Instructions for setting up schemas on AS

docs/Modders/.pages

@@ -8,4 +8,5 @@ nav:
         - Creating-a-UI-skin.md
     - Unique-parameters.md
     - uniques.md
+    - Type-checking.md
 

docs/Modders/Type-checking.md

@@ -0,0 +1,17 @@
+# Type checking
+
+Mistakes happen. Misnamed fields, things we forgot to add, or even stuff we didn't know existed.
+
+Computers can handle a lot of that themselves, so we can let them do the work to ensure that our json files are correct, by using *json schemas*.
+
+As of now, only Buildings.json has a proper schema
+
+## Using Android Studio
+
+- Double-click space, search "json schema mappings", enter
+- Click the small '+' (top, under 'language & frameworks' text)
+- Put the URL as `https://raw.githubusercontent.com/yairm210/Unciv/master/docs/Modders/schemas/buildings.json`
+- Click the '+' under the 'Schema version' text, add 'File pattern', put pattern as `*/Buildings.json`
+
+Tada! Now Android Studio will recognize all Buildings.json files as belonging to that schema, and will warn you of inconsistencies!
+

docs/Modders/schemas/buildings.json

@@ -2,15 +2,15 @@
   "$schema": "http://json-schema.org/draft-07/schema",
   "type": "array",
   "items": {
-      "allOf": [
-          { "$ref": "#/definitions/stats"},
-          {
       "type": "object",
       "properties": {
           "name": { "type": "string" },
           "uniques": {
               "type": "array",
-                      "items": { "type": "string" },
+              "items": {
+                  "type": "string",
+                  "pattern": "^[^><]*(\\<[^>]*\\>[^><]*)*$"
+              },
               "uniqueItems": true // Can't imagine you mean to include the same thing twice
           },
           "civilopediaText": {
@@ -42,9 +42,8 @@
       "required": [
           "name"
       ],
-              "additionalProperties": false,
+      "allOf": [{ "$ref": "#/definitions/stats"}],
-          }
+      "additionalProperties": false
-      ],
   },
   "definitions": {
       "stats": {