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- moved the msecnode code to its own file. 

Note that this originates from Boom so it needs to keep the Doom license.
This commit is contained in:
Christoph Oelckers 2017-01-06 12:54:01 +01:00
parent b11c8fef57
commit ed25cf61c5
5 changed files with 442 additions and 411 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/CMakeLists.txt
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@ -1106,6 +1106,7 @@ set (PCH_SOURCES
p_pusher.cpp
p_saveg.cpp
p_scroll.cpp
p_secnodes.cpp
p_sectors.cpp
p_setup.cpp
p_sight.cpp

7
src/p_blockmap.h
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@ -31,6 +31,13 @@ extern double bmaporgx;
extern double bmaporgy; // origin of block map
extern FBlockNode** blocklinks; // for thing chains
// mapblocks are used to check movement
// against lines and things
enum
{
MAPBLOCKUNITS = 128
};
inline int GetBlockX(double xpos)
{
return int((xpos - bmaporgx) / MAPBLOCKUNITS);

4
src/p_local.h
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@ -48,10 +48,6 @@ struct FTranslatedLineTarget;
#define BONUSADD 6
// mapblocks are used to check movement
// against lines and things
#define MAPBLOCKUNITS 128
// Inspired by Maes
extern int bmapnegx;
extern int bmapnegy;

407
src/p_map.cpp
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@ -6448,413 +6448,6 @@ bool P_ChangeSector(sector_t *sector, int crunch, double amt, int floorOrCeil, b
return cpos.nofit;
}
//=============================================================================
// phares 3/21/98
//
// Maintain a freelist of msecnode_t's to reduce memory allocs and frees.
//=============================================================================
msecnode_t *headsecnode = NULL;
//=============================================================================
//
// P_GetSecnode
//
// Retrieve a node from the freelist. The calling routine
// should make sure it sets all fields properly.
//
//=============================================================================
msecnode_t *P_GetSecnode()
{
msecnode_t *node;
if (headsecnode)
{
node = headsecnode;
headsecnode = headsecnode->m_snext;
}
else
{
node = (msecnode_t *)M_Malloc(sizeof(*node));
}
return node;
}
//=============================================================================
//
// P_PutSecnode
//
// Returns a node to the freelist.
//
//=============================================================================
void P_PutSecnode(msecnode_t *node)
{
node->m_snext = headsecnode;
headsecnode = node;
}
//=============================================================================
// phares 3/16/98
//
// P_AddSecnode
//
// Searches the current list to see if this sector is
// already there. If not, it adds a sector node at the head of the list of
// sectors this object appears in. This is called when creating a list of
// nodes that will get linked in later. Returns a pointer to the new node.
//
//=============================================================================
msecnode_t *P_AddSecnode(sector_t *s, AActor *thing, msecnode_t *nextnode, msecnode_t *&sec_thinglist)
{
msecnode_t *node;
if (s == 0)
{
I_FatalError("AddSecnode of 0 for %s\n", thing->GetClass()->TypeName.GetChars());
}
node = nextnode;
while (node)
{
if (node->m_sector == s) // Already have a node for this sector?
{
node->m_thing = thing; // Yes. Setting m_thing says 'keep it'.
return nextnode;
}
node = node->m_tnext;
}
// Couldn't find an existing node for this sector. Add one at the head
// of the list.
node = P_GetSecnode();
// killough 4/4/98, 4/7/98: mark new nodes unvisited.
node->visited = 0;
node->m_sector = s; // sector
node->m_thing = thing; // mobj
node->m_tprev = NULL; // prev node on Thing thread
node->m_tnext = nextnode; // next node on Thing thread
if (nextnode)
nextnode->m_tprev = node; // set back link on Thing
// Add new node at head of sector thread starting at s->touching_thinglist
node->m_sprev = NULL; // prev node on sector thread
node->m_snext = sec_thinglist; // next node on sector thread
if (sec_thinglist)
node->m_snext->m_sprev = node;
sec_thinglist = node;
return node;
}
//=============================================================================
//
// P_DelSecnode
//
// Deletes a sector node from the list of
// sectors this object appears in. Returns a pointer to the next node
// on the linked list, or NULL.
//
//=============================================================================
msecnode_t *P_DelSecnode(msecnode_t *node, msecnode_t *sector_t::*listhead)
{
msecnode_t* tp; // prev node on thing thread
msecnode_t* tn; // next node on thing thread
msecnode_t* sp; // prev node on sector thread
msecnode_t* sn; // next node on sector thread
if (node)
{
// Unlink from the Thing thread. The Thing thread begins at
// sector_list and not from AActor->touching_sectorlist.
tp = node->m_tprev;
tn = node->m_tnext;
if (tp)
tp->m_tnext = tn;
if (tn)
tn->m_tprev = tp;
// Unlink from the sector thread. This thread begins at
// sector_t->touching_thinglist.
sp = node->m_sprev;
sn = node->m_snext;
if (sp)
sp->m_snext = sn;
else
node->m_sector->*listhead = sn;
if (sn)
sn->m_sprev = sp;
// Return this node to the freelist
P_PutSecnode(node);
return tn;
}
return NULL;
} // phares 3/13/98
//=============================================================================
//
// P_DelSeclist
//
// Delete an entire sector list
//
//=============================================================================
void P_DelSeclist(msecnode_t *node, msecnode_t *sector_t::*sechead)
{
while (node)
node = P_DelSecnode(node, sechead);
}
//=============================================================================
// phares 3/14/98
//
// P_CreateSecNodeList
//
// Alters/creates the sector_list that shows what sectors the object resides in
//
//=============================================================================
msecnode_t *P_CreateSecNodeList(AActor *thing, double radius, msecnode_t *sector_list, msecnode_t *sector_t::*seclisthead)
{
msecnode_t *node;
// First, clear out the existing m_thing fields. As each node is
// added or verified as needed, m_thing will be set properly. When
// finished, delete all nodes where m_thing is still NULL. These
// represent the sectors the Thing has vacated.
node = sector_list;
while (node)
{
node->m_thing = NULL;
node = node->m_tnext;
}
FBoundingBox box(thing->X(), thing->Y(), radius);
FBlockLinesIterator it(box);
line_t *ld;
while ((ld = it.Next()))
{
if (!box.inRange(ld) || box.BoxOnLineSide(ld) != -1)
continue;
// This line crosses through the object.
// Collect the sector(s) from the line and add to the
// sector_list you're examining. If the Thing ends up being
// allowed to move to this position, then the sector_list
// will be attached to the Thing's AActor at touching_sectorlist.
sector_list = P_AddSecnode(ld->frontsector, thing, sector_list, ld->frontsector->*seclisthead);
// Don't assume all lines are 2-sided, since some Things
// like MT_TFOG are allowed regardless of whether their radius takes
// them beyond an impassable linedef.
// killough 3/27/98, 4/4/98:
// Use sidedefs instead of 2s flag to determine two-sidedness.
if (ld->backsector)
sector_list = P_AddSecnode(ld->backsector, thing, sector_list, ld->backsector->*seclisthead);
}
// Add the sector of the (x,y) point to sector_list.
sector_list = P_AddSecnode(thing->Sector, thing, sector_list, thing->Sector->*seclisthead);
// Now delete any nodes that won't be used. These are the ones where
// m_thing is still NULL.
node = sector_list;
while (node)
{
if (node->m_thing == NULL)
{
if (node == sector_list)
sector_list = node->m_tnext;
node = P_DelSecnode(node, seclisthead);
}
else
{
node = node->m_tnext;
}
}
return sector_list;
}
//=============================================================================
//
// P_DelPortalnode
//
// Same for line portal nodes
//
//=============================================================================
portnode_t *P_DelPortalnode(portnode_t *node)
{
portnode_t* tp; // prev node on thing thread
portnode_t* tn; // next node on thing thread
portnode_t* sp; // prev node on sector thread
portnode_t* sn; // next node on sector thread
if (node)
{
// Unlink from the Thing thread. The Thing thread begins at
// sector_list and not from AActor->touching_sectorlist.
tp = node->m_tprev;
tn = node->m_tnext;
if (tp)
tp->m_tnext = tn;
if (tn)
tn->m_tprev = tp;
// Unlink from the sector thread. This thread begins at
// sector_t->touching_thinglist.
sp = node->m_sprev;
sn = node->m_snext;
if (sp)
sp->m_snext = sn;
else
node->m_portal->lineportal_thinglist = sn;
if (sn)
sn->m_sprev = sp;
// Return this node to the freelist (use the same one as for msecnodes, since both types are the same size.)
