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vis.cpp
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/*
VISIBLE INFORMATION SET -aka- V I S
Code based on original code from Valve Software,
Modified by Sean "Zoner" Cavanaugh (seanc@gearboxsoftware.com) with permission.
Modified by Tony "Merl" Moore (merlinis@bigpond.net.au)
Contains code by Skyler "Zipster" York (zipster89134@hotmail.com) - Included with permission.
*/
#include "vis.h"
#ifdef ZHLT_LANGFILE
#ifdef SYSTEM_WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
#endif
#ifdef ZHLT_NETVIS
#include "zlib.h"
#endif
/*
NOTES
*/
int g_numportals = 0;
unsigned g_portalleafs = 0;
portal_t* g_portals;
leaf_t* g_leafs;
#ifdef ZHLT_DETAILBRUSH
int *g_leafstarts;
int *g_leafcounts;
int g_leafcount_all;
#endif
// AJM: MVD
#ifdef HLVIS_MAXDIST
#ifndef HLVIS_MAXDIST_NEW
byte* g_mightsee;
visblocker_t g_visblockers[MAX_VISBLOCKERS];
int g_numvisblockers = 0;
#endif
#endif
//
static byte* vismap;
static byte* vismap_p;
static byte* vismap_end; // past visfile
static int originalvismapsize;
byte* g_uncompressed; // [bitbytes*portalleafs]
unsigned g_bitbytes; // (portalleafs+63)>>3
unsigned g_bitlongs;
bool g_fastvis = DEFAULT_FASTVIS;
bool g_fullvis = DEFAULT_FULLVIS;
bool g_estimate = DEFAULT_ESTIMATE;
bool g_chart = DEFAULT_CHART;
bool g_info = DEFAULT_INFO;
#ifdef HLVIS_MAXDIST
// AJM: MVD
unsigned int g_maxdistance = DEFAULT_MAXDISTANCE_RANGE;
//bool g_postcompile = DEFAULT_POST_COMPILE;
//
#endif
#ifdef HLVIS_OVERVIEW
const int g_overview_max = MAX_MAP_ENTITIES;
overview_t g_overview[g_overview_max];
int g_overview_count = 0;
leafinfo_t* g_leafinfos = NULL;
#endif
#ifdef ZHLT_PROGRESSFILE // AJM
char* g_progressfile = DEFAULT_PROGRESSFILE; // "-progressfile path"
#endif
static int totalvis = 0;
#if ZHLT_ZONES
Zones* g_Zones;
#endif
#ifdef ZHLT_NETVIS
// -- these are definitions and initializations of C/CPP common variables
volatile int g_visportalindex = UNINITIALIZED_PORTAL_INDEX; // a client's portal index : current portalindex being worked on
volatile int g_visportals = 0; // the total portals in the map
volatile int g_visleafs = 0; // the total portal leafs in the map
volatile int g_vislocalportal = 0; // number of portals solved locally
volatile enum vis_states g_visstate = VIS_STARTUP; // current step of execution
volatile enum vis_modes g_vismode = VIS_MODE_NULL; // style of execution (client or server)
volatile int g_visleafthread = 0; // control flag (are we ready to leafthread)
unsigned int g_rate = DEFAULT_NETVIS_RATE;
volatile double g_starttime = 0; // Start time (from I_FloatTime())
volatile unsigned long g_idletime = 0; // Accumulated idle time in milliseconds (rolls over after 46.7 days, hopefully a vis client wont run that long)
volatile unsigned long g_serverindex = 0; // client only variable, server index for calculating percentage indicators on the client
short g_port = DEFAULT_NETVIS_PORT;
const char* g_server_addr = NULL;
volatile bool g_bsp_downloaded = false; // Client variable
volatile bool g_prt_downloaded = false; // Client variable
volatile bool g_mightsee_downloaded = false; // Client variable
char* g_bsp_image = NULL; // Client/Server variable : Server uses it for cache for connecting clients, clients download it to memory to not require filesystem usage
char* g_prt_image = NULL; // Client/Server variable : Server uses it for cache for connecting clients, clients download it to memory to not require filesystem usage
unsigned long g_bsp_compressed_size = 0; // Server variable
unsigned long g_prt_compressed_size = 0; // Server variable
unsigned long g_bsp_size = 0; // Server variable
unsigned long g_prt_size = 0; // Server variable
#endif
#ifdef ZHLT_INFO_COMPILE_PARAMETERS
// AJM: addded in
// =====================================================================================
// GetParamsFromEnt
// this function is called from parseentity when it encounters the
// info_compile_parameters entity. each tool should have its own version of this
// to handle its own specific settings.
