Added Debris Dodge

Games/Debris_Dodge/Gemfile

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+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in tank_island.gemspec
+gemspec

Games/Debris_Dodge/README.md

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+# **Debris Dodge** 
+
+---
+
+<br>
+Give you best Hit!
+
+## **Description 📃**
+Tank Island is an open source 2D top down shooter game that was created with Ruby using
+[Gosu](http://www.libgosu.org) game development library while writing
+[this book](https://leanpub.com/developing-games-with-ruby/).
+
+
+## **functionalities 🎮**
+
+Top down 2D shooter game that involves blowing up tanks 
+
+<br>
+
+## **How to play? 🕹️**
+
+- `W` `A` `S` `D` moves your tank.
+- Mouse `left click` shoots.
+- `ESC` goes into menu and away from it.
+- `R` respawns your tank.
+- `T` spawns an enemy tank under mouse cursor.
+- `F1` enters debug mode.
+- `F2` toggles profiling
+
+
+<br>
+
+## **Screenshots 📸**
+
+<br><img src="./Assets/debris dodge.png" alt="Image Description">
+<br>
+<img src="./Assets/debriss.png" alt="Image Description">
+<br>
+
+
+
+
+
+<br>
+
+## Installation
+
+Before installing, make sure you have:
+
+- Ruby installed, preferably through [rbenv](https://github.com/sstephenson/rbenv), not rvm.
+- ImageMagick (`gem install rmagick` should work).
+- Gosu prerequisites for [Mac](https://github.com/jlnr/gosu/wiki/Getting-Started-on-OS-X),
+    [Linux](https://github.com/jlnr/gosu/wiki/Getting-Started-on-Linux) or
+    [Windows](https://github.com/jlnr/gosu/wiki/Getting-Started-on-Windows)
+
+To install it, run
+
+    $ gem install Debris_Dodge
+
+## Starting the game
+
+There are several ways to start the game.
+
+### Running in 800x600 window mode
+
+    $ Debris_Dodge
+
+### Running with custom resolution
+
+    $ w=1600 h=1200 Debris_Dodge
+
+### Running full screen with custom resolution
+
+    $ fs=1 w=1200 h=800 Debris_Dodge
+
+
+
+
+

Games/Debris_Dodge/Rakefile

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+require "bundler/gem_tasks"
+

Games/Debris_Dodge/bin/tank_island

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+#!/usr/bin/env ruby
+
+require 'gosu_texture_packer'
+require 'perlin_noise'
+require 'gosu'
+
+root_dir = File.expand_path(File.join(
+  File.dirname(File.dirname(__FILE__)), 'lib'))
+
+%w(
+  game_states/game_state.rb
+  game_states/play_state.rb
+  entities/components/component.rb
+  entities/components/ai/tank_motion_state.rb
+  entities/game_object.rb
+  entities/powerups/powerup.rb
+  entities/box.rb
+  entities/bullet.rb
+  entities/camera.rb
+  entities/components/ai/gun.rb
+  entities/components/ai/tank_chasing_state.rb
+  entities/components/ai/tank_fighting_state.rb
+  entities/components/ai/tank_fleeing_state.rb
+  entities/components/ai/tank_motion_fsm.rb
+  entities/components/ai/tank_motion_state.rb
+  entities/components/ai/tank_navigating_state.rb
+  entities/components/ai/tank_roaming_state.rb
+  entities/components/ai/tank_stuck_state.rb
+  entities/components/ai/vision.rb
+  entities/components/ai_input.rb
+  entities/components/box_graphics.rb
+  entities/components/bullet_graphics.rb
+  entities/components/bullet_physics.rb
+  entities/components/bullet_sounds.rb
+  entities/components/component.rb
+  entities/components/damage_graphics.rb
+  entities/components/explosion_graphics.rb
+  entities/components/explosion_sounds.rb
+  entities/components/health.rb
+  entities/components/player_input.rb
+  entities/components/player_sounds.rb
+  entities/components/powerup_graphics.rb
+  entities/components/powerup_sounds.rb
+  entities/components/tank_graphics.rb
+  entities/components/tank_health.rb
+  entities/components/tank_physics.rb
+  entities/components/tank_sounds.rb
+  entities/components/tree_graphics.rb
+  entities/damage.rb
+  entities/explosion.rb
+  entities/game_object.rb
+  entities/hud.rb
+  entities/map.rb
+  entities/object_pool.rb
+  entities/powerups/fire_rate_powerup.rb
+  entities/powerups/health_powerup.rb
+  entities/powerups/powerup.rb
+  entities/powerups/powerup_respawn_queue.rb
+  entities/powerups/repair_powerup.rb
+  entities/powerups/tank_speed_powerup.rb
+  entities/radar.rb
+  entities/score_display.rb
+  entities/tank.rb
+  entities/tree.rb
+  game_states/demo_state.rb
+  game_states/menu_state.rb
+  game_states/pause_state.rb
+  misc/axis_aligned_bounding_box.rb
+  misc/game_window.rb
+  misc/names.rb
+  misc/quad_tree.rb
+  misc/stats.rb
+  misc/stereo_sample.rb
+  misc/utils.rb
+).each do |f|
+  require File.join(root_dir, f)
+end
+
+$debug = false
+$window = GameWindow.new
+GameState.switch(MenuState.instance)
+$window.show

