Implement prepull normalizer for living flame to handle specific scen…

…ario

src/analysis/retail/evoker/devastation/CombatLogParser.ts

@@ -29,6 +29,7 @@ import EngulfingBlaze from './modules/talents/EngulfingBlaze';
 import LayWaste from './modules/talents/LayWaste';
 import Iridescence from './modules/talents/Iridescence';
 import T31DevaTier from './modules/dragonflight/tier/T31DevaTier';
+import LivingFlamePrePullNormalizer from './modules/normalizers/LivingFlamePrePullNormalizer';
 
 // Shared
 import {
@@ -59,6 +60,7 @@ class CombatLogParser extends MainCombatLogParser {
     // Normalizer
     castLinkNormalizer: CastLinkNormalizer,
     essenceBurstNormalizer: EssenceBurstNormalizer,
+    livingFlamePrePullNormalizer: LivingFlamePrePullNormalizer,
 
     // features
     apls: AplCheck,

src/analysis/retail/evoker/devastation/modules/normalizers/LivingFlamePrePullNormalizer.ts

@@ -0,0 +1,54 @@
+import SPELLS from 'common/SPELLS/evoker';
+import { AnyEvent, BeginCastEvent, EventType, HasRelatedEvent } from 'parser/core/Events';
+import EventsNormalizer from 'parser/core/EventsNormalizer';
+import { BURNOUT_CONSUME } from './CastLinkNormalizer';
+import Haste from 'parser/shared/modules/Haste';
+
+/**
+ * Living flame is the most commonly pre-pull casted spell for Devastation
+ * however it often occurs that you'll start channeling it pre-pull and only
+ * the cast success event (PrePullNormalizer doesn't account for this since we don't have a way to define instant cast spells)
+ * will trigger, this messes with how we handle GCDs and makes for a messy timeline.
+ *
+ * This normalizer aims to correct those situation
+ */
+class LivingFlamePrePullNormalizer extends EventsNormalizer {
+  static dependencies = {
+    ...EventsNormalizer.dependencies,
+    haste: Haste,
+  };
+  protected haste!: Haste;
+  normalize(events: AnyEvent[]) {
+    const fixedEvents: AnyEvent[] = [];
+    let lastBeginCastEvent: BeginCastEvent | undefined;
+
+    events.forEach((event) => {
+      if (!lastBeginCastEvent) {
+        if (
+          event.type === EventType.BeginCast &&
+          event.ability.guid === SPELLS.LIVING_FLAME_CAST.id
+        ) {
+          lastBeginCastEvent = event;
+        }
+
+        if (
+          event.type === EventType.Cast &&
+          event.ability.guid === SPELLS.LIVING_FLAME_CAST.id &&
+          !HasRelatedEvent(event, BURNOUT_CONSUME)
+        ) {
+          fixedEvents.push({
+            ...event,
+            // Try to get the proper GCD time
+            timestamp: event.timestamp - 1500 / (1 + this.haste.current),
+            __modified: true,
+            prepull: true,
+          });
+          return;
+        }
+      }
+      fixedEvents.push(event);
+    });
+    return fixedEvents;
+  }
+}
+export default LivingFlamePrePullNormalizer;