Add spectator HUD for A, X, R buttons

Old spectator HUD is preserved for empty game, "flying
around" mode.

src/k_hud.c

@@ -4639,6 +4639,33 @@ K_drawMiniPing (void)
 	}
 }
 
+static void K_DrawDirectorButton(INT32 idx, const char *label, patch_t *kp[2])
+{
+	const INT32 flags = V_SNAPTORIGHT | V_SLIDEIN;
+	const INT32 textflags = flags | V_6WIDTHSPACE | V_ALLOWLOWERCASE;
+
+	const UINT8 anim_duration = 16;
+	const UINT8 anim = (leveltime % (anim_duration * 2)) < anim_duration;
+
+	const INT32 x = BASEVIDWIDTH - 60;
+	const INT32 y = BASEVIDHEIGHT - 70 + (idx * 16);
+
+	V_DrawScaledPatch(x, y - 4, flags, kp[anim]);
+	V_DrawRightAlignedThinString(x - 2, y, textflags, label);
+}
+
+static void K_drawDirectorHUD(void)
+{
+	if (!LUA_HudEnabled(hud_textspectator))
+	{
+		return;
+	}
+
+	K_DrawDirectorButton(0, "Next Player", kp_button_a[0]);
+	K_DrawDirectorButton(1, "Prev Player", kp_button_x[0]);
+	K_DrawDirectorButton(2, "Director", kp_button_r);
+}
+
 static void K_drawDistributionDebugger(void)
 {
 	itemroulette_t rouletteData = {0};
@@ -4957,6 +4984,11 @@ void K_drawKartHUD(void)
 		K_drawMiniPing();
 	}
 
+	if (displayplayers[viewnum] != g_localplayers[viewnum])
+	{
+		K_drawDirectorHUD();
+	}
+
 	if (cv_kartdebugdistribution.value)
 		K_drawDistributionDebugger();
 

src/st_stuff.c

@@ -1095,6 +1095,8 @@ void ST_preLevelTitleCardDrawer(void)
 //
 static void ST_overlayDrawer(void)
 {
+	const UINT8 viewnum = R_GetViewNumber();
+
 	// hu_showscores = auto hide score/time/rings when tab rankings are shown
 	if (!(hu_showscores && (netgame || multiplayer)))
 	{
@@ -1135,7 +1137,7 @@ static void ST_overlayDrawer(void)
 
 	if (!hu_showscores && netgame && !mapreset)
 	{
-		if (stplyr->spectator && LUA_HudEnabled(hud_textspectator))
+		if (stplyr->spectator && displayplayers[viewnum] == g_localplayers[viewnum] && LUA_HudEnabled(hud_textspectator))
 		{
 			const char *itemtxt = M_GetText("Item - Join Game");