From 8eed3ee9a966873d4f7cd069f6b879c1dcf94ec6 Mon Sep 17 00:00:00 2001
From: Andrei Drexler <makro@rq3.com>
Date: Sun, 24 Dec 2023 11:21:19 +0100
Subject: [PATCH] Scroll console with look stick

---
 Quake/console.c | 27 +++++++++++++++++++++++++++
 Quake/console.h |  1 +
 Quake/in_sdl.c  | 36 +++++++++++++++++++++++++++++++++++-
 Quake/keys.c    | 10 ++--------
 4 files changed, 65 insertions(+), 9 deletions(-)

diff --git a/Quake/console.c b/Quake/console.c
index d40616bca..5f7efe5f4 100644
--- a/Quake/console.c
+++ b/Quake/console.c
@@ -824,6 +824,33 @@ void Con_CheckResize (void)
 }
 
 
+/*
+================
+Con_Scroll
+================
+*/
+void Con_Scroll (int lines)
+{
+	if (!lines)
+		return;
+
+	con_backscroll += lines;
+
+	if (lines > 0)
+	{
+		if (con_backscroll > con_totallines - (vid.height>>3) - 1)
+			con_backscroll = con_totallines - (vid.height>>3) - 1;
+	}
+	else
+	{
+		if (con_backscroll < 0)
+			con_backscroll = 0;
+	}
+
+	Con_ForceMouseMove ();
+}
+
+
 /*
 ================
 Con_Init
diff --git a/Quake/console.h b/Quake/console.h
index 119916326..acb8f4d5c 100644
--- a/Quake/console.h
+++ b/Quake/console.h
@@ -35,6 +35,7 @@ extern byte *con_chars;
 extern char con_lastcenterstring[]; //johnfitz
 
 void Con_CheckResize (void);
+void Con_Scroll (int lines);
 void Con_Init (void);
 void Con_DrawConsole (int lines, qboolean drawinput);
 void Con_Printf (const char *fmt, ...) FUNC_PRINTF(1,2);
diff --git a/Quake/in_sdl.c b/Quake/in_sdl.c
index 8ed9e259e..03653bb70 100644
--- a/Quake/in_sdl.c
+++ b/Quake/in_sdl.c
@@ -584,7 +584,41 @@ void IN_Commands (void)
 		IN_JoyKeyEvent(joy_axisstate.axisvalue[SDL_CONTROLLER_AXIS_LEFTY] < -stickthreshold, newaxisstate.axisvalue[SDL_CONTROLLER_AXIS_LEFTY] < -stickthreshold, K_UPARROW, &joy_emulatedkeytimer[2]);
 		IN_JoyKeyEvent(joy_axisstate.axisvalue[SDL_CONTROLLER_AXIS_LEFTY] > stickthreshold,  newaxisstate.axisvalue[SDL_CONTROLLER_AXIS_LEFTY] > stickthreshold, K_DOWNARROW, &joy_emulatedkeytimer[3]);
 	}
-	
+
+	// scroll console with look stick
+	if (key_dest == key_console)
+	{
+		const float scrollthreshold = 0.1f;
+		const float maxscrollspeed = 72.f; // lines per second
+		const float scrollinterval = 1.f / maxscrollspeed; 
+		static double timer = 0.0;
+		joyaxis_t raw, deadzone, eased;
+		float scale;
+
+		raw.x = newaxisstate.axisvalue[joy_swapmovelook.value ? SDL_CONTROLLER_AXIS_LEFTX : SDL_CONTROLLER_AXIS_RIGHTX];
+		raw.y = newaxisstate.axisvalue[joy_swapmovelook.value ? SDL_CONTROLLER_AXIS_LEFTY : SDL_CONTROLLER_AXIS_RIGHTY];
+		deadzone = IN_ApplyDeadzone (raw, joy_deadzone_look.value, joy_outer_threshold_look.value);
+		eased = IN_ApplyEasing (deadzone, joy_exponent.value);
+		if (joy_invert.value)
+			eased.y = -eased.y;
+
+		scale = fabs (eased.y);
+		if (scale > scrollthreshold)
+		{
+			timer -= scale * host_rawframetime;
+			if (timer < 0.0)
+			{
+				int ticks = (int) ceil (-timer / scrollinterval);
+				timer += ticks * scrollinterval;
+				Con_Scroll (eased.y < 0.0f ? ticks : -ticks);
+			}
+		}
+		else
+		{
+			timer = 0.0;
+		}
+	}
+
 	// emit emulated keys for the analog triggers
 	IN_JoyKeyEvent(joy_axisstate.axisvalue[SDL_CONTROLLER_AXIS_TRIGGERLEFT] > triggerthreshold,  newaxisstate.axisvalue[SDL_CONTROLLER_AXIS_TRIGGERLEFT] > triggerthreshold, K_LTRIGGER, &joy_emulatedkeytimer[4]);
 	IN_JoyKeyEvent(joy_axisstate.axisvalue[SDL_CONTROLLER_AXIS_TRIGGERRIGHT] > triggerthreshold, newaxisstate.axisvalue[SDL_CONTROLLER_AXIS_TRIGGERRIGHT] > triggerthreshold, K_RTRIGGER, &joy_emulatedkeytimer[5]);
diff --git a/Quake/keys.c b/Quake/keys.c
index 5372ae036..106c26c30 100644
--- a/Quake/keys.c
+++ b/Quake/keys.c
@@ -383,18 +383,12 @@ void Key_Console (int key)
 
 	case K_PGUP:
 	case K_MWHEELUP:
-		con_backscroll += keydown[K_CTRL] ? ((con_vislines>>3) - 4) : 2;
-		if (con_backscroll > con_totallines - (vid.height>>3) - 1)
-			con_backscroll = con_totallines - (vid.height>>3) - 1;
-		Con_ForceMouseMove ();
+		Con_Scroll (keydown[K_CTRL] ? ((con_vislines>>3) - 4) : 2);
 		return;
 
 	case K_PGDN:
 	case K_MWHEELDOWN:
-		con_backscroll -= keydown[K_CTRL] ? ((con_vislines>>3) - 4) : 2;
-		if (con_backscroll < 0)
-			con_backscroll = 0;
-		Con_ForceMouseMove ();
+		Con_Scroll (keydown[K_CTRL] ? -((con_vislines>>3) - 4) : -2);
 		return;
 
 	case K_LEFTARROW: