Class: Play

Inherits:

Chingu::GameState

• Object
• Chingu::GameState
• Play

Includes:

GamespacePersistence

Defined in:

lib/prkwars/play.rb

Overview

A class representing the game state of playing the game itself.

Constant Summary

PLAYER_START_X =

800

PLAYER_START_Y =

640

Instance Method Summary

• #initialize(options = {}) ⇒ Play constructor

  Initialization method of Play maps input to the exit function, creates a gamespace to play in and spawns the player.

• #update ⇒ Object

  Update loop does three major things each frame: * Collides enemies with player’s bullets and reduces their HP if possible.

Methods included from GamespacePersistence

#correct_coords, #in_bounds

Constructor Details

#initialize(options = {}) ⇒ Play

Initialization method of Play maps input to the exit function, creates a gamespace to play in and spawns the player. Together with that, sets up variables for enemy generation, score calculation and message displays.

# File 'lib/prkwars/play.rb', line 20

def initialize(options = {})
  super(options)

  self.input = { esc: :exit }

  @gamespace = GameSpace.create(x: 1280 / 2, y: 720 / 2)
  @player = Player.create(@gamespace,
                          zorder: ZOrder::GAMEOBJECT,
                          x: PLAYER_START_X, y: PLAYER_START_Y)
  @gamespace.player = @player

  setup_enemy_generation
  setup_score_calculation
  setup_display_messages
end

Instance Method Details

#update ⇒ Object

Update loop does three major things each frame:

• Collides enemies with player’s bullets and reduces their HP if possible.

• Collides enemies with player’s ship and removes the player’s life if so.

• Performs another step in the enemy unit generation.

# File 'lib/prkwars/play.rb', line 42

def update
  super
  collide_enemies_bullets
  collide_enemies_player

  generate_random_enemy
end