utils.cfg

#textdomain wesnoth
# This file contains general utility macros for WML authors.
#
# Later macros in this file are built using earlier ones, which
# is why they live here rather than being broken out into topic-specific files.

# ! in comments is used in generating HTML documentation, ignore it otherwise.
#define QUANTITY NAME EASY_VALUE NORMAL_VALUE HARD_VALUE
    # Macro to define a 'quantity' differently based on difficulty levels.
#ifdef EASY
    {NAME}={EASY_VALUE}
#endif
#ifdef NORMAL
    {NAME}={NORMAL_VALUE}
#endif
#ifdef HARD
    {NAME}={HARD_VALUE}
#endif
#enddef

#define QUANTITY4 NAME EASY_VALUE NORMAL_VALUE HARD_VALUE NIGHTMARE_VALUE
    # Four-difficulty version of QUANTITY
#ifdef EASY
    {NAME}={EASY_VALUE}
#endif

#ifdef NORMAL
    {NAME}={NORMAL_VALUE}
#endif

#ifdef HARD
    {NAME}={HARD_VALUE}
#endif

#ifdef NIGHTMARE
    {NAME}={NIGHTMARE_VALUE}
#endif
#enddef

# No tab or space-based indentation for these macros to avoid trouble when these macros are used
# in the middle of a quoted string literal
#
# wmlindent: start ignoring
# wmlscope: start conditionals
#ifdef EASY
#define ON_DIFFICULTY EASY_VALUE NORMAL_VALUE HARD_VALUE
{EASY_VALUE}#enddef
#endif
#ifdef NORMAL
#define ON_DIFFICULTY EASY_VALUE NORMAL_VALUE HARD_VALUE
{NORMAL_VALUE}#enddef
#endif
#ifdef HARD
#define ON_DIFFICULTY EASY_VALUE NORMAL_VALUE HARD_VALUE
{HARD_VALUE}#enddef
#endif
# wmlscope: stop conditionals
# wmlindent: stop ignoring
# wmlscope: prune ON_DIFFICULTY

# No tab or space-based indentation for these macros to avoid trouble when these macros are used
# in the middle of a quoted string literal
#
# wmlindent: start ignoring
# wmlscope: start conditionals
#ifdef EASY
#define ON_DIFFICULTY4 EASY_VALUE NORMAL_VALUE HARD_VALUE NIGHTMARE_VALUE
{EASY_VALUE}#enddef
#endif
#ifdef NORMAL
#define ON_DIFFICULTY4 EASY_VALUE NORMAL_VALUE HARD_VALUE NIGHTMARE_VALUE
{NORMAL_VALUE}#enddef
#endif
#ifdef HARD
#define ON_DIFFICULTY4 EASY_VALUE NORMAL_VALUE HARD_VALUE NIGHTMARE_VALUE
{HARD_VALUE}#enddef
#endif
#ifdef NIGHTMARE
#define ON_DIFFICULTY4 EASY_VALUE NORMAL_VALUE HARD_VALUE NIGHTMARE_VALUE
{NIGHTMARE_VALUE}#enddef
#endif
# wmlscope: stop conditionals
# wmlindent: stop ignoring
# wmlscope: prune ON_DIFFICULTY4

#define TURNS EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT
    # Macro to define number of turns for different difficulty levels.
    {QUANTITY turns {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT}}
#enddef

#define TURNS4 EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT NIGHTMARE_AMOUNT
    # Four-difficulty version of TURNS
    {QUANTITY4 turns {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT} {NIGHTMARE_AMOUNT}}
#enddef

#define GOLD EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT
    # Macro which will let you say {GOLD x y z} to set
    # starting gold depending on easy/medium/hard - x/y/z
    {QUANTITY gold {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT}}
#enddef

#define GOLD4 EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT NIGHTMARE_AMOUNT
    # Four-difficulty version of GOLD
    {QUANTITY4 gold {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT} {NIGHTMARE_AMOUNT}}
#enddef

#define INCOME EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT
    # Macro which will let you say {INCOME x y z} to set
    # per-turn income depending on easy/medium/hard - x/y/z
    {QUANTITY income {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT}}
#enddef

#define INCOME4 EASY_AMOUNT NORMAL_AMOUNT HARD_AMOUNT NIGHTMARE_AMOUNT
    # Four-difficulty version of INCOME
    {QUANTITY4 income {EASY_AMOUNT} {NORMAL_AMOUNT} {HARD_AMOUNT} {NIGHTMARE_AMOUNT}}
#enddef

