Add the ability to play Tutorial courses from the Challenges menu

- Only works in parties of 1
- Currently intentionally disabled for other types of Match Race, as they tend to have too many options and I don't want to risk infinite menu loops

src/k_menudraw.c

@@ -7346,6 +7346,8 @@ static void M_DrawChallengePreview(INT32 x, INT32 y)
 			const char *gtname = "Find your prize...";
 			UINT16 mapnum = M_UnlockableMapNum(ref);
 
+			y = BASEVIDHEIGHT-(9+3);
+
 			if (mapnum >= nummapheaders
 				|| mapheaderinfo[mapnum] == NULL
 				|| mapheaderinfo[mapnum]->menuflags & LF2_HIDEINMENU)
@@ -7389,7 +7391,17 @@ static void M_DrawChallengePreview(INT32 x, INT32 y)
 						guessgt = GT_SPECIAL;
 					}
 
-					if (guessgt == GT_SPECIAL && !M_SecretUnlocked(SECRET_SPECIALATTACK, true))
+					if (setup_numplayers <= 1 && guessgt == GT_TUTORIAL)
+					{
+						// Only for 1p
+						K_DrawGameControl(
+							1, y, 0,
+							"<a_animated> <orange>Play Tutorial",
+							0, TINY_FONT, 0
+						);
+						gtname = NULL;
+					}
+					else if (guessgt == GT_SPECIAL && !M_SecretUnlocked(SECRET_SPECIALATTACK, true))
 					{
 						gtname = "???";
 					}
@@ -7409,7 +7421,10 @@ static void M_DrawChallengePreview(INT32 x, INT32 y)
 					NULL);
 			}
 
-			V_DrawThinString(1, BASEVIDHEIGHT-(9+3), 0, gtname);
+			if (gtname)
+			{
+				V_DrawThinString(1, y, 0, gtname);
+			}
 
 			break;
 		}
@@ -7589,13 +7604,13 @@ static void M_DrawChallengePreview(INT32 x, INT32 y)
 					pushed = strcmp(song, mapheaderinfo[map]->encoremusname[musicid]) == 0;
 				}
 
-				if (!pushed)
+				K_DrawGameControl(
-					K_DrawGameControl(x, y, 0, "<l> <sky>E Side", 0, TINY_FONT, 0);
+					x, y, 0,
-				else
+					(!pushed)
-					K_DrawGameControl(x, y, 0, "<l_pressed> <gray>E Side", 0, TINY_FONT, 0);
+						? "<l> <magenta>E Side"
-				// K_drawButton(x&FRACUNIT, y*FRACUNIT, 0, kp_button_l, pushed);
+						: "<l_pressed> <gray>E Side",
-				// x += SHORT(kp_button_l[0]->width);
+					0, TINY_FONT, 0
-				// V_DrawThinString(x, y + 1, (pushed ? V_GRAYMAP : highlightflags), "E Side");
+				);
 
 				x = 8;
 				y -= 10;
@@ -7614,13 +7629,13 @@ static void M_DrawChallengePreview(INT32 x, INT32 y)
 					pushed = strcmp(song, mapheaderinfo[map]->musname[musicid]) == 0;
 				}
 
-				if (!pushed)
+				K_DrawGameControl(
-					K_DrawGameControl(x, y, 0, "<a> <sky>Play CD", 0, TINY_FONT, 0);
+					x, y, 0,
-				else
+					(!pushed)
-					K_DrawGameControl(x, y, 0, "<a_pressed> <gray>Play CD", 0, TINY_FONT, 0);
+						? "<a> <sky>Play CD"
-				// K_drawButton(x*FRACUNIT, y*FRACUNIT, 0, kp_button_a[1], pushed);
+						: "<a_pressed> <gray>Play CD",
-				// x += SHORT(kp_button_a[1][0]->width);
+					0, TINY_FONT, 0
-				// V_DrawThinString(x, y + 1, (pushed ? V_GRAYMAP : highlightflags), "Play CD");
+				);
 			}
 		}
 		default:

src/menus/extras-challenges.c

@@ -1155,8 +1155,51 @@ boolean M_ChallengesInputs(INT32 ch)
 		if (challengesmenu.currentunlock < MAXUNLOCKABLES
 			&& gamedata->unlocked[challengesmenu.currentunlock])
 		{
+			unlockable_t *ref = &unlockables[challengesmenu.currentunlock];
 			switch (unlockables[challengesmenu.currentunlock].type)
 			{
+				case SECRET_MAP:
+				{
+					// Only for 1p
+					if (setup_numplayers <= 1 && M_MenuConfirmPressed(pid))
+					{
+						// Map exists...
+						UINT16 mapnum = M_UnlockableMapNum(ref);
+						if (mapnum < nummapheaders && mapheaderinfo[mapnum])
+						{
+							// is tutorial...
+							INT32 guessgt = G_GuessGametypeByTOL(mapheaderinfo[mapnum]->typeoflevel);
+							if (guessgt == GT_TUTORIAL)
+							{
+								M_SetMenuDelay(pid);
+
+								multiplayer = true;
+
+								restoreMenu = currentMenu;
+								restorelevellist = levellist;
+
+								// mild hack
+								levellist.newgametype = guessgt;
+								levellist.netgame = false;
+								M_MenuToLevelPreamble(0, false);
+
+								D_MapChange(
+									mapnum+1,
+									guessgt,
+									false,
+									true,
+									1,
+									false,
+									false
+								);
+
+								M_CloseChallenges();
+								M_ClearMenus(true);
+							}
+						}
+					}
+					break;
+				}
 				case SECRET_ALTTITLE:
 				{
 					if (M_MenuConfirmPressed(pid))
@@ -1185,7 +1228,7 @@ boolean M_ChallengesInputs(INT32 ch)
 					{
 						const char *trymusname = NULL;
 
-						UINT16 map = M_UnlockableMapNum(&unlockables[challengesmenu.currentunlock]);
+						UINT16 map = M_UnlockableMapNum(ref);
 						if (map >= nummapheaders
 							|| !mapheaderinfo[map])
 						{