diff --git a/display_assets.py b/display_assets.py
index b3fb554..33a710f 100644
--- a/display_assets.py
+++ b/display_assets.py
@@ -15,7 +15,7 @@ tile_asset_options = {
     "RED": const.ASSET_TILE_RED,
     "WHITE": const.ASSET_TILE_WHITE,
     "YELLOW": const.ASSET_TILE_YELLOW
-}
+    }
 
 mine_asset_options = {
     'A': const.ASSET_MINE_A,
diff --git a/project_constants.py b/project_constants.py
index 6f63163..381ee18 100644
--- a/project_constants.py
+++ b/project_constants.py
@@ -70,6 +70,12 @@ class Coords(Enum):
     Y = 1
 
 
+class Terrain(Enum):
+    CONCRETE = 1
+    GRASS = 2 
+    MUD = 4
+    
+
 # =============== #
 # === STRUCTS === #
 # =============== #
@@ -118,7 +124,7 @@ STRUCT_MINE_ATTRIBUTE_TYPES = {
 # ==== MAPS ==== #
 # ============== #
 
-MAP_RANDOM_10x10 = os.path.join("resources", "minefields", "secondmap.json")
+MAP_RANDOM_10x10 = os.path.join("resources", "minefields", "fourthmap.json")
 
 
 # ============== #
diff --git a/resources/minefields/fourthmap.json b/resources/minefields/fourthmap.json
new file mode 100644
index 0000000..644d011
--- /dev/null
+++ b/resources/minefields/fourthmap.json
@@ -0,0 +1,500 @@
+{
+    "0,0": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "0,1": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "0,2": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "0,3": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "0,4": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "0,5": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "0,6": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "0,7": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "0,8": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "0,3"
+      }
+    },
+    "0,9": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "F",
+        "mine_type": "time",
+        "timer": 20
+      }
+    },
+    "1,0": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "1,1": {
+      "color": "GREEN",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "1,2": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "1,3": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "1,4": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "1,5": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "1,6": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "1,7": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "1,8": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "1,9": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "2,0": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "2,1": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "2,2": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "2,3": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "2,4": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "2,5": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "2,6": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "2,7": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "2,8": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "2,9": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "3,0": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "3,1": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "F",
+        "mine_type": "time",
+        "timer": 19
+      }
+    },
+    "3,2": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "3,3": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "1,3"
+      }
+    },
+    "3,4": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "3,5": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "3,6": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "3,7": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "3,8": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "3,9": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "4,0": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "4,1": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "4,2": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "4,3": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "4,4": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "4,5": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "4,6": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "4,7": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": null
+      }
+    },
+    "4,8": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "4,9": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "5,0": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "5,1": {
+      "color": "ORANGE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "2,3"
+      }
+    },
+    "5,2": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "5,3": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "5,4": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "2,8"
+      }
+    },
+    "5,5": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "5,6": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "5,7": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "5,8": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "5,9": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "6,0": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "6,1": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "6,2": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "6,3": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "6,4": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "6,5": {
+      "color": "GREEN",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "6,6": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "6,7": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "6,8": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "6,9": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "7,0": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "4,7"
+      }
+    },
+    "7,1": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "7,2": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "7,3": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "7,4": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "7,5": {
+      "color": "GREEN",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "7,6": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "F",
+        "mine_type": "time",
+        "timer": 39
+      }
+    },
+    "7,7": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "7,8": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "7,9": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "8,0": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "8,1": {
+      "color": "GREEN",
+      "mine": {
+        "asset": "F",
+        "mine_type": "time",
+        "timer": 24
+      }
+    },
+    "8,2": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "8,3": {
+      "color": "BLUE",
+      "mine": {
+        "asset": "A",
+        "mine_type": "standard"
+      }
+    },
+    "8,4": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "8,5": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "8,6": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "8,7": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "8,8": {
+      "color": "GREEN",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "3,6"
+      }
+    },
+    "8,9": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "9,0": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "9,1": {
+      "color": "GREEN",
+      "mine": null
+    },
+    "9,2": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "9,3": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "9,4": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "9,5": {
+      "color": "GREEN",
+      "mine": {
+        "asset": "B",
+        "mine_type": "chained",
+        "predecessor": "0,4"
+      }
+    },
+    "9,6": {
+      "color": "BLUE",
+      "mine": null
+    },
+    "9,7": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "9,8": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "9,9": {
+      "color": "ORANGE",
+      "mine": null
+    },
+    "agent_starting_position":  "0,0"
+    
+  }
\ No newline at end of file
diff --git a/tile.py b/tile.py
index ee31c23..c28209f 100644
--- a/tile.py
+++ b/tile.py
@@ -1,7 +1,23 @@
+from project_constants import Terrain as t
+
+#Assume_cost function assumes colour as an argument (colour that is already given to a tile) and depending
+#on what it is returns value of Terrein Enum
+#It is used in Tile.cost (giving the value to the tile)
+
+
+def assume_cost(color):
+    if (color == "BLUE"):
+        return t.CONCRETE
+    elif (color == "GREEN"):
+        return t.GRASS
+    elif (color == "ORANGE"):
+        return t.MUD
+
+
 class Tile:
     def __init__(self, position, color=None, mine=None):
         self.position = position
         self.color = color
-
+        self.cost = assume_cost(color)
         # mine is an instance of Mine class
-        self.mine = mine
+        self.mine = mine
\ No newline at end of file