// =====================================================================================
void GetParamsFromEnt(entity_t* mapent)
{
int iTmp;
Log("\nCompile Settings detected from info_compile_parameters entity\n");
// verbose(choices) : "Verbose compile messages" : 0 = [ 0 : "Off" 1 : "On" ]
iTmp = IntForKey(mapent, "verbose");
if (iTmp == 1)
{
g_verbose = true;
}
else if (iTmp == 0)
{
g_verbose = false;
}
Log("%30s [ %-9s ]\n", "Compile Option", "setting");
Log("%30s [ %-9s ]\n", "Verbose Compile Messages", g_verbose ? "on" : "off");
// estimate(choices) :"Estimate Compile Times?" : 0 = [ 0: "Yes" 1: "No" ]
if (IntForKey(mapent, "estimate"))
{
g_estimate = true;
}
else
{
g_estimate = false;
}
Log("%30s [ %-9s ]\n", "Estimate Compile Times", g_estimate ? "on" : "off");
// priority(choices) : "Priority Level" : 0 = [ 0 : "Normal" 1 : "High" -1 : "Low" ]
if (!strcmp(ValueForKey(mapent, "priority"), "1"))
{
g_threadpriority = eThreadPriorityHigh;
Log("%30s [ %-9s ]\n", "Thread Priority", "high");
}
else if (!strcmp(ValueForKey(mapent, "priority"), "-1"))
{
g_threadpriority = eThreadPriorityLow;
Log("%30s [ %-9s ]\n", "Thread Priority", "low");
}
/*
hlvis(choices) : "HLVIS" : 2 =
[
0 : "Off"
1 : "Fast"
2 : "Normal"
3 : "Full"
]
*/
iTmp = IntForKey(mapent, "hlvis");
if (iTmp == 0)
{
Fatal(assume_TOOL_CANCEL,
"%s flag was not checked in info_compile_parameters entity, execution of %s cancelled", g_Program, g_Program);
CheckFatal();
}
else if (iTmp == 1)
{
g_fastvis = true;
g_fullvis = false;
}
else if (iTmp == 2)
{
g_fastvis = false;
g_fullvis = false;
}
else if (iTmp == 3)
{
g_fullvis = true;
g_fastvis = false;
}
Log("%30s [ %-9s ]\n", "Fast VIS", g_fastvis ? "on" : "off");
Log("%30s [ %-9s ]\n", "Full VIS", g_fullvis ? "on" : "off" );
///////////////////
Log("\n");
}
#endif
// =====================================================================================
// PlaneFromWinding
// =====================================================================================
static void PlaneFromWinding(winding_t* w, plane_t* plane)
{
vec3_t v1;
vec3_t v2;
// calc plane
VectorSubtract(w->points[2], w->points[1], v1);
VectorSubtract(w->points[0], w->points[1], v2);
CrossProduct(v2, v1, plane->normal);
VectorNormalize(plane->normal);
plane->dist = DotProduct(w->points[0], plane->normal);
}
// =====================================================================================
// NewWinding
// =====================================================================================
static winding_t* NewWinding(const int points)
{
winding_t* w;
int size;
if (points > MAX_POINTS_ON_WINDING)
{
Error("NewWinding: %i points > MAX_POINTS_ON_WINDING", points);
}
#ifdef ZHLT_64BIT_FIX
size = (int)(intptr_t)((winding_t*)0)->points[points];
#else
size = (int)((winding_t*)0)->points[points];
#endif
w = (winding_t*)calloc(1, size);
return w;
}
//=============================================================================
/////////
// NETVIS
#ifdef ZHLT_NETVIS
// =====================================================================================
// GetPortalPtr
// converts a portal index to a pointer
// =====================================================================================
portal_t* GetPortalPtr(const long index)
{
if (index < (g_numportals * 2))
{
return g_portals + index;
}
else
{
return (NULL);
}
}
// =====================================================================================
// GetNextPortalIndex
// This is called by ClientSockets
// =====================================================================================
int GetNextPortalIndex()
{
int j;
int best = NO_PORTAL_INDEX;
portal_t* p;
portal_t* tp;
int min;
ThreadLock();
min = 99999;
p = NULL;
for (j = 0, tp = g_portals; j < g_numportals * 2; j++, tp++)
{
if (tp->nummightsee < min && tp->status == stat_none)
{
min = tp->nummightsee;
p = tp;
best = j;
}
}
if (p)
{
p->status = stat_working;
}
else
{
best = NO_PORTAL_INDEX; // hack to return NO_PORTAL_INDEX to the queue'ing code
}
ThreadUnlock();
return best;
}
// =====================================================================================
// AllPortalsDone
// returns true if all portals are done...
