server/server/quadland.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 *
 * Copyright (©) 2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 *
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

#include <global.h>

#include "noise.h"

/////////////////////////////////////////////////////////////////////////////

static bool
has_floor (maptile *m, sint16 x, sint16 y)
{
  mapxy pos (m, x, y);

  if (!pos.normalise ())
    return true;

  mapspace &ms = pos.ms ();

  for (object *ob = ms.bot; ob; ob = ob->above)
    if (ob->arch->archname == shstr_quad_open_space)
      return false;
    else if (ob->flag [FLAG_IS_FLOOR])
      return true;

  return false;
}

void
move_into_wall (object *ob, object *wall)
{
  bool visible = !wall->invisible && !ob->flag [FLAG_BLIND];

  if (wall->flag [FLAG_IS_QUAD] && visible)
    {
      maptile *m = wall->map;

      if (ob->map->tile_path [TILE_UP] && wall->map->tile_path [TILE_UP])
        {
          maptile *wall_up = wall->map->tile_available (TILE_UP);
          maptile *ob_up   = ob  ->map->tile_available (TILE_UP);

          if (wall_up && ob_up)
            {
              if (ob->blocked (ob_up, ob->x, ob->y) || has_floor (ob_up, ob->x, ob->y))
                ob->failmsg (format ("Ouch, you hit your head while climbing the %s! H<Didn't you see the ceiling? :)>", query_name (wall)));
                //TODO: reduce health
              else if (ob->blocked (wall_up, wall->x, wall->y))
                ob->failmsg (format ("You try to climb up, but the %s is too high for you! H<No free space on top of this block.>", query_name (wall)));
                //TODO: reduce health
              else
                 {
                   ob->statusmsg (format ("You successfully climb up the %s.", query_name (wall)));
                   // here we assume that ob is a player...
                   ob->enter_map (wall_up, wall->x, wall->y);
                 }
            }
          else
            ob->failmsg (format ("You try to climb the %s, but you fall down! H<Try again.>", query_name (wall)));
        }
      else
        ob->failmsg (format ("You fail to climb up the %s! H<You cannot climb up here.>", query_name (wall)));


      return;
    }

  if (ob->contr->ns->bumpmsg)
    {
      ob->play_sound (sound_find ("bump_wall"));

      ob->statusmsg (visible
         ? format ("You bump into the %s.", query_name (wall))
         : "You bump into something."
      );
    }
}

/////////////////////////////////////////////////////////////////////////////

physics_queue::physics_queue ()
{
  i = 0;
}

physics_queue::~physics_queue ()
{
  while (object *ob = pop ())
    ob->refcnt_dec ();
}

object *
physics_queue::pop ()
{
  if (expect_true (i < size ()))
    return (*this)[i++];

  i = 0;
  clear (); //TODO: this frees, but we do not want to free, unless really a lot of objects were queued
  return 0;
}

inline unsigned int
queue_of (tick_t tick)
{
  return tick & (PHYSICS_QUEUES - 1);
}

void update_physics (maptile *m, int x, int y)
{
}

// handle physics updates
void move_physics (object *ob)
{
}

// preliminary slots docs
// level - water level 1..7
// value - pressure
//

static object *
flow_to (maptile *m, sint16 x, sint16 y)
{
  if (!xy_normalise (m, x, y))
    return 0;

  mapspace &ms = m->at (x, y);

  ms.update ();
  if (ms.move_block & MOVE_WALK)
    return 0;

  for (object *w = ms.top; w; w = w->below)
    if (w->type == PHYSICS)
      if (w->subtype == ST_WATER_SOURCE)
        return 0;
      else if (w->subtype == ST_WATER_FLOW)
        return w;

  printf ("creating flow at %d,%d\n", x, y);//D
  object *w = archetype::get (shstr_quad_water_flow);
  w->level = 0;
  w->value = 0;

  m->insert (w, x, y);
  m->queue_physics (w, 1);

  return w;
}

static int
find_ortho_flow (object *src, object **result)
{
  object **res = result;

  for (int dir = 1; dir < 8; dir += 2)
    {
      mapxy pos (src->map, src->x, src->y);
      pos.move (dir);
      if (pos.normalise ())
        if (object *w = flow_to (pos.m, pos.x, pos.y))
            *res++ = w;
    }

  return res - result;
}

static bool
water_set (object *w, int level, int pressure = -1)
{
  if (!level)
    {
      w->destroy ();
      return true;
    }

  bool activity = false;

  min_it (level, 7);

  if (level != w->level)
    {
      w->level = level;
      // update face
      activity = true;
    }

  if (pressure != w->value && pressure >= 0)
    {
      w->value = pressure;
      activity = true;
    }

  if (activity) // this is overkill, but...
    w->map->queue_physics_at (w->x, w->y);

  return activity;
}

static void
run_physics (object *ob)
{
  //TODO: behaviour objects with virtual methods?
  switch (ob->subtype)
    {
      case ST_WATER_SOURCE:
        {
          bool activity = false;

