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|
-module(btl_action).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-record
(
move,
{
actor_ix :: non_neg_integer(),
path :: list(shr_direction:enum()),
movement_points :: (non_neg_integer() | -1)
}
).
-record
(
switch_weapon,
{
actor_ix :: non_neg_integer()
}
).
-record
(
attack,
{
actor_ix :: non_neg_integer(),
target_ix :: non_neg_integer(),
is_opportunistic :: boolean()
}
).
-type category() ::
(
'move'
| 'switch_weapon'
| 'attack'
| 'nothing'
).
-opaque type() ::
(
#move{}
| #switch_weapon{}
| #attack{}
).
-export_type([category/0, type/0]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-export
(
[
from_map_marker/3,
maybe_decode_move/2,
maybe_decode_weapon_switch/2,
maybe_decode_attack/2,
can_follow/2
]
).
-export
(
[
new_move/3,
new_attack_of_opportunity/2
]
).
-export
(
[
get_is_opportunistic/1,
get_path/1,
get_movement_points/1,
get_target_index/1,
get_actor_index/1,
get_category/1
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec maybe_decode_move
(
non_neg_integer(),
list(shr_direction:type())
)
-> list(type()).
maybe_decode_move (_CharacterIX, []) -> [];
maybe_decode_move (CharacterIX, PathInBinary) ->
Path = lists:map(fun shr_direction:decode/1, PathInBinary),
[
#move
{
actor_ix = CharacterIX,
path = Path,
movement_points = -1
}
].
-spec maybe_decode_attack
(
non_neg_integer(),
integer()
)
-> list(type()).
maybe_decode_attack (_CharacterIX, TargetIX) when (TargetIX < 0) -> [];
maybe_decode_attack (CharacterIX, TargetIX) ->
[
#attack
{
actor_ix = CharacterIX,
target_ix = TargetIX,
is_opportunistic = false
}
].
-spec maybe_decode_weapon_switch
(
non_neg_integer(),
boolean()
)
-> list(type()).
maybe_decode_weapon_switch (_CharacterIX, false) -> [];
maybe_decode_weapon_switch (CharacterIX, true) ->
[#switch_weapon{ actor_ix = CharacterIX }].
-spec can_follow (category(), category()) -> boolean().
can_follow (nothing, attack) -> true;
can_follow (nothing, switch_weapon) -> true;
can_follow (nothing, move) -> true;
can_follow (move, switch_weapon) -> true;
can_follow (move, attack) -> true;
can_follow (_, _) -> false.
-spec get_path (type()) -> list(shr_direction:type()).
get_path (Action) when is_record(Action, move) -> Action#move.path;
get_path (_) ->
[].
-spec get_movement_points (type()) -> (non_neg_integer() | -1).
get_movement_points (Action) when is_record(Action, move) ->
Action#move.movement_points;
get_movement_points (_) -> -1.
-spec get_target_index (type()) -> (non_neg_integer() | -1).
get_target_index (Action) when is_record(Action, attack) ->
Action#attack.target_ix;
get_target_index (_) -> -1.
-spec get_actor_index (type()) -> (non_neg_integer() | -1).
get_actor_index (Action) when is_record(Action, attack) ->
Action#attack.actor_ix;
get_actor_index (Action) when is_record(Action, move) ->
Action#move.actor_ix;
get_actor_index (Action) when is_record(Action, switch_weapon) ->
Action#switch_weapon.actor_ix;
get_actor_index (_) ->
-1.
-spec get_is_opportunistic (type()) -> boolean().
get_is_opportunistic (Action) when is_record(Action, attack) ->
Action#attack.is_opportunistic;
get_is_opportunistic (_) -> false.
-spec new_move
(
non_neg_integer(),
list(shr_direction:type()),
(non_neg_integer() | -1)
)
-> type().
new_move (ActorIX, Path, MovementPoints) ->
#move
{
actor_ix = ActorIX,
path = Path,
movement_points = MovementPoints
}.
-spec new_attack_of_opportunity
(
non_neg_integer(),
non_neg_integer()
)
-> type().
new_attack_of_opportunity (ActorIX, TargetIX) ->
#attack
{
actor_ix = ActorIX,
target_ix = TargetIX,
is_opportunistic = true
}.
-spec get_category (type()) -> category().
get_category (Action) when is_record(Action, attack) -> attack;
get_category (Action) when is_record(Action, move) -> move;
get_category (Action) when is_record(Action, switch_weapon) -> switch_weapon.
-spec from_map_marker
(
non_neg_integer(),
btl_character:type(),
shr_map_marker:type()
)
-> list(type()).
from_map_marker (CharacterIX, _Character, Marker) ->
case shr_map_marker:get_category(Marker) of
matk ->
[
#attack
{
target_ix = CharacterIX,
actor_ix = shr_map_marker:get_character_index(Marker),
is_opportunistic = true
}
];
_ -> []
end.
|