// =====================================================================================
static int AllPortalsDone()
{
const unsigned numportals = g_numportals * 2;
portal_t* tp;
unsigned j;
for (j = 0, tp = g_portals; j < numportals; j++, tp++)
{
if (tp->status != stat_done)
{
return 0;
}
}
return 1;
}
#endif
// NETVIS
///////////
// =====================================================================================
// GetNextPortal
// Returns the next portal for a thread to work on
// Returns the portals from the least complex, so the later ones can reuse the earlier information.
// =====================================================================================
static portal_t* GetNextPortal()
{
int j;
portal_t* p;
portal_t* tp;
int min;
#ifdef ZHLT_NETVIS
if (g_vismode == VIS_MODE_SERVER)
{
#else
{
if (GetThreadWork() == -1)
{
return NULL;
}
#endif
ThreadLock();
min = 99999;
p = NULL;
for (j = 0, tp = g_portals; j < g_numportals * 2; j++, tp++)
{
if (tp->nummightsee < min && tp->status == stat_none)
{
min = tp->nummightsee;
p = tp;
#ifdef ZHLT_NETVIS
g_visportalindex = j;
#endif
}
}
if (p)
{
p->status = stat_working;
}
ThreadUnlock();
return p;
}
#ifdef ZHLT_NETVIS
else // AS CLIENT
{
while (getWorkFromClientQueue() == WAITING_FOR_PORTAL_INDEX)
{
unsigned delay = 100;
g_idletime += delay; // This is the only point where the portal work goes idle, so its easy to add up just how idle it is.
if (!isConnectedToServer())
{
Error("Unexepected disconnect from server(1)\n");
}
NetvisSleep(delay);
}
if (g_visportalindex == NO_PORTAL_INDEX)
{
g_visstate = VIS_CLIENT_DONE;
Send_VIS_GOING_DOWN(g_ClientSession);
return NULL;
}
// convert index to pointer
tp = GetPortalPtr(g_visportalindex);
if (tp)
{
tp->status = stat_working;
}
return (tp);
}
#endif
}
#ifdef HLVIS_MAXDIST
#ifndef ZHLT_DETAILBRUSH
// AJM: MVD
// =====================================================================================
// DecompressAll
// =====================================================================================
void DecompressAll(void)
{
int i;
byte *dest;
for(i = 0; i < g_portalleafs; i++)
{
dest = g_uncompressed + i * g_bitbytes;
DecompressVis((const unsigned char*)(g_dvisdata + (byte)g_dleafs[i + 1].visofs), dest, g_bitbytes);
}
}
// AJM: MVD
// =====================================================================================
// CompressAll
// =====================================================================================
void CompressAll(void)
{
int i, x = 0;
byte *dest;
byte *src;
byte compressed[MAX_MAP_LEAFS / 8];
vismap_p = vismap;
for(i = 0; i < g_portalleafs; i++)
{
memset(&compressed, 0, sizeof(compressed));
src = g_uncompressed + i * g_bitbytes;
// Compress all leafs into global compression buffer
x = CompressVis(src, g_bitbytes, compressed, sizeof(compressed));
dest = vismap_p;
vismap_p += x;
if (vismap_p > vismap_end)
{
Error("Vismap expansion overflow");
}
g_dleafs[i + 1].visofs = dest - vismap; // leaf 0 is a common solid
memcpy(dest, compressed, x);
}
}
#endif
#endif // HLVIS_MAXDIST
// =====================================================================================
// LeafThread
// =====================================================================================
#ifdef SYSTEM_WIN32
#pragma warning(push)
