extends Resource
class_name FieldRequirement


func is_satisfied_at_position(grid: Grid, pos: Vector2i) -> bool:
	match self.get_script():
		FieldMin:
			var req = self as FieldMin
			var value = grid.get_field_value_at(req.field, pos)
			var min = req.min
			return value >= min
		FieldMax:
			var req = self as FieldMax
			var value = grid.get_field_value_at(req.field, pos)
			var max = req.max
			return value <= max
		FieldRange:
			var req = self as FieldMax
			var value = grid.get_field_value_at(req.field, pos)
			var min = req.min
			var max = req.max
			return min <= value <= max
		FieldComparison:
			var req = self as FieldComparison
			var left = grid.get_field_value_at(req.field_left, pos)
			var right = grid.get_field_value_at(req.field_right, pos)
			match req.operation:
				FieldComparison.Operation.LessThan: left < right
				FieldComparison.Operation.GreaterThan: left > right
	assert(false, "Unknown Field Requirement!")
	return false
	
		
		
	#var current_field_value = grid.get_field_value_at(requirement.field, tile_pos)
	#if requirement.enforce_min && current_field_value < requirement.minimum: return false
	#if requirement.enforce_max && current_field_value > requirement.maximum: return false
		
	return true