From 47fca5625d3ca1bd72ed084503ff5e6458274e79 Mon Sep 17 00:00:00 2001
From: alanwatsonforster <68709385+alanwatsonforster@users.noreply.github.com>
Date: Fri, 22 Sep 2023 18:31:37 -0600
Subject: [PATCH] Internal checks should be assertions.

---
 airpower/aircraft.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/airpower/aircraft.py b/airpower/aircraft.py
index de5807f3..73233185 100644
--- a/airpower/aircraft.py
+++ b/airpower/aircraft.py
@@ -355,9 +355,9 @@ def next(self, actions):
         break
 
     assert self._ifp <= self._nfp
-    aphex.checkisvalidposition(self._x, self._y)
-    aphex.checkisvalidfacing(self._x, self._y, self._facing)
-    apaltitude.checkisvalidaltitude(self._altitude)
+    assert aphex.isvalidposition(self._x, self._y)
+    assert aphex.isvalidfacing(self._x, self._y, self._facing)
+    assert apaltitude.isvalidaltitude(self._altitude)
 
     if self._ifp == self._nfp: