Class: RedBird::UIBox

Inherits:
Entity
  • Object
show all
Defined in:
lib/red_bird/uibox.rb

Overview

User Interface Box works as a visual background for texts, menus, or anything else.

Author:

  • Frederico Linhares

Defined Under Namespace

Classes: Style

Instance Attribute Summary

Attributes inherited from Entity

#pos_x, #pos_y, #priority

Instance Method Summary collapse

Methods inherited from Entity

#cursor_down, #cursor_hover, #cursor_up, #tick

Constructor Details

#initialize(style, pos_x, pos_y, num_vertical_sprites, num_horizontal_sprites) ⇒ UIBox

Returns a new instance of UIBox.

Parameters:

  • style (RedBird::Style)
  • pos_x (Integer)
  • pos_y (Integer)
  • num_vertical_sprites (Integer) —

    number of sprites rows.

  • num_horizontal_sprites (Integer) —

    number of sprites columns.

Author:

  • Frederico Linhares



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# File 'lib/red_bird/uibox.rb', line 76

def initialize(style, pos_x, pos_y, num_vertical_sprites,
               num_horizontal_sprites)
  @style = style
  @pos_x = pos_x
  @pos_y = pos_y
  @num_vertical_sprites = num_vertical_sprites
  @num_horizontal_sprites = num_horizontal_sprites
end

Instance Method Details

#height ⇒ Integer

The height is defined by num_vertical_sprites plus two (the borders). The height of each sprite is defined by the style used.

Returns:

  • (Integer)

Author:

  • Frederico Linhares



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# File 'lib/red_bird/uibox.rb', line 99

def height
  @style.sprite_height * (@num_vertical_sprites + 2)
end

#render ⇒ Object

Renders to the screen.

Author:

  • Frederico Linhares



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# File 'lib/red_bird/uibox.rb', line 106

def render
  Render.set_color(@style.bg_color)
  Render.fill_rect(@pos_x, @pos_y, self.width, self.height)

  # Draw the corners.
  @style.sprites[:box_top_left].render_to_screen(@pos_x, @pos_y)
  @style.sprites[:box_top_right].render_to_screen(
    @style.sprite_width * (@num_horizontal_sprites + 1) + @pos_x,
    @pos_y)
  @style.sprites[:box_bottom_left].render_to_screen(
    @pos_x,
    @style.sprite_height * (@num_vertical_sprites + 1) + @pos_y)
  @style.sprites[:box_bottom_right].render_to_screen(
    @style.sprite_width * (@num_horizontal_sprites + 1) + @pos_x,
    @style.sprite_height * (@num_vertical_sprites + 1) + @pos_y)

  # Draw the edges.
  @num_horizontal_sprites.times do |i|
    # Top
    @style.sprites[:box_top].render_to_screen(
      @style.sprite_width * (i + 1) + @pos_x, @pos_y)
    # Bottom
    @style.sprites[:box_bottom].render_to_screen(
      @style.sprite_width * (i + 1) + @pos_x,
      @style.sprite_height * (@num_vertical_sprites + 1) + @pos_y)
  end
  @num_vertical_sprites.times do |i|
    # Left
    @style.sprites[:box_left].render_to_screen(
      @pos_x, @style.sprite_height * (i + 1) + @pos_y)
    # Right
    @style.sprites[:box_right].render_to_screen(
      @style.sprite_width * (@num_horizontal_sprites + 1) + @pos_x,
      @style.sprite_height * (i + 1) + @pos_y)
  end
end

#width ⇒ Integer

The height is defined by num_horizontal_sprites plus two (the borders). The width of each sprite is defined by the style used.

Returns:

  • (Integer)

Author:

  • Frederico Linhares



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# File 'lib/red_bird/uibox.rb', line 90

def width
  @style.sprite_width * (@num_horizontal_sprites + 2)
end