P_PutSecnode(reinterpret_cast<msecnode_t *>(node));
return tn;
}
return NULL;
}
//=============================================================================
//
// P_AddPortalnode
//
//=============================================================================
portnode_t *P_AddPortalnode(FLinePortal *s, AActor *thing, portnode_t *nextnode)
{
portnode_t *node;
if (s == 0)
{
I_FatalError("AddSecnode of 0 for %s\n", thing->GetClass()->TypeName.GetChars());
}
node = reinterpret_cast<portnode_t*>(P_GetSecnode());
// killough 4/4/98, 4/7/98: mark new nodes unvisited.
node->visited = 0;
node->m_portal = s; // portal
node->m_thing = thing; // mobj
node->m_tprev = NULL; // prev node on Thing thread
node->m_tnext = nextnode; // next node on Thing thread
if (nextnode)
nextnode->m_tprev = node; // set back link on Thing
// Add new node at head of portal thread starting at s->touching_thinglist
node->m_sprev = NULL; // prev node on portal thread
node->m_snext = s->lineportal_thinglist; // next node on portal thread
if (s->lineportal_thinglist)
node->m_snext->m_sprev = node;
s->lineportal_thinglist = node;
return node;
}
//==========================================================================
//
// Handle the lists used to render actors from other portal areas
//
//==========================================================================
void AActor::UpdateRenderSectorList()
{
static const double SPRITE_SPACE = 64.;
if (Pos() != OldRenderPos && !(flags & MF_NOSECTOR))
{
// Only check if the map contains line portals
ClearRenderLineList();
if (PortalBlockmap.containsLines && Pos().XY() != OldRenderPos.XY())
{
int bx = GetBlockX(X());
int by = GetBlockY(Y());
FBoundingBox bb(X(), Y(), MIN(radius*1.5, 128.)); // Don't go further than 128 map units, even for large actors
// Are there any portals near the actor's position?
if (bx >= 0 && by >= 0 && bx < bmapwidth && by < bmapheight && PortalBlockmap(bx, by).neighborContainsLines)
{
// Go through the entire list. In most cases this is faster than setting up a blockmap iterator
for (auto &p : linePortals)
{
if (p.mType == PORTT_VISUAL) continue;
if (bb.inRange(p.mOrigin) && bb.BoxOnLineSide(p.mOrigin))
{
touching_lineportallist = P_AddPortalnode(&p, this, touching_lineportallist);
}
}
}
}
sector_t *sec = Sector;
double lasth = -FLT_MAX;
ClearRenderSectorList();
while (!sec->PortalBlocksMovement(sector_t::ceiling))
{
double planeh = sec->GetPortalPlaneZ(sector_t::ceiling);
if (planeh <= lasth) break; // broken setup.
if (Top() + SPRITE_SPACE < planeh) break;
lasth = planeh;
DVector2 newpos = Pos() + sec->GetPortalDisplacement(sector_t::ceiling);
sec = P_PointInSector(newpos);
touching_sectorportallist = P_AddSecnode(sec, this, touching_sectorportallist, sec->sectorportal_thinglist);
}
sec = Sector;
lasth = FLT_MAX;
while (!sec->PortalBlocksMovement(sector_t::floor))
{
double planeh = sec->GetPortalPlaneZ(sector_t::floor);
if (planeh >= lasth) break; // broken setup.
