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https://github.com/ZDoom/gzdoom.git
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- create the portal group table.
This commit is contained in:
Christoph Oelckers
parent
c338b9cde3
commit
126c80d597
2 changed files with 348 additions and 3 deletions
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@ -1523,10 +1523,10 @@ void P_SpawnSpecials (void)
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break;
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}
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}
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P_CreateLinkedPortals();
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// [RH] Start running any open scripts on this map
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FBehavior::StaticStartTypedScripts (SCRIPT_Open, NULL, false);
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P_FinalizePortals();
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P_CreateLinkedPortals();
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}
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// killough 2/28/98:
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349
src/portal.cpp
349
src/portal.cpp
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@ -8,10 +8,15 @@
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#include "p_tags.h"
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#include "farchive.h"
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#include "v_text.h"
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#include "a_sharedglobal.h"
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#include "i_system.h"
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#include "c_dispatch.h"
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// simulation recurions maximum
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CVAR(Int, sv_portal_recursions, 4, CVAR_ARCHIVE|CVAR_SERVERINFO)
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FDisplacementTable Displacements;
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TArray<FLinePortal> linePortals;
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@ -148,7 +153,19 @@ void P_UpdatePortal(FLinePortal *port)
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else
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{
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port->mFlags = port->mDefFlags;
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}
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if (port->mType == PORTT_LINKED)
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{
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if (linePortals[port->mDestination->portalindex].mType != PORTT_LINKED)
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{
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port->mType = PORTT_INTERACTIVE; // linked portals must be two-way.
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}
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else
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{
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port->mXDisplacement = port->mDestination->v2->x - port->mOrigin->v1->x;
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port->mYDisplacement = port->mDestination->v2->y - port->mOrigin->v1->y;
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}
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}
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}
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}
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void P_FinalizePortals()
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@ -504,8 +521,336 @@ bool PortalTracer::TraceStep()
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return (oDepth != depth); // if a portal has been found, return false
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}
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void P_CreateLinkedPortals()
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//============================================================================
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//
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// CollectSectors
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//
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// Collects all sectors that are connected to any sector belonging to a portal
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// because they all will need the same displacement values
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//
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//============================================================================
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static bool CollectSectors(int groupid, sector_t *origin)
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{
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if (origin->PortalGroup != 0) return false; // already processed
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origin->PortalGroup = groupid;
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TArray<sector_t *> list(16);
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list.Push(origin);
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for (unsigned i = 0; i < list.Size(); i++)
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{
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sector_t *sec = list[i];
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for (int j = 0; j < sec->linecount; j++)
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{
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line_t *line = sec->lines[j];
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sector_t *other = line->frontsector == sec ? line->backsector : line->frontsector;
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if (other != NULL && other != sec && other->PortalGroup != groupid)
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{
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other->PortalGroup = groupid;
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list.Push(other);
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}
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}
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}
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return true;
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}
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//============================================================================
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//
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// AddDisplacementForPortal
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//
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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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//============================================================================
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static void AddDisplacementForPortal(AStackPoint *portal)
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{
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int thisgroup = portal->Mate->Sector->PortalGroup;
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int othergroup = portal->Sector->PortalGroup;
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if (thisgroup == othergroup)
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{
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Printf("Portal between sectors %d and %d has both sides in same group and will be disabled\n", portal->Sector->sectornum, portal->Mate->Sector->sectornum);
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portal->special1 = portal->Mate->special1 = SKYBOX_PORTAL;
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return;
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}
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if (thisgroup <= 0 || thisgroup >= Displacements.size || othergroup <= 0 || othergroup >= Displacements.size)
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{
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Printf("Portal between sectors %d and %d has invalid group and will be disabled\n", portal->Sector->sectornum, portal->Mate->Sector->sectornum);
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portal->special1 = portal->Mate->special1 = SKYBOX_PORTAL;
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return;
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}
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FDisplacement & disp = Displacements(thisgroup, othergroup);
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if (!disp.isSet)
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{
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disp.x = portal->scaleX;
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disp.y = portal->scaleY;
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disp.isSet = true;
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}
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else
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{
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if (disp.x != portal->scaleX || disp.y != portal->scaleY)
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{
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Printf("Portal between sectors %d and %d has displacement mismatch and will be disabled\n", portal->Sector->sectornum, portal->Mate->Sector->sectornum);
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portal->special1 = portal->Mate->special1 = SKYBOX_PORTAL;
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return;
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}
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}
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}
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static void AddDisplacementForPortal(FLinePortal *portal)
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{
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int thisgroup = portal->mOrigin->frontsector->PortalGroup;
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int othergroup = portal->mDestination->frontsector->PortalGroup;
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if (thisgroup == othergroup)
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{
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Printf("Portal between lines %d and %d has both sides in same group\n", int(portal->mOrigin-lines), int(portal->mDestination-lines));
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portal->mType = linePortals[portal->mDestination->portalindex].mType = PORTT_TELEPORT;
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return;
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}
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if (thisgroup <= 0 || thisgroup >= Displacements.size || othergroup <= 0 || othergroup >= Displacements.size)
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{
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Printf("Portal between lines %d and %d has invalid group\n", int(portal->mOrigin - lines), int(portal->mDestination - lines));
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portal->mType = linePortals[portal->mDestination->portalindex].mType = PORTT_TELEPORT;
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return;
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}
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FDisplacement & disp = Displacements(thisgroup, othergroup);
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if (!disp.isSet)
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{
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disp.x = portal->mXDisplacement;
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disp.y = portal->mYDisplacement;
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disp.isSet = true;
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}
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else
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{
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if (disp.x != portal->mXDisplacement || disp.y != portal->mYDisplacement)
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{
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Printf("Portal between lines %d and %d has displacement mismatch\n", int(portal->mOrigin - lines), int(portal->mDestination - lines));
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portal->mType = linePortals[portal->mDestination->portalindex].mType = PORTT_TELEPORT;
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return;
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}
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}
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}
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//============================================================================
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//
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// ConnectGroups
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//
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// Do the indirect connections. This loop will run until it cannot find any new connections
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//
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//============================================================================
