player.vx); trail.unshift({ x: player.x, y: player.y }); if (trail.length > 18) trail.pop(); if (salvageClock > Math.max(0.7, 1.45 - elapsed * 0.01)) { salvageClock = 0; if (salvage.length < 7) addSalvage(); } if (mineClock > Math.max(0.8, 2.35 - elapsed * 0.025)) { mineClock = 0; addMine(); } for (let index = salvage.length - 1; index >= 0; index -= 1) { const item = salvage[index]; item.spin += delta * 1.8; if (Math.hypot(item.x - player.x, item.y - player.y) < item.radius + 12) { score += item.value * combo; combo = Math.min(8, combo + 1); burst(item.x, item.y, item.value > 100 ? "#ffd166" : "#7df9ff", 18); salvage.splice(index, 1); } } for (let index = mines.length - 1; index >= 0; index -= 1) { const mine = mines[index]; mine.x += mine.driftX * delta; mine.y += mine.driftY * delta; mine.pulse += delta * 3; if (Math.hypot(mine.x - player.x, mine.y - player.y) < mine.radius + 11) { shield -= 1; combo = 1; burst(mine.x, mine.y, "#ff4d6d", 30); mines.splice(index, 1); if (shield <= 0) endGame(); } else if (mine.x < -100 || mine.x > width + 100 || mine.y < -100 || mine.y > height + 100) { mines.splice(index, 1); } } for (let index = particles.length - 1; index >= 0; index -= 1) { const particle = particles[index]; particle.x += particle.vx * delta; particle.y += particle.vy * delta; particle.vx *= Math.pow(0.1, delta); particle.vy *= Math.pow(0.1, delta); particle.life -= delta; if (particle.life <= 0) particles.splice(index, 1); } hudClock += delta; if (hudClock > 0.08) { hudClock = 0; setHud({ score, combo, shield, energy, time: Math.max(0, 45 - elapsed) }); } if (elapsed >= 45) endGame(); } function draw(time: number) { context.clearRect(0, 0, width, height); const background = context.createRadialGradient(width * 0.35, height * 0.3, 0, width * 0.5, height * 0.5, Math.max(width, height)); background.addColorStop(0, "#142f4a"); background.addColorStop(0.45, "#071725"); background.addColorStop(1, "#02060d"); context.fillStyle = background; context.fillRect(0, 0, width, height); context.strokeStyle = "rgba(92, 179, 196, 0.07)"; context.lineWidth = 1; const grid = 56; const driftX = (time * 0.008) % grid; for (let x = driftX; x < width; x += grid) { context.beginPath(); context.moveTo(x, 0); context.lineTo(x, height); context.stroke(); } for (let y = driftX; y < height; y += grid) { context.beginPath(); context.moveTo(0, y); context.lineTo(width, y); context.stroke(); } stars.forEach((star, index) => { context.globalAlpha = star.alpha * (0.75 + Math.sin(time * 0.001 + index) * 0.25); context.fillStyle = "#d8fbff"; context.beginPath(); context.arc(star.x, star.y, star.size, 0, Math.PI * 2); context.fill(); }); context.globalAlpha = 1; trail.forEach((point, index) => { const alpha = (1 - index / trail.length) * 0.3; context.fillStyle = "rgba(88, 239, 255, " + alpha + ")"; context.beginPath(); context.arc(point.x, point.y, Math.max(1, 7 - index * 0.3), 0, Math.PI * 2); context.fill(); }); salvage.forEach((item) => { context.save(); context.translate(item.x, item.y); context.rotate(item.spin); context.shadowBlur = 22; context.shadowColor = item.value > 100 ? "#ffd166" : "#62eaf5"; context.strokeStyle = item.value > 100 ? "#ffd166" : "#8ff7ff"; context.lineWidth = 3; context.strokeRect(-item.radius * 0.65, -item.radius * 0.65, item.radius * 1.3, item.radius * 1.3); context.rotate(Math.PI / 4); context.strokeRect(-item.radius * 0.42, -item.radius * 0.42, item.radius * 0.84, item.radius * 0.84); context.restore(); }); mines.forEach((mine) => { context.save(); context.translate(mine.x, mine.y); context.shadowBlur = 22 + Math.sin(mine.pulse) * 8; context.shadowColor = "#ff345f"; context.fillStyle = "#3c0b19"; context.strokeStyle = "#ff5575"; context.lineWidth = 2; context.beginPath(); context.arc(0, 0, mine.radius, 0, Math.PI * 2); context.fill(); context.stroke(); for (let spike = 0; spike < 8; spike += 1) { context.rotate(Math.PI / 4); context.beginPath(); context.moveTo(mine.radius - 2, 0); context.lineTo(mine.radius + 8, 0); context.stroke(); } context.restore(); }); particles.forEach((particle) => { context.globalAlpha = Math.max(0, particle.life * 1.5); context.fillStyle = particle.color; context.fillRect(particle.x - 2, particle.y - 2, 4, 4); }); context.globalAlpha = 1; context.save(); context.translate(player.x, player.y); context.rotate(player.rotation); context.shadowBlur = 28; context.shadowColor = "#6cf5ff"; context.fillStyle = "#dfffff"; context.strokeStyle = "#5fe9f5"; context.lineWidth = 2; context.beginPath(); context.moveTo(17, 0); context.lineTo(-10, -10); context.lineTo(-5, 0); context.lineTo(-10, 10); context.closePath(); context.fill(); context.stroke(); if (phaseRef.current === "running") { context.fillStyle = "#ffb45c"; context.beginPath(); context.moveTo(-7, -4); context.lineTo(-18 - Math.random() * 9, 0); context.lineTo(-7, 4); context.fill(); } context.restore(); } function frame(time: number) { const delta = Math.min(0.033, (time - previousTime) / 1000); previousTime = time; update(delta); draw(time); animationFrame = requestAnimationFrame(frame); } resize(); player.x = width / 2; player.y = height / 2; if (phaseRef.current === "running") { for (let index = 0; index < 4; index += 1) addSalvage(); addMine(); } const resizeObserver = new ResizeObserver(resize); resizeObserver.observe(canvas); window.addEventListener("keydown", onKeyDown); window.addEventListener("keyup", onKeyUp); canvas.addEventListener("pointerdown", onPointerDown); canvas.addEventListener("pointermove", onPointerMove); canvas.addEventListener("pointerup", onPointerUp); canvas.addEventListener("pointercancel", onPointerUp); animationFrame = requestAnimationFrame(frame); return () => { cancelAnimationFrame(animationFrame); resizeObserver.disconnect(); window.removeEventListener("keydown", onKeyDown); window.removeEventListener("keyup", onKeyUp); canvas.removeEventListener("pointerdown", onPointerDown); canvas.removeEventListener("pointermove", onPointerMove); canvas.removeEventListener("pointerup", onPointerUp); canvas.removeEventListener("pointercancel", onPointerUp); }; }, [best, runId]); return (

); }

{phase === "intro" ? "Pull the lost cores out of a collapsing orbit." : String(hud.score).padStart(6, "0") + " credits banked"}