#pragma warning(disable: 4100) // unreferenced formal parameter
#endif
#ifndef ZHLT_NETVIS
static void LeafThread(int unused)
{
portal_t* p;
while (1)
{
if (!(p = GetNextPortal()))
{
return;
}
PortalFlow(p);
Verbose("portal:%4i mightsee:%4i cansee:%4i\n", (int)(p - g_portals), p->nummightsee, p->numcansee);
}
}
#endif //!ZHLT_NETVIS
#ifdef ZHLT_NETVIS
static void LeafThread(int unused)
{
if (g_vismode == VIS_MODE_CLIENT)
{
portal_t* p;
g_visstate = VIS_BASE_PORTAL_VIS_SERVER_WAIT;
Send_VIS_LEAFTHREAD(g_visleafs, g_visportals, g_bitbytes);
while (!g_visleafthread)
{
if (!isConnectedToServer())
{
Error("Unexepected disconnect from server(2)\n");
}
NetvisSleep(100);
}
g_visstate = VIS_PORTAL_FLOW;
Send_VIS_WANT_FULL_SYNC();
while (!g_NetvisAbort)
{
if (!(p = GetNextPortal()))
{
return;
}
PortalFlow(p);
Send_VIS_DONE_PORTAL(g_visportalindex, p);
g_vislocalportal++;
}
}
else if (g_vismode == VIS_MODE_SERVER)
{
#if 0
// Server does zero work in ZHLT netvis
g_visstate = VIS_WAIT_CLIENTS;
while (!g_NetvisAbort)
{
NetvisSleep(1000);
if (AllPortalsDone())
{
g_visstate = VIS_POST;
return;
}
}
#else
portal_t* p;
g_visstate = VIS_WAIT_CLIENTS;
while (!g_NetvisAbort)
{
if (!(p = GetNextPortal()))
{
if (AllPortalsDone())
{
g_visstate = VIS_POST;
return;
}
NetvisSleep(1000); // No need to churn while waiting on slow clients
continue;
}
PortalFlow(p);
g_vislocalportal++;
}
#endif
}
else
{
hlassume(false, assume_VALID_NETVIS_STATE);
}
}
#endif
#ifdef SYSTEM_WIN32
#pragma warning(pop)
#endif
// =====================================================================================
// LeafFlow
// Builds the entire visibility list for a leaf
// =====================================================================================
static void LeafFlow(const int leafnum)
{
leaf_t* leaf;
byte* outbuffer;
byte compressed[MAX_MAP_LEAFS / 8];
unsigned i;
unsigned j;
int k;
int tmp;
int numvis;
byte* dest;
portal_t* p;
//
// flow through all portals, collecting visible bits
//
memset(compressed, 0, sizeof(compressed));
outbuffer = g_uncompressed + leafnum * g_bitbytes;
leaf = &g_leafs[leafnum];
tmp = 0;
const unsigned offset = leafnum >> 3;
const unsigned bit = (1 << (leafnum & 7));
for (i = 0; i < leaf->numportals; i++)
{
p = leaf->portals[i];
if (p->status != stat_done)
{
Error("portal not done (leaf %d)", leafnum);
}
{
byte* dst = outbuffer;
byte* src = p->visbits;
for (j=0; j<g_bitbytes; j++, dst++, src++)
{
*dst |= *src;
}
}
if ((tmp == 0) && (outbuffer[offset] & bit))
{
tmp = 1;
Warning("Leaf portals saw into leaf");
Log(" Problem at portal between leaves %i and %i:\n ", leafnum, p->leaf);
for (k = 0; k < p->winding->numpoints; k++)
{
Log(" (%4.3f %4.3f %4.3f)\n", p->winding->points[k][0], p->winding->points[k][1], p->winding->points[k][2]);
}
Log("\n");
}
}
outbuffer[offset] |= bit;
#ifdef HLVIS_OVERVIEW
if (g_leafinfos[leafnum].isoverviewpoint)
{
for (i = 0; i < g_portalleafs; i++)
{
outbuffer[i >> 3] |= (1 << (i & 7));
}
}
#ifdef HLVIS_SKYBOXMODEL
for (i = 0; i < g_portalleafs; i++)
{
if (g_leafinfos[i].isskyboxpoint)
{
outbuffer[i >> 3] |= (1 << (i & 7));
}
}
#endif
#endif
numvis = 0;
for (i = 0; i < g_portalleafs; i++)
{
if (outbuffer[i >> 3] & (1 << (i & 7)))
{
numvis++;
}
}
//
// compress the bit string
//
Verbose("leaf %4i : %4i visible\n", leafnum, numvis);
