Refactor & improve

src/game-loop/spawn-agents.ts

@@ -0,0 +1,29 @@
+import { Agent } from '../pipelines/agents/agent';
+import { settings } from '../settings';
+import { Random } from '../utils/random';
+
+import { vec2 } from 'gl-matrix';
+
+export const spawnAgents = (canvasSize: vec2, agentCount: number): Array<Agent> => {
+  const minSize = Math.min(...canvasSize);
+  const ratio = Math.max(...canvasSize) / minSize;
+  const size = vec2.scale(vec2.create(), canvasSize, 1 / minSize);
+  vec2.normalize(size, size);
+  return new Array(agentCount).fill(0).map(() => {
+    const radius = Random.randomBetween(0, settings.startingRadius / ratio);
+    const angle = Random.randomBetween(0, Math.PI * 2);
+    const center = vec2.fromValues(0.5, 0.5);
+
+    const delta = vec2.fromValues(Math.cos(angle) * radius, Math.sin(angle) * radius);
+    vec2.divide(delta, delta, size);
+
+    const position = vec2.add(vec2.create(), center, delta);
+
+    return {
+      position,
+      angle: angle + Math.PI,
+      species: 0,
+      timeToLive: Random.randomBetween(10, 15000),
+    };
+  });
+};