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class_name Chunk
extends Node3D
var grid_position := Vector3i.ZERO
var mesh: ArrayMesh = ArrayMesh.new()
@export var noise: FastNoiseLite
@export var blocks: Array = []
func generate_block_data(row: int, column: int, depth: int, empty: bool = false):
Global.mutex.lock()
grid_position = Vector3i(row, column, depth)
blocks = []
for x in Global.CHUNK_SIZE.x:
blocks.append([])
for y in Global.CHUNK_SIZE.y:
blocks[x].append([])
for z in Global.CHUNK_SIZE.z:
var block_position = Vector3i(
grid_position.x * Global.CHUNK_SIZE.x + x,
grid_position.y * Global.CHUNK_SIZE.y + y,
grid_position.z * Global.CHUNK_SIZE.z + z
)# * 2
var value = noise.get_noise_3d(block_position.x, block_position.y, block_position.z) * 100
var type = Block.Type.AIR
if value > 4:
type = Block.Type.GRASS
if value < -4:
type = Block.Type.STONE
#if value < -16:
#type = Block.Type.DIRT
if value < -17 and value > -20:
type = Block.Type.SAND
if abs(value) > 21 and abs(value) < 21.25:
type = [Block.Type.STONE, Block.Type.YELLOW_STONE, Block.Type.BLUE_STONE, Block.Type.RED_STONE, Block.Type.BLACK_STONE].pick_random()
#print(value)
var block = Block.new()
block.position = block_position
block.type = type
if empty:
block.type = Block.Type.AIR
blocks[x][y].append(block)
Global.mutex.unlock()
func generate_mesh():
Global.mutex.lock()
var material := preload("res://new_shader_material.tres")
var st = SurfaceTool.new()
st.begin(Mesh.PRIMITIVE_TRIANGLES)
st.set_material(material)
for x in blocks.size():
for y in blocks[x].size():
for z in blocks[x][y].size():
var block: Block = blocks[x][y][z]
if block.type == Block.Type.AIR:
continue
var block_front: Block
if block_exists(x, y, z + 1):
block_front = blocks[x][y][z + 1]
elif is_chunk_border(x, y, z) and chunk_exists(grid_position + Vector3i(0, 0, 1)):
var chunk_front := Global.chunks[grid_position + Vector3i(0, 0, 1)]
block_front = chunk_front.blocks[x][y][0]
var block_back: Block
if block_exists(x, y, z - 1):
block_back = blocks[x][y][z - 1]
elif is_chunk_border(x, y, z) and chunk_exists(grid_position + Vector3i(0, 0, -1)):
var chunk_back := Global.chunks[grid_position + Vector3i(0, 0, -1)]
block_back = chunk_back.blocks[x][y][Global.CHUNK_SIZE.z - 1]
var block_right: Block
if block_exists(x + 1, y, z):
block_right = blocks[x + 1][y][z]
elif is_chunk_border(x, y, z) and chunk_exists(grid_position + Vector3i(1, 0, 0)):
var chunk_right := Global.chunks[grid_position + Vector3i(1, 0, 0)]
block_right = chunk_right.blocks[0][y][z]
var block_left: Block
if block_exists(x - 1, y, z):
block_left = blocks[x - 1][y][z]
elif is_chunk_border(x, y, z) and chunk_exists(grid_position + Vector3i(-1, 0, 0)):
var chunk_left := Global.chunks[grid_position + Vector3i(-1, 0, 0)]
block_left = chunk_left.blocks[Global.CHUNK_SIZE.x - 1][y][z]
var block_top: Block
if block_exists(x, y + 1, z):
block_top = blocks[x][y + 1][z]
elif is_chunk_border(x, y, z) and chunk_exists(grid_position + Vector3i(0, 1, 0)):
var chunk_top := Global.chunks[grid_position + Vector3i(0, 1, 0)]
#if chunk_top.is_inside_tree():
block_top = chunk_top.blocks[x][0][z]
var block_bottom: Block
if block_exists(x, y - 1, z):
block_bottom = blocks[x][y - 1][z]
elif is_chunk_border(x, y, z) and chunk_exists(grid_position + Vector3i(0, -1, 0)):
var chunk_bottom := Global.chunks[grid_position + Vector3i(0, -1, 0)]
#if chunk_bottom.is_inside_tree():
block_bottom = chunk_bottom.blocks[x][Global.CHUNK_SIZE.y - 1][z]
if not block.type == Block.Type.AIR:
if block.type == Block.Type.GRASS:
if block_top and block_top.type != Block.Type.AIR:
block.type = Block.Type.DIRT
var rng = RandomNumberGenerator.new()
rng.seed = randi()
st.set_color(Color(rng.randf(), rng.randf(), rng.randf()))
st.set_uv(Vector2(0, 0))
if not block_front or block_front.type == Block.Type.AIR:
