diff --git a/environments/factory/renderer.py b/environments/factory/renderer.py
index ad44a56..0109084 100644
--- a/environments/factory/renderer.py
+++ b/environments/factory/renderer.py
@@ -1,6 +1,16 @@
-import pygame
-from pathlib import Path
 import sys
+from dataclasses import dataclass
+import numpy as np
+from pathlib import Path
+import pygame
+
+
+@dataclass
+class Entity:
+    name: str
+    pos: np.array
+    value: float = 1
+
 
 class Renderer:
     BG_COLOR = (99, 110, 114)
@@ -31,14 +41,15 @@ class Renderer:
                     rect = pygame.Rect(x, y, self.cell_size, self.cell_size)
                     pygame.draw.rect(self.screen, Renderer.WHITE, rect, 1)
 
-    def blit_params(self, r, c, name):
+    def blit_params(self, entity, name):
+        r, c = entity.pos
         img = self.assets[name]
+        img.set_alpha(255*entity.value)
         o = self.cell_size//2
         r_, c_ = r*self.cell_size + o, c*self.cell_size + o
         rect = img.get_rect()
         rect.centerx, rect.centery = c_, r_
-
-        return img, rect
+        return dict(source=img, dest=rect)
 
     def load_asset(self, path, factor=1.0):
         s = int(factor*self.cell_size)
@@ -52,15 +63,15 @@ class Renderer:
                 pygame.quit()
                 sys.exit()
         self.fill_bg()
-        for asset, positions in pos_dict.items():
-            for x, y in positions:
-                img, rect = self.blit_params(x, y, asset)
+        for asset, entities in pos_dict.items():
+            for entity in entities:
+                bp = self.blit_params(entity, asset)
                 if 'agent' in asset and self.view_radius > 0:
-                    visibility_rect = rect.inflate((self.view_radius*2)*self.cell_size, (self.view_radius*2)*self.cell_size)
+                    visibility_rect = bp['dest'].inflate((self.view_radius*2)*self.cell_size, (self.view_radius*2)*self.cell_size)
                     shape_surf = pygame.Surface(visibility_rect.size, pygame.SRCALPHA)
                     pygame.draw.rect(shape_surf, self.PINK, shape_surf.get_rect())
                     self.screen.blit(shape_surf, visibility_rect)
-                self.screen.blit(img, rect)
+                self.screen.blit(**bp)
         pygame.display.flip()
         self.clock.tick(self.fps)
 
diff --git a/environments/factory/simple_factory_getting_dirty.py b/environments/factory/simple_factory_getting_dirty.py
index e5a85db..92eef56 100644
--- a/environments/factory/simple_factory_getting_dirty.py
+++ b/environments/factory/simple_factory_getting_dirty.py
@@ -9,6 +9,8 @@ from environments.factory.base_factory import BaseFactory, AgentState
 from environments import helpers as h
 
 from environments.factory.renderer import Renderer
+from environments.factory.renderer import Entity
+
 
 DIRT_INDEX = -1
 
@@ -37,12 +39,12 @@ class GettingDirty(BaseFactory):
         if not self.renderer:  # lazy init
             height, width = self.state.shape[1:]
             self.renderer = Renderer(width, height, view_radius=0)
-        self.renderer.render(
-            OrderedDict(dirt=np.argwhere(self.state[DIRT_INDEX] > h.IS_FREE_CELL),
-                        wall=np.argwhere(self.state[h.LEVEL_IDX] > h.IS_FREE_CELL),
-                        agent=np.argwhere(self.state[h.AGENT_START_IDX] > h.IS_FREE_CELL)
-                        )
-        )
+
+        dirt   = [Entity('dirt', [x, y], self.state[DIRT_INDEX, x, y]) for x, y in np.argwhere(self.state[DIRT_INDEX] > h.IS_FREE_CELL)]
+        walls  = [Entity('dirt', pos) for pos in np.argwhere(self.state[h.LEVEL_IDX] > h.IS_FREE_CELL)]
+        agents = [Entity('agent', pos) for pos in np.argwhere(self.state[h.AGENT_START_IDX] > h.IS_FREE_CELL)]
+
+        self.renderer.render(OrderedDict(dirt=dirt, wall=walls, agent=agents))
 
     def spawn_dirt(self) -> None:
         free_for_dirt = self.free_cells(excluded_slices=DIRT_INDEX)