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|
-module(shr_weapon).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-opaque id() :: non_neg_integer().
-type range_type() :: 'ranged' | 'melee'.
-type range_modifier() :: 'long' | 'short'.
-type damage_type() :: 'slash' | 'pierce' | 'blunt'.
-type damage_modifier() :: 'heavy' | 'light'.
-record
(
weapon,
{
id :: id(),
name :: binary(),
range_type :: range_type(),
range_mod :: range_modifier(),
damage_type :: damage_type(),
damage_mod :: damage_modifier(),
coef :: float()
}
).
-opaque type() :: #weapon{}.
-export_type([type/0, id/0]).
-export_type
(
[
range_type/0,
range_modifier/0,
damage_type/0,
damage_modifier/0
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Accessors
-export
(
[
get_id/1,
get_name/1,
get_range_type/1,
get_range_modifier/1,
get_damage_type/1,
get_damage_modifier/1,
get_coefficient/1,
get_ranges/1,
get_damages/1
]
).
-export
(
[
random_id/0,
from_id/1,
can_parry/1,
apply_to_attributes/2
]
).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec ranges_of_type
(
range_type(),
range_modifier()
)
-> {non_neg_integer(), non_neg_integer()}.
ranges_of_type (ranged, long) -> {2, 6};
ranges_of_type (ranged, short) -> {1, 4};
ranges_of_type (melee, long) -> {0, 2};
ranges_of_type (melee, short) -> {0, 1}.
-spec damages_of_type
(
range_type(),
damage_modifier()
)
-> {non_neg_integer(), non_neg_integer()}.
damages_of_type (ranged, heavy) -> {15, 30};
damages_of_type (ranged, light) -> {10, 25};
damages_of_type (melee, heavy) -> {20, 35};
damages_of_type (melee, light) -> {15, 30}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%% Accessors
-spec get_id (type()) -> id().
get_id (Wp) -> Wp#weapon.id.
-spec get_name (type()) -> binary().
get_name (Wp) -> Wp#weapon.name.
-spec get_range_type (type()) -> range_type().
get_range_type (Wp) -> Wp#weapon.range_type.
-spec get_range_modifier (type()) -> range_modifier().
get_range_modifier (Wp) -> Wp#weapon.range_mod.
-spec get_damage_type (type()) -> damage_type().
get_damage_type (Wp) -> Wp#weapon.damage_type.
-spec get_damage_modifier (type()) -> damage_modifier().
get_damage_modifier (Wp) -> Wp#weapon.damage_mod.
-spec get_coefficient (type()) -> float().
get_coefficient (Wp) -> Wp#weapon.coef.
-spec get_ranges (type()) -> {non_neg_integer(), non_neg_integer()}.
get_ranges (Wp) ->
ranges_of_type(Wp#weapon.range_type, Wp#weapon.range_mod).
-spec get_damages (type()) -> {non_neg_integer(), non_neg_integer()}.
get_damages (Wp) ->
Coef = Wp#weapon.coef,
{Min, Max} = damages_of_type(Wp#weapon.range_type, Wp#weapon.damage_mod),
{shr_math_util:ceil(Min * Coef), shr_math_util:ceil(Max * Coef)}.
-spec can_parry (type()) -> boolean().
can_parry (Wp) -> (Wp#weapon.range_type == melee).
-spec from_id (id()) -> type().
m4_include(__MAKEFILE_DATA_DIR/weapon/global.m4.conf)m4_dnl
__WEAPON_USE_ERLANG_STYLE
m4_include(__MAKEFILE_DATA_DIR/weapon/basic.m4d)m4_dnl
from_id (_) ->
from_id(0).
-spec random_id () -> id().
random_id () -> shr_roll:between(0, 24).
-spec apply_to_attributes
(
type(),
shr_attributes:type()
)
-> shr_attributes:type().
apply_to_attributes (Weapon, Attributes) ->
Dexterity = shr_attributes:get_dexterity(Attributes),
Speed = shr_attributes:get_speed(Attributes),
RangeModifier = Weapon#weapon.range_mod,
DamageModifier = Weapon#weapon.damage_mod,
Impact = (20.0 * Weapon#weapon.coef),
FullImpact = shr_math_util:ceil(Impact),
QuarterImpact = shr_math_util:ceil(Impact / 4.0),
ResultingDexterity =
case RangeModifier of
long -> (Dexterity - FullImpact);
short -> (Dexterity - QuarterImpact)
end,
ResultingSpeed =
case DamageModifier of
heavy -> (Speed - FullImpact);
light -> (Speed - QuarterImpact)
end,
S0Attributes = shr_attributes:set_unsafe_speed(ResultingSpeed, Attributes),
S1Attributes =
shr_attributes:set_unsafe_dexterity(ResultingDexterity, S0Attributes),
S1Attributes.
|
