Class: DXRubySDL::Sprite

Inherits:
Object
  • Object
show all
Defined in:
lib/dxruby_sdl/sprite.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x = 0, y = 0, image = nil) ⇒ Sprite

Returns a new instance of Sprite.



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# File 'lib/dxruby_sdl/sprite.rb', line 84

def initialize(x = 0, y = 0, image = nil)
  @x = x
  @y = y
  @image = image

  @collision_enable = true
  @collision_sync = true
  @visible = true
  @vanished = false

  calc_center
end

Instance Attribute Details

#alpha ⇒ Object

Returns the value of attribute alpha.



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# File 'lib/dxruby_sdl/sprite.rb', line 14

def alpha
  @alpha
end

#angle ⇒ Object

Returns the value of attribute angle.



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# File 'lib/dxruby_sdl/sprite.rb', line 9

def angle
  @angle
end

#blend ⇒ Object

Returns the value of attribute blend.



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# File 'lib/dxruby_sdl/sprite.rb', line 15

def blend
  @blend
end

#center_x ⇒ Object

Returns the value of attribute center_x.



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# File 'lib/dxruby_sdl/sprite.rb', line 12

def center_x
  @center_x
end

#center_y ⇒ Object

Returns the value of attribute center_y.



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# File 'lib/dxruby_sdl/sprite.rb', line 13

def center_y
  @center_y
end

#collision ⇒ Object

Returns the value of attribute collision.



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# File 'lib/dxruby_sdl/sprite.rb', line 18

def collision
  @collision
end

#collision_enable ⇒ Object

Returns the value of attribute collision_enable.



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# File 'lib/dxruby_sdl/sprite.rb', line 19

def collision_enable
  @collision_enable
end

#collision_sync ⇒ Object

Returns the value of attribute collision_sync.



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# File 'lib/dxruby_sdl/sprite.rb', line 20

def collision_sync
  @collision_sync
end

#image ⇒ Object

Returns the value of attribute image.



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# File 'lib/dxruby_sdl/sprite.rb', line 7

def image
  @image
end

#scale_x ⇒ Object

Returns the value of attribute scale_x.



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# File 'lib/dxruby_sdl/sprite.rb', line 10

def scale_x
  @scale_x
end

#scale_y ⇒ Object

Returns the value of attribute scale_y.



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# File 'lib/dxruby_sdl/sprite.rb', line 11

def scale_y
  @scale_y
end

#shader ⇒ Object

Returns the value of attribute shader.



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# File 'lib/dxruby_sdl/sprite.rb', line 16

def shader
  @shader
end

#target ⇒ Object

Returns the value of attribute target.



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# File 'lib/dxruby_sdl/sprite.rb', line 17

def target
  @target
end

#visible ⇒ Object

Returns the value of attribute visible.



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# File 'lib/dxruby_sdl/sprite.rb', line 21

def visible
  @visible
end

#x ⇒ Object

Returns the value of attribute x.



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# File 'lib/dxruby_sdl/sprite.rb', line 5

def x
  @x
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/dxruby_sdl/sprite.rb', line 6

def y
  @y
end

#z ⇒ Object

Returns the value of attribute z.



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# File 'lib/dxruby_sdl/sprite.rb', line 8

def z
  @z
end

Class Method Details

.check(o_sprites, d_sprites, shot = :shot, hit = :hit) ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 24

def check(o_sprites, d_sprites, shot = :shot, hit = :hit)
  res = false
  o_sprites = [o_sprites].flatten.select { |s| s.is_a?(self) }
  d_sprites = [d_sprites].flatten.select { |s| s.is_a?(self) }
  discards = []
  o_sprites.each do |o_sprite|
    if discards.include?(o_sprite)
      next
    end
    d_sprites.each do |d_sprite|
      if discards.include?(o_sprite)
        break
      end
      if discards.include?(d_sprite)
        next
      end
      if o_sprite === d_sprite
        res = true
        discard = false
        if o_sprite.respond_to?(shot) && shot
          if o_sprite.send(shot, d_sprite) == :discard
            discard = true
          end
        end
        if d_sprite.respond_to?(hit) && hit
          if d_sprite.send(hit, o_sprite) == :discard
            discard = true
          end
        end
        if discard
          discards << o_sprite
          discards << d_sprite
        end
      end
    end
  end
  return res
end

.clean(sprites) ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 79

def clean(sprites)
  return [sprites].flatten.compact.reject(&:vanished?)
end

.draw(sprites) ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 71

def draw(sprites)
  sprites.flatten.each do |s|
    if s.respond_to?(:draw)
      s.draw
    end
  end
end

.update(sprites) ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 63

def update(sprites)
  sprites.flatten.each do |s|
    if s.respond_to?(:update)
      s.update
    end
  end
end

Instance Method Details

#===(other) ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 130

def ===(other)
  if !@collision_enable || vanished? ||
      !other.collision_enable || other.vanished? ||
      !other.image && !other.collision
    return false
  end
  if @collision_enable && @collision
    x, y, width, height =
      @collision[0] + @x, @collision[1] + @y, @collision[2], @collision[3]
  else
    x, y, width, height =
      @x, @y, @image.width, @image.height
  end
  if other.collision_enable && other.collision
    other_x, other_y, other_width, other_height =
      other.collision
  else
    other_x, other_y, other_width, other_height =
      other.x, other.y, other.image.width, other.image.height
  end
  return other_x + other_width > x && other_x < x + width &&
    other_y + other_height > y && other_y < y + height
end

#check(sprites) ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 154

def check(sprites)
  return [sprites].flatten.select { |s| self === s }
end

#draw ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 102

def draw
  if !@visible || vanished?
    return
  end
  [:target, :blend, :shader].each do |method|
    if send(method)
      raise NotImplementedError, "Sprite#draw with #{method}"
    end
  end
  options = {}
  if angle
    options[:angle] = angle
  end
  if scale_x
    options[:scale_x] = scale_x
  end
  if scale_y
    options[:scale_y] = scale_y
  end
  if center_x
    options[:center_x] = center_x
  end
  if center_y
    options[:center_y] = center_y
  end
  Window.draw_ex(x, y, image, options)
end

#vanish ⇒ Object 



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# File 'lib/dxruby_sdl/sprite.rb', line 158

def vanish
  @vanished = true
end

#vanished? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dxruby_sdl/sprite.rb', line 162

def vanished?
  return @vanished
end