Figuring out how to organize the src folder(s)...

1 files changed, 193 insertions, 0 deletions

diff --git a/src/shared/struct/sh_statistics.erl b/src/shared/struct/sh_statistics.erl
new file mode 100644
index 0000000..7cf2b06
--- /dev/null
+++ b/src/shared/struct/sh_statistics.erl
@@ -0,0 +1,193 @@
+-module(sh_statistics).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-record
+(
+   statistics,
+   {
+      movement_points :: non_neg_integer(),
+      health :: non_neg_integer(),
+      dodges :: non_neg_integer(),
+      parries :: non_neg_integer(),
+      damage_min :: non_neg_integer(),
+      damage_max :: non_neg_integer(),
+      accuracy :: non_neg_integer(),
+      double_hits :: non_neg_integer(),
+      critical_hits :: non_neg_integer()
+   }
+).
+
+-opaque type() :: #statistics{}.
+
+-export_type([type/0]).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%% Accessors
+-export
+(
+   [
+      get_movement_points/1,
+      get_health/1,
+      get_dodges/1,
+      get_parries/1,
+      get_damage_min/1,
+      get_damage_max/1,
+      get_accuracy/1,
+      get_double_hits/1,
+      get_critical_hits/1,
+
+      get_damages/1
+   ]
+).
+
+-export
+(
+   [
+      new/2
+   ]
+).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-spec ceil (float()) -> integer().
+ceil (F) ->
+   I = trunc(F),
+   case (F > I) of
+      true -> (I + 1);
+      _ -> I
+   end.
+
+-spec float_to_int (float()) -> integer().
+float_to_int (F) -> ceil(F).
+
+-spec min_max (number(), number(), number()) -> number().
+min_max (Min, Max, V) -> min(Max, max(Min, V)).
+
+-spec average (list(number())) -> number().
+%average ([]) -> 0;
+average (L) -> lists:sum(L) / length(L).
+
+% V | 010 | 030 | 050 | 070 | 100 |
+% F | 004 | 023 | 058 | 104 | 200 |
+-spec gentle_squared_growth (number()) -> non_neg_integer().
+gentle_squared_growth (V) -> float_to_int(math:pow(V, 1.8) / 20).
+
+% V | 010 | 030 | 050 | 070 | 100 |
+% F | 001 | 005 | 018 | 041 | 100 |
+-spec sudden_squared_growth (number()) -> non_neg_integer().
+sudden_squared_growth (V) -> float_to_int(math:pow(V, 2.5) / 1000).
+
+% V | 010 | 030 | 050 | 070 | 100 |
+% F | 002 | 006 | 016 | 049 | 256 |
+-spec sudden_exp_growth (number()) -> non_neg_integer().
+sudden_exp_growth (V) -> float_to_int(math:pow(4, V / 25)).
+
+% V | 010 | 030 | 050 | 070 | 100 |
+% F | 040 | 066 | 079 | 088 | 099 |
+% Seems too generous, values for attributes below 50 should dip faster and
+% lower.
+%-spec already_high_slow_growth (non_neg_integer()) -> non_neg_integer().
+%already_high_slow_growth (V) -> float_to_int(30 * math:log((V + 5)/4)).
+
+-spec damage_base_modifier (non_neg_integer()) -> float().
+damage_base_modifier (Strength) -> ((math:pow(Strength, 1.8) / 2000.0) - 0.75).
+
+-spec apply_damage_base_modifier
+   (
+      float(),
+      non_neg_integer()
+   )
+   -> non_neg_integer().
+apply_damage_base_modifier (Modifier, BaseValue) ->
+   max(0, float_to_int(BaseValue + (BaseValue * Modifier))).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%% Accessors
+-spec get_movement_points (type()) -> non_neg_integer().
+get_movement_points (Stats) -> Stats#statistics.movement_points.
+
+-spec get_health (type()) -> non_neg_integer().
+get_health (Stats) -> Stats#statistics.health.
+
+-spec get_dodges (type()) -> non_neg_integer().
+get_dodges (Stats) -> Stats#statistics.dodges.
+
+-spec get_parries (type()) -> non_neg_integer().
+get_parries (Stats) -> Stats#statistics.parries.
+
+-spec get_damage_min (type()) -> non_neg_integer().
+get_damage_min (Stats) -> Stats#statistics.damage_min.
+
+-spec get_damage_max (type()) -> non_neg_integer().
+get_damage_max (Stats) -> Stats#statistics.damage_max.
+
+-spec get_accuracy (type()) -> non_neg_integer().
+get_accuracy (Stats) -> Stats#statistics.accuracy.
+
+-spec get_double_hits (type()) -> non_neg_integer().
+get_double_hits (Stats) -> Stats#statistics.double_hits.
+
+-spec get_critical_hits (type()) -> non_neg_integer().
+get_critical_hits (Stats) -> Stats#statistics.critical_hits.
+
+-spec get_damages (type()) -> {non_neg_integer(), non_neg_integer()}.
+get_damages (Stats) ->
+   {
+      Stats#statistics.damage_min,
+      Stats#statistics.damage_max
+   }.
+
+-spec new
+   (
+      attributes:type(),
+      {weapon:id(), weapon:id()}
+   )
+   -> type().
+new (BaseAttributes, WeaponIDs) ->
+   {ActiveWeaponID, _} = WeaponIDs,
+   ActiveWeapon = weapon:from_id(ActiveWeaponID),
+   {MinDamage, MaxDamage} = weapon:get_damages(ActiveWeapon),
+   Attributes = weapon:apply_to_attributes(BaseAttributes, ActiveWeapon),
+   Constitution = attributes:get_constitution(Attributes),
+   Dexterity = attributes:get_dexterity(Attributes),
+   Intelligence = attributes:get_intelligence(Attributes),
+   Mind = attributes:get_mind(Attributes),
+   Speed = attributes:get_speed(Attributes),
+   Strength = attributes:get_strength(Attributes),
+   DamageBaseModifier = damage_base_modifier(Strength),
+
+   #statistics
+   {
+      movement_points =
+         gentle_squared_growth
+         (
+            average([Mind, Constitution, Constitution, Speed, Speed, Speed])
+         ),
+      health =
+         gentle_squared_growth(average([Mind, Constitution, Constitution])),
+      dodges =
+         min_max(0, 100, sudden_exp_growth(average([Dexterity, Mind, Speed]))),
+      parries =
+         min_max
+         (
+            0,
+            75,
+            sudden_exp_growth
+            (
+               average([Dexterity, Intelligence, Speed, Strength])
+            )
+         ),
+      damage_min = apply_damage_base_modifier(DamageBaseModifier, MinDamage),
+      damage_max = apply_damage_base_modifier(DamageBaseModifier, MaxDamage),
+      accuracy = min_max(0, 100, sudden_squared_growth(Dexterity)),
+      double_hits =
+         min_max(0, 100, sudden_squared_growth(average([Mind, Speed]))),
+      critical_hits = min_max(0, 100, sudden_squared_growth(Intelligence))
+   }.