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

lib/particle_emitters/smoke_emitter.rb

@@ -0,0 +1,37 @@
+class IMICRTS
+  class SmokeEmitter < ParticleEmitter
+    def setup
+      @time_to_live = Float::INFINITY
+      @particle_time_to_live = 2_500
+      @frequency = 10.0
+      @color = Gosu::Color.rgba(255, 255, 255, 255.0 * 0.4)
+      @direction = CyberarmEngine::Vector.up
+      @direction.y = 4.5
+      @jitter = 25.0
+
+      @images = Gosu::Image.load_tiles("#{IMICRTS::ASSETS_PATH}/smoke/smoke.png", 32, 32, retro: false)
+    end
+
+    def emit
+      super
+
+      @particles.last.factor = CyberarmEngine::Vector.new(0.1, 0.1)
+    end
+
+    def update
+      super
+
+      @particles.each do |particle|
+        life_cycle = (Gosu.milliseconds - particle.born_at.to_f) / particle.time_to_live
+        scale = (2.0 * life_cycle) + 0.25
+        particle.factor.x = scale
+        particle.factor.y = scale
+
+        particle.color.alpha = ((255.0 * (1.0 - life_cycle)) - 255.0 * 0.4).clamp(0.0, 255.0)
+        particle.angle += rand(0.1..0.5)
+
+        particle.direction.x = Math.cos(Gosu.milliseconds / 1_000.0) * 0.162
+      end
+    end
+  end
+end