Class: Tank

Inherits:
GameObject show all
Defined in:
lib/entities/tank.rb

Constant Summary collapse

SHOOT_DELAY = 
500

Instance Attribute Summary collapse

Attributes inherited from GameObject

#components, #location, #x, #y

Instance Method Summary collapse

Methods inherited from GameObject

#collide, #draw, #effect?, #mark_for_removal, #move, #removable?, #update

Constructor Details

#initialize(object_pool, input) ⇒ Tank

Returns a new instance of Tank.



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# File 'lib/entities/tank.rb', line 7

def initialize(object_pool, input)
  x, y = object_pool.map.spawn_point
  super(object_pool, x, y)
  @input = input
  @input.control(self)
  @physics = TankPhysics.new(self, object_pool)
  @sounds = TankSounds.new(self, object_pool)
  @health = TankHealth.new(self, object_pool)
  @graphics = TankGraphics.new(self)
  @direction = rand(0..7) * 45
  @gun_angle = rand(0..360)
  reset_modifiers
end

Instance Attribute Details

#direction ⇒ Object

Returns the value of attribute direction.



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# File 'lib/entities/tank.rb', line 3

def direction
  @direction
end

#fire_rate_modifier ⇒ Object

Returns the value of attribute fire_rate_modifier.



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# File 'lib/entities/tank.rb', line 3

def fire_rate_modifier
  @fire_rate_modifier
end

#graphics ⇒ Object

Returns the value of attribute graphics.



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# File 'lib/entities/tank.rb', line 3

def graphics
  @graphics
end

#gun_angle ⇒ Object

Returns the value of attribute gun_angle.



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# File 'lib/entities/tank.rb', line 3

def gun_angle
  @gun_angle
end

#health ⇒ Object

Returns the value of attribute health.



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# File 'lib/entities/tank.rb', line 3

def health
  @health
end

#input ⇒ Object

Returns the value of attribute input.



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# File 'lib/entities/tank.rb', line 3

def input
  @input
end

#physics ⇒ Object

Returns the value of attribute physics.



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# File 'lib/entities/tank.rb', line 3

def physics
  @physics
end

#sounds ⇒ Object

Returns the value of attribute sounds.



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# File 'lib/entities/tank.rb', line 3

def sounds
  @sounds
end

#speed_modifier ⇒ Object

Returns the value of attribute speed_modifier.



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# File 'lib/entities/tank.rb', line 3

def speed_modifier
  @speed_modifier
end

#throttle_down ⇒ Object

Returns the value of attribute throttle_down.



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# File 'lib/entities/tank.rb', line 3

def throttle_down
  @throttle_down
end

Instance Method Details

#box ⇒ Object 



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# File 'lib/entities/tank.rb', line 21

def box
  @physics.box
end

#can_shoot? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/entities/tank.rb', line 50

def can_shoot?
  Gosu.milliseconds - (@last_shot || 0) >
    (SHOOT_DELAY / @fire_rate_modifier)
end

#on_collision(object) ⇒ Object 



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# File 'lib/entities/tank.rb', line 25

def on_collision(object)
  return unless object
  # Avoid recursion
  if object.class == Tank
    # Inform AI about hit
    object.input.on_collision(object)
  else
    # Call only on non-tanks to avoid recursion
    object.on_collision(self)
  end
  # Bullets should not slow Tanks down
  if object.class != Bullet
    @sounds.collide if @physics.speed > 1
  end
end

#reset_modifiers ⇒ Object 



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# File 'lib/entities/tank.rb', line 55

def reset_modifiers
  @fire_rate_modifier = 1
  @speed_modifier = 1
end

#shoot(target_x, target_y) ⇒ Object 



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# File 'lib/entities/tank.rb', line 41

def shoot(target_x, target_y)
  if can_shoot?
    @last_shot = Gosu.milliseconds
    Bullet.new(object_pool, @x, @y, target_x, target_y).fire(
      self, 1500)
    input.stats.add_shot
  end
end

#to_s ⇒ Object 



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# File 'lib/entities/tank.rb', line 60

def to_s
  "Tank [#{@health.health}@#{@x}:#{@y}@#{@physics.speed.round(2)}px/tick]#{@input.stats}"
end