Module: GameMechanics

Defined in:
lib/game_mechanics.rb

Constant Summary collapse

@@save_file = 
'../lib/save_game.json'

Instance Method Summary collapse

Instance Method Details

#bar_low ⇒ Object 



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# File 'lib/game_mechanics.rb', line 106

def bar_low
  "-"*61
end

#bar_top ⇒ Object 



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# File 'lib/game_mechanics.rb', line 98

def bar_top
  "_"*27 + " " + "STATS" + " " + "_"*27
end

#combat(bad_guy) ⇒ Object 



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# File 'lib/game_mechanics.rb', line 133

def combat bad_guy
  # create an opponent
  @bad_guy = bad_guy.new
  # scale power of opponent to level of player
  @bad_guy.cur_hp       = @bad_guy.hp*@player.lvl
  @bad_guy.cur_mana     = @bad_guy.mana*@player.lvl
  @bad_guy.dmg          = @bad_guy.dmg*@player.lvl
  puts @bad_guy.name + " says, you kill my father, now you will die!!" unless (@bad_guy.name == "Giant Rat" or @bad_guy.name == "Skeleton")
  move = 0
  until move == "2"
    begin
      @heal = false
      puts # formatting
      puts bar_low + "--"
      puts " #{@player.name} - HP: #{@player.cur_hp} - Mana: #{@player.cur_mana} |".green + " - VS - " + "| #{@bad_guy.name} - HP: #{@bad_guy.cur_hp} - Mana: #{@bad_guy.cur_mana}".red
      puts bar_low + "--"
      puts # formatting
      choice_opts = {
        "1" => "Attack.",
        "2" => "Run."
      }
      choice_opts["3"] = "Cast Heal and Attack." if @player.class.to_s == "Cleric"
      c = Choice.new "#{@bad_guy.name} vs. #{@player.name}, what will you do?", choice_opts
      move = c.prompt
      move = "4" if move == "3" and @player.class.to_s != "Cleric"
    end while not (move == "1" or move == "2" or move == "3")
    @heal = true if move == "3" # set cleric heal flag to true
    move = "1" if move == "3" # now that flag is set, set move to 1 for the attack part
    case
    when move == "1"
      puts # formatting
      if @player.class.to_s == "Knight"
        puts "#{@player.name} swings the mighty sword at the #{@bad_guy.name}!"
        puts # formatting
        dmg_mod = (@player.str-10)/2 # knights use their str for damage mod
        @dmg_dlt = dice(@player.dmg) + dmg_mod
      elsif @player.class.to_s == "Wizard"
        begin
          choice_opts = { "1" => "one dart" }
          choice_opts["2"] = "two darts"   if @player.cur_mana - 2*@player.lvl >= 0
          choice_opts["3"] = "three darts" if @player.cur_mana - 3*@player.lvl >= 0
          c = Choice.new "How many magic darts will you shoot?", choice_opts
          darts = c.prompt.to_i
          darts = 4 if darts == 2 and @player.cur_mana - 2*@player.lvl < 0
          darts = 4 if darts == 3 and @player.cur_mana - 3*@player.lvl < 0
        end while not (darts == 1 or darts == 2 or darts == 3)
        puts # formatting
        puts "#{@player.name} conjures #{darts} magic dart that zips toward the #{@bad_guy.name}." if darts == 1
        puts "#{@player.name} conjures #{darts} magic darts that zip toward the #{@bad_guy.name}." if darts > 1
        dmg_mod = (@player.int-10)/2 # wizards use their int for damage mod
        @dmg_dlt = dice(@player.dmg) + darts*@player.lvl + dmg_mod# more darts more damage, scales with level
        @player.cur_mana = @player.cur_mana - darts*@player.lvl # more darts more mana spent, scales with level
        # prevent negative mana, but always allow wizard to shoot at least one dart, no matter what
        @player.cur_mana = 0 if @player.cur_mana < 0
      elsif @player.class.to_s == "Cleric"
        if @heal == true
          heal_bonus = 0
          if @player.cur_mana - @player.lvl*2 >= 0
            heal_bonus = dice(4)*@player.lvl
            @player.cur_mana = @player.cur_mana - @player.lvl*2
          end
          @heal_amount = dice(2)*@player.lvl + heal_bonus + 1 # testing with the +1, what I am going for here
                                                              # is to balance the heal with their lower damage and hp
          puts "Praying intently, you add " + "#{@heal_amount}".green + " health points as you prepare to strike."
          @player.cur_hp = @player.cur_hp + @heal_amount
          puts "#{@player.name}, any health points above your normal maximum will fade after combat." if @player.cur_hp > @player.hp
          puts # formatting
        end
        puts "#{@player.name} brings the holy mace thundering down upon #{@bad_guy.name}!"
        puts # formatting
        dmg_mod = (@player.str-10)/2 # clerics use their str for damage mod
        @dmg_dlt = dice(@player.dmg) + dmg_mod
      elsif @player.class.to_s == "Rogue"
        puts "#{@player.name} whirls the razor daggers and strikes at #{@bad_guy.name}!"
        puts # formatting
