function createGame({ sdk }) { var W = sdk.W, H = sdk.H, CX = W / 2, CY = H / 2, SR = 92, CORE = 22; var ang, ball, bricks, bolts, t, lives, fireT, ringR, grace; sdk.music({ mood: "intense" }); sdk.bg("glow", { color: "#0d2b4a", base: "#03060f", x: 0.5, y: 0.5, r: 0.7, pulse: 0.22 }); sdk.tweaks({ arc: { value: 1.5, min: 0.9, max: 2.6, step: 0.1, label: "Shield arc", desc: "Radians of coverage", group: "Shield" }, ballspeed: { value: 175, min: 120, max: 300, step: 10, label: "Ball speed", group: "Ball" }, boltspeed: { value: 95, min: 60, max: 180, step: 10, label: "Bolt speed", desc: "How fast bricks fire back", group: "Enemies" }, firerate: { value: 2.0, min: 1.0, max: 3.5, step: 0.1, label: "Fire cadence", desc: "Seconds between brick bolts", group: "Enemies" }, seed: { kind: "seed", value: 1234, label: "Brick ring", group: "Look" } }); var WALL; // outer arena radius function buildRing() { bricks = []; var rnd = sdk.rng(sdk.tweak("seed")); var n = 20; ringR = Math.min(W, H) * 0.42; for (var i = 0; i < n; i++) { if (rnd() < 0.18) continue; var a = (i / n) * 6.283; bricks.push({ a: a, r: ringR, alive: true, hue: 200 + Math.floor(rnd() * 140), live: rnd() < 0.5 }); } } function launchBall() { // launch outward from just above the shield radius so it heads toward bricks/wall, // then MUST be caught on its way back in by an aimed shield. var a = Math.random() * 6.283; var v = sdk.tweak("ballspeed"); var r0 = SR + 26; ball = { x: CX + Math.cos(a) * r0, y: CY + Math.sin(a) * r0, vx: Math.cos(a) * v, vy: Math.sin(a) * v, r: 8, deflectCd: 0 }; } sdk.run({ reset: function () { ang = -Math.PI / 2; t = 0; lives = 3; fireT = 0; grace = 1.2; WALL = Math.min(W, H) * 0.5 - 6; bolts = []; buildRing(); launchBall(); }, update: function (dt, input) { t += dt; if (grace > 0) grace -= dt; if (ball.deflectCd > 0) ball.deflectCd -= dt; if (input.pointerX !== null) ang = Math.atan2(input.pointerY - CY, input.pointerX - CX); else { if (input.left) ang -= 3.5 * dt; if (input.right) ang += 3.5 * dt; } var v = sdk.tweak("ballspeed") + t * 4; var bs = Math.sqrt(ball.vx * ball.vx + ball.vy * ball.vy) || 1; ball.vx = ball.vx / bs * v; ball.vy = ball.vy / bs * v; ball.x += ball.vx * dt; ball.y += ball.vy * dt; var dx = ball.x - CX, dy = ball.y - CY; var dist = Math.sqrt(dx * dx + dy * dy) || 1; var ba = Math.atan2(dy, dx); var inward = (ball.vx * dx + ball.vy * dy) < 0; // ARENA WALL: no free bounce. The ball passes it going out and rides back in. // Only softly redirect if it somehow overshoots far, so it can't escape forever — // but a wall touch gives NO points (bounce is passive, not a play action). if (dist > WALL) { var nx = dx / dist, ny = dy / dist; var dot = ball.vx * nx + ball.vy * ny; ball.vx -= 2 * dot * nx; ball.vy -= 2 * dot * ny; ball.x = CX + nx * (WALL - 1); ball.y = CY + ny * (WALL - 1); } // SHIELD DEFLECT — the only way the ball earns points, and it MUST be aimed. // Requires: ball moving inward, at the shield radius, AND the shield arc actually // covering the ball's current angle. Cooldown prevents multi-frame double scoring. var arcW = sdk.tweak("arc"); var diff = Math.atan2(Math.sin(ba - ang), Math.cos(ba - ang)); var covered = Math.abs(diff) < arcW / 2; if (dist < SR + ball.r && dist > CORE + 6 && inward && covered && ball.deflectCd <= 0) { var rx = dx / dist, ry = dy / dist; var d2 = ball.vx * rx + ball.vy * ry; ball.vx -= 2 * d2 * rx; ball.vy -= 2 * d2 * ry; // angle influence: where on the shield you caught it steers the bounce ball.vx += diff * 60; ball.vy += diff * (rx !== 0 ? 0 : 0); // renormalize after the nudge so speed stays authoritative var ns = Math.sqrt(ball.vx * ball.vx + ball.vy * ball.vy) || 1; ball.vx = ball.vx / ns * v; ball.vy = ball.vy / ns * v; ball.x = CX + rx * (SR + ball.r + 3); ball.y = CY + ry * (SR + ball.r + 3); ball.deflectCd = 0.25; sdk.addScore(1); sdk.juice.popup("+1", ball.x, ball.y, "#22d3ee"); sdk.juice.burst(ball.x, ball.y, "#22d3ee", 10, 180); sdk.juice.shake(2); sdk.tone("score"); } // CORE HIT — missed the shield. During grace the core is protected once. if (dist < CORE + ball.r && inward) { if (grace > 0) { // forgiving first touch: bounce it back out instead of losing a life var gx = dx / dist, gy = dy / dist; var gd = ball.vx * gx + ball.vy * gy; ball.vx -= 2 * gd * gx; ball.vy -= 2 * gd * gy; ball.x = CX + gx * (CORE + ball.r + 2); ball.y = CY + gy * (CORE + ball.r + 2); } else { lives--; sdk.juice.shake(9); sdk.juice.flash(0.35); sdk.tone("hit"); sdk.juice.burst(CX, CY, "#ff5d7d", 18); if (lives <= 0) return sdk.gameOver(); launchBall(); } } // ball vs bricks for (var i = 0; i < bricks.length; i++) { var b = bricks[i]; if (!b.alive) continue; var bx = CX + Math.cos(b.a) * b.r, by = CY + Math.sin(b.a) * b.r; var ex = ball.x - bx, ey = ball.y - by; if (ex * ex + ey * ey < (14 + ball.r) * (14 + ball.r)) { b.alive = false; var pts = b.live ? 3 : 1; sdk.addScore(pts); sdk.juice.burst(bx, by, "hsl(" + b.hue + ",80%,60%)", 14, 200); sdk.juice.popup("+" + pts, bx, by, "#ffd166"); sdk.tone("pickup"); var bd = Math.sqrt(ex * ex + ey * ey) || 1; var brx = ex / bd, bry = ey / bd; var bdot = ball.vx * brx + ball.vy * bry; ball.vx -= 2 * bdot * brx; ball.vy -= 2 * bdot * bry; break; } } // bricks fight back — bolts fired inward (none for first 4s) fireT += dt; var cadence = Math.max(0.7, sdk.tweak("firerate") - t * 0.02); if (t > 4 && fireT >= cadence) { fireT = 0; var alive = []; for (var k = 0; k < bricks.length; k++) if (bricks[k].alive && bricks[k].live) alive.push(bricks[k]); if (alive.length) { var src = alive[Math.floor(Math.random() * alive.length)]; bolts.push({ a: src.a, d: src.r }); } } // bolts travel inward; shield blocks them ONLY if aimed to cover their angle var bv = sdk.tweak("boltspeed") + t * 3; for (var j = bolts.length - 1; j >= 0; j--) { var bo = bolts[j]; bo.d -= bv * dt; var bdiff = Math.atan2(Math.sin(bo.a - ang), Math.cos(bo.a - ang)); if (bo.d <= SR + 8 && bo.d > CORE + 6 && Math.abs(bdiff) < arcW / 2) { bolts.splice(j, 1); sdk.addScore(1); sdk.juice.popup("+1", CX + Math.cos(bo.a) * SR, CY + Math.sin(bo.a) * SR, "#57f2a8"); sdk.juice.burst(CX + Math.cos(bo.a) * SR, CY + Math.sin(bo.a) * SR, "#57f2a8", 8, 150); sdk.tone("score"); continue; } if (bo.d <= CORE + 6) { bolts.splice(j, 1); if (grace > 0) continue; lives--; sdk.juice.shake(11); sdk.juice.flash(0.5); sdk.tone("hit"); sdk.juice.burst(CX, CY, "#ff5d7d", 20); if (lives <= 0) return sdk.gameOver(); } } // rebuild ring when cleared var anyAlive = false; for (var m = 0; m < bricks.length; m++) if (bricks[m].alive) { anyAlive = true; break; } if (!anyAlive) { sdk.juice.popup("RING CLEARED!", CX, CY - 40, "#ffd166"); sdk.juice.flash(0.2); buildRing(); } }, draw: function (c) { c.save(); c.strokeStyle = "#123049"; c.lineWidth = 1; for (var rr = 50; rr < Math.min(W, H) * 0.5; rr += 46) { c.beginPath(); c.arc(CX, CY, rr, 0, 6.283); c.stroke(); } c.restore(); for (var i = 0; i < bricks.length; i++) { var b = bricks[i]; if (!b.alive) continue; var bx = CX + Math.cos(b.a) * b.r, by = CY + Math.sin(b.a) * b.r; c.save(); c.translate(bx, by); c.rotate(b.a + Math.PI / 2); c.shadowColor = "hsl(" + b.hue + ",80%,55%)"; c.shadowBlur = b.live ? 14 : 6; c.fillStyle = "hsl(" + b.hue + ",70%," + (b.live ? "58%" : "42%") + ")"; sdk.roundRect(c, -16, -9, 32, 18, 4); if (b.live) { c.fillStyle = "#fff2a8"; sdk.circle(c, 0, 0, 3); } c.restore(); } for (var j = 0; j < bolts.length; j++) { var bo = bolts[j]; var lx = CX + Math.cos(bo.a) * bo.d, ly = CY + Math.sin(bo.a) * bo.d; c.save(); c.shadowColor = "#ff7d3c"; c.shadowBlur = 12; c.fillStyle = "#ff9d4d"; sdk.circle(c, lx, ly, 6); c.restore(); } c.save(); c.shadowColor = "#ff2d78"; c.shadowBlur = 20; c.fillStyle = lives > 1 ? "#ff2d78" : "#ff5d5d"; sdk.circle(c, CX, CY, CORE); c.restore(); var arcW = sdk.tweak("arc"); c.save(); c.strokeStyle = "#22d3ee"; c.shadowColor = "#22d3ee"; c.shadowBlur = 18; c.lineWidth = 9; c.lineCap = "round"; c.beginPath(); c.arc(CX, CY, SR, ang - arcW / 2, ang + arcW / 2); c.stroke(); c.restore(); c.save(); c.shadowColor = "#ffffff"; c.shadowBlur = 14; c.fillStyle = "#ffffff"; sdk.circle(c, ball.x, ball.y, ball.r); c.restore(); c.font = "18px system-ui"; c.textAlign = "left"; c.textBaseline = "alphabetic"; var hearts = ""; for (var q = 0; q < lives; q++) hearts += "❤️"; c.fillText(hearts, 12, 30); } }); }

Orbit Shield

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