totalvis += numvis;
#ifdef ZHLT_DETAILBRUSH
byte buffer2[MAX_MAP_LEAFS / 8];
int diskbytes = (g_leafcount_all + 7) >> 3;
memset (buffer2, 0, diskbytes);
for (i = 0; i < g_portalleafs; i++)
{
for (j = 0; j < g_leafcounts[i]; j++)
{
int srcofs = i >> 3;
int srcbit = 1 << (i & 7);
int dstofs = (g_leafstarts[i] + j) >> 3;
int dstbit = 1 << ((g_leafstarts[i] + j) & 7);
if (outbuffer[srcofs] & srcbit)
{
buffer2[dstofs] |= dstbit;
}
}
}
i = CompressVis (buffer2, diskbytes, compressed, sizeof (compressed));
#else
i = CompressVis(outbuffer, g_bitbytes, compressed, sizeof(compressed));
#endif
dest = vismap_p;
vismap_p += i;
if (vismap_p > vismap_end)
{
Error("Vismap expansion overflow");
}
#ifdef ZHLT_DETAILBRUSH
for (j = 0; j < g_leafcounts[leafnum]; j++)
{
g_dleafs[g_leafstarts[leafnum] + j + 1].visofs = dest - vismap;
}
#else
g_dleafs[leafnum + 1].visofs = dest - vismap; // leaf 0 is a common solid
#endif
memcpy(dest, compressed, i);
}
// =====================================================================================
// CalcPortalVis
// =====================================================================================
static void CalcPortalVis()
{
#ifndef ZHLT_NETVIS
// g_fastvis just uses mightsee for a very loose bound
if (g_fastvis)
{
int i;
for (i = 0; i < g_numportals * 2; i++)
{
g_portals[i].visbits = g_portals[i].mightsee;
g_portals[i].status = stat_done;
}
return;
}
#endif
#ifdef ZHLT_NETVIS
LeafThread(0);
#else
NamedRunThreadsOn(g_numportals * 2, g_estimate, LeafThread);
#endif
}
//////////////
// ZHLT_NETVIS
#ifdef ZHLT_NETVIS
// =====================================================================================
// CalcVis
// =====================================================================================
static void CalcVis()
{
unsigned lastpercent = 0;
int x, size;
if (g_vismode == VIS_MODE_SERVER)
{
g_visstate = VIS_BASE_PORTAL_VIS;
Log("BasePortalVis: \n");
for (x = 0, size = g_numportals * 2; x < size; x++)
{
unsigned percent = (x * 100 / size);
if (percent && (percent != lastpercent) && ((percent % 10) == 0))
{
lastpercent = percent;
#ifdef ZHLT_CONSOLE
PrintConsole
#else
printf
#endif
("%d%%....", percent);
}
BasePortalVis(x);
}
#ifdef ZHLT_CONSOLE
PrintConsole
#else
printf
#endif
("\n");
}
else
{
Send_VIS_WANT_MIGHTSEE_DATA();
while(!g_mightsee_downloaded)
{
if (!isConnectedToServer())
{
Error("Unexepected disconnect from server(3)\n");
}
NetvisSleep(100);
}
}
g_visportals = g_numportals;
g_visleafs = g_portalleafs;
g_starttime = I_FloatTime();
StartStatusDisplayThread(g_rate);
CalcPortalVis();
if (g_vismode == VIS_MODE_SERVER)
{
unsigned int i;
for (i = 0; i < g_portalleafs; i++)
{
LeafFlow(i);
}
Log("average leafs visible: %i\n", totalvis / g_portalleafs);
}
}
#endif
#ifndef ZHLT_NETVIS
#ifdef HLVIS_MAXDIST
#ifndef HLVIS_MAXDIST_NEW
// AJM: MVD
// =====================================================================================
// GetVisBlock
// =====================================================================================
visblocker_t *GetVisBlock(char *name)
{
int i;
visblocker_t *v;
for(i = 0, v = &g_visblockers[0]; i < g_numvisblockers; i++, v++)
{
if(!strcmp(name, v->name))
return v;
}
return NULL;
}
// AJM: MVD
// =====================================================================================
