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https://github.com/tonytins/citylimits
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Removed state machine for behavior trees
- Added Font Awesome Support
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Tony Bark
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161 changed files with 7082 additions and 1083 deletions
12
examples/blackboard_sharing/README.MD
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12
examples/blackboard_sharing/README.MD
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# 🗣️ Sharing blackboard : the talking game !
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This example demonstrates how to share a single blackboard in multiple behavior trees.
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Sharing a blackboard can be necessary if you want to easily share data between trees, for example, to synchronize multiple NPCs.
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The blackboard can be instantiate in a Scene Tree via the editor, or in a script (as in this example).
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## Technical elements
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- `main.tscn` : scene to run. The main scene instantiates a unique blackboard and give it to all player trees,
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- `player.tscn` : a player in the talking game. They all share the same blackboard to known who is the next to talk.
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42
examples/blackboard_sharing/main.gd
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examples/blackboard_sharing/main.gd
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extends Node2D
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#------------------------------------------
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# Signaux
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#------------------------------------------
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#------------------------------------------
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# Exports
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#------------------------------------------
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#------------------------------------------
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# Variables publiques
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#------------------------------------------
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#------------------------------------------
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# Variables privées
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#------------------------------------------
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var _shared_blackboard:BTBlackboard
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#------------------------------------------
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# Fonctions Godot redéfinies
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#------------------------------------------
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func _ready() -> void:
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_shared_blackboard = BTBlackboard.new()
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_shared_blackboard.set_data("next_talking", "Alice")
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_shared_blackboard.set_data("players", [])
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$"PlayerAlice/BTRoot/".blackboard = _shared_blackboard
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$"PlayerBob/BTRoot/".blackboard = _shared_blackboard
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$"PlayerCharles/BTRoot/".blackboard = _shared_blackboard
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$"PlayerEmily/BTRoot/".blackboard = _shared_blackboard
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#------------------------------------------
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# Fonctions publiques
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#------------------------------------------
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#------------------------------------------
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# Fonctions privées
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#------------------------------------------
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23
examples/blackboard_sharing/main.tscn
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examples/blackboard_sharing/main.tscn
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[gd_scene load_steps=3 format=3 uid="uid://d1s5iyoblr4cm"]
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[ext_resource type="Script" path="res://examples/blackboard_sharing/main.gd" id="1_g7q7h"]
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[ext_resource type="PackedScene" uid="uid://7k8r0e84lcr3" path="res://examples/blackboard_sharing/player.tscn" id="2_y55mt"]
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[node name="World" type="Node2D"]
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script = ExtResource("1_g7q7h")
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[node name="PlayerAlice" parent="." instance=ExtResource("2_y55mt")]
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position = Vector2(509, 181)
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player_name = "Alice"
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[node name="PlayerBob" parent="." instance=ExtResource("2_y55mt")]
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position = Vector2(515, 477)
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player_name = "Bob"
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[node name="PlayerCharles" parent="." instance=ExtResource("2_y55mt")]
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position = Vector2(309, 324)
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player_name = "Charles"
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[node name="PlayerEmily" parent="." instance=ExtResource("2_y55mt")]
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position = Vector2(733, 322)
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player_name = "Emily"
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63
examples/blackboard_sharing/player.gd
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examples/blackboard_sharing/player.gd
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extends Node2D
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#------------------------------------------
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# Signaux
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#------------------------------------------
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#------------------------------------------
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# Exports
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#------------------------------------------
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@export var player_name:String = "":
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set(value):
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player_name = value
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if _name_label:
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_name_label.text = player_name
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#------------------------------------------
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# Variables publiques
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#------------------------------------------
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#------------------------------------------
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# Variables privées
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#------------------------------------------
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@onready var _text_label:Label = $GUI/Text
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@onready var _name_label:Label = $GUI/Name
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#------------------------------------------
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# Fonctions Godot redéfinies
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#------------------------------------------
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func _ready() -> void:
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_name_label.text = player_name
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#------------------------------------------
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# Fonctions publiques
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#------------------------------------------
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func declare_presence(blackboard:BTBlackboard) -> int:
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blackboard.get_data("players").append(player_name)
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return BTTickResult.SUCCESS
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func is_my_turn_to_talk(next_talking:String) -> bool:
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return player_name == next_talking
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func talk() -> int:
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_text_label.visible = true
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get_tree().create_timer(1).timeout.connect(func():_text_label.visible = false)
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return BTTickResult.SUCCESS
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func choose_next_player_talking(blackboard:BTBlackboard) -> int:
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blackboard.set_data("next_talking", _pick_next_player(blackboard.get_data("players")))
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return BTTickResult.SUCCESS
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#------------------------------------------
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# Fonctions privées
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#------------------------------------------
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func _pick_next_player(players:Array) -> String:
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var result:String = players.pick_random()
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while result == player_name:
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result = players.pick_random()
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return result
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123
examples/blackboard_sharing/player.tscn
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123
examples/blackboard_sharing/player.tscn
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[gd_scene load_steps=11 format=3 uid="uid://7k8r0e84lcr3"]
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[ext_resource type="Script" path="res://examples/blackboard_sharing/player.gd" id="1_1ti0g"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/BTRoot.gd" id="2_sdd0w"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Composite/BTSelector.gd" id="3_2v3m1"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Composite/BTSequence.gd" id="4_fjw5l"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Decorators/BTSuccess.gd" id="4_qnbqx"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Leaves/BTConditionCallable.gd" id="5_8tfvp"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Decorators/BTLimiter.gd" id="5_d3jao"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Leaves/BTActionCallable.gd" id="6_i6lan"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Leaves/BTActionWait.gd" id="10_1e6f0"]
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[ext_resource type="Script" path="res://addons/yet_another_behavior_tree/src/Nodes/Decorators/BTInverter.gd" id="11_fvy66"]
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[node name="Player" type="Node2D"]
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script = ExtResource("1_1ti0g")
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[node name="Shape" type="Node2D" parent="."]
