feat(world): voxel chunks + procedural underwater generation + biomes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-19 17:06:35 +02:00
parent 77b1df6060
commit 1c1ff67d88
6 changed files with 537 additions and 0 deletions
--- a/scripts/world/WorldGenerator.gd
+++ b/scripts/world/WorldGenerator.gd
@@ -0,0 +1,137 @@
+class_name WorldGenerator
+
+const CHUNK_SIZE: int = 16
+
+static func generate_chunk(chunk_x: int, chunk_y: int, chunk_z: int, seed: int) -> PackedInt32Array:
+	var data: PackedInt32Array = PackedInt32Array()
+	data.resize(4096)
+
+	var noise_surface: FastNoiseLite = FastNoiseLite.new()
+	noise_surface.seed = seed
+	noise_surface.noise_type = FastNoiseLite.TYPE_SIMPLEX_SMOOTH
+	noise_surface.frequency = 0.015
+
+	var noise_biome: FastNoiseLite = FastNoiseLite.new()
+	noise_biome.seed = seed + 1337
+	noise_biome.noise_type = FastNoiseLite.TYPE_SIMPLEX_SMOOTH
+	noise_biome.frequency = 0.004
+
+	var noise_detail: FastNoiseLite = FastNoiseLite.new()
+	noise_detail.seed = seed + 42
+	noise_detail.noise_type = FastNoiseLite.TYPE_SIMPLEX_SMOOTH
+	noise_detail.frequency = 0.05
+
+	var noise_wreck: FastNoiseLite = FastNoiseLite.new()
+	noise_wreck.seed = seed + 999
+	noise_wreck.noise_type = FastNoiseLite.TYPE_CELLULAR
+	noise_wreck.frequency = 0.03
+
+	for lx: int in range(CHUNK_SIZE):
+		for lz: int in range(CHUNK_SIZE):
+			var wx: int = chunk_x * CHUNK_SIZE + lx
+			var wz: int = chunk_z * CHUNK_SIZE + lz
+
+			var surface_val: float = noise_surface.get_noise_2d(float(wx), float(wz))
+			var ground_height: int = int(-20.0 + surface_val * 20.0)
+
+			var biome_val: float = noise_biome.get_noise_2d(float(wx), float(wz))
+			var biome: int = _get_biome(biome_val, ground_height)
+
+			var wreck_val: float = noise_wreck.get_noise_2d(float(wx), float(wz))
+			var is_wreck_center: bool = wreck_val > 0.75
+
+			for ly: int in range(CHUNK_SIZE):
+				var wy: int = chunk_y * CHUNK_SIZE + ly
+				var idx: int = lx + ly * CHUNK_SIZE + lz * 256
+
+				data[idx] = _get_block_at(wy, ground_height, biome, wx, wz, lx, lz,
+						is_wreck_center, noise_detail, seed)
+
+	return data
+
+static func _get_biome(biome_val: float, ground_height: int) -> int:
+	if biome_val > 0.5:
+		return 0
+	elif biome_val > 0.0:
+		return 1
+	elif biome_val > -0.5:
+		return 2
+	else:
+		return 3
+
+static func _get_block_at(wy: int, ground_height: int, biome: int,
+		wx: int, wz: int, lx: int, lz: int,
+		is_wreck_center: bool, noise_detail: FastNoiseLite, seed: int) -> int:
+
+	if wy <= -60:
+		return BlockDatabase.BlockType.BEDROCK
+
+	if wy < ground_height - 5:
+		return BlockDatabase.BlockType.ROCK
+
+	if wy < ground_height:
+		return BlockDatabase.BlockType.SAND
+
+	if wy == ground_height:
+		return _surface_block(biome, wx, wz, noise_detail)
+
+	if wy == ground_height + 1:
+		return _decoration_block(biome, wx, wz, noise_detail, seed)
+
+	if wy > ground_height + 1 and wy <= ground_height + 6:
+		if biome == 1:
+			var kelp_height: int = _kelp_height(wx, wz, seed)
+			if wy <= ground_height + kelp_height:
+				return BlockDatabase.BlockType.KELP
+
+	if wy > 60:
+		return BlockDatabase.BlockType.AIR
+
+	if wy >= 58:
+		var ice_noise: float = noise_detail.get_noise_2d(float(wx) * 0.5, float(wz) * 0.5)
+		if ice_noise > 0.6:
+			return BlockDatabase.BlockType.ICE
+		return BlockDatabase.BlockType.WATER
+
+	if wy > ground_height:
+		if is_wreck_center and biome == 3:
+			var rel_y: int = wy - ground_height - 1
+			if rel_y >= 0 and rel_y < 3:
+				var rel_x: int = (wx % 5 + 5) % 5
+				var rel_z: int = (wz % 3 + 3) % 3
+				if rel_x < 5 and rel_z < 3:
+					if rel_y == 0 or rel_y == 2 or rel_x == 0 or rel_x == 4 or rel_z == 0 or rel_z == 2:
+						return BlockDatabase.BlockType.WRECK_WOOD
+		return BlockDatabase.BlockType.WATER
+
+	return BlockDatabase.BlockType.WATER
+
+static func _surface_block(biome: int, wx: int, wz: int, noise_detail: FastNoiseLite) -> int:
+	match biome:
+		0:
+			return BlockDatabase.BlockType.SAND
+		1:
+			return BlockDatabase.BlockType.SAND
+		2:
+			return BlockDatabase.BlockType.ROCK
+		3:
+			return BlockDatabase.BlockType.SAND
+		_:
+			return BlockDatabase.BlockType.SAND
+
+static func _decoration_block(biome: int, wx: int, wz: int, noise_detail: FastNoiseLite, seed: int) -> int:
+	match biome:
+		0:
+			var coral_noise: float = noise_detail.get_noise_2d(float(wx + seed % 100), float(wz + seed % 100))
+			if coral_noise > 0.4:
+				if (wx + wz) % 2 == 0:
+					return BlockDatabase.BlockType.CORAL_RED
+				else:
+					return BlockDatabase.BlockType.CORAL_BLUE
+		_:
+			pass
+	return BlockDatabase.BlockType.WATER
+
+static func _kelp_height(wx: int, wz: int, seed: int) -> int:
+	var h: int = ((wx * 73856093) ^ (wz * 19349663) ^ seed) % 4
+	return 3 + h