// InitVisBlock
// =====================================================================================
static void InitVisBlock(void)
{
char visfile[_MAX_PATH];
int i;
int x = 0;
int num_blocks;
int num_sides;
#ifdef ZHLT_DEFAULTEXTENSION_FIX
safe_snprintf(visfile, _MAX_PATH, "%s.vis", g_Mapname);
#else
strcpy(visfile, g_Mapname);
DefaultExtension(visfile, ".vis");
#endif
if(!q_exists(visfile))
return;
FILE *fp = fopen(visfile, "r");
if(!fp)
return;
while(!feof(fp))
{
fscanf(fp, "%s\n", g_visblockers[x].name);
fscanf(fp, "%d\n", &num_blocks);
for(i = 0; i < num_blocks; i++)
{
fscanf(fp, "%s\n", g_visblockers[x].blocknames[i]);
}
g_visblockers[x].numnames = num_blocks;
fscanf(fp, "%d\n", &num_sides);
for(i = 0; i < num_sides; i++)
{
fscanf(fp, "%f %f %f %f\n", &g_visblockers[x].planes[i].normal[0],
&g_visblockers[x].planes[i].normal[1],
&g_visblockers[x].planes[i].normal[2],
&g_visblockers[x].planes[i].dist);
}
g_visblockers[x].numplanes = num_sides;
g_visblockers[x].numleafs = 0;
x++;
}
g_numvisblockers = x;
}
// AJM: MVD
// =====================================================================================
// SetupVisBlockLeafs
// Set up the leafs for the visblocker
// =====================================================================================
static void SetupVisBlockLeafs(void)
{
int i, j, k, l, q;
visblocker_t *v;
leaf_t *leaf;
portal_t *p;
plane_t *plane;
float dist;
for(i = 0, v = &g_visblockers[0]; i < g_numvisblockers; i++, v++)
{
for(j = 0, leaf = &g_leafs[0]; j < g_portalleafs; j++, leaf++)
{
for(q = 0, p = leaf->portals[0]; q < leaf->numportals; q++, p++)
{
for(k = 0; k < p->winding->numpoints; k++)
{
for(l = 0, plane = &v->planes[0]; l < v->numplanes; l++, plane++)
{
dist = DotProduct(p->winding->points[k], plane->normal) - plane->dist;
if(dist > ON_EPSILON)
goto PostLoop;
}
}
}
PostLoop:
if(q != leaf->numportals)
continue;
// If we reach this point, then the portal is completely inside the visblocker
v->blockleafs[v->numleafs++] = j;
}
}
}
#endif
// AJM: MVD
// =====================================================================================
// SaveVisData
// =====================================================================================
void SaveVisData(const char *filename)
{
int i;
FILE *fp = fopen(filename, "wb");
if(!fp)
return;
SafeWrite(fp, g_dvisdata, (vismap_p - g_dvisdata));
// BUG BUG BUG!
// Leaf offsets need to be saved too!!!!
for(i = 0; i < g_numleafs; i++)
{
SafeWrite(fp, &g_dleafs[i].visofs, sizeof(int));
}
fclose(fp);
}
#ifndef HLVIS_MAXDIST_NEW
// AJM: MVD
// =====================================================================================
// ResetPortalStatus
// FIX: Used to reset p->status to stat_none; now it justs frees p->visbits
// =====================================================================================
void ResetPortalStatus(void)
{
int i;
portal_t* p = g_portals;
for(i = 0; i < g_numportals * 2; i++, p++)
{
//p->status = stat_none;
free(p->visbits);
}
}
#endif
#endif // HLVIS_MAXDIST
// AJM UNDONE HLVIS_MAXDIST THIS!!!!!!!!!!!!!
// AJM: MVD modified
// =====================================================================================
// CalcVis
// =====================================================================================
static void CalcVis()
{