More verbose errors

src/js/core/sprites.js

@@ -91,14 +91,17 @@ export class AtlasSprite extends BaseSprite {
 
         const link = this.linksByResolution[ORIGINAL_SPRITE_SCALE];
 
-        assert(
+        if (!link) {
-            link,
+            throw new Error(
-            "Link not known: " +
+                "draw: Link for " +
-                ORIGINAL_SPRITE_SCALE +
+                    this.spriteName +
-                " (having " +
+                    " not known: " +
-                Object.keys(this.linksByResolution) +
+                    ORIGINAL_SPRITE_SCALE +
-                ")"
+                    " (having " +
-        );
+                    Object.keys(this.linksByResolution) +
+                    ")"
+            );
+        }
 
         const width = w || link.w;
         const height = h || link.h;
@@ -166,7 +169,15 @@ export class AtlasSprite extends BaseSprite {
         const link = this.linksByResolution[scale];
 
         if (!link) {
-            assert(false, `Link not known: ${scale} (having ${Object.keys(this.linksByResolution)})`);
+            throw new Error(
+                "drawCached: Link for " +
+                    this.spriteName +
+                    " at scale " +
+                    scale +
+                    " not known (having " +
+                    Object.keys(this.linksByResolution) +
+                    ")"
+            );
         }
 
         const scaleW = w / link.w;
@@ -244,7 +255,15 @@ export class AtlasSprite extends BaseSprite {
         const link = this.linksByResolution[scale];
 
         if (!link) {
-            assert(false, `Link not known: ${scale} (having ${Object.keys(this.linksByResolution)})`);
+            throw new Error(
+                "drawCachedWithClipRect: Link for " +
+                    this.spriteName +
+                    " at scale " +
+                    scale +
+                    " not known (having " +
+                    Object.keys(this.linksByResolution) +
+                    ")"
+            );
         }
 
         const scaleW = w / link.w;
@@ -298,6 +317,17 @@ export class AtlasSprite extends BaseSprite {
     getAsHTML(w, h) {
         const link = this.linksByResolution["0.5"];
 
+        if (!link) {
+            throw new Error(
+                "getAsHTML: Link for " +
+                    this.spriteName +
+                    " at scale 0.5" +
+                    " not known (having " +
+                    Object.keys(this.linksByResolution) +
+                    ")"
+            );
+        }
+
         // Find out how much we have to scale it so that it fits
         const scaleX = w / link.w;
         const scaleY = h / link.h;