mirror of https://github.com/ZDoom/qzdoom.git
- fixed: The check for leftover portal sectors was not correct. It only checked the sectors the portal thing was in and those were already processed in the first phase.
- improved: If there's an offset mismatch, do not print group numbers as they are utterly meaningless. Instead look for a sector in each group and report those. - added a copyright notice and some comments to portals.cpp.
This commit is contained in:
Christoph Oelckers
parent
afc631b537
commit
5664cee2e5
166
src/portal.cpp
166
src/portal.cpp
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@ -1,3 +1,42 @@
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/*
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** portals.cpp
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** Everything that has to do with portals (both of the line and sector variety)
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**
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**---------------------------------------------------------------------------
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** Copyright 2016 ZZYZX
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** Copyright 2016 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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** There is no code here that is directly taken from Eternity
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** although some similarities may be inevitable because it has to
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** implement the same concepts.
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*/
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#include "portal.h"
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#include "p_local.h"
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#include "p_lnspec.h"
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@ -23,6 +62,12 @@ TArray<FLinePortal> linePortals;
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TArray<FLinePortal*> linkedPortals; // only the linked portals, this is used to speed up looking for them in P_CollectConnectedGroups.
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//============================================================================
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//
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// Save a line portal for savegames.
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//
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//============================================================================
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FArchive &operator<< (FArchive &arc, FLinePortal &port)
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{
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arc << port.mOrigin
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@ -37,6 +82,12 @@ FArchive &operator<< (FArchive &arc, FLinePortal &port)
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}
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//============================================================================
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//
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// finds the destination for a line portal for spawning
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//
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//============================================================================
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static line_t *FindDestination(line_t *src, int tag)
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{
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if (tag)
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@ -55,6 +106,12 @@ static line_t *FindDestination(line_t *src, int tag)
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return NULL;
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}
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//============================================================================
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//
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// Spawns a single line portal
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//
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//============================================================================
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void P_SpawnLinePortal(line_t* line)
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{
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// portal destination is special argument #0
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@ -135,6 +192,12 @@ void P_SpawnLinePortal(line_t* line)
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}
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}
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//============================================================================
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//
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// Update a line portal's state after all have been spawned
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//
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//============================================================================
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void P_UpdatePortal(FLinePortal *port)
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{
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if (port->mDestination == NULL)
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@ -171,6 +234,13 @@ void P_UpdatePortal(FLinePortal *port)
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}
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}
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//============================================================================
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//
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// Collect a separate list of linked portals so that these can be
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// processed faster without the simpler types interfering.
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//
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//============================================================================
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void P_CollectLinkedPortals()
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{
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linkedPortals.Clear();
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@ -184,6 +254,12 @@ void P_CollectLinkedPortals()
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}
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}
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//============================================================================
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//
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// Post-process all line portals
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//
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//============================================================================
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void P_FinalizePortals()
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{
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for (unsigned i = 0; i < linePortals.Size(); i++)
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@ -194,6 +270,12 @@ void P_FinalizePortals()
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P_CollectLinkedPortals();
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}
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//============================================================================
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//
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// Change the destination of a portal
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//
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//============================================================================
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static bool ChangePortalLine(line_t *line, int destid)
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{
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if (line->portalindex >= linePortals.Size()) return false;
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@ -224,6 +306,12 @@ static bool ChangePortalLine(line_t *line, int destid)
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}
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//============================================================================
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//
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// Change the destination of a group of portals
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//
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//============================================================================
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bool P_ChangePortal(line_t *ln, int thisid, int destid)
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{
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int lineno;
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@ -238,7 +326,13 @@ bool P_ChangePortal(line_t *ln, int thisid, int destid)
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return res;
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}
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//============================================================================
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//
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// Calculate the intersection between two lines.
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// [ZZ] lots of floats here to avoid overflowing a lot
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//
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//============================================================================
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bool P_IntersectLines(fixed_t o1x, fixed_t o1y, fixed_t p1x, fixed_t p1y,
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fixed_t o2x, fixed_t o2y, fixed_t p2x, fixed_t p2y,
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fixed_t& rx, fixed_t& ry)
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@ -278,9 +372,15 @@ inline int P_PointOnLineSideExplicit (fixed_t x, fixed_t y, fixed_t x1, fixed_t
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return DMulScale32 (y-y1, x2-x1, x1-x, y2-y1) > 0;
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}
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//============================================================================
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//
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// check if this line is between portal and the viewer. clip away if it is.
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// (this may need some fixing)
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//
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//============================================================================
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bool P_ClipLineToPortal(line_t* line, line_t* portal, fixed_t viewx, fixed_t viewy, bool partial, bool samebehind)
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{
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// check if this line is between portal and the viewer. clip away if it is.