          // water sources generate flowing water "everywhere", but are currently
          // very simple otherwise.
          if (!has_floor (ob->map, ob->x, ob->y) && ob->map->tile_path [TILE_DOWN])
            if (maptile *m = ob->map->tile_available (TILE_DOWN))
              {
                if (object *w = flow_to (m, ob->x, ob->y))
                  activity = activity || water_set (w, 7);
              }
            else
              activity = true;

#if 0
          object *w [4];
          int w_cnt = find_ortho_flow (ob, w);

          while (w_cnt--)
            activity = activity || water_set (w [w_cnt], 7);

          if (activity)
            ob->map->queue_physics (ob, 1);
#endif
        }
        break;

      case ST_WATER_FLOW:
#if 0
        // flow down as much as possible
        if (!has_floor (ob->map, ob->x, ob->y) && ob->map->tile_path [TILE_DOWN])
          if (maptile *m = ob->map->tile_available (TILE_DOWN))
            {
              if (object *w = flow_to (m, ob->x, ob->y))
                {
                  if (int flow = min (ob->level, 7 - w->level))
                    {
                      water_set (w, w->level + flow);
                      water_set (ob, w->level - flow);
                      if (!ob->level)
                        return; // we escaped downwards
                    }
                  else if (ob->level >= 5) // exert pressure -> does not count as activity
                    water_set (w, w->level, ob->value - 1);
                }
            }

        if (ob->level >= 2)
          {
            object *ws [4];
            int w_cnt = find_ortho_flow (ob, ws);

            bool activity = false;

            // distribute 1 to every neighbour that has less - should use some random ordering of course

            while (w_cnt--)
              {
                object *w = ws [w_cnt];

                if (w->level < ob->level - 1)
                  {
                    water_set (w, w->level + 1);
                    --ob->level;
                    activity = true;
                  }
              }

            if (activity)
              ob->map->queue_physics (ob, 1);
          }
        else if (ob->level)
          ;
        else
          ob->destroy ();
#endif

        // TODO: flow up with pressure
        break;

      default:
        LOG (llevError, "object with unsupported physics subtype %d: %s\n", ob->subtype, ob->debug_desc ());
        break;
    }
}

int
maptile::run_physics (tick_t tick, int max_objects)
{
  if (state != MAP_ACTIVE)
    return 0;

  int orig_max_object = max_objects;
  physics_queue &q = pq [queue_of (server_tick)];

  //if (q.size()) printf ("q %d < %d\n", q.i, (int)q.size());//D

  while (object *ob = q.pop ())
    {
      ob->flag [FLAG_PHYSICS_QUEUE] = false;
      ob->refcnt_dec ();

      if (ob->map != this)
        {
          if (!ob->flag [FLAG_FREED])
            {
              LOG (llevError, "%s: physical object on wrong map\n", ob->debug_desc ());
              //ob->map->queue_physics (ob);
            }
        }
      else
        {
          //printf ("handling ob %s\n", ob->debug_desc());//D
          ::run_physics (ob);
        }

      if (--max_objects <= 0)
        break;
    }

  return orig_max_object - max_objects;
}

void
maptile::queue_physics (object *ob, int after)
{
  if (!after) after = 14; //D
  if (!ob->flag [FLAG_PHYSICS_QUEUE])
    {
      ob->flag [FLAG_PHYSICS_QUEUE] = true;
      ob->refcnt_inc ();

      pq [queue_of (server_tick + min (PHYSICS_QUEUES - 2, after))].push_back (ob);
    }
}

static void
queue_physics_at (maptile *m, int x, int y)
{
  mapspace &ms = m->at (x, y);

  for (object *ob = ms.bot; ob; ob = ob->above)
    if (ob->type == PHYSICS)
      m->queue_physics (ob, 1);
}

// this mapspace has changed - potentially activate dormant physics objects
// in the vicinity. vicinity is the 4 spaces around in the same z layer, and above and below.
// TODO: maybe include diagonals in the same z-layer?
// TODO: do not go through floors?
void
maptile::queue_physics_at (int x, int y)
{
  if (maptile *m = tile_available (TILE_DOWN))
    ::queue_physics_at (m, x, y);

  if (maptile *m = tile_available (TILE_UP))
    ::queue_physics_at (m, x, y);

