From 87f0217588e9b948c3a0cb69f72db3f94a7893ec Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Mon, 18 Nov 2024 10:29:13 +0300
Subject: [PATCH] engine: client: add cl_showcmd, yet another debugging aid to
 print current usercmd state

---
 engine/client/cl_scrn.c | 67 ++++++++++++++++++++++++++++++++++++++++-
 engine/client/cl_view.c |  1 +
 engine/client/client.h  |  1 +
 3 files changed, 68 insertions(+), 1 deletion(-)

diff --git a/engine/client/cl_scrn.c b/engine/client/cl_scrn.c
index c2bd927e..ba8967e5 100644
--- a/engine/client/cl_scrn.c
+++ b/engine/client/cl_scrn.c
@@ -33,6 +33,7 @@ static CVAR_DEFINE_AUTO( net_speeds, "0", FCVAR_ARCHIVE, "show network packets"
 static CVAR_DEFINE_AUTO( cl_showfps, "0", FCVAR_ARCHIVE, "show client fps" );
 static CVAR_DEFINE_AUTO( cl_showpos, "0", FCVAR_ARCHIVE, "show local player position and velocity" );
 static CVAR_DEFINE_AUTO( cl_showents, "0", FCVAR_ARCHIVE | FCVAR_CHEAT, "show entities information (largely undone)" );
+static CVAR_DEFINE_AUTO( cl_showcmd, "0", 0, "visualize usercmd button presses" );
 
 typedef struct
 {
@@ -197,12 +198,75 @@ void SCR_DrawEnts( void )
 			screen[0] += 0.5f * refState.width;
 			screen[1] += 0.5f * refState.height;
 
-
 			Con_DrawString( screen[0], screen[1], msg, color );
 		}
 	}
 }
 
+/*
+==============
+SCR_DrawUserCmd
+
+another debugging aids, shows pressed buttons
+==============
+*/
+void SCR_DrawUserCmd( void )
+{
+	runcmd_t *pcmd = &cl.commands[( cls.netchan.outgoing_sequence - 1 ) & CL_UPDATE_MASK];
+	struct
+	{
+		int mask;
+		const char *name;
+	} buttons[16] =
+	{
+	{ IN_ATTACK, "attack" },
+	{ IN_JUMP, "jump" },
+	{ IN_DUCK, "duck" },
+	{ IN_FORWARD, "forward" },
+	{ IN_BACK, "back" },
+	{ IN_USE, "use" },
+	{ IN_CANCEL, "cancel" },
+	{ IN_LEFT, "left" },
+	{ IN_RIGHT, "right" },
+	{ IN_MOVELEFT, "moveleft" },
+	{ IN_MOVERIGHT, "moveright" },
+	{ IN_ATTACK2, "attack2" },
+	{ IN_RUN, "run" },
+	{ IN_RELOAD, "reload" },
+	{ IN_ALT1, "alt1" },
+	{ IN_SCORE, "score" },
+	};
+	cl_font_t *font = Con_GetCurFont();
+	string msg;
+	int i, ypos = 100;
+
+	if( cls.state != ca_active || !cl_showcmd.value )
+		return;
+
+	for( i = 0; i < ARRAYSIZE( buttons ); i++ )
+	{
+		rgba_t rgba;
+
+		rgba[0] = FBitSet( pcmd->cmd.buttons, buttons[i].mask ) ? 0 : 255;
+		rgba[1] = FBitSet( pcmd->cmd.buttons, buttons[i].mask ) ? 255 : 0;
+		rgba[2] = 0;
+		rgba[3] = 255;
+
+		Con_DrawString( 100, ypos, buttons[i].name, rgba );
+
+		ypos += font->charHeight;
+	}
+
+	Q_snprintf( msg, sizeof( msg ),
+		"F/S/U: %g %g %g\n"
+		"impulse: %u\n"
+		"msec: %u",
+		pcmd->cmd.forwardmove, pcmd->cmd.sidemove, pcmd->cmd.upmove,
+		pcmd->cmd.impulse,
+		pcmd->cmd.msec );
+	Con_DrawString( 100, ypos, msg, g_color_table[7] );
+}
+
 /*
 ==============
 SCR_NetSpeeds
@@ -834,6 +898,7 @@ void SCR_Init( void )
 	Cvar_RegisterVariable( &net_speeds );
 	Cvar_RegisterVariable( &cl_showfps );
 	Cvar_RegisterVariable( &cl_showpos );
+	Cvar_RegisterVariable( &cl_showcmd );
 #ifdef _DEBUG
 	Cvar_RegisterVariable( &cl_showents );
 #endif // NDEBUG
diff --git a/engine/client/cl_view.c b/engine/client/cl_view.c
index bcb44978..e3b8b21d 100644
--- a/engine/client/cl_view.c
+++ b/engine/client/cl_view.c
@@ -534,6 +534,7 @@ void V_PostRender( void )
 		SCR_DrawPos();
 		SCR_DrawEnts();
 		SCR_DrawNetGraph();
+		SCR_DrawUserCmd();
 		SV_DrawOrthoTriangles();
 		CL_DrawDemoRecording();
 		CL_DrawHUD( CL_CHANGELEVEL );
diff --git a/engine/client/client.h b/engine/client/client.h
index 58ec1177..3adac361 100644
--- a/engine/client/client.h
+++ b/engine/client/client.h
@@ -962,6 +962,7 @@ void SCR_RSpeeds( void );
 void SCR_DrawFPS( int height );
 void SCR_DrawPos( void );
 void SCR_DrawEnts( void );
+void SCR_DrawUserCmd( void );
 
 //
 // cl_netgraph.c