v.2.2.
Few more clean ups.

v. 2.1.
Some little fixes

v.2.0.
Mod now makes use of REPENTOGON, for some better synergies.
Mod still works without it, but mostly works same as v.1.11, in that case.
p.s.: by familiars, I only mean familiars, that copy player's attacks, e.g. Incubus.

General (Rep/Rgon)
⠀•⠀Mod Config Menu is now supported.
⠀•⠀Now corresponding damage multiplier is used for familiars.
⠀•⠀Familiars have their own Neptunus charge instead of totally depending on player.
⠀•⠀Only Incubus and Umbilical baby show their Neptunus charge.
⠀•⠀New Brimstone synergy. Was changed to fit concept art[bindingofisaacrebirth.fandom.com], but I also remember somebody suggesting it somewhere.
⠀•⠀Reworked Mom's Knife synergy.
⠀•⠀Little changes to Mom's Knife + Ludovico synergy.
⠀•⠀New Spirit Sword synergy.
⠀•⠀Little changes to Epic Fetus synergy.
⠀•⠀Calculated new charge/discharge formula, based on vanilla Neptunus values.

The Ludovico Technique:
(Rep/Rgon) same as before.

Monstro's Lung:
(Rep/Rgon) Neptunus tears aren't fired, unless Lung is charged.

Technology:
(Rep/Rgon) now is little closer to vanilla Neptunus.
(Rgon) +Chocolate Milk: now works like vanilla Neptunus + Chocolate Milk combo.
(Rgon) Shortening delay between shots now works for familiars.

Tech X:
(Rgon) item's charge is shortened, depending on Neptunus charge; while Neptunus charge > 5%, shoots automatically, when item reaches max charge.
(Rep) same as before: laser is widened, depending on charge.

Brimstone:
(Rep/Rgon) beam's duration is increased up to 5x (40 ticks, normally);
(Rep/Rgon) +C Section: more fetuses are spawned due to longer duration.
(Rep/Rgon) +Soy/Almond Milk, Ludovico: now also increases damage, additionally to width (as increasing duration would not be helpful).

Dr. Fetus:
(Rep/Rgon) now is little closer to vanilla Neptunus.
(Rgon) Shortening delay between shots now works for familiars.

Epic Fetus:
(Rep/Rgon) trajectory of spawned tears is now different (tears now fly pretty high up, instead of just moving horizontally). Number of tears spawned depends on Neptunus charge.

Mom's Knife:
(Rep/Rgon) depending on Neptunus charge, 0 to 3 pseudo-knives (in reality tears with changed visuals) are launched for each knife.
(Rep/Rgon) +Ludovico: now whirlpool is spawned only for main/central knife, but it's size and pulling force also depends on number of knives.

Spirit Sword:
(Rep/Rgon) usual attack is transformed into spin attack, requiring some Neptunus charge.
After transformed Spin Attack, you can continue charging to activate normal spin attack.
Note that transformation isn't perfect: transformed spin doesn't reflect enemies' projectiles and it's hitbox is smaller than it seems to be.

Forgotten's Bone/Berserk:
(Rep/Rgon) little misc. changes and fixes.
(Rep/Rgon) +Cursed Eye: should work more consistently.
(Rep/Rgon) +Monstro's Lung: cancels tear shoot, only adding additional lung-style tears (bones due to character).
(Rgon) +Brimstone: cancels tear shoot; Brim-ball's velocity is now increased depending on Neptunus charge.
(Rep/Rgon) +Epic Fetus: works now, similarly to normal Epic Fetus.

C Section:
(Rgon) item's charge is shortened, depending on Neptunus charge; works pretty like vanilla Neptunus.
(Rep) same as before: fetuses shoot tears, no dependance on Neptunus charge.
[/list]


(Rgon) now normal Neptunus works for T. Lilith.
(Rgon) Now ALL synergies work same for familiars;

v.1.11.

• Починил Нептун + заряжаемую Технологию (Техн + Лёгкое Монстро, Техн + Шоколадное Молоко, Техн + Проклятый Глаз).
  
• Починил, что Нептун + Доктор Зародыш или Нептун + Технология могут сломаться, если получить скорострельность ↑.
  
• Нептун + Духовный Меч заряжается намного быстрее (в 2 раза быстрее, если быть точным), чтобы сделать эффект Нептуна хоть немножко более желаемым, нежели обычный спам мечом, не смотря на необходимость подождать.
  Ради вселенского баланса, увеличение размера меча было сделано слабее (1.25 раза -> 1.2 раза).
  