  ::queue_physics_at (this, x, y);

  for (int dir = 1; dir < 8; dir += 2)
    {
      mapxy pos (this, x, y);
      pos.move (dir);
      if (pos.normalise ())
        ::queue_physics_at (pos.m, pos.x, pos.y);
    }
}

void
maptile::activate_physics ()
{
  // most of this is total overkill, but better be safe than sorry, eh?

  coroapi::cede_to_tick ();

  if (maptile *m = tile_map [TILE_UP])
    for (mapspace *ms = spaces + size (); ms-- > spaces; )
      ms->invalidate (); // invalidate faces, in case...

  coroapi::cede_to_tick ();

  for (mapspace *ms = spaces + size (); ms-- > spaces; )
    for (object *op = ms->bot; op; op = op->above)
      if (op->type == PHYSICS)
        queue_physics (op, 0);
}

/////////////////////////////////////////////////////////////////////////////

#define FANCY_GRAPHICS 0

static void
gen_quadspace (maptile *m, int mx, int my, int x, int y, int z)
{
  vec2d P = vec2d (x, y);

  const int deep_sea_z = -200;

  static frac2d gen(13);

  static frac2d vec_gen1 (6, 2, 0.5, 1);
  static frac2d vec_gen2 (6, 2, 0.5, 2);

  const float continent_scale = 0.00008;

  vec2d perturb_pos = pow (P, 1.4) * 1e-5;

  vec2d perturb (
     vec_gen1.fBm (perturb_pos),
     vec_gen2.fBm (perturb_pos)
  );

  float perturb_perturb = 1 - (P[1] - P[0]) * (1. / 25000 / 2);
  perturb_perturb = perturb_perturb * perturb_perturb * 0.4;
  perturb *= perturb_perturb;

  vec2d P_continent = P * continent_scale + perturb;

  static frac2d continent_gen (13, 2.13, 0.5);
  float continent = continent_gen.fBm (P_continent) + 0.05f;

  float x_gradient    = P[0] * (1. / 25000);
  float y_gradient    = P[1] * (1. / 25000);
  float xy_gradient   = (P[0] + P[1]) * (0.5 / 25000);

  const float N = (25000 - 1) * continent_scale;

  // we clip a large border on the perturbed shape, to get irregular coastline
  // and then clip a smaller border around the real shape
  //continent = border_blend (-1.f, continent, P_continent                        , N, 400 * continent_scale);
  continent = border_blend (-1.f, continent, P * continent_scale + perturb * 0.1, N, 100 * continent_scale);

  enum {
    T_NONE,
    T_OCEAN,
    T_RIVER,
    T_VALLEY,
    T_MOUNTAIN,
    T_UNDERGROUND,
    T_AIR, // unused
    T_ACQUIFER,
  } t = T_NONE;

  vec3d c;
  int h0 = 0;      // "water level"
  int h = 1000000; // height form heightmap

  // the continent increases in height from 0 to ~700 levels in the absence of anything else
  // thats about one step every 7 maps.
  int base_height  = blend (0, 300, xy_gradient, 0.2f, 0.9f);
  int river_height = base_height; // * 9 / 10;

  // add this to rivers to "dry them out"
  float dry_out = max (0.f, lerp (xy_gradient, 0.7f, 1.f, 0.f, 0.3f));

  static frac2d river_gen (2);
  float river1 = abs (river_gen.fBm (P * 0.001 + perturb * 4))                              + dry_out;
  float river2 = river_gen.ridgedmultifractal (P * 0.04, 0.8, 10) - y_gradient * 0.2 - 0.16 - dry_out;

  float valley = river1 - 0.2f;

  static frac2d mountain_gen (6, 2.14, 0.5);
  float mountain = mountain_gen.ridgedmultifractal (P * 0.004);

  //TODO: mountains should not lower the height, should they?
  t = valley < 0 ? T_VALLEY : T_MOUNTAIN;
  c = blend0 (vec3d (0, 0.8, 0), vec3d (0.8, 0, 0), valley, 0.1f);
  h = blend0 (base_height + continent * 0, base_height + mountain * xy_gradient * 100, valley, 0.1f);

  if (river1 < 0.01f)
    {
      // main rivers - they cut deeply into the mountains (base_height * 0.9f)
      // well, silly, they don't
      t = T_RIVER;
      c = vec3d (0.2, 0.2, 1);
      h0 = river_height;
      min_it (h, river_height + lerp<float> (river1, 0.f, 0.01f, -10, -1));
    }

  if (river2 > 0)
    {
      t = T_RIVER;
      c = vec3d (0.2, 0.2, 1);
      h0 = river_height;
      min_it (h, river_height + max (-5, lerp<float> (river2, 0.01f, 0, -4, -1)));
    }

  if (continent < 0)
    {
      t = T_OCEAN;
      h0 = 0;
      min_it (h, min (continent * 200, -1));
      c = vec3d (0, 0, 1);
    }