if (Z() - SPRITE_SPACE > planeh) break;
lasth = planeh;
DVector2 newpos = Pos() + sec->GetPortalDisplacement(sector_t::floor);
sec = P_PointInSector(newpos);
touching_sectorportallist = P_AddSecnode(sec, this, touching_sectorportallist, sec->sectorportal_thinglist);
}
}
}
void AActor::ClearRenderSectorList()
{
msecnode_t *node = touching_sectorportallist;
while (node)
node = P_DelSecnode(node, &sector_t::sectorportal_thinglist);
touching_sectorportallist = NULL;
}
void AActor::ClearRenderLineList()
{
portnode_t *node = touching_lineportallist;
while (node)
node = P_DelPortalnode(node);
touching_lineportallist = NULL;
}
//==========================================================================
//
//

434
src/p_secnodes.cpp Normal file
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@ -0,0 +1,434 @@
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id:$
//
// Copyright (C) 1998-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
// $Log:$
//
// DESCRIPTION:
// Boom secnodes
//
//-----------------------------------------------------------------------------
#include "r_state.h"
#include "p_maputl.h"
#include "p_blockmap.h"
//=============================================================================
// phares 3/21/98
//
// Maintain a freelist of msecnode_t's to reduce memory allocs and frees.
//=============================================================================
msecnode_t *headsecnode = NULL;
//=============================================================================
//
// P_GetSecnode
//
// Retrieve a node from the freelist. The calling routine
// should make sure it sets all fields properly.
//
//=============================================================================
msecnode_t *P_GetSecnode()
{
msecnode_t *node;
if (headsecnode)
{
node = headsecnode;
headsecnode = headsecnode->m_snext;
}
else
{
node = (msecnode_t *)M_Malloc(sizeof(*node));
}
return node;
}
//=============================================================================
//
// P_PutSecnode
//
// Returns a node to the freelist.
//
//=============================================================================
void P_PutSecnode(msecnode_t *node)
{
node->m_snext = headsecnode;
headsecnode = node;
}
//=============================================================================
// phares 3/16/98
//
// P_AddSecnode
//
// Searches the current list to see if this sector is
// already there. If not, it adds a sector node at the head of the list of
// sectors this object appears in. This is called when creating a list of
// nodes that will get linked in later. Returns a pointer to the new node.
//
//=============================================================================
msecnode_t *P_AddSecnode(sector_t *s, AActor *thing, msecnode_t *nextnode, msecnode_t *&sec_thinglist)
{
msecnode_t *node;
if (s == 0)
{
I_FatalError("AddSecnode of 0 for %s\n", thing->GetClass()->TypeName.GetChars());
}
node = nextnode;
while (node)
{
if (node->m_sector == s) // Already have a node for this sector?
{
node->m_thing = thing; // Yes. Setting m_thing says 'keep it'.
return nextnode;
}
node = node->m_tnext;
}
// Couldn't find an existing node for this sector. Add one at the head
// of the list.
node = P_GetSecnode();
// killough 4/4/98, 4/7/98: mark new nodes unvisited.
node->visited = 0;
node->m_sector = s; // sector
node->m_thing = thing; // mobj
node->m_tprev = NULL; // prev node on Thing thread
node->m_tnext = nextnode; // next node on Thing thread
if (nextnode)
nextnode->m_tprev = node; // set back link on Thing
// Add new node at head of sector thread starting at s->touching_thinglist
node->m_sprev = NULL; // prev node on sector thread
node->m_snext = sec_thinglist; // next node on sector thread
if (sec_thinglist)
node->m_snext->m_sprev = node;
sec_thinglist = node;
return node;
}
//=============================================================================
//
// P_DelSecnode
//
// Deletes a sector node from the list of
// sectors this object appears in. Returns a pointer to the next node
// on the linked list, or NULL.
