création d'une class chunk

project.godot

@@ -19,6 +19,11 @@ _global_script_classes=[ {
 "language": "GDScript",
 "path": "res://utils/camera/outline.gd"
 }, {
+"base": "Spatial",
+"class": "Chunk",
+"language": "GDScript",
+"path": "res://world/chunk.gd"
+}, {
 "base": "Reference",
 "class": "Delaunator",
 "language": "GDScript",
@@ -42,6 +47,7 @@ _global_script_classes=[ {
 _global_script_class_icons={
 "CameraController": "",
 "CameraOutline": "",
+"Chunk": "",
 "Delaunator": "",
 "PoissonDiscSampling": "",
 "Terrain": "",

utils/terrain/Terrain.gd

@@ -850,3 +850,8 @@ func get_voronoi_cells_as_polygon():
 		list_polygon.append(center.polygon())
 	return(list_polygon)
 			
+func get_chunk(vect):
+	var centers = []
+	for idx in _data["find_point"][int(vect[0] / 64.0) * 32 + int(vect[1] / 64.0)]:
+		centers.append(get_center(idx))
+	return centers

utils/world_generation/WorldGeneration.gd

@@ -44,8 +44,9 @@ func _init():
 		Global.terrain.save()
 		
 	if Global.terrain.is_created() or Global.terrain.is_loaded():
+		pass
 		# create_map()
-		Global.terrain.set_data("mesh", create_mesh())
+		# Global.terrain.set_data("mesh", create_mesh())
 		# add_trees()
 		# get_tree().change_scene("res://world/game.tscn")
 	else:

world/World3d.gd

@@ -1,11 +1,17 @@
 extends Spatial
 
 var rng = RandomNumberGenerator.new()
+var chunk_size = 16
+var chunk_amount = 16
+var chunks = {}
+var unready_chunks = {}
+var thread
 
 func _ready():
-	var mi = Global.terrain.get_data("mesh")
-	add_child(mi)
-	add_trees()
+	# var mi = Global.terrain.get_data("mesh")
+	# add_child(mi)
+	# add_trees()
+	thread = Thread.new()
 
 func add_trees():
 	rng.randomize()
@@ -25,3 +31,67 @@ func add_trees():
 					tree.rotate_y(rng.randi_range(0, 2*PI))
 					tree.translation = Vector3(point.x, center.get_elevation() * 120, point.y)
 					add_child(tree)
+
+
+func add_chunk(x, z):
+	var key = str(x) + "," + str(z)
+	if chunks.has(key) or unready_chunks.has(key):
+		return
+		
+	if not thread.is_active():
+		thread.start(self, "load_chunk", [thread, x, z])
+		unready_chunks[key] = 1
+
+func load_chunk(array):
+	var thread = array[0]
+	var x = array[1]
+	var z = array[2]
+	
+	var chunk = Chunk.new(x * chunk_size, z * chunk_size)
+		
+	chunk.translation = Vector3(x * chunk_size, 0, z * chunk_size)
+	
+	call_deferred("load_done", chunk, thread)
+	
+func load_done(chunk, thread):
+	add_child(chunk)
+	var key = str(chunk.x / chunk_size) + "," + str(chunk.z / chunk_size)
+	chunks[key] = chunk
+	unready_chunks.erase(key)
+	thread.wait_to_finish()
+	
+func get_chunk(x, z):
+	var key = str(x) + "," + str(z)
+	if chunks.has(key):
+		return chunks.get(key)
+		
+	return null
+	
+func _process(delta):
+	update_chunks()
+	clean_up_chunks()
+	reset_chunks()
+
+func update_chunks():
+	var camera_translation = $CamBase/Camera.translation
+#	print(camera_translation)
+	var c_x = int(camera_translation.x) / chunk_size
+	var c_z = int(camera_translation.z) / chunk_size
+	
+	for x in range(c_x - chunk_amount * 0.5, c_x + chunk_amount * 0.53):
+		for z in range(c_z - chunk_amount * 0.5, c_z + chunk_amount * 0.53):
+			add_chunk(x, z)
+			var chunk = get_chunk(x, z)
+			if chunk != null:
+				chunk.should_remove = false
+	
+func clean_up_chunks():
+	for key in chunks:
+		var chunk = chunks[key]
+		if chunk.should_remove:
+			chunk.queue_free()
+			chunks.erase(key)
+	
+func reset_chunks():
+	for key in chunks:
+		chunks[key].should_remove = true

world/chunk.gd

@@ -0,0 +1,71 @@
+extends Spatial
+class_name Chunk
+
+var noise
+var should_remove = true
+var x
+var z
+
+func _init(x, z):
+	self.x = x
+	self.z = z
+
+func _ready():
+	generate_chunk()
+	
+func generate_chunk():
+	var file = File.new()
+	file.open("res://world/materials/materials.json", File.READ)
+	var materials = JSON.parse(file.get_as_text()).result
+
+	var st = SurfaceTool.new()
+
+	st.begin(Mesh.PRIMITIVE_TRIANGLES)
+	var factor = Vector3(1, 120, 1)
+	for center in Global.terrain.get_chunk(Vector2(x, z)):
+		if not center.get_data("water"):
+			var material_id = materials[center.get_data("material")]
+			var top_uv = Vector2(0, float(material_id) / (materials.size()-1))
+			var border_uv = Vector2(1, float(material_id) / (materials.size()-1))
+
+			for edge in center.borders():
+				if edge.end_center().get_elevation() < edge.start_center().get_elevation():
+					var top = edge.start_center().get_elevation()
+					# if edge.start_center().get_data("ocean"):
+						# top = -1.0
+					var bottom = edge.end_center().get_elevation()
+					if edge.end_center().get_data("ocean"):
+						bottom = 0.0
+					st.add_uv(border_uv)
+					st.add_vertex(Vector3(edge.start_corner().point3d().x, bottom, edge.start_corner().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.end_corner().point3d().x, top, edge.end_corner().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.start_corner().point3d().x, top, edge.start_corner().point3d().z) * factor)
+					
+					st.add_vertex(Vector3(edge.start_corner().point3d().x, bottom, edge.start_corner().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.end_corner().point3d().x, bottom, edge.end_corner().point3d().z) * factor)
+					st.add_vertex(Vector3(edge.end_corner().point3d().x, top, edge.end_corner().point3d().z) * factor)
+
+			for corner_count in center.corners().size():
+				var current_corner = center.corners()[corner_count]
+				var next_corner
+				if corner_count < center.corners().size() - 1:
+					next_corner = center.corners()[corner_count+1]
+				else:
+					next_corner = center.corners()[0]
+
+				st.add_uv(Vector2(top_uv))
+				st.add_vertex(Vector3(current_corner.point2d().x, center.get_elevation(), current_corner.point2d().y) * factor)
+				st.add_vertex(Vector3(next_corner.point2d().x, center.get_elevation(), next_corner.point2d().y) * factor)
+				st.add_vertex(Vector3(center.point2d().x, center.get_elevation(), center.point2d().y) * factor)
+		Global.loading.increment_step()
+
+	st.generate_normals()
+	st.index()
+
+	var mi = MeshInstance.new()
+	mi.mesh = st.commit()
+	var material = load("res://world/materials/world.material")
+	mi.set_surface_material(0, material)
+	mi.create_trimesh_collision()
+	mi.cast_shadow = GeometryInstance.SHADOW_CASTING_SETTING_ON
+	add_child(mi)