Class: SpriteKit::Camera

Inherits:
Object
  • Object
show all
Defined in:
mygame/lib/sprite_kit/camera.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(x: 0, y: 0, target_x: 0, target_y: 0, target_scale: 2, scale: 2, w: nil, h: nil, offset_x: nil, offset_y: nil, path: nil) ⇒ Camera

Returns a new instance of Camera.



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# File 'mygame/lib/sprite_kit/camera.rb', line 9

def initialize(
  x: 0, y: 0,
  target_x: 0, target_y: 0,
  target_scale: 2, scale: 2,
  w: nil, h: nil,
  offset_x: nil, offset_y: nil,
  path: nil
)
  @x = x
  @y = y
  @target_x = target_x
  @target_y = target_y
  @target_scale = target_scale
  @scale = scale

  @w = w
  @h = h
  @offset_x = offset_x
  @offset_y = offset_y
  @path = path
end

Instance Attribute Details

#h ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 35

def h
  @h || viewport_h
end

#offset_x ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 75

def offset_x
  return @offset_x if @offset_x

  # old offset_x functionality when defining an @w
  return (viewport_w - @w / 2) if @w

  if Grid.origin_center?
    0
  else
    Grid.allscreen_x
  end
end

#offset_y ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 88

def offset_y
  return @offset_x if @offset_x

  # old offset_y functionality when defining an @h
  return (viewport_h - @h / 2) if @h

  if Grid.origin_center?
    0
  else
    Grid.allscreen_y
  end
end

#path ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def path
  @path
end

#scale ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def scale
  @scale
end

#target_scale ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def target_scale
  @target_scale
end

#target_x ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def target_x
  @target_x
end

#target_y ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def target_y
  @target_y
end

#w ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 31

def w
  @w || viewport_w
end

#x ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def x
  @x
end

#y ⇒ Object

SCREEN_WIDTH = 1280 SCREEN_HEIGHT = 720



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# File 'mygame/lib/sprite_kit/camera.rb', line 6

def y
  @y
end

Class Method Details

.to_screen_space(camera, rect) ⇒ Object

Parameters:



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# File 'mygame/lib/sprite_kit/camera.rb', line 172

def self.to_screen_space(camera, rect)
  to_screen_space!(camera, rect.merge({}))
end

.to_screen_space!(camera, rect) ⇒ Object

Parameters:



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# File 'mygame/lib/sprite_kit/camera.rb', line 178

def self.to_screen_space!(camera, rect)
  if rect.x
    rect.x = rect.x * camera.scale - camera.x * camera.scale + (camera.half_width)
  end

  if rect.y
    rect.y = rect.y * camera.scale - camera.y * camera.scale + (camera.half_height)
  end

  if rect.w
    rect.w = rect.w * camera.scale
  end

  if rect.h
    rect.h = rect.h * camera.scale
  end

  rect
end

.to_world_space(camera, rect) ⇒ Object

Parameters:



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# File 'mygame/lib/sprite_kit/camera.rb', line 138

def self.to_world_space(camera, rect)
  to_world_space!(camera, rect.merge({}))
end

.to_world_space!(camera, rect) ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 142

def self.to_world_space!(camera, rect)
  if rect.x
    rect.x = (rect.x - (camera.half_width) + camera.x * camera.scale - camera.offset_x) / camera.scale
  end

  if rect.y
    rect.y = (rect.y - (camera.half_height) + camera.y * camera.scale - camera.offset_y) / camera.scale
  end

  if rect.w
    rect.w = rect.w / camera.scale
  end

  if rect.h
    rect.h = rect.h / camera.scale
  end

  rect
end

Instance Method Details

#find_all_intersect_viewport(rects) ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 210

def find_all_intersect_viewport(rects)
  Geometry.find_all_intersect_rect(viewport_world, rects)
end

#half_height ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 45

def half_height
  return @h.fdiv(2).ceil if @h

  viewport_h_half
end

#half_width ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 39

def half_width
  return @w.fdiv(2).ceil if @w

  viewport_w_half
end

#intersect_viewport?(rect) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'mygame/lib/sprite_kit/camera.rb', line 214

def intersect_viewport?(rect)
  viewport_world.intersect_rect?(rect)
end

#reset ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 222

def reset
  @target_x = 0
  @target_y = 0
  @x = 0
  @y = 0
end

#to_a ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 218

def to_a
  viewport.merge!({})
end

#to_screen_space(rect) ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 198

def to_screen_space(rect)
  self.class.to_screen_space(self, rect)
end

#to_screen_space!(rect) ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 202

def to_screen_space!(rect)
  self.class.to_screen_space!(self, rect)
end

#to_world_space(rect) ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 162

def to_world_space(rect)
  self.class.to_world_space(self, rect)
end

#to_world_space!(rect) ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 166

def to_world_space!(rect)
  self.class.to_world_space!(self, rect)
end

#viewport ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 101

def viewport
  if @w && @h
    return {
      x: offset_x,
      y: offset_y,
      w: w,
      h: h,
      path: @path,
      primitive_marker: :sprite
    }
  end

  if Grid.origin_center?
    {
      x: offset_x,
      y: offset_y,
      w: w,
      h: h,
      anchor_x: 0.5,
      anchor_y: 0.5,
      path: @path,
      primitive_marker: :sprite
    }
  else
    {
      x: offset_x,
      y: offset_y,
      w: w,
      h: h,
      path: @path,
      primitive_marker: :sprite
    }
  end
end

#viewport_h ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 51

def viewport_h
  Grid.allscreen_h
end

#viewport_h_half ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 67

def viewport_h_half
  if Grid.origin_center?
    0
  else
    viewport_h.fdiv(2).ceil
  end
end

#viewport_w ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 55

def viewport_w
  Grid.allscreen_w
end

#viewport_w_half ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 59

def viewport_w_half
  if Grid.origin_center?
    0
  else
    viewport_w.fdiv(2).ceil
  end
end

#viewport_world ⇒ Object 



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# File 'mygame/lib/sprite_kit/camera.rb', line 206

def viewport_world
  to_world_space(viewport)
end