Smithing table

tests/base_game_test.ts

@@ -195,3 +195,70 @@ Deno.test("chests and furnaces from a world saved before they were mod code keep
 	assert(saved.tiles.every((tile: Msg) => tile.data === undefined && tile.containers === undefined));
 	assertEquals(Object.keys(saved.containers).length, 2);
 });
+
+Deno.test("a smithing table upgrades a wooden pickaxe with 5 stone, using up exactly that", async () => {
+	const t = await setup([["bworld:wood_pickaxe", 1], ["bworld:stone", 7]]);
+	t.game.set_block(1, 100, 0, "bworld:smithing_table");
+	let messages = t.take(1);
+	const pickaxe = slot_of(messages, "bworld:wood_pickaxe");
+	const stone = slot_of(messages, "bworld:stone");
+
+	t.send(1, { type: "use_block", x: 1, y: 100, z: 0, face: "top" });
+	const opened = t.take(1).find((m) => m.type === "open_screen");
+	assertEquals(opened.layout.slots.map((s: Msg) => [s.index, s.output ?? false]), [
+		[0, false],
+		[1, false],
+		[2, false],
+		[3, true],
+	]);
+
+	// with only the tool there's nothing to take
+	move_to_screen(t, pickaxe, 0);
+	t.game.tick();
+	t.send(1, { type: "click", container: "screen", index: 3, button: 0 });
+	assertEquals(t.take(1).filter((m) => m.type === "cursor").at(-1)?.item ?? null, null);
+
+	// the result shows up once there's enough stone, and taking it uses up the pickaxe and 5 stone
+	move_to_screen(t, stone, 1);
+	t.game.tick();
+	assertEquals(last_container(t.take(1), "screen")[3], { id: "bworld:stone_pickaxe", count: 1 });
+	t.send(1, { type: "click", container: "screen", index: 3, button: 0 });
+	messages = t.take(1);
+	assertEquals(messages.filter((m) => m.type === "cursor").at(-1).item, { id: "bworld:stone_pickaxe", count: 1 });
+	assertEquals(last_container(messages, "screen"), [null, { id: "bworld:stone", count: 2 }, null, null]);
+
+	// closing gives back the leftover stone, and the cursor's pickaxe goes into the inventory
+	t.send(1, { type: "close_screen" });
+	const inventory = last_container(t.take(1), "inventory").filter((i: Msg) => i);
+	assertEquals(
+		inventory.sort((a: Msg, b: Msg) => a.id.localeCompare(b.id)),
+		[{ id: "bworld:stone", count: 2 }, { id: "bworld:stone_pickaxe", count: 1 }],
+	);
+	assertEquals(t.game.containers.size, 0);
+});
+
+Deno.test("a smithing result can't be taken once its inputs are gone, even before it updates", async () => {
+	const t = await setup([["bworld:wood_pickaxe", 1], ["bworld:stone", 5]]);
+	t.game.set_block(1, 100, 0, "bworld:smithing_table");
+	const messages = t.take(1);
+	t.send(1, { type: "use_block", x: 1, y: 100, z: 0, face: "top" });
+	move_to_screen(t, slot_of(messages, "bworld:wood_pickaxe"), 0);
+	move_to_screen(t, slot_of(messages, "bworld:stone"), 1);
+	t.game.tick();
+
+	// take the pickaxe back out and try the result in the same tick
+	t.send(1, { type: "click", container: "screen", index: 0, button: 0 });
+	t.send(1, { type: "click", container: "inventory", index: 20, button: 0 });
+	t.send(1, { type: "click", container: "screen", index: 3, button: 0 });
+	const cursor = t.take(1).filter((m) => m.type === "cursor").at(-1).item;
+	assertEquals(cursor, null);
+
+	// and an extra item in the third slot doesn't match a recipe without one
+	t.send(1, { type: "click", container: "inventory", index: 20, button: 0 });
+	t.send(1, { type: "click", container: "screen", index: 0, button: 0 });
+	t.send(1, { type: "chat", text: "/give bworld:coal 1" });
+	const coal = slot_of(t.take(1), "bworld:coal");
+	move_to_screen(t, coal, 2);
+	t.game.tick();
+	assertEquals(last_container(t.take(1), "screen")[3], null);
+});