//
//=============================================================================
msecnode_t *P_DelSecnode(msecnode_t *node, msecnode_t *sector_t::*listhead)
{
msecnode_t* tp; // prev node on thing thread
msecnode_t* tn; // next node on thing thread
msecnode_t* sp; // prev node on sector thread
msecnode_t* sn; // next node on sector thread
if (node)
{
// Unlink from the Thing thread. The Thing thread begins at
// sector_list and not from AActor->touching_sectorlist.
tp = node->m_tprev;
tn = node->m_tnext;
if (tp)
tp->m_tnext = tn;
if (tn)
tn->m_tprev = tp;
// Unlink from the sector thread. This thread begins at
// sector_t->touching_thinglist.
sp = node->m_sprev;
sn = node->m_snext;
if (sp)
sp->m_snext = sn;
else
node->m_sector->*listhead = sn;
if (sn)
sn->m_sprev = sp;
// Return this node to the freelist
P_PutSecnode(node);
return tn;
}
return NULL;
} // phares 3/13/98
//=============================================================================
//
// P_DelSeclist
//
// Delete an entire sector list
//
//=============================================================================
void P_DelSeclist(msecnode_t *node, msecnode_t *sector_t::*sechead)
{
while (node)
node = P_DelSecnode(node, sechead);
}
//=============================================================================
// phares 3/14/98
//
// P_CreateSecNodeList
//
// Alters/creates the sector_list that shows what sectors the object resides in
//
//=============================================================================
msecnode_t *P_CreateSecNodeList(AActor *thing, double radius, msecnode_t *sector_list, msecnode_t *sector_t::*seclisthead)
{
msecnode_t *node;
// First, clear out the existing m_thing fields. As each node is
// added or verified as needed, m_thing will be set properly. When
// finished, delete all nodes where m_thing is still NULL. These
// represent the sectors the Thing has vacated.
node = sector_list;
while (node)
{
node->m_thing = NULL;
node = node->m_tnext;
}
FBoundingBox box(thing->X(), thing->Y(), radius);
FBlockLinesIterator it(box);
line_t *ld;
while ((ld = it.Next()))
{
if (!box.inRange(ld) || box.BoxOnLineSide(ld) != -1)
continue;
// This line crosses through the object.
// Collect the sector(s) from the line and add to the
// sector_list you're examining. If the Thing ends up being
// allowed to move to this position, then the sector_list
// will be attached to the Thing's AActor at touching_sectorlist.
sector_list = P_AddSecnode(ld->frontsector, thing, sector_list, ld->frontsector->*seclisthead);
// Don't assume all lines are 2-sided, since some Things
// like MT_TFOG are allowed regardless of whether their radius takes
// them beyond an impassable linedef.
// killough 3/27/98, 4/4/98:
// Use sidedefs instead of 2s flag to determine two-sidedness.
if (ld->backsector)
sector_list = P_AddSecnode(ld->backsector, thing, sector_list, ld->backsector->*seclisthead);
}
// Add the sector of the (x,y) point to sector_list.
sector_list = P_AddSecnode(thing->Sector, thing, sector_list, thing->Sector->*seclisthead);
// Now delete any nodes that won't be used. These are the ones where
// m_thing is still NULL.
node = sector_list;
while (node)
{
if (node->m_thing == NULL)
{
if (node == sector_list)
sector_list = node->m_tnext;
node = P_DelSecnode(node, seclisthead);
}
else
{
node = node->m_tnext;
}
}
return sector_list;
}
//=============================================================================
//
// P_DelPortalnode
//
// Same for line portal nodes
//
//=============================================================================
portnode_t *P_DelPortalnode(portnode_t *node)
{
portnode_t* tp; // prev node on thing thread
portnode_t* tn; // next node on thing thread
portnode_t* sp; // prev node on sector thread
portnode_t* sn; // next node on sector thread
if (node)
{
// Unlink from the Thing thread. The Thing thread begins at
// sector_list and not from AActor->touching_sectorlist.
tp = node->m_tprev;
tn = node->m_tnext;
if (tp)
tp->m_tnext = tn;
if (tn)
tn->m_tprev = tp;
// Unlink from the sector thread. This thread begins at
// sector_t->touching_thinglist.
sp = node->m_sprev;
sn = node->m_snext;
if (sp)
sp->m_snext = sn;
else
node->m_portal->lineportal_thinglist = sn;
if (sn)
sn->m_sprev = sp;
// Return this node to the freelist (use the same one as for msecnodes, since both types are the same size.)
