Class: Cursor

Inherits:
Object
  • Object
show all
Defined in:
lib/lib/user_interface/cursor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x, y, map, infopane) ⇒ Cursor

Returns a new instance of Cursor.



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# File 'lib/lib/user_interface/cursor.rb', line 4

def initialize(x, y, map, infopane)
  dir_path = File.dirname(__FILE__)

  @x = x
  @y = y
  @map = map
  @infopane = infopane

  @image = Gosu::Image.new(dir_path + '/../../media/cursor.png')
  @freeroam = false
  @info_stopped = false
end

Instance Attribute Details

#freeroam ⇒ Object

Returns the value of attribute freeroam.



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# File 'lib/lib/user_interface/cursor.rb', line 2

def freeroam
  @freeroam
end

#info_stopped ⇒ Object

Returns the value of attribute info_stopped.



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# File 'lib/lib/user_interface/cursor.rb', line 2

def info_stopped
  @info_stopped
end

#unit ⇒ Object

Returns the value of attribute unit.



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# File 'lib/lib/user_interface/cursor.rb', line 2

def unit
  @unit
end

#x ⇒ Object

Returns the value of attribute x.



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# File 'lib/lib/user_interface/cursor.rb', line 2

def x
  @x
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/lib/user_interface/cursor.rb', line 2

def y
  @y
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/lib/user_interface/cursor.rb', line 58

def draw
  @image.draw(@x * TILESIZE, (@y + 1) * TILESIZE, ZCURSOR)
end

#info ⇒ Object

Find some info about units on the current tile



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# File 'lib/lib/user_interface/cursor.rb', line 146

def info
  if freeroam
    uu = @map.get_unit(@x, @y)
  else
    if !@unit
      abort("cursor.info(): Cursor is in locked mode but there is no unit it is locked to (at #{@x} - #{@y})")
    end
    uu = @unit
  end

  if uu
    @infopane.text = uu.info
    puts uu.info

    if uu.is_transporting?
      uu.cargo.each { |uu| puts '- cargo: ' + uu.info }
    end
  else
    @infopane.text = ''
    puts 'nothing here'
  end
end

#move!(xx, yy) ⇒ Object

Move by given change of coordinates



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# File 'lib/lib/user_interface/cursor.rb', line 70

def move!(xx, yy)
  if freeroam
    @x += xx
    @y += yy
    @unit = @map.get_unit(@x, @y)
    return
  end

  # If in locked mode
  if !@unit
    abort("cursor.move!(): Cursor is in locked mode but there is no unit it is locked to (at #{@x} - #{@y})")
  end

  @unit.x += xx
  @unit.y += yy
  @unit.check_movement(@x, @y) # cursor coordinates work like old_x, old_y

  uu = @map.get_unit(@unit.x, @unit.y)
  if !uu # it got destroyed
    @unit = nil # clear the last links so that (object of) given unit can be truly destroyed
    return
  end

  warp_to!(@unit) # whether it moved or not, unless it got destroyed
end

#set_function_to_unit(func) ⇒ Object

Tries to set function <func> to currently selected unit



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# File 'lib/lib/user_interface/cursor.rb', line 97

def set_function_to_unit(func)
    if freeroam
      uu = @map.get_unit(@x, @y)
    else # in locked mode
      if !@unit
        abort("cursor.set_function_to_unit(): Cursor is in locked mode but there is no unit it is locked to (at #{@x} - #{@y})")
      end
      uu = @unit
    end

    uu.set_function!(func) unless !uu
end

#switch_freeroam! ⇒ Object

Switch between being attached to unit and being able to freeroam



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# File 'lib/lib/user_interface/cursor.rb', line 131

def switch_freeroam!
  if freeroam
    @infopane.text = 'freeroam disabled'
    puts 'freeroam disabled'
    @freeroam = false
    to_next_unit!
  else
    @infopane.text = 'freeroam enabled'
    puts 'freeroam enabled'
    @freeroam = true
    @unit = nil
  end
end

#to_next_unit! ⇒ Object

Find next unit to target with cursor



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# File 'lib/lib/user_interface/cursor.rb', line 111

def to_next_unit!
  unless @unit && @unit.can_move? && @unit.function == FUNCNONE # unless the current one is still movable
    movable_units = @map.all_units.select { |uu| uu.can_move? && uu.function == FUNCNONE}

    # If there are no more movable units without function, switch to freeroam mode
    if movable_units.size <= 0 # == would be enough
      puts 'all movable units without functions moved'

      switch_freeroam!
      return
    end

    @unit = movable_units[0] # newly selected one
  end

  warp_to!(@unit) # stay at old or go to new
  info unless @info_stopped # due to switching out of the play game state
end

#update(button) ⇒ Object 



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# File 'lib/lib/user_interface/cursor.rb', line 17

def update(button)
  case button
  # Cardinal directions
  when Gosu::KbLeft, Gosu::KbA, Gosu::KB_NUMPAD_4 then
    move!(-1, 0) unless @x <= 0
  when Gosu::KbRight, Gosu::KbD, Gosu::KB_NUMPAD_6 then
    move!(1, 0) unless @x >= MAPX
  when Gosu::KbUp, Gosu::KbW, Gosu::KB_NUMPAD_8 then
    move!(0, -1) unless @y <= 0
  when Gosu::KbDown, Gosu::KbX, Gosu::KB_NUMPAD_2 then
    move!(0, 1) unless @y >= MAPY

  # Intercardinal directions
  when Gosu::KbQ, Gosu::KB_NUMPAD_7 then
    move!(-1, -1) unless @x <= 0 || @y <= 0
  when Gosu::KbE, Gosu::KB_NUMPAD_9 then
    move!(1, -1) unless @x >= MAPX || @y <= 0
  when Gosu::KbZ, Gosu::KB_NUMPAD_1 then
    move!(-1, 1) unless @x <= 0 || @y >= MAPY
  when Gosu::KbC, Gosu::KB_NUMPAD_3 then
    move!(1, 1) unless @x >= MAPX || @y >= MAPY

  # Functions
  when Gosu::KbS then
    set_function_to_unit(FUNCSENTRY)
  when Gosu::KbB then
    set_function_to_unit(FUNCBUILD)
   when Gosu::KbN then
    set_function_to_unit(FUNCNONE)

  # The rest
  when Gosu::KbJ, Gosu::KB_NUMPAD_0 then
    switch_freeroam!
  when Gosu::KbReturn, Gosu::KB_NUMPAD_5 then
    info
  end

  # If in locked mode, stay at current/jump to next movable unit
  to_next_unit! unless freeroam
end

#warp_to!(uu) ⇒ Object

Move to coordinates of given unit



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# File 'lib/lib/user_interface/cursor.rb', line 63

def warp_to!(uu)
  @x = uu.x
  @y = uu.y
  @unit = uu
end