#define NO_INCOME
    # Used to specify when a side should not have any income
    # every turn.
    income=-2
#enddef

#define ATTACK_DEPTH EASY_VALUE NORMAL_VALUE HARD_VALUE
    # Macro to define AI attack depth for different difficulty levels
    # (set it to 1-6)
    {QUANTITY attack_depth {EASY_VALUE} {NORMAL_VALUE} {HARD_VALUE}}
#enddef

#define ATTACK_DEPTH4 EASY_VALUE NORMAL_VALUE HARD_VALUE NIGHTMARE_VALUE
    # Four-difficulty version of ATTACK_DEPTH
    {QUANTITY4 attack_depth {EASY_VALUE} {NORMAL_VALUE} {HARD_VALUE} {NIGHTMARE_VALUE}}
#enddef

#define NO_SCOUTS
    # Macro to make an AI team not recruit scouts.
    villages_per_scout=0
#enddef

#define RANDOM THING_VALUE
    # Macro to quickly pick a random value (in the $random variable, to avoid
    # cluttering up savegames with such temporary variables).
    [set_variable]
        name=random
        rand={THING_VALUE}
    [/set_variable]
#enddef

#define VARIABLE VAR VALUE
    # Macro to initialize a variable.  Strictly a syntatic shortcut.
    [set_variable]
        name={VAR}
        value={VALUE}
    [/set_variable]
#enddef

#define GLOBAL_VARIABLE NAMESPACE LOCAL_VAR_NAME GLOBAL_VAR_NAME SIDE
    #Assigns a persistent variable with the contents of a standard variable.
    [set_global_variable]
        namespace={NAMESPACE}
        from_local={LOCAL_VAR_NAME}
        to_global={GLOBAL_VAR_NAME}
        side={SIDE}
    [/set_global_variable]
#enddef

#define VARIABLE_FROM_GLOBAL NAMESPACE GLOBAL_VAR_NAME LOCAL_VAR_NAME SIDE
    #Retrieves the contents of a persistent variable and stores them in a standard variable.
    [get_global_variable]
        namespace={NAMESPACE}
        from_global={GLOBAL_VAR_NAME}
        to_local={LOCAL_VAR_NAME}
        side={SIDE}
        #immediate=no
    [/get_global_variable]
#enddef

#define VARIABLE_OP VAR OP_NAME VALUE
    # Macro to do mathematical operations on variables.
    [set_variable]
        name={VAR}
        {OP_NAME}={VALUE}
    [/set_variable]
#enddef

#define VARIABLE_CONDITIONAL VAR OP_NAME VALUE
    # Macro to do conditional operations on variables.
    [variable]
        name={VAR}
        {OP_NAME}={VALUE}
    [/variable]
#enddef

#define CLEAR_VARIABLE VAR_NAME
    # Macro to clear a variable previously set.
    [clear_variable]
        name={VAR_NAME}
    [/clear_variable]
#enddef

#define CLEAR_GLOBAL_VARIABLE NAMESPACE MY_VARIABLE_NAME SIDE
    # Clears a persistent variable entirely.
    [clear_global_variable]
        namespace={NAMESPACE}
        global={MY_VARIABLE_NAME}
        side={SIDE}
        immediate=no
    [/clear_global_variable]
#enddef

#define REPEAT NUMBER BODY_WML
    # Macro to execute some WML a defined number of times.
    #
    # Example that causes screen to quake 5 times:
    #! {REPEAT 5 (
    #!     {QUAKE "rumble.ogg"}
    #! )}
    {VARIABLE REPEAT_i 0}

    [while]
        [variable]
            name=REPEAT_i
            less_than={NUMBER}
        [/variable]

        [do]
            {BODY_WML}

            {VARIABLE_OP REPEAT_i add 1}
        [/do]
    [/while]

