Class: Gosling::Sprite

Inherits:
Rect show all
Defined in:
lib/gosling/sprite.rb

Overview

This type of Actor accepts a Gosu::Image to be rendered in place of the standard flat-colored shape. It behaves very much like a Rect, except its width and height are automatically set to the width and height of the image given to it and cannot be modified otherwise. The image can be changed at runtime. Changing this actor’s color or alpha applies tinting and transparency to the image rendered.

Instance Attribute Summary

Attributes inherited from Rect

#height, #width

Attributes inherited from Actor

#are_children_tangible, #are_children_visible, #children, #color, #is_mask, #is_tangible, #is_visible, #parent, #window

Attributes included from Transformable

#rotation

Instance Method Summary collapse

Methods inherited from Polygon

#get_global_vertices, #get_vertices, #is_point_in_bounds, #set_vertices, #set_vertices_rect

Methods inherited from Actor

#add_child, #alpha, #alpha=, #blue, #blue=, #draw, #get_actor_at, #get_actors_at, #get_global_position, #get_global_transform, #green, #green=, #has_child?, #inspect, #is_point_in_bounds, #red, #red=, #remove_child

Methods included from Transformable

#center, #center=, #center_x, #center_x=, #center_y, #center_y=, #reset, #scale, #scale=, #scale_x, #scale_x=, #scale_y, #scale_y=, #to_matrix, transform_point, #transform_point, #translation, #translation=, untransform_point, #untransform_point, #x, #x=, #y, #y=

Constructor Details

#initialize(window) ⇒ Sprite

Returns a new instance of Sprite.



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

def initialize(window)
  super(window)
  @image = nil
  @color = Gosu::Color.rgba(255, 255, 255, 255)
end

Instance Method Details

#get_image ⇒ Object

Returns the image currently assigned to this Sprite.



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

def get_image
  @image
end

#set_image(image) ⇒ Object

Assigns the image to this Sprite, setting its width and height to match the image’s.

Raises:

  • (ArgumentError) 


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# File 'lib/gosling/sprite.rb', line 27

def set_image(image)
  raise ArgumentError.new("Expected Image, but received #{image.inspect}!") unless image.is_a?(Gosu::Image)
  @image = image
  self.width = @image.width
  self.height = @image.height
end