Updated to use inheritance

src/main/resources/types.json

 [
   {
-    "name": "blue_drone",
-    "sprite": {
-      "image": "blue/enemyBlue1",
-      "scale": 0.25
-    },
+    "name": "abstract_drone",
     "properties": {
       "movement": 2,
       "health": 10,
@@ -18,16 +14,11 @@
     },
     "_actions": [
       "MoveAction",
-      "RangeAttackAction",
-      "BuildAction[blue_base]"
+      "RangeAttackAction"
     ]
   },
   {
-    "name": "blue_worker",
-    "sprite": {
-      "image": "blue/enemyBlue4",
-      "scale": 0.25
-    },
+    "name": "abstract_worker",
     "properties": {
       "movement": 2,
       "health": 10,
@@ -41,16 +32,12 @@
     },
     "_actions": [
       "MoveAction",
-      "RangeAttackAction",
-      "BuildAction[blue_base]"
+      "RangeAttackAction"
     ]
   },
   {
-    "name": "blue_base",
-    "sprite": {
-      "image": "blue/ufoBlue",
-      "scale": 0.25
-    },
+    "name": "abstract_base",
+
     "properties": {
       "controlSignal": 10,
       "movement": 0,
@@ -65,58 +52,65 @@
     }
   },
   {
-    "name": "red_drone",
+    "name": "blue_drone",
+    "_extends": "abstract_drone",
     "sprite": {
-      "image": "red/enemyRed1",
+      "image": "blue/enemyBlue1",
+      "scale": 0.25
+    }
+  },
+  {
+    "name": "blue_worker",
+    "_extends": "abstract_worker",
+    "sprite": {
+      "image": "blue/enemyBlue4",
       "scale": 0.25
     },
-    "properties": {
-      "movement": 2,
-      "health": 10,
-      "attackRange": 2,
-      "attackDamage": 5,
-      "defence": 2
+    "_actions": [
+      "BuildAction[blue_base]"
+    ]
+  },
+  {
+    "name": "blue_base",
+    "_extends": "abstract_base",
+    "sprite": {
+      "image": "blue/ufoBlue",
+      "scale": 0.25
     },
-    "cost": {
-      "metal": 5,
-      "gold": 10
+    "_actions":[
+      "BuildAction[blue_worker]",
+      "BuildAction[blue_drone]"
+    ]
+  },
+  {
+    "name": "red_drone",
+    "_extends": "abstract_drone",
+    "sprite": {
+      "image": "red/enemyRed1",
+      "scale": 0.25
     }
   },
   {
     "name": "red_worker",
+    "_extends": "abstract_worker",
     "sprite": {
       "image": "red/enemyRed4",
       "scale": 0.25
     },
-    "properties": {
-      "movement": 2,
-      "health": 10,
-      "attackRange": 2,
-      "attackDamage": 5,
-      "defence": 2
-    },
-    "cost": {
-      "metal": 5,
-      "gold": 10
-    }
+    "_actions": [
+      "BuildAction[red_base]"
+    ]
   },
   {
     "name": "red_base",
+    "_extends": "abstract_base",
     "sprite": {
       "image": "red/ufoRed",
       "scale": 0.25
     },
-    "properties": {
-      "controlSignal": 10,
-      "movement": 0,
-      "health": 10,
-      "attackRange": 2,
-      "attackDamage": 5,
-      "defence": 2
-    },
-    "cost": {
-      "metal": 5,
-      "gold": 10
-    }
+    "_actions":[
+      "BuildAction[red_worker]",
+      "BuildAction[red_drone]"
+    ]
   }
 ]
\ No newline at end of file