If agent.position == agent.target -> render only transpartent occupied layer

flatland/utils/graphics_layer.py

@@ -79,6 +79,9 @@ class GraphicsLayer(object):
     def setAgentAt(self, iAgent, row, col, iDirIn, iDirOut, isSelected=False):
         pass
 
+    def setCellOccupied(self, iAgent, row, col):
+        pass
+
     def resize(self, env):
         pass
 

flatland/utils/graphics_pil.py

@@ -383,6 +383,9 @@ class PILSVG(PILGL):
         station = self.pilFromSvgFile("svg", "Bahnhof_#d50000_target.svg")
         self.ltStationColors = self.recolorImage(station, [0, 0, 0], self.ltAgentColors, False)
 
+        cellOccupied = self.pilFromSvgFile("svg", "Cell_occupied.svg")
+        self.ltCellOccupied = self.recolorImage(cellOccupied, [0, 0, 0], self.ltAgentColors, False)
+
         # Merge them with the regular rails.
         # https://stackoverflow.com/questions/38987/how-to-merge-two-dictionaries-in-a-single-expression
         self.dPilRail = {**dPilRailFiles, **dPilTargetFiles}
@@ -538,6 +541,10 @@ class PILSVG(PILGL):
             self.clear_layer(2, 0)
             self.drawImageRC(svgBG, (row, col), layer=2)
 
+    def setCellOccupied(self, iAgent, row, col):
+        occIm = self.ltCellOccupied[iAgent % len(self.ltCellOccupied)]
+        self.drawImageRC(occIm, (row, col), 1)
+
 
 def main2():
     gl = PILSVG(10, 10)

flatland/utils/rendertools.py

@@ -673,8 +673,13 @@ class RenderTool(object):
                 direction = agent.direction
                 old_direction = agent.direction
 
-            # setAgentAt uses the agent index for the color
-            self.gl.setAgentAt(iAgent, *position, old_direction, direction, iSelectedAgent == iAgent)
+            if agent.position == agent.target:
+                # setAgentAt uses the agent index for the color
+                self.gl.setCellOccupied(iAgent, *(agent.position))
+            else:
+                # setAgentAt uses the agent index for the color
+                self.gl.setCellOccupied(iAgent, *(agent.position))
+                self.gl.setAgentAt(iAgent, *position, old_direction, direction, iSelectedAgent == iAgent)
 
         if show_observations:
             self.renderObs(range(env.get_num_agents()), env.dev_obs_dict)

notebooks/Scene_Editor.ipynb

@@ -70,7 +70,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "d0b362c4de2849fe93f505143d04b243",
+       "model_id": "d1b14568dc1a48ba9ca3eb6afb7f2eff",
        "version_major": 2,
        "version_minor": 0
       },

svg/Cell_occupied.svg

+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 23.0.3, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Ebene_1"
+   x="0px"
+   y="0px"
+   viewBox="0 0 240 240"
+   style="enable-background:new 0 0 240 240;"
+   xml:space="preserve"
+   sodipodi:docname="Cell_occupied.svg"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"><metadata
+   id="metadata11"><rdf:RDF><cc:Work
+       rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+         rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title /></cc:Work></rdf:RDF></metadata>
+    <defs
+   id="defs9" /><sodipodi:namedview
+   pagecolor="#ffffff"
+   bordercolor="#666666"
+   borderopacity="1"
+   objecttolerance="10"
+   gridtolerance="10"
+   guidetolerance="10"
+   inkscape:pageopacity="0"
+   inkscape:pageshadow="2"
+   inkscape:window-width="1920"
+   inkscape:window-height="1017"
+   id="namedview7"
+   showgrid="false"
+   inkscape:zoom="2.7812867"
+   inkscape:cx="24.994769"
+   inkscape:cy="123.32931"
+   inkscape:window-x="-8"
+   inkscape:window-y="-8"
+   inkscape:window-maximized="1"
+   inkscape:current-layer="Ebene_1" />
+<style
+   type="text/css"
+   id="style2">
+	.st0{fill:#9CCB89;}
+</style>
+
+
+    
+    
+    <rect
+   style="fill:#000000;fill-opacity:0.90196079;stroke-width:1.00000226"
+   id="rect874"
+   width="240.89569"
+   height="241.25525"
+   x="9.5030348e-09"
+   y="0.18293978" /></svg>
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