Basic gameplay?

client/tiles/tree.ts

@@ -0,0 +1,17 @@
+import { EverythingRegistry, TileRegistry } from "$/common/everything_registry.ts";
+import { ItemStack, PlayerInventory } from "../components/inventory.ts";
+
+EverythingRegistry.register<TileRegistry>("tiles", "bworld:tree", {
+	texture_id: "bworld:tree",
+	has_collision: false,
+
+	on_click(world, tile) {
+		const [player] = world.get_tag("player")!;
+		const player_inventory = player.get(PlayerInventory)!;
+		const maybe_item = player_inventory.container.get_item(player_inventory.hotbar_selected);
+		if (maybe_item && maybe_item.type_id === "bworld:axe") {
+			tile.id = "bworld:grass";
+			player_inventory.container.add_item(new ItemStack("bworld:log", 7));
+		}
+	},
+});