From a477b18ade685a8df3edbec150836a354d8fe285 Mon Sep 17 00:00:00 2001
From: Leshana <Leshana@users.noreply.github.com>
Date: Fri, 20 Mar 2020 23:44:04 -0400
Subject: [PATCH] Added mob_living.set_stat() observer

---
 code/datums/observation/stat_set.dm | 24 ++++++++++++++++++++++++
 polaris.dme                         |  1 +
 2 files changed, 25 insertions(+)
 create mode 100644 code/datums/observation/stat_set.dm

diff --git a/code/datums/observation/stat_set.dm b/code/datums/observation/stat_set.dm
new file mode 100644
index 0000000000..b980d06ecc
--- /dev/null
+++ b/code/datums/observation/stat_set.dm
@@ -0,0 +1,24 @@
+//	Observer Pattern Implementation: Stat Set
+//		Registration type: /mob/living
+//
+//		Raised when: A /mob/living changes stat, using the set_stat() proc
+//
+//		Arguments that the called proc should expect:
+//			/mob/living/stat_mob: The mob whose stat changed
+//			/old_stat: Status before the change.
+//			/new_stat: Status after the change.
+
+GLOBAL_DATUM_INIT(stat_set_event, /decl/observ/stat_set, new)
+
+/decl/observ/stat_set
+	name = "Stat Set"
+	expected_type = /mob/living
+
+/****************
+* Stat Handling *
+****************/
+/mob/living/set_stat(var/new_stat)
+	var/old_stat = stat
+	. = ..()
+	if(stat != old_stat)
+		GLOB.stat_set_event.raise_event(src, old_stat, new_stat)
diff --git a/polaris.dme b/polaris.dme
index 554931f8e9..8c1c72f871 100644
--- a/polaris.dme
+++ b/polaris.dme
@@ -294,6 +294,7 @@
 #include "code\datums\observation\observation.dm"
 #include "code\datums\observation\shuttle_added.dm"
 #include "code\datums\observation\shuttle_moved.dm"
+#include "code\datums\observation\stat_set.dm"
 #include "code\datums\observation\turf_changed.dm"
 #include "code\datums\observation\unequipped.dm"
 #include "code\datums\observation\z_moved.dm"