        dmg_mod = (@player.str-10)/2 + (@player.agi-10)/2 # rogues use their str AND agi for damage mod to help
        @dmg_dlt = dice(@player.dmg) + dmg_mod            # make up for lower armor and health points
      end
      miss_chance = dice(100)
      agi_boost = (@bad_guy.agi-10)*2 + @bad_guy.dodge
      if (1..agi_boost).include?(miss_chance)
        puts # formatting
        puts @bad_guy.name + " jumps out of the way, avoiding being hit by " + @player.name + "!"
        puts # formatting
      else
        @dmg_dlt = @dmg_dlt - @bad_guy.armor/4
        @dmg_dlt = 0 if @dmg_dlt < 1
        puts #formatting
        puts "You deal " + "#{@dmg_dlt}".green + " damage to the #{@bad_guy.name}." unless @dmg_dlt < 1
        puts # formatting
        @bad_guy.cur_hp = @bad_guy.cur_hp - @dmg_dlt
      end
      if @bad_guy.cur_hp <= 0
        puts "You have slain the #{@bad_guy.name} and won the day!"
        # rewards for winning the battle!
        @player.xp = @player.xp + @bad_guy.xp
        if @player.class.to_s == "Rogue"
          @player.coin = @player.coin + @bad_guy.coin + @player.lvl # rogues get bonus cash
        else
          @player.coin = @player.coin + @bad_guy.coin
        end
        @player.cur_hp = @player.hp if @player.cur_hp > @player.hp # this is done to remove extra hp from cleric
        save_data
        return
      else
        puts "#{@bad_guy.name} viciously attacks #{@player.name}!"
        puts # formatting
        miss_chance = dice(100)
        agi_boost = (@player.agi-10)*2 + @player.dodge
        if (1..agi_boost).include?(miss_chance)
          puts @player.name + " totally leaps out of the way, avoiding being hit by " + @bad_guy.name + "!"
        else
          dmg_taken = dice(@bad_guy.dmg) - @player.armor/4
          if @player.class.to_s == "Wizard" and @player.spell_buff == true and dmg_taken > 1
            draco_helps = @player.lvl + @player.lvl/2 # Trying a bump in mitigation as Wizard is squishy!
            dmg_taken = dmg_taken - draco_helps
            puts "Draco helps shield you absorbing some of the potential damage."
            puts # formatting
          end
          dmg_taken = 0 if dmg_taken < 1
          @player.cur_hp = @player.cur_hp - dmg_taken
          if dmg_taken > 0
            puts "#{@bad_guy.name} hits YOU for " + "#{dmg_taken}".red + " damage!"
            puts "OUCH!"
          else
            puts "You deflect the blow and take no damage."
          end
        end
        puts #formatting
      end
      if @player.cur_hp <= 0
        puts "You were killed by the #{@bad_guy.name}."
        puts "Killed dead."
        player_croaks
      end
    when move == "2"
      puts # formatting
      puts "Sometimes the right thing to do is run."
      puts "This is one of those times."
      puts # formatting
      puts "You shout what is that? and point frantically in the opposite direction."
      puts "The #{@bad_guy.name} turns to look and you high tail it away!"
      puts # formatting
      run_away = dice(10)
      run_away = dice(15) if @player.class.to_s == "Rogue" # rogues have a higher chance of getting away
      case
      when (1..8).include?(run_away)
        # you got away this time
        puts "You escape from the #{@bad_guy.name} while it foolishly looks away."
      when (9..10).include?(run_away)
        # not so lucky this time
        puts "#{@bad_guy.name} says, do you think I was spawned yesterday?"
        puts # formatting
        puts "#{@bad_guy.name} viciously attacks #{@player.name}!"
        puts # formatting
        miss_chance = dice(100)
        agi_boost = (@player.agi-10)*2 + @player.dodge
        if (1..agi_boost).include?(miss_chance)
          puts @player.name + " totally leaps out of the way, avoiding being hit by " + @bad_guy.name + "!"
        else
          dmg_taken = dice(@bad_guy.dmg) - @player.armor/4
          dmg_taken = 0 if dmg_taken < 1
          @player.cur_hp = @player.cur_hp - dmg_taken
          puts "#{@bad_guy.name} hits YOU for " + "#{dmg_taken}".red + " damage!" unless dmg_taken < 1
          puts "OUCH!" unless dmg_taken < 1
        end
        puts #formatting
        if @player.cur_hp <= 0
          puts "You knew when to fold em, but the #{@bad_guy.name} got the better of you anyway."
          player_croaks
        end
        puts "You manage to accidentally stick a boot firmly in the #{@bad_guy.name}'s face"
        puts "allowing you to escape!"
        puts # formatting
      when (11..15).include?(run_away)
        # only a rogue could be so lucky
        puts "Ah, the life of a rogue, so free, so evasive!"
        puts "#{@player.name}, using your roguish powers you slip away unseen, leaving"
        puts "#{@bad_guy.name} cursing and muttering in the dark."
      end
      save_data
      return
    end
  end

end

#dice(sides = 6, &block) ⇒ Object 



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# File 'lib/game_mechanics.rb', line 320

def dice(sides=6,&block)
  if block_given?
    block.call(rand(1..sides))
  else
    rand(1..sides)
  end
end

#is_even?(x) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/game_mechanics.rb', line 110

def is_even?(x)
  x % 2 == 0 ? true : false
end

#load_data ⇒ Object 



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# File 'lib/game_mechanics.rb', line 58

def load_data
  load_info = JSON.parse(File.read(@@save_file))
  role = load_info['role']
  if role == "Knight"
    @player = Knight.new
  elsif role == "Wizard"
    @player = Wizard.new
  elsif role == "Cleric"
    @player = Cleric.new
  elsif role == "Rogue"
    @player = Rogue.new
  end
  # Set stats based off information in load_info
  @player.lvl        = load_info['lvl']
  @player.xp         = load_info['xp']
  @player.coin       = load_info['coin']
  @player.name       = load_info['name']
  @player.cur_hp     = load_info['cur_hp']
  @player.cur_mana   = load_info['cur_mana']
  @player.buff_food  = load_info['buff_food']
  @player.buff_drink = load_info['buff_drink']
  @player.spell_buff = load_info['spell_buff']
  # Adjust stats based off of player level
  @player.hp       = @player.hp*@player.lvl
  @player.mana     = @player.mana*@player.lvl
  @player.dmg      = @player.dmg*@player.lvl
  @player
  # I was trying to do the above assignments with iteration, there has to be a way!
#    load_info.each do |attribute, value|
#      @player.#{attribute} = value unless attribute == "role"
#    end
end

#player_croaks ⇒ Object 



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# File 'lib/game_mechanics.rb', line 114

def player_croaks
  puts # formatting
  if @player.class.to_s == "Wizard" and @player.spell_buff == true
    puts "A single tear falls from Draco as he fades away..."
    puts #formatting
    @player.spell_buff = false
  end
  puts "It happens to the best of us #{@player.name}."
  puts "Fortunately for you, the game of Destiny never ends."
  puts "The game will exit now and you can restart in town."
  puts # formatting
  puts "Better luck next time, eh?"
  @player.buff_food = false
  @player.buff_drink = false
  @player.cur_hp = @player.hp/2
  save_data
  exit
end

