2015 day22

1 files changed, 10 insertions, 23 deletions

diff --git a/src/2015/day22/aoc.cpp b/src/2015/day22/aoc.cpp
index c89ceac..55274e5 100644
--- a/src/2015/day22/aoc.cpp
+++ b/src/2015/day22/aoc.cpp
@@ -40,6 +40,13 @@ void start_of_each_turn (int t, wizard& me,  wizard& boss) {
     spell* s = boss.spells[i];
     if (s->tick > 0) {
       // printf("%sT[%d] %s has tick %d\n", indent(t), t, s->name, s->tick);
+      if (strcmp(s->name, "Magic Missile") == 0 && t % 2 == 0) {
+        boss.points -= s->damage;
+      }
+      if (strcmp(s->name, "Drain") == 0 && t % 2 == 0) {
+        boss.points -= s->damage;
+        me.points += s->heals;
+      }
       if (strcmp(s->name, "Shield") == 0) {
         me.armor = 7;
       }
@@ -59,26 +66,6 @@ void start_of_each_turn (int t, wizard& me,  wizard& boss) {
   }
 }
 
-void instant_effect(spell* s, wizard& me, wizard& boss) {
-  if (strcmp(s->name, "Magic Missile") == 0) {
-    boss.points -= s->damage;
-  }
-  if (strcmp(s->name, "Drain") == 0) {
-    boss.points -= s->damage;
-    me.points += s->heals;
-  }
-}
-
-void restore_effect(spell* s, wizard& me, wizard& boss) {
-  if (strcmp(s->name, "Magic Missile") == 0) {
-    boss.points += s->damage;
-  }
-  if (strcmp(s->name, "Drain") == 0) {
-    boss.points += s->damage;
-    me.points -= s->heals;
-  }
-}
-
 void save_ticks(int ticks[], spell* spells[]) {
   for(int i = 0; i < 5; i++) {
     ticks[i] = spells[i]->tick;
@@ -93,28 +80,28 @@ void undo_ticks(int ticks[], spell* spells[]) {
 
 void fight(int turn, wizard me, wizard boss, int cost, std::vector<int>& costs) {
   start_of_each_turn(turn, me, boss);
+  if (turn > 18) return; // !!! THIS IS IMPORTANT !!!
   if (turn % 2 == 1) { // my turn
+    // me.points -= 1; // part 2
     if (me.points > 0) {
       auto ss = can_spell(me);
       for(auto& s : ss) {
         // printf("%sT[%d] choose %s =============\n", indent(turn), turn, s->name);
         s->tick = s->turns;
         me.mana -= s->costs;
-        instant_effect(s, me, boss);
         int ticks[5] = {0};
         save_ticks(ticks, boss.spells);
 
         fight(turn+1, me, boss, cost + s->costs, costs);
 
         undo_ticks(ticks, boss.spells);
-        restore_effect(s, me, boss);
         me.mana += s->costs;
         s->tick = 0;
       }
     }
   } else { // boss turn
     if (boss.points <= 0) { // boss lose
-      // printf("%splayer win %d\n", indent(turn), cost);
+      // printf("%sT[%d] player win %d\n", indent(turn), turn, cost);
       costs.push_back(cost); 
     }
     else {