level upgrade step

engine/src/game/ResourceGenerator.ts

@@ -89,20 +89,27 @@ export class ResourceGenerator {
         return this.rule.upgradePrice(level ?? this.level, this.game);
     }
 
-    public upgradableToLevel(limit: number = 100000): number {
+    public upgradeLevelsAvailable(step: number | 'max' = 1): number {
 
-        for (let idx = 0; idx < limit; idx++) {
-            const level = this.level + idx;
-            if (!this.rule.isUpgradable(level, this.game, this.getUpgradePrice(level)))
-                return level;
+        if (step === 'max') {
+            for (let idx = 0; idx < 1000; idx++) {
+                const level = this.level + idx;
+                if (!this.rule.isUpgradable(level, this.game, this.getUpgradePrice(level)))
+                    return idx;
+            }
+        }
+        else {
+            const level = this.level + step - 1;
+            if (this.rule.isUpgradable(level, this.game, this.getUpgradePrice(level)))
+                return step;
         }
 
-        return -1;
+        return 0;
     }
 
-    public get isUpgradable(): boolean {
-        return this.rule.isUpgradable(this.level, this.game, this.getUpgradePrice());
-    }
+    // public get isUpgradable(): boolean {
+    //     return this.rule.isUpgradable(this.level, this.game, this.getUpgradePrice());
+    // }
 
     public getGain(level?: number): ResourceSet {
         return this.rule.generationGain(level ?? this.level, this.game);