P_PutSecnode(reinterpret_cast<msecnode_t *>(node));
return tn;
}
return NULL;
}
//=============================================================================
//
// P_AddPortalnode
//
//=============================================================================
portnode_t *P_AddPortalnode(FLinePortal *s, AActor *thing, portnode_t *nextnode)
{
portnode_t *node;
if (s == 0)
{
I_FatalError("AddSecnode of 0 for %s\n", thing->GetClass()->TypeName.GetChars());
}
node = reinterpret_cast<portnode_t*>(P_GetSecnode());
// killough 4/4/98, 4/7/98: mark new nodes unvisited.
node->visited = 0;
node->m_portal = s; // portal
node->m_thing = thing; // mobj
node->m_tprev = NULL; // prev node on Thing thread
node->m_tnext = nextnode; // next node on Thing thread
if (nextnode)
nextnode->m_tprev = node; // set back link on Thing
// Add new node at head of portal thread starting at s->touching_thinglist
node->m_sprev = NULL; // prev node on portal thread
node->m_snext = s->lineportal_thinglist; // next node on portal thread
if (s->lineportal_thinglist)
node->m_snext->m_sprev = node;
s->lineportal_thinglist = node;
return node;
}
//==========================================================================
//
// Handle the lists used to render actors from other portal areas
//
//==========================================================================
void AActor::UpdateRenderSectorList()
{
static const double SPRITE_SPACE = 64.;
if (Pos() != OldRenderPos && !(flags & MF_NOSECTOR))
{
// Only check if the map contains line portals
ClearRenderLineList();
if (PortalBlockmap.containsLines && Pos().XY() != OldRenderPos.XY())
{
int bx = GetBlockX(X());
int by = GetBlockY(Y());
FBoundingBox bb(X(), Y(), MIN(radius*1.5, 128.)); // Don't go further than 128 map units, even for large actors
// Are there any portals near the actor's position?
if (bx >= 0 && by >= 0 && bx < bmapwidth && by < bmapheight && PortalBlockmap(bx, by).neighborContainsLines)
{
// Go through the entire list. In most cases this is faster than setting up a blockmap iterator
for (auto &p : linePortals)
{
if (p.mType == PORTT_VISUAL) continue;
if (bb.inRange(p.mOrigin) && bb.BoxOnLineSide(p.mOrigin))
{
touching_lineportallist = P_AddPortalnode(&p, this, touching_lineportallist);
}
}
}
}
sector_t *sec = Sector;
double lasth = -FLT_MAX;
ClearRenderSectorList();
while (!sec->PortalBlocksMovement(sector_t::ceiling))
{
double planeh = sec->GetPortalPlaneZ(sector_t::ceiling);
if (planeh <= lasth) break; // broken setup.
if (Top() + SPRITE_SPACE < planeh) break;
lasth = planeh;
DVector2 newpos = Pos() + sec->GetPortalDisplacement(sector_t::ceiling);
sec = P_PointInSector(newpos);
touching_sectorportallist = P_AddSecnode(sec, this, touching_sectorportallist, sec->sectorportal_thinglist);
}
sec = Sector;
lasth = FLT_MAX;
while (!sec->PortalBlocksMovement(sector_t::floor))
{
double planeh = sec->GetPortalPlaneZ(sector_t::floor);
if (planeh >= lasth) break; // broken setup.
if (Z() - SPRITE_SPACE > planeh) break;
lasth = planeh;
DVector2 newpos = Pos() + sec->GetPortalDisplacement(sector_t::floor);
sec = P_PointInSector(newpos);
touching_sectorportallist = P_AddSecnode(sec, this, touching_sectorportallist, sec->sectorportal_thinglist);
}
}
}
void AActor::ClearRenderSectorList()
{
msecnode_t *node = touching_sectorportallist;
while (node)
node = P_DelSecnode(node, &sector_t::sectorportal_thinglist);
touching_sectorportallist = NULL;
}
void AActor::ClearRenderLineList()
{
portnode_t *node = touching_lineportallist;
while (node)
node = P_DelPortalnode(node);
touching_lineportallist = NULL;
}