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62 lines
2.0 KiB
GDScript
62 lines
2.0 KiB
GDScript
2 years ago
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## Compares two values using the specified comparison operator.
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## Returns [code]FAILURE[/code] if any of the expression fails or the
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## comparison operation returns [code]false[/code], otherwise it returns [code]SUCCESS[/code].
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@tool
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class_name BlackboardCompareCondition extends ConditionLeaf
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enum Operators {
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EQUAL,
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NOT_EQUAL,
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GREATER,
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LESS,
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GREATER_EQUAL,
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LESS_EQUAL,
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}
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## Expression represetning left operand.
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## This value can be any valid GDScript expression.
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## In order to use the existing blackboard keys for comparison,
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## use get_value("key_name") e.g. get_value("direction").length()
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@export_placeholder(EXPRESSION_PLACEHOLDER) var left_operand: String = ""
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## Comparison operator.
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@export_enum("==", "!=", ">", "<", ">=", "<=") var operator: int = 0
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## Expression represetning right operand.
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## This value can be any valid GDScript expression.
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## In order to use the existing blackboard keys for comparison,
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## use get_value("key_name") e.g. get_value("direction").length()
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@export_placeholder(EXPRESSION_PLACEHOLDER) var right_operand: String = ""
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@onready var _left_expression: Expression = _parse_expression(left_operand)
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@onready var _right_expression: Expression = _parse_expression(right_operand)
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func tick(actor: Node, blackboard: Blackboard) -> int:
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var left: Variant = _left_expression.execute([], blackboard)
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if _left_expression.has_execute_failed():
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return FAILURE
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var right: Variant = _right_expression.execute([], blackboard)
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if _right_expression.has_execute_failed():
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return FAILURE
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var result: bool = false
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match operator:
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Operators.EQUAL: result = left == right
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Operators.NOT_EQUAL: result = left != right
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Operators.GREATER: result = left > right
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Operators.LESS: result = left < right
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Operators.GREATER_EQUAL: result = left >= right
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Operators.LESS_EQUAL: result = left <= right
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return SUCCESS if result else FAILURE
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func _get_expression_sources() -> Array[String]:
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return [left_operand, right_operand]
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