first commit

demo/ai/tasks/back_away.gd

@@ -0,0 +1,39 @@
+#*
+#* back_away.gd
+#* =============================================================================
+#* Copyright (c) 2023-present Serhii Snitsaruk and the LimboAI contributors.
+#*
+#* Use of this source code is governed by an MIT-style
+#* license that can be found in the LICENSE file or at
+#* https://opensource.org/licenses/MIT.
+#* =============================================================================
+#*
+@tool
+extends BTAction
+## Moves the agent in the opposite direction of its current facing. [br]
+## Returns [code]RUNNING[/code] always.
+
+## Blackboard variable that stores desired speed.
+@export var speed_var: StringName = &"speed"
+
+## How much can we deviate from the "away" direction (in radians).
+@export var max_angle_deviation: float = 0.7
+
+var _dir: Vector2
+var _desired_velocity: Vector2
+
+
+# Called each time this task is entered.
+func _enter() -> void:
+	# Determine "away" direction and desired velocity
+	_dir = Vector2.LEFT * agent.get_facing()
+	var speed: float = blackboard.get_var(speed_var, 200.0)
+	var rand_angle = randf_range(-max_angle_deviation, max_angle_deviation)
+	_desired_velocity = _dir.rotated(rand_angle) * speed
+
+
+# Called each time this task is ticked (aka executed).
+func _tick(_delta: float) -> Status:
+	agent.move(_desired_velocity)
+	agent.face_dir(-signf(_dir.x))
+	return RUNNING