Use locale decimal separator on belt reader display (#816)

* use locale decimal separator on belt reader display

* rename formatter method

src/js/core/utils.js

@@ -558,7 +558,16 @@ export function formatSeconds(secs) {
 }
 
 /**
- * Formats a number like 2.5 to "2.5 items / s"
+ * Formats a number like 2.51 to "2.5"
+ * @param {number} speed
+ * @param {string=} separator The decimal separator for numbers like 50.1 (separator='.')
+ */
+export function round1DigitLocalized(speed, separator = T.global.decimalSeparator) {
+    return round1Digit(speed).toString().replace(".", separator);
+}
+
+/**
+ * Formats a number like 2.51 to "2.51 items / s"
  * @param {number} speed
  * @param {boolean=} double
  * @param {string=} separator The decimal separator for numbers like 50.1 (separator='.')

src/js/game/systems/item_processor_overlays.js

@@ -1,6 +1,6 @@
 import { globalConfig } from "../../core/config";
 import { Loader } from "../../core/loader";
-import { smoothPulse } from "../../core/utils";
+import { round1DigitLocalized, smoothPulse } from "../../core/utils";
 import { enumItemProcessorRequirements, enumItemProcessorTypes } from "../components/item_processor";
 import { Entity } from "../entity";
 import { GameSystem } from "../game_system";
@@ -92,7 +92,7 @@ export class ItemProcessorOverlaysSystem extends GameSystem {
         parameters.context.textAlign = "center";
         parameters.context.font = "bold 10px GameFont";
         parameters.context.fillText(
-            "" + Math.round(readerComp.lastThroughput * 10) / 10,
+            round1DigitLocalized(readerComp.lastThroughput),
             (staticComp.origin.x + 0.5) * globalConfig.tileSize,
             (staticComp.origin.y + 0.62) * globalConfig.tileSize
         );