Added Texture object for handling creating and caching textures, stubbed ParticleEmitter

lib/texture.rb

@@ -0,0 +1,62 @@
+class IMICFPS
+  class Texture
+    include CommonMethods
+
+    CACHE = {}
+
+    def self.release_textures
+      CACHE.values.each do |id|
+        glDeleteTextures(id)
+      end
+    end
+
+    attr_reader :id
+    def initialize(*path)
+      if path.size > 1
+        path = "#{GAME_ROOT_PATH}/assets/#{path.join("/")}"
+      else
+        path = path.first
+      end
+
+      unless path.is_a?(String)
+        @id = create_from_image(path)
+      else
+        @id = from_cache(path)
+      end
+    end
+
+    def from_cache(path)
+      CACHE[path] = create_from_image(path) unless CACHE[path]
+
+      return CACHE[path]
+    end
+
+    def create_from_image(path_or_image)
+      puts "Allocating texture for: #{path_or_image}" if window.config.get(:debug_options, :stats)
+
+      texture = nil
+      if path_or_image.is_a?(Gosu::Image)
+        texture = path_or_image
+      else
+        texture = Gosu::Image.new(path_or_image, retro: false)
+      end
+
+      array_of_pixels = texture.to_blob
+
+      tex_names_buf = ' ' * 8
+      glGenTextures(1, tex_names_buf)
+      texture_id = tex_names_buf.unpack('L2').first
+
+      glBindTexture(GL_TEXTURE_2D, texture_id)
+      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture.width, texture.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, array_of_pixels)
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT)
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT)
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR)
+      glGenerateMipmap(GL_TEXTURE_2D)
+      gl_error?
+
+      return texture_id
+    end
+  end
+end