    {CLEAR_VARIABLE REPEAT_i}
#enddef

#define LOOKUP_INDEX FROM_ARRAY_NAME WHERE_KEY_NAME WHERE_VALUE SAVE_AS_NAME
    # Call this to lookup an array element that has a particular key-value pair
    # then it saves the index of that element, or
    # if the key-value pair is not found it saves the array's length
    {VARIABLE {SAVE_AS_NAME} 0}
    [while]
        [variable]
            name={SAVE_AS_NAME}
            less_than=${FROM_ARRAY_NAME}.length
        [/variable]
        [variable]
            name={FROM_ARRAY_NAME}[${SAVE_AS_NAME}].{WHERE_KEY_NAME}
            not_equals={WHERE_VALUE}
        [/variable]
        [do]
            {VARIABLE_OP {SAVE_AS_NAME} add 1}
        [/do]
    [/while]
#enddef

#define LOOKUP_VALUE FROM_ARRAY_NAME WHERE_KEY_NAME WHERE_VALUE SAVE_KEY_NAME DEFAULT_VALUE SAVE_AS_NAME
    # Call this to look up an array element that has a particular key-value pair
    # then it saves another key from that same element.
    {LOOKUP_INDEX {FROM_ARRAY_NAME} {WHERE_KEY_NAME} {WHERE_VALUE} {SAVE_AS_NAME}}
    [if]
        [variable]
            name={SAVE_AS_NAME}
            numerical_equals=${FROM_ARRAY_NAME}.length
        [/variable]
        [then]
            {VARIABLE {SAVE_AS_NAME} {DEFAULT_VALUE}}
        [/then]
        [else]
            {VARIABLE {SAVE_AS_NAME} ${FROM_ARRAY_NAME}[${SAVE_AS_NAME}].{SAVE_KEY_NAME}}
        [/else]
    [/if]
#enddef

#define MODIFY_UNIT FILTER VAR VALUE
    # Alters a unit variable (such as unit.x, unit.type,
    # unit.side), handling all the storing and unstoring.
    #
    # Example that flips all spearmen to side 2:
    #! {MODIFY_UNIT type=Spearman side 2}
    [store_unit]
        [filter]
            {FILTER}
        [/filter]

        variable=MODIFY_UNIT_store
        kill=yes
    [/store_unit]

    [foreach]
        array=MODIFY_UNIT_store
        [do]
            [set_variable]
                name=this_item.{VAR}
                value={VALUE}
            [/set_variable]

            [unstore_unit]
                variable=this_item
                find_vacant=no
            [/unstore_unit]
        [/do]
    [/foreach]

    {CLEAR_VARIABLE MODIFY_UNIT_store,MODIFY_UNIT_i}
#enddef

#define MOVE_UNIT_BY FILTER OFFSET_X OFFSET_Y
    #TODO COMMENT
    [store_unit]
        [filter]
            {FILTER}
        [/filter]

        variable=MOVE_UNIT_store
        kill=yes
    [/store_unit]

    [for]
        array=MOVE_UNIT_store
        variable=MOVE_UNIT_BY_i
        [do]
            {VARIABLE_OP MOVE_UNIT_store[$MOVE_UNIT_BY_i].x add {OFFSET_X}}
            {VARIABLE_OP MOVE_UNIT_store[$MOVE_UNIT_BY_i].y add {OFFSET_Y}}
            [unstore_unit]
                variable=MOVE_UNIT_store[$MOVE_UNIT_BY_i]
                find_vacant=no
            [/unstore_unit]
        [/do]
    [/for]
    {CLEAR_VARIABLE MOVE_UNIT_store}
#enddef

#define MOVE_UNIT FILTER TO_X TO_Y
    # Moves a unit from its current location to the given location, displaying
    # movement normally.
    #
    # Note that setting the destination on an existing unit does not kill either
    # one, but causes the unit to move to the nearest vacant hex instead.
    [move_unit]
        {FILTER}
        to_x={TO_X}
        to_y={TO_Y}
        fire_event=no
    [/move_unit]
#enddef

#define FULL_HEAL FILTER
    [heal_unit]
        [filter]
            {FILTER}
        [/filter]

        amount=full
        restore_statuses=yes
    [/heal_unit]
#enddef

#define PUT_TO_RECALL_LIST FILTER
    # This places a given unit back to the recall list of the side it is on.
    # Note however, that the unit is not healed to full health, so when
    # recalled (even if not until the next scenario) the unit may have less
    # than his maximum hp left.
    #
    # An example that returns all units stepping on (20,38) back to the recall
    # list:
    #
    #! [event]
    #!     name=moveto
    #!
    #!     [filter]
    #!         x,y=20,38
    #!     [/filter]
    #!
    #!     {PUT_TO_RECALL_LIST x,y=20,38}
    #! [/event]
    [put_to_recall_list]
        {FILTER}
    [/put_to_recall_list]
#enddef