  // now we have the base height, and base terrain

#if FANCY_GRAPHICS
  z = h; // show the surface, not the given z layer
#endif

  max_it (h0, h);

  // everything below the surface is underground, or a variant
  if (z < h)
    t = T_UNDERGROUND;

  // put acquifers a bit below the surface, to reduce them leaking out (will still happen)
  if (z < h - 3)
    {
      static frac3d acquifer_gen (4);
      float acquifer = acquifer_gen.ridgedmultifractal (vec3d (x * 0.001, y * 0.001, z * 0.01), 1.003, 2);

      if (acquifer > 0.48)
        {
          t = T_ACQUIFER;
          c = vec3d (1,1,1);
        }
    }

  //printf ("+%d+%d %d z %d h %d,%d P%g,%g\n", mx, my, t, z, h,h0, P[0],P[1]);//D

  // TODO: caves
  // TODO: chees areas
  // TODO: minerals
  // TODO: monsters

#if FANCY_GRAPHICS
  float v = clamp (lerp<float> (h, deep_sea_z, 800, 0.f, 1.f), 0.f, 1.f);
  c *= v;

  putc (clamp<int> (255 * c[0], 0, 255), stdout);
  putc (clamp<int> (255 * c[1], 0, 255), stdout);
  putc (clamp<int> (255 * c[2], 0, 255), stdout);
#else
  shstr arch_floor = shstr ("quad_open_space");
  shstr arch_wall;

  // TODO: this is shit - we should never generatea water surface, but only
  // water above the surface
  switch (t)
    {
      case T_OCEAN:
        if (z < h0)
          arch_wall  = shstr_quad_water_source;
        else if (z == h0)
          arch_floor  = shstr ("quad_ocean_floor");
        break;

      case T_RIVER:
        if (z < h0)
          arch_wall  = shstr_quad_water_source;
        else if (z == h0)
          arch_floor  = shstr ("quad_water_floor");
        break;

      case T_VALLEY:
        if (z == h)
          arch_floor = shstr ("quad_dirt_floor");
        break;

      case T_MOUNTAIN:
        if (z == h)
          arch_floor = shstr ("quad_stone_floor");
        break;

      case T_UNDERGROUND:
        // todo, use a fractal
        if (z < h - 10)
          {
            arch_floor = shstr ("quad_stone_floor");
            arch_wall  = shstr ("quad_stone_wall");
          }
        else
          {
            arch_floor = shstr ("quad_dirt_floor");
            arch_wall  = shstr ("quad_dirt_wall");
          }
        break;

      case T_ACQUIFER:
        arch_wall  = shstr_quad_water_source;
        break;

      default:
        abort ();
    }

  if (arch_floor)
    m->insert (archetype::get (arch_floor), mx, my);

  if (arch_wall)
    m->insert (archetype::get (arch_wall ), mx, my);
#endif
}

void
gen_quadmap (maptile *m, int x, int y, int z)
{
  assert (m->width  == 50);
  assert (m->height == 50);

  for (int mx = 0; mx < 50; ++mx)
    for (int my = 0; my < 50; ++my)
      gen_quadspace (m, mx, my, x + mx, y + my, z);
}

/////////////////////////////////////////////////////////////////////////////

void noise_test ();
void noise_test ()
{
#if 1
  int Nw = 700;

  printf ("P6 %d %d 255\n", Nw * 3, Nw * 2);
  // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm
  for (int y = 0; y < Nw; ++y)
    {
      if (!(y&63))fprintf (stderr, "y %d\n", y * 50 / Nw);//D

      for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x * 25000 / Nw, y * 25000 / Nw, 0);

      for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x +   400, y, 0);
      for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 22000, y +  2000, 0);
    }
  for (int y = 0; y < Nw; ++y)
    {
      if (!(y&63))fprintf (stderr, "y %d\n", y * 50 / Nw+50);//D

      for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x +  1000, y + 22000, 0);
      for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 12500, y + 12500, 0);
      for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 22000, y + 22000, 0);
    }

