Module: DXOpal::Window

Defined in:
lib/dxopal/window.rb

Constant Summary collapse

@@fps = 
60
@@fps_ts = 
nil
@@fps_ct = 
0
@@real_fps = 
0
@@real_fps_ct = 
1
@@real_fps_t = 
Time.now
@@width = 
640
@@height = 
480
@@block = 
nil
@@paused = 
false
@@bgcolor = 
Constants::Colors::C_BLACK

Class Method Summary collapse

Class Method Details

._img ⇒ Object

Return internal DXOpal::Image object (for experimental/hacking use)



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# File 'lib/dxopal/window.rb', line 127

def self._img; @@img; end

._init ⇒ Object 



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# File 'lib/dxopal/window.rb', line 116

def self._init
  canvas = `document.getElementById("dxopal-canvas")`
  # If user did not change Window.width/Window.height, set the canvas size here
  self.width = @@width
  self.height = @@height
  img = Image.new(self.width, self.height, canvas: canvas)
  Input._init(canvas)
  return img
end

._loop(timestamp) ⇒ Object

(internal) call @@block periodically



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# File 'lib/dxopal/window.rb', line 52

def self._loop(timestamp)
  @@img ||= _init

  # Calculate fps
  frame_msec = 1000.0 / @@fps
  @@fps_ts ||= timestamp
  passed_msec = timestamp - @@fps_ts
  @@fps_ts = timestamp
  @@fps_ct += passed_msec
  if @@fps_ct >= frame_msec
    @@fps_ct -= frame_msec
  else
    `window`.JS.requestAnimationFrame{|time| _loop(time) }
    return
  end

  # Calculate real_fps
  t = Time.now
  if t - @@real_fps_t >= 1.0
    @@real_fps = @@real_fps_ct
    @@real_fps_ct = 1
    @@real_fps_t = t
  else
    @@real_fps_ct += 1
  end

  # Update physics
  Sprite.matter_tick(timestamp) if Sprite.matter_enabled?

  # Detect inputs
  Input._on_tick

  # Call user code
  @@draw_queue = []
  if @@paused
    Window.draw_pause_screen
  else
    DXOpal.dump_error(&@@block)
  end

  # Draw
  @@img.box_fill(0, 0, @@width, @@height, @@bgcolor)
  sorted = @@draw_queue.sort{|a, b| a[0] == b[0] ? a[1] <=> b[1] : a[0] <=> b[0] }
  sorted.each do |item|
    case item[2]
    when :image then @@img.draw(*item.drop(3))
    when :image_rot then @@img.draw_rot(*item.drop(3))
    when :image_scale then @@img.draw_scale(*item.drop(3))
    when :draw_ex then @@img.draw_ex(*item.drop(3))
    when :font then @@img.draw_font(*item.drop(3)) 
    when :pixel then @@img.[]=(*item.drop(3))
    when :line then @@img.line(*item.drop(3))
    when :box then @@img.box(*item.drop(3))
    when :box_fill then @@img.box_fill(*item.drop(3))
    when :circle then @@img.circle(*item.drop(3))
    when :circle_fill then @@img.circle_fill(*item.drop(3))
    when :triangle then @@img.triangle(*item.drop(3))
    when :triangle_fill then @@img.triangle_fill(*item.drop(3))
    end
  end

  `window`.JS.requestAnimationFrame{|time| _loop(time) }
end

.bgcolor ⇒ Object 



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# File 'lib/dxopal/window.rb', line 151

def self.bgcolor; @@bgcolor; end

.bgcolor=(col) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 152

def self.bgcolor=(col); @@bgcolor = col; end

.draw(x, y, image, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 154

def self.draw(x, y, image, z=0)
  enqueue_draw(z, :image, x, y, image)
end

.draw_box(x1, y1, x2, y2, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 184

def self.draw_box(x1, y1, x2, y2, color, z=0)
  enqueue_draw(z, :box, x1, y1, x2, y2, color)
end

.draw_box_fill(x1, y1, x2, y2, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 188

def self.draw_box_fill(x1, y1, x2, y2, color, z=0)
  enqueue_draw(z, :box_fill, x1, y1, x2, y2, color)
end

.draw_circle(x, y, r, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 192

def self.draw_circle(x, y, r, color, z=0)
  enqueue_draw(z, :circle, x, y, r, color)
end

.draw_circle_fill(x, y, r, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 196

def self.draw_circle_fill(x, y, r, color, z=0)
  enqueue_draw(z, :circle_fill, x, y, r, color)
end

.draw_ex(x, y, image, options = {}) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 166

def self.draw_ex(x, y, image, options={})
  enqueue_draw(options[:z] || 0, :draw_ex, x, y, image, options)
end