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[node name="Ahahahah" type="Polygon2D" parent="Shape"]
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color = Color(0.188235, 0.490196, 0.505882, 1)
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polygon = PackedVector2Array(-27, -55, 22, -55, 22, -25, 10, -18, 24, 17, -30, 17, -30, 17, -30, 17, -13, -18, -13, -18, -13, -18, -27, -26, -27, -26, -27, -26)
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[node name="GUI" type="Control" parent="."]
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layout_mode = 3
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anchors_preset = 0
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offset_left = -61.0
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offset_top = -84.0
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offset_right = 61.0
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offset_bottom = -58.0
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[node name="Text" type="Label" parent="GUI"]
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visible = false
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layout_mode = 1
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anchors_preset = 15
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anchor_right = 1.0
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anchor_bottom = 1.0
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grow_horizontal = 2
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grow_vertical = 2
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text = "My turn !"
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horizontal_alignment = 1
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vertical_alignment = 1
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[node name="Name" type="Label" parent="GUI"]
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layout_mode = 0
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offset_left = 24.0
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offset_top = 104.0
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offset_right = 98.0
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offset_bottom = 127.0
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horizontal_alignment = 1
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vertical_alignment = 1
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[node name="BTRoot" type="Node" parent="."]
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script = ExtResource("2_sdd0w")
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actor_path = NodePath("..")
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[node name="Do" type="Node" parent="BTRoot"]
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script = ExtResource("4_fjw5l")
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[node name="Init" type="Node" parent="BTRoot/Do"]
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script = ExtResource("4_fjw5l")
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save_progression = true
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[node name="Declare I am playing" type="Node" parent="BTRoot/Do/Init"]
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script = ExtResource("4_qnbqx")
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[node name="Do once" type="Node" parent="BTRoot/Do/Init/Declare I am playing"]
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script = ExtResource("5_d3jao")
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[node name="I\'m here !" type="Node" parent="BTRoot/Do/Init/Declare I am playing/Do once"]
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script = ExtResource("6_i6lan")
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method_owner_path = NodePath("../../../../../..")
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method_name = "declare_presence"
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method_arguments = Array[String](["blackboard"])
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[node name="Invert" type="Node" parent="BTRoot/Do/Init"]
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script = ExtResource("11_fvy66")
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[node name="Do once" type="Node" parent="BTRoot/Do/Init/Invert"]
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script = ExtResource("5_d3jao")
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[node name="Wait 1s" type="Node" parent="BTRoot/Do/Init/Invert/Do once"]
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script = ExtResource("10_1e6f0")
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[node name="One Between" type="Node" parent="BTRoot/Do"]
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script = ExtResource("3_2v3m1")
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save_progression = true
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[node name="I must talk" type="Node" parent="BTRoot/Do/One Between"]
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script = ExtResource("4_fjw5l")
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save_progression = true
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[node name="Is my Turn ?" type="Node" parent="BTRoot/Do/One Between/I must talk"]
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script = ExtResource("5_8tfvp")
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method_owner_path = NodePath("../../../../..")
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method_name = "is_my_turn_to_talk"
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method_arguments = Array[String](["blackboard.get_data(\"next_talking\")"])
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[node name="Talk" type="Node" parent="BTRoot/Do/One Between/I must talk"]
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script = ExtResource("6_i6lan")
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method_owner_path = NodePath("../../../../..")
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method_name = "talk"
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[node name="Wait a little bit" type="Node" parent="BTRoot/Do/One Between/I must talk"]
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script = ExtResource("10_1e6f0")
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random_deviation_ms = 300
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[node name="Set Next Player To Talk" type="Node" parent="BTRoot/Do/One Between/I must talk"]
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script = ExtResource("6_i6lan")
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method_owner_path = NodePath("../../../../..")
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method_name = "choose_next_player_talking"
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method_arguments = Array[String](["blackboard"])
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[node name="I must listen" type="Node" parent="BTRoot/Do/One Between"]
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script = ExtResource("4_fjw5l")
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[node name="Not my turn" type="Node" parent="BTRoot/Do/One Between/I must listen"]
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script = ExtResource("11_fvy66")
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[node name="Is my Turn ?" type="Node" parent="BTRoot/Do/One Between/I must listen/Not my turn"]
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script = ExtResource("5_8tfvp")
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method_owner_path = NodePath("../../../../../..")
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method_name = "is_my_turn_to_talk"
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method_arguments = Array[String](["blackboard.get_data(\"next_talking\")"])
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