refactor(religions): spread folk religion

src/scripts/generation/pack/religions/expandReligions.ts

@@ -1,7 +1,43 @@
-export function expandReligions(
-  religions: Pick<IReligion, "i" | "center" | "culture" | "expansion" | "expansionism">[]
-) {
-  const religionIds = new Uint16Array();
+import FlatQueue from "flatqueue";
+import {getInputNumber} from "utils/nodeUtils";
+import {gauss} from "utils/probabilityUtils";
+import {isReligion} from "utils/typeUtils";
+
+type TReligionData = Pick<IReligion, "i" | "type" | "center" | "culture" | "expansion" | "expansionism">;
+type TCellsData = Pick<IPack["cells"], "i" | "c" | "culture">;
+
+export function expandReligions(religions: TReligionData[], cells: TCellsData) {
+  const religionIds = spreadFolkReligions(religions, cells);
+
+  const queue = new FlatQueue<{cellId: number; religionId: number}>();
+  const cost: number[] = [];
+
+  const neutralInput = getInputNumber("neutralInput");
+  const maxExpansionCost = (cells.i.length / 25) * gauss(1, 0.3, 0.2, 2, 2) * neutralInput;
+
+  for (const religion of religions) {
+    if (!isReligion(religion as IReligion) || (religion as IReligion).type === "Folk") continue;
+
+    const {i: religionId, center: cellId} = religion;
+    religionIds[cellId] = religionId;
+    cost[cellId] = 1;
+    queue.push({cellId, religionId}, 0);
+  }
+
+  return religionIds;
+}
+
+// folk religions initially get all cells of their culture
+function spreadFolkReligions(religions: TReligionData[], cells: TCellsData) {
+  const religionIds = new Uint16Array(cells.i.length);
+
+  const folkReligions = religions.filter(({type}) => type === "Folk");
+  const cultureToReligionMap = new Map<number, number>(folkReligions.map(({i, culture}) => [culture, i]));
+
+  for (const cellId of cells.i) {
+    const cultureId = cells.culture[cellId];
+    religionIds[cellId] = cultureToReligionMap.get(cultureId) || 0;
+  }
 
   return religionIds;
 }