Implement main game as a mod

server/game/world.ts

@@ -1,6 +1,6 @@
 import { AIR, CHUNK_AREA, CHUNK_HEIGHT, CHUNK_SIZE, ID_MASK } from "$/common/constants.ts";
 import { BlockRegistry, EverythingRegistry } from "$/common/everything_registry.ts";
-import { generate_raw_chunk, RawChunk } from "$/common/generation.ts";
+import { generate_raw_chunk, RawChunk, WorldgenSetup } from "$/common/generation.ts";
 import { Container } from "$/common/inventory.ts";
 import { AIR_ID, BlockChange } from "$/common/protocol.ts";
 import { chunk_key } from "$/common/utils.ts";
@@ -18,6 +18,8 @@ export interface Tile {
 	z: number;
 	data: Record<string, unknown>;
 	containers: Record<string, Container>;
+	// a mod block's data, what BlockRef.data holds
+	mod_data?: unknown;
 }
 
 export function position_key(x: number, y: number, z: number) {
@@ -28,6 +30,7 @@ export function position_key(x: number, y: number, z: number) {
 export class ServerWorld {
 	readonly seed: string;
 	readonly block_ids: Record<string, number> = {};
+	readonly worldgen: WorldgenSetup | undefined;
 
 	// what generation made, and the final blocks with neighbors' leaves and player changes applied
 	#raw = new LruMap<number, RawChunk>(RAW_CACHE_SIZE);
@@ -42,8 +45,9 @@ export class ServerWorld {
 
 	on_block_change?: (x: number, y: number, z: number, id: string) => void;
 
-	constructor(seed: string) {
+	constructor(seed: string, worldgen?: WorldgenSetup) {
 		this.seed = seed;
+		this.worldgen = worldgen;
 		EverythingRegistry.get_registry<BlockRegistry>("blocks").forEach((block, nid) => {
 			this.block_ids[block.id] = nid;
 		});
@@ -131,7 +135,7 @@ export class ServerWorld {
 		const key = chunk_key(chunk_x, chunk_z);
 		let raw = this.#raw.get(key);
 		if (!raw) {
-			raw = generate_raw_chunk(chunk_x, chunk_z, this.seed, this.block_ids);
+			raw = generate_raw_chunk(chunk_x, chunk_z, this.seed, this.block_ids, this.worldgen);
 			this.#raw.set(key, raw);
 		}
 		return raw;