Starting a new branch to add stats.

2 files changed, 61 insertions, 2 deletions

diff --git a/src/calc/calc_stats.erl b/src/calc/calc_stats.erl
new file mode 100644
index 0000000..65a3aec
--- /dev/null
+++ b/src/calc/calc_stats.erl
@@ -0,0 +1,29 @@
+-module(calc_stats).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-export
+(
+   [
+      weapon_min_damage/2,
+      weapon_hit_chances/1
+   ]
+).
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+weapon_min_damage (WeaponProf) ->
+
+weapon_hit_chances (WeaponProf) ->
+   HitChance = 50 + trunc(math:ceil(WeaponProf / 2)),
+   case HitChance of
+      % Not a satisfactory way to handle double hits, as it does not allow
+      % the players to specialize their characters for it.
+      N when N > 75 -> {HitChance, 75 - HitChance};
+      _ -> {HitChance, 0}
+   end.
diff --git a/src/type/character_instance.erl b/src/type/character_instance.erl
index ee50460..3fc7171 100644
--- a/src/type/character_instance.erl
+++ b/src/type/character_instance.erl
@@ -10,7 +10,12 @@
       x,
       y,
       health,
-      team
+      team,
+      active_wp,
+      min_dmg,
+      max_dmg,
+      hit_chance,
+      double_hit_chance
    }
 ).
 
@@ -34,6 +39,7 @@
 (
    [
       new_instance_of/3,
+      switch_weapon/2,
       is_dead/1 % is_alive is reserved.
    ]
 ).
@@ -41,6 +47,16 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+get_new_weapon(CharInst, Char) ->
+   case CharInst#character_instance.active_wp of
+      0 ->
+         {_, Weapon} = character:get_weapons(Char),
+         {1, Weapon};
+
+      1 ->
+         {Weapon, _} = character:get_weapons(Char),
+         {0, Weapon}
+   end.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -80,7 +96,21 @@ new_instance_of (Char, Owner, {X, Y}) ->
       x = X,
       y = Y,
       health = character:get_max_health(Char),
-      team = Owner
+      team = Owner,
+      active_wp = 0
+   }.
+
+switch_weapon (CharInst, Char) ->
+   {NewWpIndex, Weapon} = get_new_weapon(CharInst, Char),
+   WeaponProf = character:get_proficiency(Char, weapon:get_type(Weapon)),
+   {HitChance, DoubleHitChance} = calc_stats:weapon_hit_chances(WeaponProf),
+   CharInst#character_instance
+   {
+      active_wp = NewWpIndex,
+      min_dmg = calc_stats:weapon_min_damage(Weapon, WeaponProf),
+      max_dmg = weapon:get_max_damage(Weapon),
+      hit_chance = HitChance,
+      double_hit_chance = DoubleHitChance
    }.
 
 is_dead (CharInst) -> (CharInst#character_instance.health == 0).