imprison_character_effect

imprison_character_effect = {
	$TARGET$ = { save_scope_as = imprisonment_target }
	$IMPRISONER$ = { save_scope_as = imprisoner }
	
	scope:imprisonment_target = {
		if = {
			limit = {
				has_opinion_modifier = {
					modifier = imprisoned_me_past
					target = scope:imprisoner
				}
			}
			hidden_effect = {
				remove_opinion = {
					target = scope:imprisoner
					modifier = imprisoned_me
				}
			}
		}
		#Close family get closer to rivalling you
		if = {
			limit = {
				is_close_family_of = $IMPRISONER$
				NOR = {
					has_trait = forgiving
					has_trait = craven
				}
			}
			progress_towards_rival_effect = {
				CHARACTER = scope:imprisoner
				REASON = rival_imprisoned_family
				OPINION = 0
			}
		}
		add_opinion = {
			target = scope:imprisoner
			modifier = imprisoned_me
		}
	}

	imprison_hostage_tooltip_effect = { WHO = scope:imprisonment_target }

	if = {
		limit = {
			scope:imprisoner = { is_landless_ruler = no }
			scope:imprisonment_target = {
				exists = liege
				OR = {
					is_playable_character = yes
					is_close_or_extended_family_of = liege
					is_spouse_of = liege
				}
			}
		}
		
		scope:imprisoner = {
			imprison = {
				target = scope:imprisonment_target
				type = house_arrest
			}
			scope:imprisonment_target = {
				if = {
					limit = {
						any_close_or_extended_family_member = {
							NOR = {
								is_close_family_of = scope:imprisoner
								scope:imprisoner = this
							}
						}
					}
					custom_tooltip = IMPRISONMENT_RELATIVES_EFFECT_HOUSE_ARREST
					hidden_effect = {
						every_close_or_extended_family_member = {
							limit = {
								NOR = {
									is_close_family_of = scope:imprisoner
									scope:imprisoner = this
								}
							}
							add_opinion = {
								modifier = imprisoned_family_member
								target = scope:imprisoner
							}
						}
					}
				}
			}
		}
	}
		
	else = {
		scope:imprisoner = {
			imprison = {
				target = scope:imprisonment_target
				type = dungeon
			}
			scope:imprisonment_target = {
				if = {
					limit = {
						any_close_or_extended_family_member = {
							NOR = {
								is_close_family_of = scope:imprisoner
								scope:imprisoner = this
							}
						}
					}
					custom_tooltip = IMPRISONMENT_RELATIVES_EFFECT_DUNGEON
					hidden_effect = {
						every_close_or_extended_family_member = {
							limit = {
								scope:imprisoner != this
							}
							add_opinion = {
								modifier = imprisoned_family_member_dungeon
								target = scope:imprisoner
							}
						}
					}
				}
			}

As written in game/common/scripted_effects/00_prison_effects.txt.