Class: TankRoamingState

Inherits:
TankMotionState show all
Defined in:
lib/entities/components/ai/tank_roaming_state.rb

Instance Method Summary collapse

Methods inherited from TankMotionState

#drive, #enter, #on_collision, #should_change_direction?, #substate_expired?, #wait, #waiting?

Constructor Details

#initialize(object, vision) ⇒ TankRoamingState

Returns a new instance of TankRoamingState.



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 2

def initialize(object, vision)
  super
  @object = object
  @vision = vision
end

Instance Method Details

#change_direction ⇒ Object 



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 33

def change_direction
  closest_powerup = @vision.closest_powerup(
    *required_powerups)
  if closest_powerup
    @seeking_powerup = true
    angle = Utils.angle_between(
      @object.x, @object.y,
      closest_powerup.x, closest_powerup.y)
    @object.physics.change_direction(
      angle - angle % 45)
    # Go away from inaccessable powerup
    unless @vision.can_go_forward?
      @seeking_powerup = false
      @object.physics.change_direction(
        @object.direction + 180)
    end
  else
    @seeking_powerup = false
    change = case rand(0..100)
    when 0..30
      -45
    when 30..60
      45
    when 60..80
      90
    when 80..100
      -90
    end
    @object.physics.change_direction(
      @object.direction + change)
  end
  @changed_direction_at = Gosu.milliseconds
  @will_keep_direction_for = turn_time
end

#drive_time ⇒ Object 



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 72

def drive_time
  rand(1000..3000)
end

#required_powerups ⇒ Object 



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 15

def required_powerups
  required = []
  health = @object.health.health
  if @object.fire_rate_modifier < 2 && health > 50
    required << FireRatePowerup
  end
  if @object.speed_modifier < 1.5 && health > 50
    required << TankSpeedPowerup
  end
  if health < 100
    required << RepairPowerup
  end
  if health < 190
    required << HealthPowerup
  end
  required
end

#turn_time ⇒ Object 



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 76

def turn_time
  if @seeking_powerup
    rand(100..300)
  else
    rand(1000..3000)
  end
end

#update ⇒ Object 



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 8

def update
  change_direction if should_change_direction?
  if substate_expired?
    rand > 0.2 ? drive : wait
  end
end

#wait_time ⇒ Object 



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# File 'lib/entities/components/ai/tank_roaming_state.rb', line 68

def wait_time
  rand(50..400)
end