          //putc (127 * gen.noise (vec2d (x * 0.01, y * 0.01)) + 128, stdout);
          //putc (256 * gen.terrain2 (x * 0.004, y * 0.004, 8), stdout);
          //putc (256 * gen.fBm (vec2d(x * 0.01, y * 0.01), 16), stdout);
          //putc (256 * gen.turbulence (vec2d (x * 0.004 - 1, y * 0.004 - 1), 10), stdout);
          //putc (256 * gen.heterofractal (vec2d (x * 0.008, y * 0.008), 8, 0.9), stdout);
          //putc (256 * gen.hybridfractal (vec2d (x * 0.01, y * 0.01), 8, -.4, -4), stdout);
          //putc (256 * gen.fBm (vec2d (x * 0.002, y * 0.002), 2), stdout);
          //putc (127.49 * gen.billowfractal (vec2d (x * 0.01, y * 0.01), 9) + 128, stdout);
#elif 1
  int N = 25000;

  printf ("P6 %d %d 255\n", N, N);
  for (int y = 0; y < N; ++y)
    {
      if (!(y&63))fprintf (stderr, "y %d\n", y);//D

      for (int x = 0; x < N; ++x) gen_quadspace (0, 0, 0, x, y, 0);
    }
#else
  int N = 200;

  //printf ("P6 %d %d 255\n", N, N);
  // pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm
  for (int z = 0; z < N; ++z)
    {
      if (!(z&7))fprintf (stderr, "z %d\n", z);//D
  for (int y = 0; y < N; ++y)
    for (int x = 0; x < N; ++x)
      {
#if 0
        float v = gen3.ridgedmultifractal (vec3d (x * 0.001 + 0.2, y * 0.001 + 0.2, z * 0.01 + 0.2), 1.03, 2) * 2;

        if (z < 64)
          v = v * (z * z) / (64 * 64);

        if (v <= 0.9)
          continue;
#endif
        static frac3d gen3 (10);
        //float v = gen3.turbulence (vec3d (x * 0.01, y * 0.01, z * 0.01));
        float v = gen3.ridgedmultifractal (vec3d (x * 0.001, y * 0.001, z * 0.001), 1.003, 2);

        if (v <= 0.48) continue;

        float r[4];
        int i[4];

        r[0] = x;
        r[1] = y;
        r[2] = z;
        r[3] = v;

        memcpy (i, r, 16);

        i[0] = htonl (i[0]);
        i[1] = htonl (i[1]);
        i[2] = htonl (i[2]);
        i[3] = htonl (i[3]);