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static bool ConnectGroups()
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{
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// Now
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BYTE indirect = 1;
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bool bogus = false;
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bool changed;
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do
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{
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changed = false;
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for (int x = 1; x < Displacements.size; x++)
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{
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for (int y = 1; y < Displacements.size; y++)
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{
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FDisplacement &dispxy = Displacements(x, y);
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if (dispxy.isSet)
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{
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for (int z = 1; z < Displacements.size; z++)
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{
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FDisplacement &dispyz = Displacements(y, z);
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if (dispyz.isSet)
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{
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FDisplacement &dispxz = Displacements(x, z);
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if (dispxz.isSet)
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{
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if (dispxy.x + dispyz.x != dispxz.x || dispxy.y + dispyz.y != dispxz.y)
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{
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bogus = true;
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}
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}
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else
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{
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dispxz.x = dispxy.x + dispyz.x;
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dispxz.y = dispxy.y + dispyz.y;
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dispxz.isSet = true;
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dispxz.indirect = indirect;
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changed = true;
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}
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}
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}
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}
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}
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}
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indirect++;
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} while (changed);
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return bogus;
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}
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//============================================================================
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//
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// P_CreateLinkedPortals
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//
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// Creates the data structures needed for linked portals
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// Removes portals from sloped sectors (as they cannot work on them)
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// Group all sectors connected to one side of the portal
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// Caclculate displacements between all created groups.
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//
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// Portals with the same offset but different anchors will not be merged.
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//
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//============================================================================
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void P_CreateLinkedPortals()
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{
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TThinkerIterator<AStackPoint> it;
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AStackPoint *mo;
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TArray<AStackPoint *> orgs;
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int id = 0;
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bool bogus = false;
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while ((mo = it.Next()))
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{
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if (mo->special1 == SKYBOX_LINKEDPORTAL)
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{
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if (mo->Mate != NULL)
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{
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orgs.Push(mo);
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mo->reactiontime = ++id;
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}
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else
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{
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// this should never happen, but if it does, the portal needs to be removed
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mo->Destroy();
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}
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}
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}
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if (orgs.Size() == 0)
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{
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return;
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}
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for (int i = 0; i < numsectors; i++)
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{
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for (int j = 0; j < 2; j++)
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{
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ASkyViewpoint *box = sectors[i].SkyBoxes[j];
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if (box != NULL && box->special1 == SKYBOX_LINKEDPORTAL)
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{
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secplane_t &plane = j == 0 ? sectors[i].floorplane : sectors[i].ceilingplane;
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if (plane.a || plane.b)
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{
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// The engine cannot deal with portals on a sloped plane.
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sectors[i].SkyBoxes[j] = NULL;
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Printf("Portal on %s of sector %d is sloped and will be disabled\n", j==0? "floor":"ceiling", i);
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}
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}
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}
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}
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// Group all sectors, starting at each portal origin.
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id = 1;
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for (unsigned i = 0; i < orgs.Size(); i++)
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{
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if (CollectSectors(id, orgs[i]->Sector)) id++;
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if (CollectSectors(id, orgs[i]->Mate->Sector)) id++;
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}
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for (unsigned i = 0; i < linePortals.Size(); i++)
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{
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if (linePortals[i].mType == PORTT_LINKED)
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{
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if (CollectSectors(id, linePortals[i].mOrigin->frontsector)) id++;
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if (CollectSectors(id, linePortals[i].mDestination->frontsector)) id++;
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}
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}
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Displacements.Create(id);
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// Check for leftover sectors that connect to a portal
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for (int i = 0; i<numsectors; i++)
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{
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for (int j = 0; j < 2; j++)
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{
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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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{
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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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}
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}
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}
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}
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for (unsigned i = 0; i < orgs.Size(); i++)
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{
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AddDisplacementForPortal(orgs[i]);
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}
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for (unsigned i = 0; i < linePortals.Size(); i++)
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{
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if (linePortals[i].mType == PORTT_LINKED)
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{
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AddDisplacementForPortal(&linePortals[i]);
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}
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}
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for (int x = 1; x < Displacements.size; x++)
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{
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for (int y = x + 1; y < Displacements.size; y++)
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{
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FDisplacement &dispxy = Displacements(x, y);
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FDisplacement &dispyx = Displacements(y, x);
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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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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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}
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}
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bogus |= ConnectGroups();
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if (bogus)
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{
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// todo: disable all portals whose offsets do not match the associated groups
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}
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// reject would just get in the way when checking sight through portals.
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if (rejectmatrix != NULL)
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{
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delete[] rejectmatrix;
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rejectmatrix = NULL;
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}
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// finally we must flag all planes which are obstructed by the sector's own ceiling or floor.
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for (int i = 0; i < numsectors; i++)
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{
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sectors[i].CheckPortalPlane(sector_t::floor);
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sectors[i].CheckPortalPlane(sector_t::ceiling);
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}
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//BuildBlockmap();
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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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{
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for (int y = 1; y < Displacements.size; y++)
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{
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FDisplacement &disp = Displacements(x, y);
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Printf("%c%c(%6d, %6d)", TEXTCOLOR_ESCAPE, 'C' + disp.indirect, disp.x >> FRACBITS, disp.y >> FRACBITS);
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}
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Printf("\n");
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}
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}
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