From e3c577160409ff898665049c2b1ebcd2c605bf8a Mon Sep 17 00:00:00 2001
From: cypress <motolegacy@proton.me>
Date: Sun, 20 Oct 2024 15:33:28 -0700
Subject: [PATCH] MENU: More dynamic background changing

---
 source/menu/defs/menu_defs.qc |  1 +
 source/menu/m_menu.qc         | 24 +++++++++++++++++++++++-
 source/menu/main.qc           |  3 ++-
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/source/menu/defs/menu_defs.qc b/source/menu/defs/menu_defs.qc
index 28356f4..4f7fd12 100644
--- a/source/menu/defs/menu_defs.qc
+++ b/source/menu/defs/menu_defs.qc
@@ -6,6 +6,7 @@ float music_duration_time;
 
 string menu_background;
 float menu_changetime;
+float menu_starttime;
 
 
 float current_menu;
diff --git a/source/menu/m_menu.qc b/source/menu/m_menu.qc
index 349fd0a..b046823 100644
--- a/source/menu/m_menu.qc
+++ b/source/menu/m_menu.qc
@@ -443,9 +443,31 @@ void() Menu_DrawBackground =
 
 #ifdef MENU
 
-	sui_pic([0, 0], sui_current_frame_size(), menu_background, [1, 1, 1], 1, 1);
+	float elapsed_background_time = time - menu_starttime;
+
+	// 
+	// Slight background pan
+	//
+	float x_pos = 0 - (((sui_current_frame_size()[0] * 1.05) - sui_current_frame_size()[0]) * (elapsed_background_time/7));
+
+	sui_pic([x_pos, 0], [sui_current_frame_size()[0] * 1.05, sui_current_frame_size()[1]], menu_background, [1, 1, 1], 1, 1);
 	sui_fill([0, 0], sui_current_frame_size(), [0, 0, 0], 0.7, 0);
 
+	//
+	// Fade new images in/out
+	//
+	float alpha = 0;
+
+	if (elapsed_background_time < 1.0) {
+        alpha = 1.0f - sin((elapsed_background_time / 1.0f) * (M_PI / 2));  // Opacity from 1 -> 0
+    } else if (elapsed_background_time < 6.0f) {
+        alpha = 0.0f;
+    } else if (elapsed_background_time < 7.0f) {
+        alpha = sin(((elapsed_background_time - 6.0f) / 1.0f) * (M_PI / 2));  // Opacity from 0 -> 1
+    }
+
+	sui_fill([0, 0], sui_current_frame_size(), [0, 0, 0], alpha, 0);
+
 #else
 
 	sui_fill([0, 0], sui_current_frame_size(), [0, 0, 0], 0.8, 0);
diff --git a/source/menu/main.qc b/source/menu/main.qc
index 7b748ac..501ef91 100644
--- a/source/menu/main.qc
+++ b/source/menu/main.qc
@@ -230,7 +230,8 @@ void(vector screensize) m_draw =
 	// Menu Background Changing
 	if (time > menu_changetime) {
 		menu_background = Menu_PickBackground();
-		menu_changetime = time + 5;
+		menu_changetime = time + 7;
+		menu_starttime = time;
 	}
 	
 	sui_begin(screensize_x, screensize_y);