From 19b186e52e004098f6b43bff78e6ea82d01c8127 Mon Sep 17 00:00:00 2001
From: toasterbabe <rollerorbital@gmail.com>
Date: Thu, 9 Jun 2016 15:16:25 +0100
Subject: [PATCH] Changed teetering to match the discoveries made about it in
 the sectorlist_traversal branch in a way that matches my revamps here, since
 I DID change a lot.

---
 src/p_user.c | 104 ++-------------------------------------------------
 1 file changed, 4 insertions(+), 100 deletions(-)

diff --git a/src/p_user.c b/src/p_user.c
index 2e9f0b29..313dad1d 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -2852,8 +2852,8 @@ static void P_DoTeeter(player_t *player)
 	msecnode_t *node;
 	boolean teeter = false;
 	boolean roverfloor; // solid 3d floors?
-	boolean checkedforteeter = false;
 	fixed_t floorheight, ceilingheight;
+	fixed_t highestceilingheight, lowestfloorheight;
 	fixed_t topheight, bottomheight; // for 3d floor usage
 	const fixed_t tiptop = FixedMul(MAXSTEPMOVE, player->mo->scale); // Distance you have to be above the ground in order to teeter.
 
@@ -2862,107 +2862,11 @@ static void P_DoTeeter(player_t *player)
 		teeter = true;
 #undef maxzdelta
 	else // Let's do some checks...
-	{
-		for (node = player->mo->touching_sectorlist; node; node = node->m_snext)
-		{
-			// Ledge teetering. Check if any nearby sectors are low enough from your current one.
-			checkedforteeter = true;
-			roverfloor = false;
-
-			ceilingheight = node->m_sector->ceilingheight;
-			floorheight = node->m_sector->floorheight;
-#ifdef ESLOPE
-			if (node->m_sector->c_slope)
-				ceilingheight = P_GetZAt(node->m_sector->c_slope, player->mo->x, player->mo->y) + FixedMul(node->m_sector->c_slope->zdelta, tiptop);
-			if (node->m_sector->f_slope)
-				floorheight = P_GetZAt(node->m_sector->f_slope, player->mo->x, player->mo->y);
-#endif
-
-			if (node->m_sector->ffloors)
-			{
-				ffloor_t *rover;
-				for (rover = node->m_sector->ffloors; rover; rover = rover->next)
-				{
-					if (!(rover->flags & FF_EXISTS)) continue;
-
-					topheight = *rover->topheight;
-					bottomheight = *rover->bottomheight;
-
-#ifdef ESLOPE
-					if (*rover->t_slope)
-						topheight = P_GetZAt(*rover->t_slope, player->mo->x, player->mo->y);
-					if (*rover->b_slope)
-						bottomheight = P_GetZAt(*rover->b_slope, player->mo->x, player->mo->y);
-#endif
-
-					if (P_CheckSolidLava(player->mo, rover))
-						;
-					else if (!(rover->flags & FF_BLOCKPLAYER || rover->flags & FF_QUICKSAND))
-						continue; // intangible 3d floor
-
-					if (player->mo->eflags & MFE_VERTICALFLIP)
-					{
-						if (bottomheight > ceilingheight) // Above the ceiling
-							continue;
-
-						if (bottomheight > player->mo->z + player->mo->height + tiptop
-							|| (topheight < player->mo->z
-							&& player->mo->z + player->mo->height < ceilingheight - tiptop))
-						{
-							teeter = true;
-							roverfloor = true;
-						}
-						else
-						{
-							teeter = false;
-							roverfloor = true;
-							break;
-						}
-					}
-					else
-					{
-						if (topheight < floorheight) // Below the floor
-							continue;
-
-						if (topheight < player->mo->z - tiptop
-							|| (bottomheight > player->mo->z + player->mo->height
-							&& player->mo->z > floorheight + tiptop))
-						{
-							teeter = true;
-							roverfloor = true;
-						}
-						else
-						{
-							teeter = false;
-							roverfloor = true;
-							break;
-						}
-					}
-				}
-			}
-
-			if (!teeter && !roverfloor)
-			{
-				if (player->mo->eflags & MFE_VERTICALFLIP)
-				{
-					if (ceilingheight > player->mo->z + player->mo->height + tiptop)
-						teeter = true;
-				}
-				else
-				{
-					if (floorheight < player->mo->z - tiptop)
-						teeter = true;
-				}
-			}
-		}
-	}
-
-	if (checkedforteeter && !teeter) // Backup code
 	{
 		sector_t *sec;
 		UINT8 i;
-		fixed_t highestceilingheight = INT32_MIN;
-		fixed_t lowestfloorheight = INT32_MAX;
+		highestceilingheight = INT32_MIN;
+		lowestfloorheight = INT32_MAX;
 
 		teeter = false;
 		roverfloor = false;
@@ -3197,7 +3101,7 @@ teeterdone:
 		if ((player->mo->state == &states[S_PLAY_STND] || player->mo->state == &states[S_PLAY_TAP1] || player->mo->state == &states[S_PLAY_TAP2] || player->mo->state == &states[S_PLAY_SUPERSTAND]))
 			P_SetPlayerMobjState(player->mo, S_PLAY_TEETER1);
 	}
-	else if (checkedforteeter && (player->mo->state == &states[S_PLAY_TEETER1] || player->mo->state == &states[S_PLAY_TEETER2] || player->mo->state == &states[S_PLAY_SUPERTEETER]))
+	else if ((player->mo->state == &states[S_PLAY_TEETER1] || player->mo->state == &states[S_PLAY_TEETER2] || player->mo->state == &states[S_PLAY_SUPERTEETER]))
 		P_SetPlayerMobjState(player->mo, S_PLAY_STND);
 }