Initial commit: Siege Protocol

Inverted tower-defense browser game — deploy enemies yourself, tower auto-kills them, pocket credits, upgrade weapons. HTML + Canvas + vanilla JS, no build step.

Co-Authored-By: claude-flow <ruv@ruv.net>

js/particles.js

@@ -0,0 +1,59 @@
+// ═══ particles.js ═══
+// ============================================================
+//  PARTICLES.JS — Particles, floaters, damage numbers
+// ============================================================
+
+const MAX_PARTICLES = 400;
+const MAX_FLOATERS = 40;
+
+function spawnParticle(x, y, color, vx, vy, life, radius, decay) {
+  if (G.particles.length >= MAX_PARTICLES) return;
+  G.particles.push({ x, y, color, vx, vy, life, radius, decay });
+}
+
+function spawnParticleBurst(x, y, color, count) {
+  const free = MAX_PARTICLES - G.particles.length;
+  const actual = Math.min(count, free);
+  for (let i = 0; i < actual; i++) {
+    const angle = Math.random() * Math.PI * 2;
+    const speed = 1 + Math.random() * 3.5;
+    spawnParticle(
+      x, y, color,
+      Math.cos(angle) * speed,
+      Math.sin(angle) * speed,
+      0.9 + Math.random() * 0.1,
+      2 + Math.random() * 4,
+      0.03 + Math.random() * 0.04
+    );
+  }
+}
+
+function spawnFloater(x, y, text, color, scale = 1.0) {
+  if (G.floaters.length >= MAX_FLOATERS) return;
+  G.floaters.push({
+    x, y, text, color, scale,
+    life: 1,
+    vy: -1.0 - Math.random() * 0.5,
+    vx: (Math.random() - 0.5) * 0.8,
+  });
+}
+
+function updateParticles() {
+  compactLiveArray(G.particles, p => {
+    p.x += p.vx;
+    p.y += p.vy;
+    p.vx *= 0.91;
+    p.vy *= 0.91;
+    p.life -= p.decay;
+    return p.life > 0;
+  });
+}
+
+function updateFloaters() {
+  compactLiveArray(G.floaters, f => {
+    f.x += f.vx;
+    f.y += f.vy;
+    f.life -= 0.018;
+    return f.life > 0;
+  });
+}