From a688d94e9dd7c227b1eb9391ea52bcdd8c82150c Mon Sep 17 00:00:00 2001
From: Wizzard <25581244+Wizzard@users.noreply.toomuchslop.com>
Date: Tue, 19 Sep 2023 16:41:13 -0400
Subject: [PATCH] Rainbow watermark + cvar dz_watermark_rainbow

---
 src/cvars.c         |  2 ++
 src/hooks.c         | 21 ++++++++++++++++++++-
 src/include/cvars.h |  1 +
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/cvars.c b/src/cvars.c
index 3c2e485..7a7ae1a 100644
--- a/src/cvars.c
+++ b/src/cvars.c
@@ -13,6 +13,7 @@ DECL_CVAR(crosshair);
 DECL_CVAR(tracers);
 DECL_CVAR(clmove);
 DECL_CVAR(watermark);
+DECL_CVAR(watermark_rainbow);
 
 bool cvars_init(void) {
     REGISTER_CVAR(bhop, 1);
@@ -25,6 +26,7 @@ bool cvars_init(void) {
     REGISTER_CVAR(tracers, 1);
     REGISTER_CVAR(clmove, 0);
     REGISTER_CVAR(watermark, 1);
+    REGISTER_CVAR(watermark_rainbow, 1);
 
     return true;
 }
diff --git a/src/hooks.c b/src/hooks.c
index 716d753..7b786bb 100644
--- a/src/hooks.c
+++ b/src/hooks.c
@@ -71,12 +71,31 @@ void h_CL_CreateMove(float frametime, usercmd_t* cmd, int active) {
 
 /*----------------------------------------------------------------------------*/
 
+rgb_t rainbow_color(float time) {
+    const float frequency = 0.1f;
+
+    unsigned char r = (sin(frequency * time + 0) * 127.5f + 127.5f);
+    unsigned char g = (sin(frequency * time + 2.0f) * 127.5f + 127.5f);
+    unsigned char b = (sin(frequency * time + 4.0f) * 127.5f + 127.5f);
+
+    return (rgb_t){ r, g, b };
+}
+
 int h_HUD_Redraw(float time, int intermission) {
     int ret = ORIGINAL(HUD_Redraw, time, intermission);
 
     if (dz_watermark->value) {
+        /* Determine the color for the watermark */
+        rgb_t color;
+
+        if (dz_watermark_rainbow->value) {
+            color = rainbow_color(time);
+        } else {
+            color = (rgb_t){ 0, 255, 255 }; // default color
+        }
+
         /* Watermark */
-        engine_draw_text(5, 5, "https://git.deadzone.lol/Wizzard/goldsource-cheat", (rgb_t){ 0, 255, 255 });
+        engine_draw_text(5, 5, "https://git.deadzone.lol/Wizzard/goldsource-cheat", color);
     }
 
     esp();
diff --git a/src/include/cvars.h b/src/include/cvars.h
index c3ec99e..f2cfa4e 100644
--- a/src/include/cvars.h
+++ b/src/include/cvars.h
@@ -40,6 +40,7 @@ DECL_CVAR_EXTERN(crosshair);
 DECL_CVAR_EXTERN(tracers);
 DECL_CVAR_EXTERN(clmove);
 DECL_CVAR_EXTERN(watermark);
+DECL_CVAR_EXTERN(watermark_rainbow);
 
 /*----------------------------------------------------------------------------*/