• Полоса заряда Нептуна теперь рендерится только над водой. Теперь не будет странного поломаного отражения под водой (и анимация полного заряда не будет ускоренной в комнатах с водой)!
  
• Изменил, то как работает доп. спрайт для мечей от Нептуна + Духовного Меча. Теперь используется просто спрайт, а не сущность с заменённым anm2 (в частности, я пользовался сущностями-эффектами тумана).
  Впрочем, этот трюк всё ещё используется для водоворота от комбинации Нептун + Мамин Нож + Техника Людовика, так как рендерить это дело так, как надо без сущности не получается.
  
• Убрал контуры с капелек, которые появляются с конца лазеров. Теперь они не отвлекают, да и поближе внешним видом к жидкостям от Водолея, Святой Водицы и т. д.
  
• Мод теперь перекрашивает слёзы Гемолакрии (и Гемолакрии + Серы) в синий, усли у игрока их выпустившего, есть Нептун, конечно же.
  Сделано впрочем не идеально - изменение цвета слезы изменяет и цвет лазеров/слёз из неё появившихся (хотя по моим-экспериментам, на слёзы не повлияло). Но с тем как работает игра, думаю, сделано наилучшим образом?..

И да, к слову, если вы не знали (а я уверен, что вы это не заметили), если у игрока есть Нептун, мод заменяет слёзы кровавых вариантов - обратно синие. Функция была в моде с самого начала, просто я не посчитал её такой уж важной, чтоб прям афишировать.


А ещё извините, пока работал над слезами от Гемолакрии (и своими реальными заодно), накопилось немного "Edmund, you little f" энергии, которую мне надо было выпустить. Переводить не буду, посвящается Эдмунду (и в малой степени Килбурну, за то что он это за Эдмундом не поправил):
Seriously, I don't even have that many mods, yet it's already second time when I run into the same problem - effects related to tears have nil set as their spawner. Why on earth it works like this, Edmund!? There can be more than 1 player, and I NEED to know, which one of them created this goddamn poof! Or even better, that poof may be created by some enemy's bullet! And that isn't some sort of "special exclusive" for poofs! Haemolacria trails also have nothing instead of spawner. WHY? Unlike poofs, which sort of suggest, that there is no tear already, trails are created while tear still EXISTS! I don't wanna guess, which player is possibly responsible for some effect from a tear, I want to know it for sure! At this rate I will have to create mod that will remove all "natural" tear effects and will spawn them manually with player set as their spawner!

v.1.10.

• Fixed SoyBrim.

Yeah, that's all.

Thanks @Laird Ichofox, for reporting this.

Back to normal.

Oops. Uploaded wrong mod.

v.1.9.
⠀•⠀Fixed Dr. Fetus and Epic Fetus causing errors.
⠀•⠀Made more meticulous check before applying effects for tears and lasers.
On one hand that decreased number of synergies, on other made things more stable.
E.g., having Neptunus+Spirit Sword+Ludovico with "More Spirit Sword Synergies" mod by JamesB456 previously lead to bug, and could even crash game.
Another example - brimstone lasers from Dr. Fetus Brim-Bombs, also gained effect, and were being widened.

v.1.8.
Mostly, just little fixes.

• Fixed error reported by rainy (oversight at knife update, that lead to error).
  
• Ludovico tears spawned by incubus and alike familiars now work.
  
• Fixed brim lasers not being widened if character couldn't shoot (e.g. Lilith + Brim).
  
• Tears created by Neptunus+Monstro's Lung and Neptunus+Monstro's Lung+Bone/Berserk now inherit velocity from player's movement.
  Familiars now have lower dmg multiplier in these synergies (0.8~1.3 --> 0.6~1)
  
• Fixed Monstro's Lung + Bone/Berserk causing error if character couldn't shoot or if it was T. Lilith.

v.1.7.

• Made special chargebar, instead of recoloring default one. Compatible with Improved Chargebars mod.
  
• Improved sword synergy visual. Now, under physical neptunus sword, you'll see a water made one.
  While physical will have size of normal sword, water one will have size of an actual attack (making much easier to see how much attack is largened). It's also custom sword compatible now.
  
• Yet another Forgotten/Berserk change. Now, instead of spawning multiple tears, huge water splash will be spawned.
  Splash's size and damage depends on Neptunus charge.
  Splash will gain some of tear effects, such as inflicting poison or burning.
  
• Remade Knife+Ludo+Neptunus synergy so it doesn't feel awkward. Now it will spawn whirlpool, which will pull enemies and pickups.
  Whirlpool's size, and pull force depend on Neptunus charge.

Mod is taking it's final shape more or less.