#prompt ⇒ Object 



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# File 'lib/game_mechanics.rb', line 5

def prompt
  print ">> "
end

#random_encounter ⇒ Object 



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# File 'lib/game_mechanics.rb', line 328

def random_encounter
  chance = dice(20)
  case
  when (1..2).include?(chance)
    puts # formatting
    puts "You get the feeling you are being watched..."
    puts # formatting
  when (3..4).include?(chance)
    puts # formatting
    puts "You notice a coin stuck in the dirt, pry it"
    puts "loose, and place the coin in your wallet."
    puts # formatting
    puts "Today must be your lucky day, #{@player.name}!"
    @player.xp = @player.xp + @player.lvl*100
    @player.coin = @player.coin + @player.lvl*2
    puts # formatting
  when (5..8).include?(chance)
    puts #format
    puts "A small goblin springs from the shadows and attacks!!"
    puts #format
    combat(Goblin)
  when (9..11).include?(chance)
    puts #format
    puts "You hear squeeking sounds. BIG squeeking sounds!"
    puts #format
    combat(GiantRat)
  when (12..15).include?(chance)
    puts #format
    puts "A kobold peers out of a hole in the wall and then snarls."
    puts #format
    combat(Kobold)
  when (16..18).include?(chance)
    puts #format
    puts "There is a sudden chill in the air and you hear scraping sounds."
    puts "You know without a doubt what approaches..."
    puts #format
    combat(Skeleton)
  when (19..20).include?(chance)
    puts # formatting
    trip_event = dice(3)
    trip_part = "knee" if trip_event == 1
    trip_part = "elbow" if trip_event == 2
    trip_part = "hands" if trip_event == 3
    trip_damage = @player.lvl
    puts "You stumble and scrape your #{trip_part}."
    puts "You take #{trip_damage} damage."
    puts # formatting
    @player.cur_hp = @player.cur_hp - trip_damage
    if @player.cur_hp <= 0
      puts "You have tripped and died."
      player_croaks
    end
    save_data
  end
end

#restore_player ⇒ Object 



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# File 'lib/game_mechanics.rb', line 91

def restore_player
  # heal the player when they choose to rest in the tavern
  @player.cur_hp   = @player.hp
  @player.cur_mana = @player.mana
  save_data
end

#save_data ⇒ Object 



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# File 'lib/game_mechanics.rb', line 17

def save_data
  # increase level as player gets more xp!
  case
  when (0..1000).include?(@player.xp)
    @player.lvl = 1
  when (1001..2500).include?(@player.xp)
    @player.lvl = 2
  when (2501..5000).include?(@player.xp)
    @player.lvl = 3
  when (5001..8000).include?(@player.xp)
    @player.lvl = 4
  when (8001..11500).include?(@player.xp)
    @player.lvl = 5
  when (11501..15000).include?(@player.xp)
    @player.lvl = 6
  when (15001..19000).include?(@player.xp)
    @player.lvl = 7
  when (19001..24000).include?(@player.xp)
    @player.lvl = 8
  when (24001..29000).include?(@player.xp)
    @player.lvl = 9
  when @player.xp > 29000
    @player.lvl = 10
  end
  save_info = {
    role:       @player.class,
    cur_hp:     @player.cur_hp,
    cur_mana:   @player.cur_mana,
    xp:         @player.xp,
    lvl:        @player.lvl,
    coin:       @player.coin,
    buff_food:  @player.buff_food,
    buff_drink: @player.buff_drink,
    spell_buff: @player.spell_buff,
    name:       @player.name
  }
  File.open(@@save_file, "w") do |f|
    f.write(save_info.to_json)
  end
end

#stat_bar(name, xp, lvl, coin, cur_hp, cur_mana) ⇒ Object 



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# File 'lib/game_mechanics.rb', line 102

def stat_bar name, xp, lvl, coin, cur_hp, cur_mana
  "  Name: " + "#{name}" + " | XP: #{xp} | Lvl: #{lvl} | Coin: #{coin} | HP: #{cur_hp} | Mana: #{cur_mana}"
end

#yes_no ⇒ Object 



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# File 'lib/game_mechanics.rb', line 9

def yes_no
  #restrict input to valid answers, but don't worry about case
  begin
    puts "Please enter [yes] or [no]:"
    prompt; @yes_no = STDIN.gets.chomp.downcase
  end while not (@yes_no == "yes" or @yes_no == "no")
end