Class: Move::Spawn

Inherits:
ComplexMove show all
Includes:
EntityConstants
Defined in:
lib/game_2d/move/spawn.rb

Overview

A move for ghosts.

Constant Summary collapse

SPAWN_TRAVEL_SPEED = 
80

Constants included from EntityConstants

EntityConstants::CELL_WIDTH_IN_PIXELS, EntityConstants::MAX_VELOCITY, EntityConstants::PIXEL_WIDTH, EntityConstants::WIDTH

Instance Attribute Summary collapse

Attributes inherited from ComplexMove

#actor_id

Instance Method Summary collapse

Methods inherited from ComplexMove

#initialize

Methods included from Serializable

#<=>, #==, as_json, #eql?, from_json, #hash, #to_json

Constructor Details

This class inherits a constructor from ComplexMove

Instance Attribute Details

#target_id ⇒ Object

target_id is registry_id of selected base



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# File 'lib/game_2d/move/spawn.rb', line 15

def target_id
  @target_id
end

Instance Method Details

#all_state ⇒ Object 



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# File 'lib/game_2d/move/spawn.rb', line 52

def all_state
  super.push @target_id
end

#as_json ⇒ Object 



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# File 'lib/game_2d/move/spawn.rb', line 55

def as_json
  super.merge! :target => @target_id
end

#on_completion(actor) ⇒ Object 



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# File 'lib/game_2d/move/spawn.rb', line 17

def on_completion(actor)
  space = actor.space
  target = space[target_id]
  return unless target && target.available?

  gecko = Entity::Gecko.new(actor.player_name)
  gecko.score = actor.score
  gecko.x, gecko.y, gecko.a = target.x, target.y, target.a
  return unless space << gecko

  actor.replace_player_entity(gecko)
end

#to_s ⇒ Object 



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# File 'lib/game_2d/move/spawn.rb', line 62

def to_s
  "Spawn[#{target_id}]"
end

#update(actor) ⇒ Object 



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# File 'lib/game_2d/move/spawn.rb', line 30

def update(actor)
  # It's convenient to set 'self' to the Player
  # object, here
  actor.instance_exec(self) do |cm|
    # Abort if the target gets destroyed, or becomes
    # occupied
    target = space[cm.target_id]
    return false unless target && target.available?

    # We're done
    if x == target.x && y == target.y
      @x_vel = @y_vel = 0
      return false
    end

    @x_vel = [[target.x - x, -SPAWN_TRAVEL_SPEED].max, SPAWN_TRAVEL_SPEED].min
    @y_vel = [[target.y - y, -SPAWN_TRAVEL_SPEED].max, SPAWN_TRAVEL_SPEED].min
    # move returns false: it failed somehow
    return move
  end
end

#update_from_json(json) ⇒ Object 



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# File 'lib/game_2d/move/spawn.rb', line 58

def update_from_json(json)
  self.target_id = json[:target].to_sym if json[:target]
  super
end