Behavior Tree addon

addons/beehave/nodes/composites/composite.gd

@@ -0,0 +1,8 @@
+extends BeehaveNode
+
+class_name Composite, "../../icons/category_composite.svg"
+
+
+func _ready():
+	if self.get_child_count() < 1:
+		push_error("BehaviorTree Error: Composite %s should have at least one child (NodePath: %s)" % [self.name, self.get_path()])

addons/beehave/nodes/composites/selector.gd

@@ -0,0 +1,18 @@
+extends Composite
+
+class_name SelectorComposite, "../../icons/selector.svg"
+
+func tick(actor, blackboard):
+	for c in get_children():
+		var response = c.tick(actor, blackboard)
+
+		if c is ConditionLeaf:
+			blackboard.set("last_condition", c)
+			blackboard.set("last_condition_status", response)
+
+		if response != FAILURE:
+			if c is ActionLeaf and response == RUNNING:
+				blackboard.set("running_action", c)
+			return response
+
+	return FAILURE

addons/beehave/nodes/composites/selector_star.gd

@@ -0,0 +1,33 @@
+# Special implementation of a selector that will
+# "wait" for running nodes and will not re-attempt
+# to execute previous nodes until that node is either
+# FAILED or SUCCEEDED
+extends Composite
+
+class_name SelectorStarComposite, "../../icons/selector_star.svg"
+
+
+var last_execution_index = 0
+
+func tick(actor, blackboard):
+	for c in get_children():
+		if c.get_index() < last_execution_index:
+			continue
+
+		var response = c.tick(actor, blackboard)
+
+		if c is ConditionLeaf:
+			blackboard.set("last_condition", c)
+			blackboard.set("last_condition_status", response)
+
+		if response != FAILURE:
+			if c is ActionLeaf and response == RUNNING:
+				blackboard.set("running_action", c)
+			if response == SUCCESS:
+				last_execution_index = 0
+			return response
+		else:
+			last_execution_index += 1
+
+	last_execution_index = 0
+	return FAILURE

addons/beehave/nodes/composites/sequence.gd

@@ -0,0 +1,18 @@
+extends Composite
+
+class_name SequenceComposite, "../../icons/sequencer.svg"
+
+func tick(actor, blackboard):
+	for c in get_children():
+		var response = c.tick(actor, blackboard)
+
+		if c is ConditionLeaf:
+			blackboard.set("last_condition", c)
+			blackboard.set("last_condition_status", response)
+
+		if response != SUCCESS:
+			if c is ActionLeaf and response == RUNNING:
+				blackboard.set("running_action", c)
+			return response
+
+	return SUCCESS

addons/beehave/nodes/composites/sequence_star.gd

@@ -0,0 +1,35 @@
+# Special implementation of sequencer who will execute
+# successful nodes only once until all nodes were successful
+
+extends Composite
+
+class_name SequenceStarComposite, "../../icons/sequencer_star.svg"
+
+var successful_index = 0
+
+func tick(actor, blackboard):
+	for c in get_children():
+		if c.get_index() < successful_index:
+			continue
+
+		var response = c.tick(actor, blackboard)
+
+		if c is ConditionLeaf:
+			blackboard.set("last_condition", c)
+			blackboard.set("last_condition_status", response)
+
+		if response != SUCCESS:
+			if response == FAILURE:
+				successful_index = 0
+			if c is ActionLeaf and response == RUNNING:
+				blackboard.set("running_action", c)
+			return response
+		else:
+			successful_index += 1
+
+	if successful_index == get_child_count():
+		successful_index = 0
+		return SUCCESS
+	else:
+		successful_index = 0
+		return FAILURE