block.add_face(st, Block.Face.FRONT)
if not block_back or block_back.type == Block.Type.AIR:
block.add_face(st, Block.Face.BACK)
if not block_right or block_right.type == Block.Type.AIR:
block.add_face(st, Block.Face.RIGHT)
if not block_left or block_left.type == Block.Type.AIR:
block.add_face(st, Block.Face.LEFT)
if not block_top or block_top.type == Block.Type.AIR:
block.add_face(st, Block.Face.TOP)
if not block_bottom or block_bottom.type == Block.Type.AIR:
block.add_face(st, Block.Face.BOTTOM)
#st.generate_normals()
mesh = st.commit()
Global.mutex.unlock()
func update_mesh() -> void:
$MeshInstance3D.mesh = mesh
var shape := ConcavePolygonShape3D.new()
var faces := mesh.get_faces()
if faces.size() > 0:
shape.set_faces(mesh.get_faces())
$StaticBody3D/CollisionShape3D.shape = shape
func add_to(node: Node) -> void:
node.add_child(self)
update_mesh()
func generate_chunk(row: int, column: int, depth: int):
if blocks.is_empty():
generate_block_data(row, column, depth)
generate_mesh()
func add_block(block_position: Vector3, block_type: Block.Type = Block.Type.GRASS) -> void:
var block = Block.new()
block.position = Vector3i(
grid_position.x * Global.CHUNK_SIZE.x + int(block_position.x),
grid_position.y * Global.CHUNK_SIZE.y + int(block_position.y),
grid_position.z * Global.CHUNK_SIZE.z + int(block_position.z)
)
block.type = block_type
blocks[block_position.x][block_position.y][block_position.z] = block
#generate_mesh.call_deferred()
func remove_block(block_position: Vector3) -> void:
blocks[block_position.x][block_position.y][block_position.z].type = Block.Type.AIR
static func chunk_exists(chunk_position: Vector3i):
return Global.chunks.has(chunk_position)
#return x >= 0 and chunks.size() - 1 >= x and y >= 0 and chunks[x].size() - 1 >= y and z >= 0 and chunks[x][y].size() - 1 >= z
func block_exists(x: int, y: int, z: int):
return x >= 0 and blocks.size() - 1 >= x and y >= 0 and blocks[x].size() - 1 >= y and z >= 0 and blocks[x][y].size() - 1 >= z
func is_chunk_border(x: int, y: int, z: int):
return x == 0 or x == Global.CHUNK_SIZE.x - 1 or y == 0 or y == Global.CHUNK_SIZE.y - 1 or z == 0 or z == Global.CHUNK_SIZE.z - 1
func get_bordering_chunks(block_position: Vector3i) -> Array[Vector3i]:
var bordering_chunks := [] as Array[Vector3i]
if not is_chunk_border(block_position.x, block_position.y, block_position.z):
return bordering_chunks
if block_position.z == 0:
bordering_chunks.append(grid_position + Vector3i(0, 0, -1))
elif block_position.z == Global.CHUNK_SIZE.z - 1:
bordering_chunks.append(grid_position + Vector3i(0, 0, 1))
if block_position.x == 0:
bordering_chunks.append(grid_position + Vector3i(-1, 0, 0))
elif block_position.x == Global.CHUNK_SIZE.x - 1:
bordering_chunks.append(grid_position + Vector3i(1, 0, 0))
if block_position.y == 0:
bordering_chunks.append(grid_position + Vector3i(0, -1, 0))
elif block_position.y == Global.CHUNK_SIZE.y - 1:
bordering_chunks.append(grid_position + Vector3i(0, 1, 0))
return bordering_chunks
func get_neighboring_blocks(_block_position: Vector3i) -> Array[Vector3i]:
return []
@warning_ignore("shadowed_variable_base_class")
static func global_to_chunk(global_position: Vector3, normal: Vector3) -> Vector3i:
return floor((global_position - normal * (Block.BLOCK_SIZE * 0.5)) / Vector3(Global.CHUNK_SIZE))
@warning_ignore("shadowed_variable_base_class")
static func global_to_chunk_block(global_position: Vector3, normal: Vector3) -> Vector3i:
return global_to_block(global_position, normal) - Global.CHUNK_SIZE * global_to_chunk(global_position, normal)
@warning_ignore("shadowed_variable_base_class")
static func global_to_block(global_position: Vector3, normal: Vector3) -> Vector3i:
return floor(global_position - normal * (Block.BLOCK_SIZE * 0.5))
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