Skill rebalancing, analytic data tracking

src/playerprogress.ts

@@ -5,6 +5,7 @@ export class PlayerProgress {
   #stats: Record<Stat, number>
   #exp: number;
   #blood: number
+  #itemsPurloined: number
   #skillsLearned: number[]  // use the raw ID representation for indexOf
   #untrimmedSkillsAvailable: Skill[]
 
@@ -17,6 +18,7 @@ export class PlayerProgress {
     };
     this.#exp = 0;
     this.#blood = 0;
+    this.#itemsPurloined = 0;
     this.#skillsLearned = [];
     this.#untrimmedSkillsAvailable = []
 
@@ -74,6 +76,14 @@ export class PlayerProgress {
     return true;
   }
 
+  purloinItem() {
+    this.#itemsPurloined += 1;
+  }
+
+  getItemsPurloined() {
+    return this.#itemsPurloined
+  }
+
   add(stat: Stat, amount: number) {
     if (amount != Math.floor(amount)) {
       throw `stat increment must be integer: ${amount}`