Games/Debris_Dodge/lib/entities/box.rb

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+class Box < GameObject
+  attr_reader :health, :graphics, :angle
+
+  def initialize(object_pool, x, y)
+    super
+    @graphics = BoxGraphics.new(self)
+    @health = Health.new(self, object_pool, 10, true)
+    @angle = rand(-15..15)
+  end
+
+  def on_collision(object)
+    return unless object.physics.speed > 1.0
+    move(*Utils.point_at_distance(@x, @y, object.direction, 2))
+    @box = nil
+  end
+
+  def box
+    return @box if @box
+    w = @graphics.width / 2
+    h = @graphics.height / 2
+    # Bounding box adjusted to trim shadows
+    @box = [x - w + 4,     y - h + 8,
+            x + w , y - h + 8,
+            x + w , y + h,
+            x - w + 4,     y + h]
+    @box = Utils.rotate(@angle, @x, @y, *@box)
+  end
+end

Games/Debris_Dodge/lib/entities/bullet.rb

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+class Bullet < GameObject
+  attr_accessor :target_x, :target_y, :source, :speed, :fired_at
+
+  def initialize(object_pool, source_x, source_y, target_x, target_y)
+    super(object_pool, source_x, source_y)
+    @target_x, @target_y = target_x, target_y
+    BulletPhysics.new(self, object_pool)
+    BulletGraphics.new(self)
+    BulletSounds.play(self, object_pool.camera)
+  end
+
+  def box
+    [@x, @y]
+  end
+
+  def explode
+    Explosion.new(object_pool, @x, @y, @source)
+    mark_for_removal
+  end
+
+  def fire(source, speed)
+    @source = source
+    @speed = speed
+    @fired_at = Gosu.milliseconds
+  end
+end

Games/Debris_Dodge/lib/entities/camera.rb

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+class Camera
+  attr_accessor :x, :y, :zoom
+  attr_reader :target
+
+  def target=(target)
+    @target = target
+    @x, @y = target.x, target.y
+    @zoom = 1
+  end
+
+  def desired_spot
+    if @target.physics.moving?
+      Utils.point_at_distance(
+        @target.x, @target.y,
+        @target.direction,
+        @target.physics.speed.ceil * 25)
+    else
+      [@target.x, @target.y]
+    end
+  end
+
+  def mouse_coords
+    x, y = target_delta_on_screen
+    mouse_x_on_map = @target.x +
+      (x + $window.mouse_x - ($window.width / 2)) / @zoom
+    mouse_y_on_map = @target.y +
+      (y + $window.mouse_y - ($window.height / 2)) / @zoom
+    [mouse_x_on_map, mouse_y_on_map].map(&:round)
+  end
+
+  def update
+    des_x, des_y = desired_spot
+    shift = Utils.adjust_speed(
+      @target.physics.speed).floor *
+      @target.speed_modifier + 1
+    if @x < des_x
+      if des_x - @x < shift
+        @x = des_x
+      else
+        @x += shift
+      end
+    elsif @x > des_x
+      if @x - des_x < shift
+        @x = des_x
+      else
+        @x -= shift
+      end
+    end
+    if @y < des_y
+      if des_y - @y < shift
+        @y = des_y
+      else
+        @y += shift
+      end
+    elsif @y > des_y
+      if @y - des_y < shift
+        @y = des_y
+      else
+        @y -= shift
+      end
+    end
+
+    zoom_delta = @zoom > 0 ? 0.01 : 1.0
+    zoom_delta = Utils.adjust_speed(zoom_delta)
+    if $window.button_down?(Gosu::KbUp)
+      @zoom -= zoom_delta unless @zoom < 0.7
+    elsif $window.button_down?(Gosu::KbDown)
+      @zoom += zoom_delta unless @zoom > 10
+    else
+      target_zoom = @target.physics.speed > 1.1 ? 0.75 : 1.0
+      if @zoom <= (target_zoom - 0.01)
+        @zoom += zoom_delta / 3
+      elsif @zoom > (target_zoom + 0.01)
+        @zoom -= zoom_delta / 3
+      end
+    end
+  end
+
+  def to_s
+    "FPS: #{Gosu.fps}. " <<
+      "#{@x}:#{@y} @ #{'%.2f' % @zoom}. " <<
+      'WASD to move, arrows to zoom.'
+  end
+
+  def target_delta_on_screen
+    [(@x - @target.x) * @zoom, (@y - @target.y) * @zoom]
+  end
+
+  def draw_crosshair
+    factor = 0.5
+    x = $window.mouse_x
+    y = $window.mouse_y
+    c = crosshair
+    c.draw(x - c.width * factor / 2,
+           y - c.height * factor / 2,
+           1000, factor, factor)
+  end
+
+  def viewport
+    x0 = @x - ($window.width / 2)  / @zoom
+    x1 = @x + ($window.width / 2)  / @zoom
+    y0 = @y - ($window.height / 2) / @zoom
+    y1 = @y + ($window.height / 2) / @zoom
+    [x0, x1, y0, y1]
+  end
+
+  private
+
+  def crosshair
+    @crosshair ||= Gosu::Image.new(
+      Utils.media_path('c_dot.png'), false)
+  end
+end