Phase 4: Mana Flow effects

src/lib/game/hooks/useGameDerived.ts

@@ -63,8 +63,13 @@ export function useManaStats() {
     ? Math.floor(maxMana / 100) * 0.1
     : 0;
   
+  // Mana Waterfall bonus
+  const manaWaterfallBonus = hasSpecial(upgradeEffects, SPECIAL_EFFECTS.MANA_WATERFALL)
+    ? Math.floor(maxMana / 100) * 0.25
+    : 0;
+  
   // Final effective regen
-  const effectiveRegen = (effectiveRegenWithSpecials + manaCascadeBonus) * meditationMultiplier;
+  const effectiveRegen = (effectiveRegenWithSpecials + manaCascadeBonus + manaWaterfallBonus) * meditationMultiplier;
   
   return {
     upgradeEffects,
@@ -75,11 +80,16 @@ export function useManaStats() {
     incursionStrength,
     effectiveRegenWithSpecials,
     manaCascadeBonus,
+    manaWaterfallBonus,
     effectiveRegen,
     hasSteadyStream: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.STEADY_STREAM),
     hasManaTorrent: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.MANA_TORRENT),
     hasDesperateWells: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.DESPERATE_WELLS),
     hasManaEcho: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.MANA_ECHO),
+    hasManaWaterfall: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.MANA_WATERFALL),
+    hasFlowSurge: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.FLOW_SURGE),
+    hasManaOverflow: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.MANA_OVERFLOW),
+    hasEternalFlow: hasSpecial(upgradeEffects, SPECIAL_EFFECTS.ETERNAL_FLOW),
   };
 }