        fwrite (i, 4*4, 1, stdout);
      }
    }
#endif

  exit (0);
}

Revision:	1.19
Committed:	Mon Oct 29 23:55:55 2012 UTC (11 years, 7 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.18:	+5 -5 lines
Log Message:	trailing space removal
#	Content
1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*
4	* Copyright (©) 2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	*
6	* Deliantra is free software: you can redistribute it and/or modify it under
7	* the terms of the Affero GNU General Public License as published by the
8	* Free Software Foundation, either version 3 of the License, or (at your
9	* option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the Affero GNU General Public License
17	* and the GNU General Public License along with this program. If not, see
18	* <http://www.gnu.org/licenses/>.
19	*
20	* The authors can be reached via e-mail to <support@deliantra.net>
21	*/
22
23	#include <global.h>
24
25	#include "noise.h"
26
27	/////////////////////////////////////////////////////////////////////////////
28
29	static bool
30	has_floor (maptile *m, sint16 x, sint16 y)
31	{
32	mapxy pos (m, x, y);
33
34	if (!pos.normalise ())
35	return true;
36
37	mapspace &ms = pos.ms ();
38
39	for (object *ob = ms.bot; ob; ob = ob->above)
40	if (ob->arch->archname == shstr_quad_open_space)
41	return false;
42	else if (ob->flag [FLAG_IS_FLOOR])
43	return true;
44
45	return false;
46	}
47
48	void
49	move_into_wall (object ob, object wall)
50	{
51	bool visible = !wall->invisible && !ob->flag [FLAG_BLIND];
52
53	if (wall->flag [FLAG_IS_QUAD] && visible)
54	{
55	maptile *m = wall->map;
56
57	if (ob->map->tile_path [TILE_UP] && wall->map->tile_path [TILE_UP])
58	{
59	maptile *wall_up = wall->map->tile_available (TILE_UP);
60	maptile *ob_up = ob ->map->tile_available (TILE_UP);
61
62	if (wall_up && ob_up)
63	{
64	if (ob->blocked (ob_up, ob->x, ob->y) \|\| has_floor (ob_up, ob->x, ob->y))
65	ob->failmsg (format ("Ouch, you hit your head while climbing the %s! H<Didn't you see the ceiling? :)>", query_name (wall)));
66	//TODO: reduce health
67	else if (ob->blocked (wall_up, wall->x, wall->y))
68	ob->failmsg (format ("You try to climb up, but the %s is too high for you! H<No free space on top of this block.>", query_name (wall)));
69	//TODO: reduce health
70	else
71	{
72	ob->statusmsg (format ("You successfully climb up the %s.", query_name (wall)));
73	// here we assume that ob is a player...
74	ob->enter_map (wall_up, wall->x, wall->y);
75	}
76	}
77	else
78	ob->failmsg (format ("You try to climb the %s, but you fall down! H<Try again.>", query_name (wall)));
79	}
80	else
81	ob->failmsg (format ("You fail to climb up the %s! H<You cannot climb up here.>", query_name (wall)));
82
83
84	return;
85	}
86
87	if (ob->contr->ns->bumpmsg)
88	{
89	ob->play_sound (sound_find ("bump_wall"));
90
91	ob->statusmsg (visible
92	? format ("You bump into the %s.", query_name (wall))
93	: "You bump into something."
94	);
95	}
96	}
97
98	/////////////////////////////////////////////////////////////////////////////
99
100	physics_queue::physics_queue ()
101	{
102	i = 0;
103	}
104
105	physics_queue::~physics_queue ()
106	{
107	while (object *ob = pop ())
108	ob->refcnt_dec ();
109	}
110
111	object *
112	physics_queue::pop ()
113	{
114	if (expect_true (i < size ()))
115	return (*this)[i++];
116
117	i = 0;
118	clear (); //TODO: this frees, but we do not want to free, unless really a lot of objects were queued
119	return 0;
120	}
121
122	inline unsigned int
123	queue_of (tick_t tick)
124	{
125	return tick & (PHYSICS_QUEUES - 1);
126	}
127
128	void update_physics (maptile *m, int x, int y)
129	{
130	}
131
132	// handle physics updates
133	void move_physics (object *ob)
134	{
135	}
136
137	// preliminary slots docs
138	// level - water level 1..7
139	// value - pressure
140	//
141
142	static object *
143	flow_to (maptile *m, sint16 x, sint16 y)
144	{
145	if (!xy_normalise (m, x, y))
146	return 0;
147
148	mapspace &ms = m->at (x, y);
149
150	ms.update ();
151	if (ms.move_block & MOVE_WALK)
152	return 0;
153
154	for (object *w = ms.top; w; w = w->below)
155	if (w->type == PHYSICS)
156	if (w->subtype == ST_WATER_SOURCE)
157	return 0;
158	else if (w->subtype == ST_WATER_FLOW)
159	return w;
160
161	printf ("creating flow at %d,%d\n", x, y);//D
162	object *w = archetype::get (shstr_quad_water_flow);
163	w->level = 0;
164	w->value = 0;
165
166	m->insert (w, x, y);
