##### Crawl Init file ###############################################
# For descriptions of all options, as well as some more in-depth information
# on setting them, consult the file
#    options_guide.txt
# in your /docs directory. If you can't find it, the file is also available
# online at:
# https://github.com/crawl/crawl/blob/master/crawl-ref/docs/options_guide.txt
#
# Crawl uses the first file of the following list as its option file:
#  * init.txt in the -rcdir directory (if specified)
#  * .crawlrc in the -rcdir directory (if specified)
#  * init.txt (in the Crawl directory)
#  * ~/.crawl/init.txt (Unix only)
#  * ~/.crawlrc (Unix only)
#  * ~/init.txt (Unix only)
#  * settings/init.txt (in the Crawl directory)

##### Some basic explanation of option syntax #######################
# Lines beginning with '#' are comments. The basic syntax is:
#
# field = value         or      field.subfield = value
#
# Only one specification is allowed per line.
#
# The terms are typically case-insensitive except in the fairly obvious
# cases (the character's name and specifying files or directories when
# on a system that has case-sensitive filenames).
#
# White space is stripped from the beginning and end of the line, as
# well as immediately before and after the '='. If the option allows
# multiple comma/semicolon-separated terms (such as
# autopickup_exceptions), all whitespace around the separator is also
# trimmed. All other whitespace is left intact.
#
# There are three broad types of Crawl options: true/false values (booleans),
# arbitrary values, and lists of values. The first two types use only the
# simple =, with later options - which includes your options that are different
# from the defaults - overriding earlier ones. List options allow using +=, ^=,
# -=, and = to append, prepend, remove, and reset, respectively. Usually you will
# want to use += to add to a list option. Lastly, there is := which you can use
# to create an alias, like so:
#   ae := autopickup_exceptions
# From there on, 'ae' will be treated as if it you typed autopickup_exceptions,
# so you can save time typing it.
#

##### Other files ###################################################
# You can include other files from your options file using the 'include'
# option. Crawl will treat it as if you copied the whole text of that file
# into your options file in that spot. You can uncomment some of the following
# lines by removing the beginning '#' to include some of the other files in
# this folder.

# Some useful, more advanced options, implemented in LUA.
# include = advanced_optioneering.txt

# Alternative vi bindings for Dvorak users.
# include = dvorak_command_keys.txt

# Alternative vi bindings for Colemak users.
# include = colemak_command_keys.txt

# Alternative vi bindings for Neo users.
# include = neo_command_keys.txt

# Override the vi movement keys with a non-command.
# include = no_vi_command_keys.txt

# Turn the shift-vi keys into safe move, instead of run.
# include = safe_move_shift.txt

##### Ancient versions ##############################################
# If you're used to the interface of ancient versions of Crawl, you may
# get back parts of it by uncommenting the following options:

# include                 = 034_command_keys.txt

# And to revert monster glyph and colouring changes:

# include                 = 052_monster_glyphs.txt
# include                 = 060_monster_glyphs.txt
# include                 = 071_monster_glyphs.txt
# include                 = 080_monster_glyphs.txt
# include                 = 0.9_monster_glyphs.txt
# include                 = 0.12_monster_glyphs.txt
# include                 = 0.13_monster_glyphs.txt
# include                 = 0.14_monster_glyphs.txt




{
  function ready()
    AnnounceDamage()
    HitChance()
  end
}




{

function sum(t)
  s = 0
  for _,v in pairs(t) do
    s = s + v
  end

  return s
end

function dump(o)
  if type(o) == 'table' then
    local s = '{ '
    for k,v in pairs(o) do
      if type(k) ~= 'number' then k = '"'..k..'"' end
      s = s .. '['..k..'] = ' .. dump(v) .. ','
    end
    return s .. '} '
  else
  return tostring(o)
  end
end

function more_or_equal(attack, ev)
  more_or_eq = 0
  less = 0
  for a,_ in pairs(attack) do
    for e,_ in pairs(ev) do
      if a >= e then more_or_eq = more_or_eq + attack[a]*ev[e]
      else less = less + attack[a]*ev[e] end
    end
  end
  s = more_or_eq + less
  return more_or_eq/s
end

