Class: AuthorEngine::GameRunner

Inherits:
Object
  • Object
show all
Includes:
TouchHandler
Defined in:
lib/author_engine/game/opal/game_runner.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from TouchHandler

#copy_touch, #handle_touch_cancel, #handle_touch_end, #handle_touch_move, #handle_touch_start, #set_touch, #touch_handler_setup

Constructor Details

#initialize(project_string) ⇒ GameRunner 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 14

def initialize(project_string)
  AuthorEngine::GameRunner.instance=(self)

  @save_file = AuthorEngine::SaveFile.new(nil)
  @save_file.load(false, project_string)

  size = 16

  @levels  = @save_file.levels
  @levels.each {|level| level.each {|sprite| sprite.x = sprite.x * size; sprite.y = sprite.y * size}}

  @sprites = []
  @spritesheet = nil
  @spritesheet_width  = @save_file.sprites.columns
  @spritesheet_height = @save_file.sprites.rows
  @sprite_size = 16

  @fps = 0
  @counted_frames = 0
  @frame_count_stated_at = 0

  @game = Game.new(code: @save_file.code)
  build_spritesheet_and_sprites_list
  resize_canvas

  @collision_detection = AuthorEngine::CollisionDetection.new(@sprites, @levels, @save_file.sprites)
  @game.authorengine_collision_detection = @collision_detection

  @game.init

  @show_touch_controls = false
  @touch_joystick = TouchJoystick.new(x: 100, radius: 50, side: :left)
  @touch_buttons = []
  @touch_buttons.push(
    TouchButton.new(
      label: "X", color: @game.red, x: 50, width: 50, height: 50, side: :right, for_key: "x"
      ),
    TouchButton.new(
      label: "Y", color: @game.yellow, x: 125, width: 50, height: 50, side: :right, for_key: "y"
    )
  )

  @fullscreen_button = TouchButton.new(label: "Fullscreen", color: @game.black, x: 50, y: 10, width: 100, height: 50, side: :right)
  touch_handler_setup

  return self
end

Instance Attribute Details

#fps ⇒ Object (readonly)

Returns the value of attribute fps.



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# File 'lib/author_engine/game/opal/game_runner.rb', line 12

def fps
  @fps
end

#game ⇒ Object (readonly)

Returns the value of attribute game.



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# File 'lib/author_engine/game/opal/game_runner.rb', line 13

def game
  @game
end

#levels ⇒ Object (readonly)

Returns the value of attribute levels.



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# File 'lib/author_engine/game/opal/game_runner.rb', line 12

def levels
  @levels
end

#save_file ⇒ Object (readonly)

Returns the value of attribute save_file.



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# File 'lib/author_engine/game/opal/game_runner.rb', line 12

def save_file
  @save_file
end

#sprites ⇒ Object (readonly)

Returns the value of attribute sprites.



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# File 'lib/author_engine/game/opal/game_runner.rb', line 12

def sprites
  @sprites
end

#spritesheet ⇒ Object (readonly)

Returns the value of attribute spritesheet.



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# File 'lib/author_engine/game/opal/game_runner.rb', line 12

def spritesheet
  @spritesheet
end

Class Method Details

.instance ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 3

def self.instance
  @instance
end

.instance=(klass) ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 6

def self.instance=(klass)
  @instance = klass
end

Instance Method Details

#build_spritesheet_and_sprites_list ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 156

def build_spritesheet_and_sprites_list
  spritesheet_data = @save_file.sprites
  width = spritesheet_data.columns
  height= spritesheet_data.rows
  size  = 16

  temp_canvas = `document.createElement('canvas')`
  temp_canvas_context = `#{temp_canvas}.getContext('2d')`
  `#{temp_canvas}.width  = #{spritesheet_data.columns}`
  `#{temp_canvas}.height = #{spritesheet_data.rows}`

  buffer = `new Uint8ClampedArray(#{spritesheet_data.to_blob})`
  image_data = `new ImageData(#{buffer}, #{width})`
  `#{temp_canvas_context}.putImageData(#{image_data}, 0, 0)`

  @spritesheet = `new Image()`
  `#{@spritesheet}.onload = function() { #{load_sprites} }`
  `#{@spritesheet}.src = #{temp_canvas}.toDataURL()`

end

#draw ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 62

def draw
  @game.draw_background
  @game.draw
  return nil
end

#draw_touch_controls ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 121

def draw_touch_controls
  @fullscreen_button.draw
  @touch_buttons.each(&:draw)
  @touch_joystick.draw
end

#fullscreen_changed ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 200

def fullscreen_changed
  resize_canvas
end

#load_sprites ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 177

def load_sprites
  spritesheet_data = @save_file.sprites
  width = spritesheet_data.columns
  height= spritesheet_data.rows
  size  = 16

  temp_canvas = `document.createElement('canvas')`
  temp_canvas_context = `#{temp_canvas}.getContext('2d')`
  `#{temp_canvas}.width  = #{size}`
  `#{temp_canvas}.height = #{size}`

  (height/size).times do |y|
    (width/size).times do |x|
      `#{temp_canvas_context}.clearRect(0,0, #{size}, #{size})`
      `#{temp_canvas_context}.drawImage(#{@spritesheet}, #{x * size}, #{y * size}, #{size}, #{size}, 0, 0, #{size}, #{size})`

      `createImageBitmap(#{@spritesheet}, #{x * size}, #{y * size}, #{size}, #{size}).then(sprite => { #{@sprites.push(`sprite`)} })`
    end
  end

  return nil
end

#reposition_touch_controls ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 132

def reposition_touch_controls
end

#resize_canvas ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 135

def resize_canvas
  width  = `window.innerWidth`
  height = `window.innerHeight`

  if width < height
    @game.authorengine_scale = `window.innerWidth / 128.0`
  else
    @game.authorengine_scale = `window.innerHeight / 128.0`
  end

  `#{@game.authorengine_canvas}.width  = #{width}`
  `#{@game.authorengine_canvas}.height = #{height}`
  `#{@game.authorengine_canvas}.style.width  = #{width}`
  `#{@game.authorengine_canvas}.style.height = #{height}`

  `#{@game.authorengine_canvas_context}.imageSmoothingEnabled = false`

  reposition_touch_controls
  return nil
end

#run_game ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 73

def run_game
  `window.requestAnimationFrame(function() {#{run_game}})` # placed here to ensure next frame is called even if draw or update throw an error
  `#{@game.authorengine_canvas_context}.clearRect(0,0, window.innerWidth, window.innerHeight)`
  `#{@game.authorengine_canvas_context}.fillStyle = "#222"`
  `#{@game.authorengine_canvas_context}.fillRect(0,0, window.innerWidth, window.innerHeight)`

  @counted_frames+=1

  if @game.milliseconds - @frame_count_stated_at >= 1000.0
    @fps = @counted_frames
    @frame_count_stated_at = @game.milliseconds
    @counted_frames = 0
  end


  if @sprites.size == (@spritesheet_width/@sprite_size)*(@spritesheet_height/@sprite_size)
    width = 128 * @game.authorengine_scale

    # `#{@game.authorengine_canvas_context}.setTransform(1, 0, 0, 1, 0, 0)`
    `#{@game.authorengine_canvas_context}.save()`
    `#{@game.authorengine_canvas_context}.translate(window.innerWidth/2 - #{width/2}, 0)`
    `#{@game.authorengine_canvas_context}.scale(#{@game.authorengine_scale}, #{@game.authorengine_scale})`
    `#{@game.authorengine_canvas_context}.save()`

    region = `new Path2D()`
    `#{region}.rect(0, 0, 128, 128)`
    `#{@game.authorengine_canvas_context}.clip(#{region})`
    `#{@game.authorengine_canvas_context}.save()`
    draw

    `#{@game.authorengine_canvas_context}.restore()`
    `#{@game.authorengine_canvas_context}.restore()`
    `#{@game.authorengine_canvas_context}.restore()`

    update

    if @show_touch_controls
      draw_touch_controls
      update_touch_controls
    end
  else
    @game.draw_background
    @game.text("Loading sprite #{@sprites.size}/#{(@spritesheet_width/@sprite_size)*(@spritesheet_height/@sprite_size)}...", 0, @game.height/2, 8)
  end

  return nil
end

#show(update_interval = (1000.0 / 60)) ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 204

def show(update_interval = (1000.0 / 60))
  return unless RUBY_ENGINE == "opal"

  `window.addEventListener('resize', () => { #{resize_canvas} })`
  `document.addEventListener('keydown', (event) => { #{@show_touch_controls = false; AuthorEngine::Part::OpalInput::KEY_STATES[`event.key`] = true} })`
  `document.addEventListener('keyup',   (event) => { #{AuthorEngine::Part::OpalInput::KEY_STATES[`event.key`] = false} })`

  `#{@game.authorengine_canvas}.addEventListener('touchstart',  (event) => { #{@show_touch_controls = true; handle_touch_start(`event`)} })`
  `#{@game.authorengine_canvas}.addEventListener('touchmove',   (event) => { #{handle_touch_move(`event`)} })`
  `#{@game.authorengine_canvas}.addEventListener('touchcancel', (event) => { #{handle_touch_cancel(`event`)} })`
  `#{@game.authorengine_canvas}.addEventListener('touchend',    (event) => { #{handle_touch_end(`event`)} })`

  `#{@game.authorengine_canvas}.addEventListener('fullscreenchange',    () => { #{fullscreen_changed} })`

  `document.getElementById('loading').style.display = "none"`

  `window.requestAnimationFrame(function() {#{run_game}})`
  return nil
end

#update ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 68

def update
  @game.update
  return nil
end

#update_touch_controls ⇒ Object 



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# File 'lib/author_engine/game/opal/game_runner.rb', line 127

def update_touch_controls
  @touch_buttons.each { |button| button.trigger?(@current_touches) }
  @touch_joystick.update(@current_touches)
end