167	m->queue_physics (w, 1);
168
169	return w;
170	}
171
172	static int
173	find_ortho_flow (object src, object *result)
174	{
175	object **res = result;
176
177	for (int dir = 1; dir < 8; dir += 2)
178	{
179	mapxy pos (src->map, src->x, src->y);
180	pos.move (dir);
181	if (pos.normalise ())
182	if (object *w = flow_to (pos.m, pos.x, pos.y))
183	*res++ = w;
184	}
185
186	return res - result;
187	}
188
189	static bool
190	water_set (object *w, int level, int pressure = -1)
191	{
192	if (!level)
193	{
194	w->destroy ();
195	return true;
196	}
197
198	bool activity = false;
199
200	min_it (level, 7);
201
202	if (level != w->level)
203	{
204	w->level = level;
205	// update face
206	activity = true;
207	}
208
209	if (pressure != w->value && pressure >= 0)
210	{
211	w->value = pressure;
212	activity = true;
213	}
214
215	if (activity) // this is overkill, but...
216	w->map->queue_physics_at (w->x, w->y);
217
218	return activity;
219	}
220
221	static void
222	run_physics (object *ob)
223	{
224	//TODO: behaviour objects with virtual methods?
225	switch (ob->subtype)
226	{
227	case ST_WATER_SOURCE:
228	{
229	bool activity = false;
230
231	// water sources generate flowing water "everywhere", but are currently
232	// very simple otherwise.
233	if (!has_floor (ob->map, ob->x, ob->y) && ob->map->tile_path [TILE_DOWN])
234	if (maptile *m = ob->map->tile_available (TILE_DOWN))
235	{
236	if (object *w = flow_to (m, ob->x, ob->y))
237	activity = activity \|\| water_set (w, 7);
238	}
239	else
240	activity = true;
241
242	#if 0
243	object *w [4];
244	int w_cnt = find_ortho_flow (ob, w);
245
246	while (w_cnt--)
247	activity = activity \|\| water_set (w [w_cnt], 7);
248
249	if (activity)
250	ob->map->queue_physics (ob, 1);
251	#endif
252	}
253	break;
254
255	case ST_WATER_FLOW:
256	#if 0
257	// flow down as much as possible
258	if (!has_floor (ob->map, ob->x, ob->y) && ob->map->tile_path [TILE_DOWN])
259	if (maptile *m = ob->map->tile_available (TILE_DOWN))
260	{
261	if (object *w = flow_to (m, ob->x, ob->y))
262	{
263	if (int flow = min (ob->level, 7 - w->level))
264	{
265	water_set (w, w->level + flow);
266	water_set (ob, w->level - flow);
267	if (!ob->level)
268	return; // we escaped downwards
269	}
270	else if (ob->level >= 5) // exert pressure -> does not count as activity
271	water_set (w, w->level, ob->value - 1);
272	}
273	}
274
275	if (ob->level >= 2)
276	{
277	object *ws [4];
278	int w_cnt = find_ortho_flow (ob, ws);
279
280	bool activity = false;
281
282	// distribute 1 to every neighbour that has less - should use some random ordering of course
283
284	while (w_cnt--)
285	{
286	object *w = ws [w_cnt];
287
288	if (w->level < ob->level - 1)
289	{
290	water_set (w, w->level + 1);
291	--ob->level;
292	activity = true;
293	}
294	}
295
296	if (activity)
297	ob->map->queue_physics (ob, 1);
298	}
299	else if (ob->level)
300	;
301	else
302	ob->destroy ();
303	#endif
304
305	// TODO: flow up with pressure
306	break;
307
308	default:
309	LOG (llevError, "object with unsupported physics subtype %d: %s\n", ob->subtype, ob->debug_desc ());
310	break;
311	}
312	}
313
314	int
315	maptile::run_physics (tick_t tick, int max_objects)
316	{
317	if (state != MAP_ACTIVE)
318	return 0;
319
320	int orig_max_object = max_objects;
321	physics_queue &q = pq [queue_of (server_tick)];
322
323	//if (q.size()) printf ("q %d < %d\n", q.i, (int)q.size());//D
324
325	while (object *ob = q.pop ())
326	{
327	ob->flag [FLAG_PHYSICS_QUEUE] = false;
328	ob->refcnt_dec ();
329
330	if (ob->map != this)
331	{
332	if (!ob->flag [FLAG_FREED])
333	{
334	LOG (llevError, "%s: physical object on wrong map\n", ob->debug_desc ());
335	//ob->map->queue_physics (ob);
336	}
337	}
338	else
339	{
340	//printf ("handling ob %s\n", ob->debug_desc());//D
341	::run_physics (ob);
342	}
343
344	if (--max_objects <= 0)
345	break;
346	}
347
348	return orig_max_object - max_objects;
349	}
350
351	void
352	maptile::queue_physics (object *ob, int after)
353	{
354	if (!after) after = 14; //D
355	if (!ob->flag [FLAG_PHYSICS_QUEUE])
356	{
357	ob->flag [FLAG_PHYSICS_QUEUE] = true;
358	ob->refcnt_inc ();
359
360	pq [queue_of (server_tick + min (PHYSICS_QUEUES - 2, after))].push_back (ob);
361	}
362	}
363
364	static void
365	queue_physics_at (maptile *m, int x, int y)
366	{
367	mapspace &ms = m->at (x, y);
368
369	for (object *ob = ms.bot; ob; ob = ob->above)
370	if (ob->type == PHYSICS)