#define RECRUIT_UNIT_VARIATIONS SIDE TYPE VARIATIONS_VALUE
    # Allows a side to seemingly recruit variations of a given unit, such as the
    # the Walking Corpse.
    #
    # An example which makes side 2 have a 50% chance of getting a normal WC
    # and a 50% chance of getting either a drake or dwarf variation:
    #! {RECRUIT_UNIT_VARIATIONS 2 "Walking Corpse" none,none,drake,dwarf}
    [event]
        name=prerecruit
        first_time_only=no

        [filter]
            side={SIDE}
            type={TYPE}
        [/filter]

        {VARIABLE_OP recruited_unit_random_variation rand {VARIATIONS_VALUE}}

        [if]
            [variable]
                name=recruited_unit_random_variation
                not_equals=none
            [/variable]

            [then]
                [object]
                    duration=forever
                    silent=yes

                    [filter]
                        x,y=$x1,$y1
                    [/filter]

                    [effect]
                        apply_to=variation
                        name=$recruited_unit_random_variation
                    [/effect]

                    [effect]
                        apply_to=hitpoints
                        heal_full=yes
                    [/effect]
                [/object]
            [/then]
        [/if]

        {CLEAR_VARIABLE recruited_unit_random_variation}
    [/event]
#enddef

#define SCATTER_UNITS NUMBER TYPES PADDING_RADIUS FILTER UNIT_WML
    # Scatters the given kind of units randomly on a given area on the map.
    #
    # An example which scatters some loyal elves on forest hexes in
    # x,y=10-30,20-40, at a minimum of three hexes apart from each other and
    # never on top of or adjacent to any already existing units:
    #! {SCATTER_UNITS 20 "Elvish Fighter,Elvish Archer,Elvish Shaman" 3 (
    #!     terrain=Gs^Fp
    #!     x=10-30
    #!     y=20-40
    #!
    #!     [not]
    #!         [filter]
    #!         [/filter]
    #!     [/not]
    #!
    #!     [not]
    #!         [filter_adjacent_location]
    #!             [filter]
    #!             [/filter]
    #!         [/filter_adjacent_location]
    #!     [/not]
    #! ) (
    #!     side=2
    #!     generate_name=yes
    #!     random_traits=yes
    #!
    #!     [modifications]
    #!         {TRAIT_LOYAL}
    #!     [/modifications]
    #! )}
    [set_variables]
        name=unit_type_table

        [split]
            list={TYPES}
            key=type
            separator=,
        [/split]
    [/set_variables]

    {VARIABLE unit_type_table_i 0}

    [random_placement]
        num_items={NUMBER}
        variable=random_placement_location
        allow_less=yes
        min_distance={PADDING_RADIUS}
        [filter_location]
            {FILTER}
            include_borders=no
        [/filter_location]
        [command]
            [unit]
                type=$unit_type_table[$unit_type_table_i].type
                x,y=$random_placement_location.x,$random_placement_location.y
                {UNIT_WML}
            [/unit]
            {VARIABLE unit_type_table_i ("$(($unit_type_table_i + 1) % $unit_type_table.length)")}
        [/command]
    [/random_placement]

    {CLEAR_VARIABLE unit_type_table,unit_type_table_i,random_placement_location}
#enddef

#define FORCE_CHANCE_TO_HIT FILTER SECOND_FILTER CTH_NUMBER EXTRA_CONDITIONS_WML
    # Invisibly forces certain units to always have a specific chance to hit
    # when fighting against certain other units.
    #
    # Note that the player still only sees the regular damage calculations, so
    # this is useful if you need to give an invisible helping hand to the player
    # or AI. For example, if the player is forced to attack with only a couple
    # of units at the beginning of a scenario, you can use this to ensure that
    # simply having bad luck cannot ruin their attempt so easily. Also you might
    # have enemy leaders which the player is not supposed to fight or be able to
    # defeat due to storyline reasons, but could theoretically still kill with
    # some clever trick, AI mistake or sheer exceptional luck.
    #
    # An example which forces Konrad's attacks to always hit Li'sar, but only
    # after turn 10:
    #! {FORCE_CHANCE_TO_HIT id=Konrad id="Li'sar" 100 (
    #!     [variable]
    #!         name=turn_number
    #!         greater_than=10
    #!     [/variable]
    #! )}
    [event]
        name=attack
        first_time_only=no

