44 lines
713 B
GDScript3
44 lines
713 B
GDScript3
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extends Node
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class_name StateMachine
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var state = null setget set_state
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var prev_state = null
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var states = {}
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onready var parent = get_parent()
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func _physics_process(delta):
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if state != null:
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state_logic(delta)
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var new = get_next_state(delta)
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if new != null:
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set_state(new)
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func state_logic(delta):
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pass
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func get_next_state(delta):
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return null
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func enter_state(new_state, old_state):
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pass
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func exit_state(old_state, new_state):
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pass
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func set_state(new_state):
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prev_state = state
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state = new_state
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if prev_state != null:
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exit_state(prev_state, new_state)
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if new_state != null:
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enter_state(new_state, prev_state)
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func add_state(state_name):
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states[state_name] = states.size()
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