function averge(ch)
  ch2 = {}
  for k,_ in pairs(ch) do
    ch2[math.floor(k/2)] = ch[k]
  end
  return ch2
end

function inc_base(ch, value)
  ch2 = {}
  for k,_ in pairs(ch) do
    ch2[k+value] = ch[k]
  end
  return ch2
end

function roll_chance(ch)
  ch2 = {}
  for i,_ in pairs(ch) do
    for j = 0, i+1 do
      k = math.max(0, j-1)
      if ch2[k] == nil then ch2[k] = ch[i]
      else ch2[k] = ch2[k] + ch[i] end
    end
  end

  s = sum(ch2)
  for i,_ in pairs(ch2) do
    ch2[i]=ch2[i]/s
  end

  return ch2
end

function calc_chance(skill)
  whole = math.floor(skill)
  ch = {}
  for i=0,whole do
    if ch[i] == nil then ch[i] = 1
    else ch[i] = ch[i] + 1 end
  end

  fraction = skill - whole
  if fraction > 0 then
    ch[whole] = fraction
  end

  s = sum(ch)
  for k,_ in pairs(ch) do
    ch[k]=ch[k]/s
  end
  if ch == {} then
    ch[0] = 1
  end
  return ch
end

function mult_chances(ch1, ch2)
  ch3 = {}
  for i,_ in pairs(ch1) do
    for j,_ in pairs(ch2) do
      if ch3[i+j] == nil then ch3[i+j] = ch1[i]*ch2[j]
      else ch3[i+j] = ch3[i+j] + ch1[i]*ch2[j] end
    end
  end
  return ch3
end

function calc_armour_penalty(e, a, s)
  return ((40*e*e*(450-10*a)/(5*(s+3)))/450)/20
end
    
function calc_chance_armour(pen)
  if pen == 0 then return { [0]=1 } end

  ch = {}
  whole = math.floor(pen)
  step = 1
  if whole+1 < 0 then step = -1 end
  for i = 1, whole+1, step do
    if ch[-i] == nil then ch[-i] = 1 
    else ch[-i] =  ch[-i] + 1 end
  end
    
  fraction = pen - whole
  if fraction == 0 then
    ch[-whole-1] = fraction
  end

  s = sum(ch)
  for i,_ in pairs(ch) do
    ch[i] = ch[i] / s
  end

  if ch == {} then ch[0] = 1 end
    
  return ch
end

local monsters = {["D:1"] = {"goblin", 12},
                  ["D:2"] = {"adder", 15},
                  ["D:3"] = {"orc wizard", 12},
                  ["D:4"] = {"orc wizard", 12},
                  ["D:5"] = {"bullfrog", 12},
                  ["D:6"] = {"bullfrog", 12} }

function try_get_ev(where)
  r = {"goblin", 12}
  if monsters[where] then 
    r = monsters[where]
  end

  return r
end

function HitChance()
  if crawl.regex("(\(weapon\))|empty-handed|finish taking off|finish putting on"):matches(crawl.messages(1)) == false 
  or you.feel_safe() == false then
    return
  end
  basevalue = 15

  dexterity = you.dexterity()
  strength = you.strength()

  fighting = you.skill("Fighting")
  f_ch = calc_chance(fighting)

  armour = you.skill("Armour")
  e_rating = 0
  a1 = items.equipped_at("Armour")
  if a1 then
    e_rating = a1.encumbrance
  end

  weapon = 0
  accuracy = 0

  w = items.equipped_at("Weapon")
  if w == nil then
    weapon = you.skill("Unarmed")
    accuracy = 2
    if you.has_claws() > 0 then accuracy = 4 end
  else
    weapon = you.skill(w.weap_skill)
    accuracy = w.accuracy + w.plus
  end

  w_ch = calc_chance(weapon)
  m_ch = mult_chances(f_ch, w_ch)

  e_penalty = calc_armour_penalty(e_rating, armour, strength)
  e_ch = calc_chance_armour(e_penalty)

  m_ch = mult_chances(m_ch, e_ch)