.draw_font(x, y, string, font, option = {}) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 170

def self.draw_font(x, y, string, font, option={})
  z = option[:z] || 0
  color = option[:color] || [255, 255, 255]
  enqueue_draw(z, :font, x, y, string, font, color)
end

.draw_line(x1, y1, x2, y2, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 180

def self.draw_line(x1, y1, x2, y2, color, z=0)
  enqueue_draw(z, :line, x1, y1, x2, y2, color)
end

.draw_pause_screen ⇒ Object 



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# File 'lib/dxopal/window.rb', line 46

def self.draw_pause_screen
  Window.draw_box_fill(0, 0, Window.width, Window.height, C_BLACK)
  Window.draw_font(0, 0, "...PAUSE...", Font.default, color: C_WHITE)
end

.draw_pixel(x, y, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 176

def self.draw_pixel(x, y, color, z=0)
  enqueue_draw(z, :pixel, x, y, color)
end

.draw_rot(x, y, image, angle, center_x = nil, center_y = nil, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 162

def self.draw_rot(x, y, image, angle, center_x=nil, center_y=nil, z=0)
  enqueue_draw(z, :image_rot, x, y, image, angle, center_x, center_y)
end

.draw_scale(x, y, image, scale_x, scale_y, center_x = nil, center_y = nil, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 158

def self.draw_scale(x, y, image, scale_x, scale_y, center_x=nil, center_y=nil, z=0)
  enqueue_draw(z, :image_scale, x, y, image, scale_x, scale_y, center_x, center_y)
end

.draw_triangle(x1, y1, x2, y2, x3, y3, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 200

def self.draw_triangle(x1, y1, x2, y2, x3, y3, color, z=0)
  enqueue_draw(z, :triangle, x1, y1, x2, y2, x3, y3, color)
end

.draw_triangle_fill(x1, y1, x2, y2, x3, y3, color, z = 0) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 204

def self.draw_triangle_fill(x1, y1, x2, y2, x3, y3, color, z=0)
  enqueue_draw(z, :triangle_fill, x1, y1, x2, y2, x3, y3, color)
end

.enqueue_draw(z, *args) ⇒ Object

(internal)



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# File 'lib/dxopal/window.rb', line 209

def self.enqueue_draw(z, *args)
  @@draw_queue.push([z, @@draw_queue.length, *args])
end

.fps ⇒ Object 



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# File 'lib/dxopal/window.rb', line 129

def self.fps; @@fps; end

.fps=(w) ⇒ Object 



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# File 'lib/dxopal/window.rb', line 130

def self.fps=(w); @@fps = w; end

.height ⇒ Object 



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# File 'lib/dxopal/window.rb', line 141

def self.height; @@height; end

.height=(h) ⇒ Object

Set window height and resize the canvas Set `nil` to maximize canvas



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# File 'lib/dxopal/window.rb', line 144

def self.height=(h)
  canvas = `document.getElementById("dxopal-canvas")`
  @@height = h || `window.innerHeight`
  `canvas.height = #{@@height}`
  `canvas.style.height = #{@@height}`
end

.load_resources(&block) ⇒ Object

Load resources specified with Image.register or Sound.register Call block when loaded



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# File 'lib/dxopal/window.rb', line 18

def self.load_resources(&block)
  RemoteResource._load_resources do
    DXOpal.dump_error(&block)
  end
end

.loop(&block) ⇒ Object

Start main loop

When called twice, previous loop is stopped (this is useful when implementing interactive game editor, etc.)



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# File 'lib/dxopal/window.rb', line 28

def self.loop(&block)
  already_running = !!@@block
  @@block = block
  return if already_running
  `window`.JS.requestAnimationFrame{|time| _loop(time) }
end

.pause ⇒ Object

(DXOpal original) Pause & resume



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# File 'lib/dxopal/window.rb', line 36

def self.pause
  @@paused = true
  @@draw_queue.clear
  draw_pause_screen
end

.paused? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dxopal/window.rb', line 41

def self.paused?; @@paused; end

.real_fps ⇒ Object 



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# File 'lib/dxopal/window.rb', line 131

def self.real_fps; @@real_fps; end

.resume ⇒ Object 



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# File 'lib/dxopal/window.rb', line 42

def self.resume
  raise "Window.resume is called before Window.loop" if @@block.nil?
  @@paused = false; Window.loop(&@@block)
end

.width ⇒ Object 



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# File 'lib/dxopal/window.rb', line 132

def self.width; @@width; end

.width=(w) ⇒ Object

Set window width and resize the canvas Set `nil` to maximize canvas



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# File 'lib/dxopal/window.rb', line 135

def self.width=(w)
  canvas = `document.getElementById("dxopal-canvas")`
  @@width = w || `window.innerWidth`
  `canvas.width = #{@@width}`
  `canvas.style.width = #{@@width}`
end