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src/config/color-interactions.ts

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+import type {
+  AgentColorInteractionSettings,
+  NumberControlConfig,
+} from './types';
+
+const agentInteractionOptions: Record<string, number> = {
+  Follow: 1,
+  Avoid: -1,
+  Ignore: 0,
+};
+
+export const defaultColorInteractionSettings: AgentColorInteractionSettings = {
+  color1ToColor1: 1,
+  color1ToColor2: 0,
+  color1ToColor3: 0,
+  color2ToColor1: 0,
+  color2ToColor2: 1,
+  color2ToColor3: 0,
+  color3ToColor1: 0,
+  color3ToColor2: 0,
+  color3ToColor3: 1,
+};
+
+const hashString = (value: string): number => {
+  let hash = 0x811c9dc5;
+  for (let i = 0; i < value.length; i++) {
+    hash ^= value.charCodeAt(i);
+    hash = Math.imul(hash, 0x01000193);
+  }
+  return hash >>> 0;
+};
+
+const createSeededRandom = (seed: number): (() => number) => {
+  let state = seed;
+  return () => {
+    let value = (state += 0x6d2b79f5);
+    value = Math.imul(value ^ (value >>> 15), value | 1);
+    value ^= value + Math.imul(value ^ (value >>> 7), value | 61);
+    return ((value ^ (value >>> 14)) >>> 0) / 4294967296;
+  };
+};
+
+export const createColorInteractionSettings = (
+  seedSource: string
+): AgentColorInteractionSettings => {
+  const random = createSeededRandom(hashString(seedSource));
+  const values = Object.values(agentInteractionOptions);
+  const randomInteraction = () =>
+    values[Math.floor(random() * values.length)] ?? defaultColorInteractionSettings.color1ToColor2;
+
+  return {
+    color1ToColor1: 1,
+    color1ToColor2: randomInteraction(),
+    color1ToColor3: randomInteraction(),
+    color2ToColor1: randomInteraction(),
+    color2ToColor2: 1,
+    color2ToColor3: randomInteraction(),
+    color3ToColor1: randomInteraction(),
+    color3ToColor2: randomInteraction(),
+    color3ToColor3: 1,
+  };
+};
+
+export const colorInteractionControl = (label: string): NumberControlConfig => ({
+  folder: 'Color Reactions',
+  label,
+  min: -1,
+  max: 1,
+  step: 1,
+  options: agentInteractionOptions,
+});