Added Sign text caching

+Added the Sign.text field, assigned when the object is created
*Modified SignRenderer to use Sign.text instead of looking for the text on every render
*Sign texts are now transferred to Signal Signs when the Sign is assigned to a Signal

src/components/map/object-renderers/SignRenderer.js

@@ -31,14 +31,8 @@ export default function SignRenderer(props) {
 
 function SignTextRenderer(props) {
     const { object } = props;
-
-    const textSources = !!object.def.text ? Array.isArray(object.def.text) ? object.def.text : [object.def.text] : [];
-    let text = null;
-    for(const source of textSources) {
-        text = getSignText(object, source);
-        if(text) break;
-    }
-
+    if(!object.text) return;
+    
     const x = object.def.textOffsetX || 0;
     const y = object.def.textOffsetY || 0;
 
@@ -50,21 +44,7 @@ function SignTextRenderer(props) {
             textAnchor="middle"
             dominantBaseline="central"
         >
-            {text}
+            {object.text}
         </text>
     );
 }
-
-function getSignText(object, source) {
-    switch(source) {
-        case "fun":
-            return object.def.textFun ? object.def.textFun(object) : null;
-        case "data":
-            return object.getPrintableSignData();
-        case "static":
-            return object.def.staticText ?? null;
-        default:
-            console.warn(`Unknown sign ${object.id} text source: ${source}`);
-            return null;
-    }
-}

src/model/attach-signs.js

@@ -56,7 +56,7 @@ function attach(sign, signal) {
     if(!attachAs || !signal.signal_elements) return;
 
     sign.attached_skip_rendering = true;
-    signal.signal_elements.signs[attachAs] = true;
+    signal.signal_elements.signs[attachAs] = sign.text ? { text: sign.text } : true;
 }
 
 export function attachSigns(scenery) {

src/model/track-objects/sign.js

@@ -7,6 +7,7 @@ export default class Sign extends TrackObject {
     type = "Sign";
     data;
     def;
+    text = null;
     attached_to = null;
     attached_skip_rendering = false;
 
@@ -15,6 +16,7 @@ export default class Sign extends TrackObject {
 
         this.data = data || null;
         this.def = Sign.getDef(name, prefab_name);
+        this._assignText();
     }
 
     getPrintableSignData() {
@@ -84,4 +86,31 @@ export default class Sign extends TrackObject {
 
         return DefinedSigns[key];
     }
+    
+    _assignText() {
+        if(!this.def?.text) return;
+
+        const textSources = Array.isArray(this.def.text) ? this.def.text : [this.def.text];
+        let text = null;
+        for(const source of textSources) {
+            text = Sign.getTextFromSource(this, source);
+            if(text) break;
+        }
+        
+        this.text = text;
+    }
+
+    static getTextFromSource(object, source) {
+        switch(source) {
+        case "fun":
+            return object.def.textFun ? object.def.textFun(object) : null;
+        case "data":
+            return object.getPrintableSignData();
+        case "static":
+            return object.def.staticText ?? null;
+        default:
+            console.warn(`Unknown sign ${object.id} text source: ${source}`);
+            return null;
+        }
+    }
 }