proper terrain generation

player/player.gd

@@ -1,7 +1,6 @@
 extends CharacterBody3D
 
-
+@export var SPEED:float = 30.0
-const SPEED = 5.0
 const JUMP_VELOCITY = 4.5
 
 
@@ -11,13 +10,14 @@ func _physics_process(delta: float) -> void:
 		velocity += get_gravity() * delta
 
 	# Handle jump.
-	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
+	if Input.is_action_just_pressed("jump") and is_on_floor():
 		velocity.y = JUMP_VELOCITY
 
 	# Get the input direction and handle the movement/deceleration.
 	# As good practice, you should replace UI actions with custom gameplay actions.
-	var input_dir := Input.get_vector("ui_left", "ui_right", "ui_up", "ui_down")
+	var input_dir := Input.get_vector("left", "right", "forward", "downard")
 	var direction := (transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
+
 	if direction:
 		velocity.x = direction.x * SPEED
 		velocity.z = direction.z * SPEED
@@ -25,4 +25,6 @@ func _physics_process(delta: float) -> void:
 		velocity.x = move_toward(velocity.x, 0, SPEED)
 		velocity.z = move_toward(velocity.z, 0, SPEED)
 
+	rotate_y(Input.get_axis("camera_right","camera_left")*0.1)
+	%Camera3D.rotate_x(Input.get_axis("camera_down","camera_up")*0.1)
 	move_and_slide()

world_gen/player.tscn

@@ -0,0 +1,22 @@
+[gd_scene load_steps=4 format=3 uid="uid://m3y8d8rf4wg8"]
+
+[ext_resource type="Script" uid="uid://b5io1eg4blrp5" path="res://player/player.gd" id="1_awywi"]
+
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_y7qka"]
+resource_name = "PlayerCollision"
+
+[sub_resource type="CapsuleMesh" id="CapsuleMesh_nwtrj"]
+resource_name = "PlayerMesh"
+
+[node name="Player" type="CharacterBody3D"]
+script = ExtResource("1_awywi")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+shape = SubResource("CapsuleShape3D_y7qka")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="CollisionShape3D"]
+mesh = SubResource("CapsuleMesh_nwtrj")
+
+[node name="Camera3D" type="Camera3D" parent="."]
+unique_name_in_owner = true
+transform = Transform3D(1, 0, 0, 0, 0.9604348, 0.27850503, 0, -0.27850503, 0.9604348, 0, 1.8589027, 2.8465767)

world_gen/terrain_noise.tres

@@ -0,0 +1,8 @@
+[gd_resource type="FastNoiseLite" format=3 uid="uid://dknkwbejk05gt"]
+
+[resource]
+noise_type = 4
+seed = -20
+frequency = 0.0034
+fractal_octaves = 3
+fractal_lacunarity = 1.985

world_gen/world_generator.gd

@@ -5,7 +5,7 @@ var generation_thread: Thread = Thread.new()
 @export_category("CHUNK GENERATION")
 
 const CHUNK_SIZE := 256
-const CHUNK_BOUNDS := 8
+const CHUNK_BOUNDS := 4
 
 ## How detailed the chunk should be. This could be made a const when debug phase is finished
 @export_range(4, 256, 4) var chunk_resolution := 32:
@@ -16,22 +16,19 @@ const CHUNK_BOUNDS := 8
 #### WORLD GENERATION ####
 @export_category("WORLD GENERATION")
 @export_tool_button("Generate Chunks") var generate_chunk_callable = generate.bind(true)
-@export var noise: FastNoiseLite:
+@export_tool_button("Delete Chunks") var delete_chunk_callable = delete.bind(true)
-	set(new_noise):
+@export var noise: FastNoiseLite
-		noise = new_noise
-		update_all_mesh()
-		if noise:
-			noise.changed.connect(update_all_mesh) #change all thes meshes after eahc changes
 @export_range(4.0, 128.0, 4.0) var height := 64.0:
 	set(new_height):
 		height = new_height
 		update_all_mesh()
 
-var loaded_chunks := {}
+var loaded_chunks := {}# Key: Vector2i, Value: MeshInstance3D
 
