Fix transparent blocks

client/workers/chunk_messages.ts

@@ -1,6 +1,7 @@
 import type { BlockRegistry } from "$/common/everything_registry.ts";
 import type { SpriteRegion } from "$/common/constants.ts";
 import type { OreJson } from "$/common/mod_data.ts";
+import type { SortType } from "./translucent_sort.ts";
 
 // messages between the main thread and the chunk workers
 
@@ -17,7 +18,30 @@ export type ToChunkWorker =
 		ores: OreJson[];
 	}
 	| { type: "generate"; chunk_x: number; chunk_z: number; seed: string }
-	| { type: "mesh"; chunk_x: number; chunk_z: number; version: number; padded_chunk: Uint32Array };
+	| {
+		type: "mesh";
+		chunk_x: number;
+		chunk_z: number;
+		version: number;
+		padded_chunk: Uint32Array;
+		// where the camera is, to sort the translucent quads
+		camera: number[];
+	}
+	| {
+		type: "sort";
+		chunk_x: number;
+		chunk_z: number;
+		version: number;
+		sort_version: number;
+		centers: Float32Array;
+		camera: number[];
+	};
+
+// 4 vertices per quad
+export interface LayerMesh {
+	vertices: Float32Array;
+	quad_count: number;
+}
 
 export type FromChunkWorker =
 	| {
@@ -33,8 +57,23 @@ export type FromChunkWorker =
 		chunk_x: number;
 		chunk_z: number;
 		version: number;
-		opaque_vertices: Float32Array;
-		opaque_count: number;
-		transparent_vertices: Float32Array;
-		transparent_count: number;
+		solid: LayerMesh;
+		cutout: LayerMesh;
+		translucent: LayerMesh & {
+			// sorted back to front for the camera the mesh was requested with
+			indices: Uint32Array;
+			sort_type: SortType;
+			// what resorting needs, see translucent_sort.ts
+			centers: Float32Array;
+			planes: [Float32Array, Float32Array, Float32Array];
+		};
+		camera: number[];
+	}
+	| {
+		type: "sorted";
+		chunk_x: number;
+		chunk_z: number;
+		version: number;
+		sort_version: number;
+		indices: Uint32Array;
 	};