From 955bf3eead42fb2d89dc53123045fddd739e7bc0 Mon Sep 17 00:00:00 2001
From: Jonathan Lopez <jonathanglopez@gmail.com>
Date: Thu, 28 Apr 2022 14:22:58 -0400
Subject: [PATCH 1/2] Create new HeatRay struct to combat aliens

---
 exercises/047_methods.zig | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/exercises/047_methods.zig b/exercises/047_methods.zig
index b967ab8..a6367e9 100644
--- a/exercises/047_methods.zig
+++ b/exercises/047_methods.zig
@@ -55,10 +55,15 @@ const Alien = struct {
             .health = strength * 5,
         };
     }
+};
+
+// Your trusty weapon. Zap those aliens!
+const HeatRay = struct {
+    damage: u8,
 
     // We love this method:
-    pub fn zap(self: *Alien, damage: u8) void {
-        self.health -= if (damage >= self.health) self.health else damage;
+    pub fn zap(self: *HeatRay, alien: *Alien) void {
+        alien.health -= if (self.damage >= alien.health) alien.health else self.damage;
     }
 };
 
@@ -74,7 +79,7 @@ pub fn main() void {
     };
 
     var aliens_alive = aliens.len;
-    var heat_ray_strength: u8 = 7; // We've been given a heat ray weapon.
+    var heat_ray = HeatRay{ .damage = 7 }; // We've been given a heat ray weapon.
 
     // We'll keep checking to see if we've killed all the aliens yet.
     while (aliens_alive > 0) {
@@ -84,7 +89,7 @@ pub fn main() void {
         for (aliens) |*alien| {
 
             // *** Zap the Alien Here! ***
-            ???.zap(heat_ray_strength);
+            ???.zap(???);
 
             // If the alien's health is still above 0, it's still alive.
             if (alien.health > 0) aliens_alive += 1;

From c3c610acf07298eec313ebf1923defdac7b3de67 Mon Sep 17 00:00:00 2001
From: Dave Gauer <dave@ratfactor.com>
Date: Sun, 31 Jul 2022 11:32:51 -0400
Subject: [PATCH 2/2] Update ex 047 comment and patch

---
 exercises/047_methods.zig         | 2 +-
 patches/patches/047_methods.patch | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/exercises/047_methods.zig b/exercises/047_methods.zig
index a6367e9..048cfa0 100644
--- a/exercises/047_methods.zig
+++ b/exercises/047_methods.zig
@@ -88,7 +88,7 @@ pub fn main() void {
         // Loop through every alien...
         for (aliens) |*alien| {
 
-            // *** Zap the Alien Here! ***
+            // *** Zap the alien with the heat ray here! ***
             ???.zap(???);
 
             // If the alien's health is still above 0, it's still alive.
diff --git a/patches/patches/047_methods.patch b/patches/patches/047_methods.patch
index 81e733b..edd9db1 100644
--- a/patches/patches/047_methods.patch
+++ b/patches/patches/047_methods.patch
@@ -1,4 +1,4 @@
-87c87
-<             ???.zap(heat_ray_strength);
+92c92
+<             ???.zap(???);
 ---
->             alien.zap(heat_ray_strength);
+>             heat_ray.zap(alien);