 
 # Called when the node enters the scene tree for the first time. ALSO IN EDITOR
 func _ready() -> void:
+		if !(Engine.is_editor_hint()):
 			generate(true)
 
 
@@ -40,35 +37,53 @@ func generate(_ForceRegen:bool=false):
 	generate_chunks_around(Vector3(0, 0, 0), _ForceRegen)
 
 
-# Called every frame. 'delta' is the elapsed time since the previous frame.
+func delete(_Force:bool = true):
-func _process(_delta: float) -> void:
+	loaded_chunks.clear()
-	pass
+	for c in get_children():
+		c.queue_free()
 
 
 func generate_noise(_seed: float):
 	noise = FastNoiseLite.new()
+	noise.noise_type = FastNoiseLite.TYPE_PERLIN
+	noise.seed = _seed
+	noise.frequency = 0.01
+
+	if Engine.is_editor_hint():
+		update_all_mesh()
 
 
-# This function is better called in another thread, doing all the heavy process before adding it to the scene tree
 func generate_chunk(position: Vector3, _ForceRegen: bool = false):
-
 	WorkerThreadPool.add_task(func():
 		var mesh_instance = MeshInstance3D.new()
-		update_mesh(mesh_instance)
+		update_mesh(mesh_instance, position)
 		mesh_instance.position = position
-		call_deferred("add_child", mesh_instance)
 		var chunk_coord = get_chunk_coord(position)
-		loaded_chunks[chunk_coord] = mesh_instance
+		call_deferred("add_chunk_deferred", mesh_instance, chunk_coord)
-		print("chunk at : ",str(position),", coord ",str(chunk_coord), " loaded")
 
 	)
 
 
+func add_chunk_deferred(mesh_instance: MeshInstance3D, chunk_coord: Vector2i):
+	add_child(mesh_instance)
+	if Engine.is_editor_hint():
+		mesh_instance.owner = get_tree().edited_scene_root
+
+	loaded_chunks[chunk_coord] = mesh_instance
+	print("Chunk at: ", str(mesh_instance.position), ", coord: ", str(chunk_coord), " loaded")
+
+
 func get_height(x: float, y: float) -> float:
+	if not noise:
+		return 0.0
+
 	return noise.get_noise_2d(x, y) * height
 
 
 func get_normal(x: float, y: float) -> Vector3:
+	if not noise:
+		return Vector3.UP
+
 	var epsilon := CHUNK_SIZE / chunk_resolution
 	var normal := Vector3(
 		(get_height(x + epsilon, y) - get_height(x - epsilon, y)) / (2.0 * epsilon),
@@ -79,13 +94,33 @@ func get_normal(x:float,y:float) -> Vector3:
 	return normal.normalized()
 
 
+func get_biome(x: float, z: float) -> String:
+	if not noise:
+		return "default"
+
+	var biome_noise = FastNoiseLite.new()
+	biome_noise.noise_type = FastNoiseLite.TYPE_CELLULAR
+	biome_noise.seed = noise.seed + 1
+	biome_noise.frequency = 0.005
+	var value = biome_noise.get_noise_2d(x, z)
+
+	if value < -0.3:
+		return "desert"
+	elif value < 0.1:
+		return "forest"
+	elif value < 0.4:
+		return "mountain"
+	else:
+		return "ocean"
+
+
 func update_all_mesh():
-	for chunk in loaded_chunks:
+	for chunk_coord in loaded_chunks:
-		update_mesh(loaded_chunks[chunk])
+		update_mesh(loaded_chunks[chunk_coord], loaded_chunks[chunk_coord].position)
 
 
-func update_mesh(chunk_terrain_instance:MeshInstance3D):
+func update_mesh(chunk_terrain_instance: MeshInstance3D, chunk_pos: Vector3):
-	var plane: PlaneMesh = PlaneMesh.new() #load("res://world_gen/new_plane_mesh.tres").duplicate()
+	var plane: PlaneMesh = load("res://world_gen/new_plane_mesh.tres").duplicate()
 	plane.subdivide_depth = chunk_resolution
 	plane.subdivide_width = chunk_resolution
 	plane.size = Vector2(CHUNK_SIZE, CHUNK_SIZE)
@@ -97,9 +132,8 @@ func update_mesh(chunk_terrain_instance:MeshInstance3D):
 
 	for i: int in vertex_array.size():
 		var vertex := vertex_array[i]
-		# Convert local vertex coordinates to world coordinates
+		var world_x = chunk_pos.x + vertex.x
-		var world_x = chunk_terrain_instance.position.x + vertex.x
+		var world_z = chunk_pos.z + vertex.z
-		var world_z = chunk_terrain_instance.position.z + vertex.z
 		var normal := Vector3.UP
 		var tangent := Vector3.RIGHT
 
