From 7ffe5c3371cbc7d35814011fdf1f99e41c5bee6a Mon Sep 17 00:00:00 2001
From: stele <antonisauren@gmail.com>
Date: Fri, 27 Mar 2020 23:26:45 +0100
Subject: [PATCH] Additional moon phase

---
 moon.cpp             | 13 +++++++++----
 opengl33renderer.cpp |  5 +++++
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/moon.cpp b/moon.cpp
index df9fd7bc..fd93f3ca 100644
--- a/moon.cpp
+++ b/moon.cpp
@@ -305,10 +305,15 @@ void cMoon::irradiance() {
 
 void
 cMoon::phase() {
-
-    // calculate moon's age in days from new moon
-    float ip = normalize( ( simulation::Time.julian_day() - 2451550.1f ) / 29.530588853f );
-    m_phase = ip * 29.53f;
+	SYSTEMTIME lt;
+	GetLocalTime(&lt);
+	if ((lt.wMonth==5)&&(lt.wDay==4)) //May the forth be with you!
+		m_phase = 50;
+	else {
+		// calculate moon's age in days from new moon
+		float ip = normalize( ( simulation::Time.julian_day() - 2451550.1f ) / 29.530588853f );
+		m_phase = ip * 29.53f;
+	}
 }
 
 // normalize values to range 0...1
diff --git a/opengl33renderer.cpp b/opengl33renderer.cpp
index f179c21d..3350607f 100644
--- a/opengl33renderer.cpp
+++ b/opengl33renderer.cpp
@@ -1636,6 +1636,11 @@ bool opengl33_renderer::Render(world_environment *Environment)
 			moonv = 1.0f - 0.667f;
 			moonu = 0.333f;
 		}
+		else if (moonphase == 50) //9th slot used for easter egg
+		{
+			moonv = 1.0f - 0.667f;
+			moonu = 0.66f;
+		}
 		else
 		{
 			moonv = 1.0f - 0.0f;