  s = items.equipped_at("Shield")
  if s then 
    shields = you.skill("Shields")
    size = 0
    race = you.race()
    if race == "Spriggan"                                         then size = 4 
    elseif race == "Kobold" or race == "Halfling"                 then size = 2 
    elseif race == "Centaur" or race == "Naga" 
      or race == "Formicid" or race == "Ogre" or race == "Troll"  then size = -2
    end
    ev_penalty = s.encumbrance
    s_hit_penalty = ev_penalty - (shields)/(5 + size)
    sh_ch = calc_chance_armour(s_hit_penalty)
    m_ch = mult_chances(m_ch, sh_ch)
  end

  basevalue = basevalue + math.floor(dexterity/2) + accuracy
  inc_v = inc_base(m_ch, basevalue)

  roll_c = roll_chance(inc_v)

  ev = try_get_ev(you.where())[2]
  ev_ch = averge(mult_chances(calc_chance(2*ev), calc_chance(2*ev)))

  hit = more_or_equal(roll_c, ev_ch)
  
  w_name = "fists"
  if you.has_claws() > 0 then w_name = "claws" end
  if w then w_name = w.name() end
  crawl.mpr("<lightcyan>Chance to hit <red>"..try_get_ev(you.where())[1].."</red> with <yellow>".. w_name.."</yellow> is <yellow>"
    ..tostring(math.floor(hit*1000)/10).."%</yellow></lightcyan>")
end

}














# Ask HilariousDeathArtist to fix things

# To use this you must add have a call to AnnounceDamage() in the ready() function like below:
# This is important if you override this ready() function

###############
# Damage Calc #
###############
{
  local previous_hp = 0
  local previous_mp = 0
  local previous_form = ""
  local was_berserk_last_turn = false

  function AnnounceDamage()
    local current_hp, max_hp = you.hp()
    local current_mp, max_mp = you.mp()
    --Things that increase hp/mp temporarily really mess with this
    local current_form = you.transform()
    local you_are_berserk = you.berserk()
    local max_hp_increased = false
    local max_hp_decreased = false

    if (current_form ~= previous_form) then
      if (previous_form:find("dragon") or
          previous_form:find("statue") or
          previous_form:find("tree") or
          previous_form:find("ice")) then
        max_hp_decreased = true
      elseif (current_form:find("dragon") or
          current_form:find("statue") or
          current_form:find("tree") or
          current_form:find("ice")) then
        max_hp_increased = true
      end
    end
    if (was_berserk_last_turn and not you_are_berserk) then
      max_hp_decreased = true
    elseif (you_are_berserk and not was_berserk_last_turn) then
      max_hp_increased = true
    end

    --crawl.mpr(string.format("previous_form is: %s", previous_form))
    --crawl.mpr(string.format("current_form is: %s", current_form))
    --crawl.mpr(string.format("max_hp_increased is: %s", max_hp_increased and "True" or "False"))
    --crawl.mpr(string.format("max_hp_decreased is: %s", max_hp_decreased and "True" or "False"))

    --crawl.mpr(string:format("you_are_berserk is: %s", you_are_berserk and "True" or "False"))
    --crawl.mpr(string:format("was_berserk_last_turn is: %s", was_berserk_last_turn and "True" or "False"))


    --Skips message on initializing game
    if previous_hp > 0 then
      local hp_difference = previous_hp - current_hp
      local mp_difference = previous_mp - current_mp

      if max_hp_increased or max_hp_decreased then
        if max_hp_increased then
          crawl.mpr("<green>You now have " .. current_hp .. "/" .. max_hp .. " hp.</green>")
        else
          crawl.mpr("<yellow>You now have " .. current_hp .. "/" .. max_hp .. " hp.</yellow>")
        end
      else
        --On losing health
        if (current_hp < previous_hp) then
          if current_hp <= (max_hp * 0.30) then
            crawl.mpr("<red>You take " .. hp_difference .. " damage,</red><lightred> and have " .. current_hp .. "/" .. max_hp .. " hp.</lightred>")
          elseif current_hp <= (max_hp * 0.50) then
            crawl.mpr("<red>You take " .. hp_difference .. " damage, and have " .. current_hp .. "/" .. max_hp .. " hp.</red>")
          elseif current_hp <= (max_hp *  0.70) then
            crawl.mpr("<red>You take " .. hp_difference .. " damage,</red><yellow> and have " .. current_hp .. "/" .. max_hp .. " hp.</yellow>")
          elseif current_hp <= (max_hp * 0.90) then
            crawl.mpr("<red>You take " .. hp_difference .. " damage,</red><lightgrey> and have " .. current_hp .. "/" .. max_hp .. " hp.</lightgrey>")
          else
            crawl.mpr("<red>You take " .. hp_difference .. " damage,</red><green> and have " .. current_hp .. "/" .. max_hp .. " hp.</green>")
          end
          if hp_difference > (max_hp * 0.20) then
            crawl.mpr("<lightred>MASSIVE DAMAGE!!</lightred>")
          end
        end

        --On gaining more than 1 health
        if (current_hp > previous_hp) then
          --Removes the negative sign
          local health_inturn = (0 - hp_difference)
          if (health_inturn > 1) and not (current_hp == max_hp) then
            if current_hp <= (max_hp * 0.30) then
              crawl.mpr("<green>You regained " .. health_inturn .. " hp,</green><lightred> and now have " .. current_hp .. "/" .. max_hp .. " hp.</lightred>")
            elseif current_hp <= (max_hp * 0.50) then
              crawl.mpr("<green>You regained " .. health_inturn .. " hp,</green><red> and now have " .. current_hp .. "/" .. max_hp .. " hp.</red>")
            elseif current_hp <= (max_hp *  0.70) then
              crawl.mpr("<green>You regained " .. health_inturn .. " hp,</green><yellow> and now have " .. current_hp .. "/" .. max_hp .. " hp.</yellow>")
            elseif current_hp <= (max_hp * 0.90) then
              crawl.mpr("<green>You regained " .. health_inturn .. " hp,</green><lightgrey> and now have " .. current_hp .. "/" .. max_hp .. " hp.</lightgrey>")
            else
              crawl.mpr("<green>You regained " .. health_inturn .. " hp, and now have " .. current_hp .. "/" .. max_hp .. " hp.</green>")
            end
          end
          if (current_hp == max_hp) then
            crawl.mpr("<green>Health restored: " .. current_hp .. "</green>")
          end
        end

        --On gaining more than 1 magic
        if (current_mp > previous_mp) then
          --Removes the negative sign
          local mp_inturn = (0 - mp_difference)
          if (mp_inturn > 1) and not (current_mp == max_mp) then
            if current_mp < (max_mp * 0.25) then
              crawl.mpr("<lightcyan>You regained " .. mp_inturn .. " mp,</lightcyan><red> and now have " .. current_mp .. "/" .. max_mp .. " mp.</red>")
            elseif current_mp < (max_mp * 0.50) then
              crawl.mpr("<lightcyan>You regained " .. mp_inturn .. " mp,</lightcyan><yellow> and now have " .. current_mp .. "/" .. max_mp .. " mp.</yellow>")
            else
              crawl.mpr("<lightcyan>You regained " .. mp_inturn .. " mp,</lightcyan><green> and now have " .. current_mp .. "/" .. max_mp .. " mp.</green>")
            end
          end
          if (current_mp == max_mp) then
            crawl.mpr("<lightcyan>MP restored: " .. current_mp .. "</lightcyan>")
          end
        end

        --On losing magic
        if current_mp < previous_mp then
          if current_mp <= (max_mp / 5) then
            crawl.mpr("<lightcyan>You now have </lightcyan><red>" .. current_mp .. "/" ..max_mp .." mp.</red>")
          elseif current_mp <= (max_mp / 2) then
            crawl.mpr("<lightcyan>You now have </lightcyan><yellow>" .. current_mp .. "/" ..max_mp .." mp.</yellow>")
          else
            crawl.mpr("<lightcyan>You now have </lightcyan><green>" .. current_mp .. "/" ..max_mp .." mp.</green>")
          end
        end
      end
    end

    --Set previous hp/mp and form at end of turn
    previous_hp = current_hp
    previous_mp = current_mp
    previous_form = current_form
    was_berserk_last_turn = you_are_berserk
  end


}