@@ -115,9 +149,36 @@ func update_mesh(chunk_terrain_instance:MeshInstance3D):
 		tangent_array[4 * i + 2] = tangent.z
 		tangent_array[4 * i + 3] = 1.0
 
+	plane_arrays[ArrayMesh.ARRAY_VERTEX] = vertex_array
+	plane_arrays[ArrayMesh.ARRAY_NORMAL] = normal_array
+	plane_arrays[ArrayMesh.ARRAY_TANGENT] = tangent_array
+
 	var array_mesh := ArrayMesh.new()
 	array_mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, plane_arrays)
+	#array_mesh.surface_set_material(0, get_biome_mat(chunk_pos))
 	chunk_terrain_instance.mesh = array_mesh
+	chunk_terrain_instance.create_trimesh_collision()
+
+
+func get_biome_mat(chunk_pos) -> Material:
+	# Apply biome-based material
+	var material = StandardMaterial3D.new()
+	var biome = get_biome(chunk_pos.x + CHUNK_SIZE / 2.0, chunk_pos.z + CHUNK_SIZE / 2.0)
+
+	match biome:
+		"desert":
+			material.albedo_color = Color(1.0, 0.8, 0.4)
+
+		"forest":
+			material.albedo_color = Color(0.2, 0.6, 0.2)
+
+		"mountain":
+			material.albedo_color = Color(0.5, 0.5, 0.5)
+
+		"ocean":
+			material.albedo_color = Color(0.0, 0.4, 0.8)
+
+	return material
 
 
 ## Convert position to chunk coordinates
@@ -128,22 +189,31 @@ func get_chunk_coord(position:Vector3) -> Vector2i:
 
 
 func generate_chunks_around(position: Vector3, ForceRegen: bool = false):
-
 	# Convert position to chunk coordinates
 	var position_to_coord := get_chunk_coord(position)
-
+	print("Closest chunk: ", str(position_to_coord))
-	print("closest chunk : "+str(Vector2i(position_to_coord.x,position_to_coord.y)))
+	var new_chunks := {}
 
 	for x in range(position_to_coord.x - CHUNK_BOUNDS, position_to_coord.x + CHUNK_BOUNDS + 1):
 		for z in range(position_to_coord.y - CHUNK_BOUNDS, position_to_coord.y + CHUNK_BOUNDS + 1):
 			var chunk_coord := Vector2i(x, z)
-			var chunck_position := Vector3i(x * CHUNK_SIZE,0,z * CHUNK_SIZE)
+			var chunk_position := Vector3(x * CHUNK_SIZE, 0, z * CHUNK_SIZE)
-			print("trying to load chunk at coordinate : "+str(chunk_coord))
+			print("Trying to load chunk at coordinate: ", chunk_coord)
-			if ForceRegen:
+
-				loaded_chunks.clear()
+			if ForceRegen and loaded_chunks.has(chunk_coord):
-				for child in get_children():
+				loaded_chunks[chunk_coord].queue_free()
-					child.queue_free()
+				loaded_chunks.erase(chunk_coord)
 
 			if not loaded_chunks.has(chunk_coord):
-				print("generate chunk at : "+str(chunck_position))
+				generate_chunk(chunk_position, ForceRegen)
-				generate_chunk(chunck_position)
+				new_chunks[chunk_coord] = null # Placeholder until chunk is added
+			else:
+				new_chunks[chunk_coord] = loaded_chunks[chunk_coord]
+
+	# Unload chunks outside bounds
+	for chunk_coord in loaded_chunks:
+		if not new_chunks.has(chunk_coord):
+			loaded_chunks[chunk_coord].queue_free()
+			loaded_chunks.erase(chunk_coord)
+
+	loaded_chunks = new_chunks