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bool behind1 = !!P_PointOnLineSidePrecise(line->v1->x, line->v1->y, portal);
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bool behind2 = !!P_PointOnLineSidePrecise(line->v2->x, line->v2->y, portal);
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@ -306,6 +406,12 @@ bool P_ClipLineToPortal(line_t* line, line_t* portal, fixed_t viewx, fixed_t vie
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return false;
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}
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//============================================================================
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//
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// Translates a coordinate by a portal's displacement
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//
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//============================================================================
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void P_TranslatePortalXY(line_t* src, line_t* dst, fixed_t& x, fixed_t& y)
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{
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if (!src || !dst)
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@ -342,6 +448,12 @@ void P_TranslatePortalXY(line_t* src, line_t* dst, fixed_t& x, fixed_t& y)
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y = ty;
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}
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//============================================================================
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//
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// Translates a velocity vector by a portal's displacement
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//
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//============================================================================
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void P_TranslatePortalVXVY(line_t* src, line_t* dst, fixed_t& vx, fixed_t& vy)
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{
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angle_t angle =
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@ -360,6 +472,12 @@ void P_TranslatePortalVXVY(line_t* src, line_t* dst, fixed_t& vx, fixed_t& vy)
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vy = FixedMul(orig_vely, c) + FixedMul(orig_velx, s);
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}
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//============================================================================
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//
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// Translates an angle by a portal's displacement
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//
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//============================================================================
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void P_TranslatePortalAngle(line_t* src, line_t* dst, angle_t& angle)
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{
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if (!src || !dst)
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@ -376,6 +494,12 @@ void P_TranslatePortalAngle(line_t* src, line_t* dst, angle_t& angle)
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angle += xangle;
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}
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//============================================================================
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//
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// Translates a z-coordinate by a portal's displacement
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//
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//============================================================================
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void P_TranslatePortalZ(line_t* src, line_t* dst, fixed_t& z)
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{
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// args[2] = 0 - no adjustment
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@ -397,7 +521,12 @@ void P_TranslatePortalZ(line_t* src, line_t* dst, fixed_t& z)
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}
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}
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//============================================================================
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//
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// calculate shortest distance from a point (x,y) to a linedef
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//
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//============================================================================
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fixed_t P_PointLineDistance(line_t* line, fixed_t x, fixed_t y)
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{
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angle_t angle = R_PointToAngle2(0, 0, line->dx, line->dy);
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@ -423,7 +552,12 @@ void P_NormalizeVXVY(fixed_t& vx, fixed_t& vy)
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vy = FLOAT2FIXED(_vy/len);
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}
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//============================================================================
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//
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// portal tracer code
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//
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//============================================================================
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PortalTracer::PortalTracer(fixed_t startx, fixed_t starty, fixed_t endx, fixed_t endy)
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{
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this->startx = startx;
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@ -583,6 +717,9 @@ static bool CollectSectors(int groupid, sector_t *origin)
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// Adds the displacement for one portal to the displacement array
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// (one version for sector to sector plane, one for line to line portals)
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//
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// Note: Despite the similarities to Eternity's equivalent this is
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// original code!
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//
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//============================================================================
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static void AddDisplacementForPortal(AStackPoint *portal)
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@ -796,14 +933,13 @@ void P_CreateLinkedPortals()
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ASkyViewpoint *box = sectors[i].SkyBoxes[j];
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if (box != NULL)
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{
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if (box->special1 == SKYBOX_LINKEDPORTAL && box->Sector->PortalGroup == 0)
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if (box->special1 == SKYBOX_LINKEDPORTAL && sectors[i].PortalGroup == 0)
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{
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CollectSectors(box->Sector->PortalGroup, box->Sector);
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box = box->Mate;
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if (box->special1 == SKYBOX_LINKEDPORTAL && box->Sector->PortalGroup == 0)
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{
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CollectSectors(box->Sector->PortalGroup, box->Sector);
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}
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// Note: the linked actor will be on the other side of the portal.
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// To get this side's group we will have to look at the mate object.
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CollectSectors(box->Mate->Sector->PortalGroup, §ors[i]);
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// We cannot process the backlink here because all we can access is the anchor object
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// If necessary that will have to be done for the other side's portal.
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}
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}
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}
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@ -829,7 +965,13 @@ void P_CreateLinkedPortals()
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if (dispxy.isSet && dispyx.isSet &&
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(dispxy.x != -dispyx.x || dispxy.y != -dispyx.y))
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{
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Printf("Link offset mismatch between groups %d and %d\n", x, y); // need to find some sectors to report.
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int sec1 = -1, sec2 = -1;
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for (int i = 0; i < numsectors && (sec1 == -1 || sec2 == -1); i++)
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{
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if (sec1 == -1 && sectors[i].PortalGroup == x) sec1 = i;
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if (sec2 == -1 && sectors[i].PortalGroup == y) sec2 = i;
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}
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Printf("Link offset mismatch between sectors %d and %d\n", sec1, sec2);
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bogus = true;
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}
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// todo: Find sectors that have no group but belong to a portal.
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@ -938,6 +1080,12 @@ bool P_CollectConnectedGroups(AActor *actor, fixed_t newx, fixed_t newy, FPortal
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}
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//============================================================================
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//
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// print the group link table to the console
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//
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//============================================================================
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CCMD(dumplinktable)
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{
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for (int x = 1; x < Displacements.size; x++)
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