        [filter]
            {FILTER}
        [/filter]

        [filter_second]
            {SECOND_FILTER}
        [/filter_second]

        [filter_condition]
            [and]
                {EXTRA_CONDITIONS_WML}
            [/and]
        [/filter_condition]

        [foreach]
            array=unit.attack
            [do]
                [if]
                    #This is to mute a warning message about retrieving a member of non-existant wml container.
                    [variable]
                        name=this_item.specials.length
                        greater_than=0
                    [/variable]

                    [variable]
                        name=this_item.specials.chance_to_hit.length
                        greater_than=0
                    [/variable]

                    [then]
                        [set_variables]
                            name=this_item.specials.original_chance_to_hit
                            to_variable=this_item.specials.chance_to_hit
                        [/set_variables]

                        {CLEAR_VARIABLE this_item.specials.chance_to_hit}
                    [/then]
                [/if]

                [set_variables]
                    name=this_item.specials.chance_to_hit

                    [value]
                        id=forced_cth
                        value={CTH_NUMBER}
                        cumulative=no
                    [/value]
                [/set_variables]
            [/do]
        [/foreach]

        [unstore_unit]
            variable=unit
            find_vacant=no
        [/unstore_unit]

        [event]
            name=attack end
            delayed_variable_substitution=yes

            [foreach]
                array=unit.attack
                [do]
                    {CLEAR_VARIABLE this_item.specials.chance_to_hit}

                    [set_variables]
                        name=this_item.specials.chance_to_hit
                        to_variable=this_item.specials.original_chance_to_hit
                    [/set_variables]

                    {CLEAR_VARIABLE this_item.specials.original_chance_to_hit}
                [/do]
            [/foreach]

            [unstore_unit]
                variable=unit
                find_vacant=no
            [/unstore_unit]
        [/event]
    [/event]

    # The following event is a simple duplicates of the above ones, with the
    # primary and secondary units reversed so that the effect is applied also on
    # defense.
    [event]
        name=attack
        first_time_only=no

        [filter]
            {SECOND_FILTER}
        [/filter]

        [filter_second]
            {FILTER}
        [/filter_second]

        [filter_condition]
            [and]
                {EXTRA_CONDITIONS_WML}
            [/and]
        [/filter_condition]

        [foreach]
            array=second_unit.attack
            [do]
                [if]
                    [variable]
                        name=this_item.specials.length
                        greater_than=0
                    [/variable]

                    [variable]
                        name=this_item.specials.chance_to_hit.length
                        greater_than=0
                    [/variable]

                    [then]
                        [set_variables]
                            name=this_item.specials.original_chance_to_hit
                            to_variable=this_item.specials.chance_to_hit
                        [/set_variables]

                        {CLEAR_VARIABLE this_item.specials.chance_to_hit}
                    [/then]
                [/if]

                [set_variables]
                    name=this_item.specials.chance_to_hit

                    [value]
                        id=forced_cth
                        value={CTH_NUMBER}
                        cumulative=no
                    [/value]
                [/set_variables]
            [/do]
        [/foreach]

        [unstore_unit]
            variable=second_unit
            find_vacant=no
        [/unstore_unit]

        [event]
            name=attack end
            delayed_variable_substitution=yes

            [foreach]
                array=second_unit.attack
                [do]
                    {CLEAR_VARIABLE this_item.specials.chance_to_hit}

                    [set_variables]
                        name=this_item.specials.chance_to_hit
                        to_variable=this_item.specials.original_chance_to_hit
                    [/set_variables]

                    {CLEAR_VARIABLE this_item.specials.original_chance_to_hit}
                [/do]
            [/foreach]

            [unstore_unit]
                variable=second_unit
                find_vacant=no
            [/unstore_unit]
        [/event]
    [/event]
#enddef

#define LOOT AMOUNT SIDE
    {VARIABLE amount_gold {AMOUNT}}

    #TODO add message for the other players!
    [message]
        side_for={SIDE}
        speaker=narrator
        message= _ "You retrieve $amount_gold pieces of gold."
        image=wesnoth-icon.png
        sound=gold.ogg
    [/message]

    {CLEAR_VARIABLE amount_gold}

    [gold]
        side={SIDE}
        amount={AMOUNT}
    [/gold]
#enddef