Method: MiniGL::GameObject#initialize

Defined in:
lib/minigl/game_object.rb

#initialize(x, y, w, h, img, img_gap = nil, sprite_cols = nil, sprite_rows = nil, mass = 1.0, retro = nil) ⇒ GameObject

Creates a new game object.

Parameters:

x

The x-coordinate of the object’s bounding box. This can be modified later via the x attribute.

y

The y-coordinate of the object’s bounding box. This can be modified later via the y attribute.

w

The width of the object’s bounding box.

h

The height of the object’s bounding box.

img

The image or spritesheet for the object.

img_gap

A Vector object representing the difference between the top left corner of the bounding box and the coordinates of the image. For example, an object with x = 100, y = 50 and img_gap = Vector.new(-5, -5) will be drawn at position (95, 45) of the screen.

sprite_cols

The number of columns in the spritesheet. Use nil if the image is not a spritesheet.

sprite_rows

The number of rows in the spritesheet. Use nil if the image is not a spritesheet.

mass

The mass of the object. Details on how it is used can be found in the Movement module.



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# File 'lib/minigl/game_object.rb', line 216

def initialize(x, y, w, h, img, img_gap = nil, sprite_cols = nil, sprite_rows = nil, mass = 1.0, retro = nil)
  super x, y, img, sprite_cols, sprite_rows, retro
  @w = w; @h = h
  @img_gap =
    if img_gap.nil?
      Vector.new 0, 0
    else
      img_gap
    end
  @mass = mass
  @speed = Vector.new 0, 0
  @max_speed = Vector.new 15, 15
  @stored_forces = Vector.new 0, 0
end