TileMap parser can now load spawn locations, added construction yard building, added particle emitters, added smoke sprite and svg.

lib/particle_emitter.rb

@@ -0,0 +1,93 @@
+class IMICRTS
+  class ParticleEmitter
+    def initialize(position:, direction: CyberarmEngine::Vector.up, time_to_live: 1000, particle_time_to_live: 500, speed: 10.0, max_particles: 128, frequency: 10.0, images: [], color: Gosu::Color::WHITE.dup, jitter: 10.0)
+      @position = position
+      @direction = direction
+      @time_to_live = time_to_live
+      @particle_time_to_live = particle_time_to_live
+      @speed = speed
+      @max_particles = max_particles
+      @frequency = frequency
+      @images = images
+      @color = color
+      @jitter = jitter
+
+      @born_at = Gosu.milliseconds
+      @last_emitted_at = 0
+      @particles = []
+      @factor = CyberarmEngine::Vector.new(1.0 ,1.0)
+
+      setup
+    end
+
+    def setup
+    end
+
+    def emit
+      dir = @direction.clone
+      dir.x = rand(-@jitter.to_f..@jitter.to_f) * 1
+      dir.normalized
+
+      @particles << Particle.new(
+        position: @position, direction: dir,
+        factor: @factor.clone, angle: rand(360.0),
+        speed: @speed, time_to_live: @particle_time_to_live, image: @images.sample,
+        color: @color.dup
+      )
+
+      @last_emitted_at = Gosu.milliseconds
+    end
+
+    def draw
+      @particles.each(&:draw)
+    end
+
+    def update
+      if @particles.count < @max_particles && Gosu.milliseconds >= @last_emitted_at + (1000.0 / @frequency)
+        emit
+      end
+
+      @particles.each do |particle|
+        @particles.delete(particle) if particle.die?
+        particle.update
+      end
+    end
+
+    def die?
+      Gosu.milliseconds >= @born_at + @time_to_live
+    end
+  end
+
+  class Particle
+    attr_accessor :position, :direction, :factor, :angle, :speed, :time_to_live, :image, :color, :born_at
+    def initialize(position:, direction:, factor:, angle:, speed:, time_to_live:, image:, color:)
+      @position = position
+      @direction = direction
+      @factor = factor
+      @angle = angle
+      @speed = speed
+      @time_to_live = time_to_live
+      @image = image
+      @color = color
+
+      @born_at = Gosu.milliseconds
+    end
+
+    def draw
+      @image.draw_rot(*@position.to_a[0..2], @angle, 0.5, 0.5, @factor.x, @factor.y, @color)
+    end
+
+    def update
+      @position -= (@direction * @speed) * $window.dt
+    end
+
+    def die?
+      Gosu.milliseconds >= @born_at + @time_to_live
+    end
+  end
+end
+
+Dir.glob("#{IMICRTS::GAME_ROOT_PATH}/lib/particle_emitters/**/*.rb").each do |emitter|
+  p emitter
+  require_relative emitter
+end