371	m->queue_physics (ob, 1);
372	}
373
374	// this mapspace has changed - potentially activate dormant physics objects
375	// in the vicinity. vicinity is the 4 spaces around in the same z layer, and above and below.
376	// TODO: maybe include diagonals in the same z-layer?
377	// TODO: do not go through floors?
378	void
379	maptile::queue_physics_at (int x, int y)
380	{
381	if (maptile *m = tile_available (TILE_DOWN))
382	::queue_physics_at (m, x, y);
383
384	if (maptile *m = tile_available (TILE_UP))
385	::queue_physics_at (m, x, y);
386
387	::queue_physics_at (this, x, y);
388
389	for (int dir = 1; dir < 8; dir += 2)
390	{
391	mapxy pos (this, x, y);
392	pos.move (dir);
393	if (pos.normalise ())
394	::queue_physics_at (pos.m, pos.x, pos.y);
395	}
396	}
397
398	void
399	maptile::activate_physics ()
400	{
401	// most of this is total overkill, but better be safe than sorry, eh?
402
403	coroapi::cede_to_tick ();
404
405	if (maptile *m = tile_map [TILE_UP])
406	for (mapspace *ms = spaces + size (); ms-- > spaces; )
407	ms->invalidate (); // invalidate faces, in case...
408
409	coroapi::cede_to_tick ();
410
411	for (mapspace *ms = spaces + size (); ms-- > spaces; )
412	for (object *op = ms->bot; op; op = op->above)
413	if (op->type == PHYSICS)
414	queue_physics (op, 0);
415	}
416
417	/////////////////////////////////////////////////////////////////////////////
418
419	#define FANCY_GRAPHICS 0
420
421	static void
422	gen_quadspace (maptile *m, int mx, int my, int x, int y, int z)
423	{
424	vec2d P = vec2d (x, y);
425
426	const int deep_sea_z = -200;
427
428	static frac2d gen(13);
429
430	static frac2d vec_gen1 (6, 2, 0.5, 1);
431	static frac2d vec_gen2 (6, 2, 0.5, 2);
432
433	const float continent_scale = 0.00008;
434
435	vec2d perturb_pos = pow (P, 1.4) * 1e-5;
436
437	vec2d perturb (
438	vec_gen1.fBm (perturb_pos),
439	vec_gen2.fBm (perturb_pos)
440	);
441
442	float perturb_perturb = 1 - (P[1] - P[0]) * (1. / 25000 / 2);
443	perturb_perturb = perturb_perturb * perturb_perturb * 0.4;
444	perturb *= perturb_perturb;
445
446	vec2d P_continent = P * continent_scale + perturb;
447
448	static frac2d continent_gen (13, 2.13, 0.5);
449	float continent = continent_gen.fBm (P_continent) + 0.05f;
450
451	float x_gradient = P[0] * (1. / 25000);
452	float y_gradient = P[1] * (1. / 25000);
453	float xy_gradient = (P[0] + P[1]) * (0.5 / 25000);
454
455	const float N = (25000 - 1) * continent_scale;
456
457	// we clip a large border on the perturbed shape, to get irregular coastline
458	// and then clip a smaller border around the real shape
459	//continent = border_blend (-1.f, continent, P_continent , N, 400 * continent_scale);
460	continent = border_blend (-1.f, continent, P * continent_scale + perturb * 0.1, N, 100 * continent_scale);
461
462	enum {
463	T_NONE,
464	T_OCEAN,
465	T_RIVER,
466	T_VALLEY,
467	T_MOUNTAIN,
468	T_UNDERGROUND,
469	T_AIR, // unused
470	T_ACQUIFER,
471	} t = T_NONE;
472
473	vec3d c;
474	int h0 = 0; // "water level"
475	int h = 1000000; // height form heightmap
476
477	// the continent increases in height from 0 to ~700 levels in the absence of anything else
478	// thats about one step every 7 maps.
479	int base_height = blend (0, 300, xy_gradient, 0.2f, 0.9f);
480	int river_height = base_height; // * 9 / 10;
481
482	// add this to rivers to "dry them out"
483	float dry_out = max (0.f, lerp (xy_gradient, 0.7f, 1.f, 0.f, 0.3f));
484
485	static frac2d river_gen (2);
486	float river1 = abs (river_gen.fBm (P * 0.001 + perturb * 4)) + dry_out;
487	float river2 = river_gen.ridgedmultifractal (P * 0.04, 0.8, 10) - y_gradient * 0.2 - 0.16 - dry_out;
488
489	float valley = river1 - 0.2f;
490
491	static frac2d mountain_gen (6, 2.14, 0.5);
492	float mountain = mountain_gen.ridgedmultifractal (P * 0.004);
493
494	//TODO: mountains should not lower the height, should they?
495	t = valley < 0 ? T_VALLEY : T_MOUNTAIN;
496	c = blend0 (vec3d (0, 0.8, 0), vec3d (0.8, 0, 0), valley, 0.1f);
497	h = blend0 (base_height + continent * 0, base_height + mountain * xy_gradient * 100, valley, 0.1f);
498
499	if (river1 < 0.01f)
500	{
501	// main rivers - they cut deeply into the mountains (base_height * 0.9f)
502	// well, silly, they don't
503	t = T_RIVER;
504	c = vec3d (0.2, 0.2, 1);
505	h0 = river_height;
506	min_it (h, river_height + lerp<float> (river1, 0.f, 0.01f, -10, -1));
507	}
508
509	if (river2 > 0)
510	{
511	t = T_RIVER;
512	c = vec3d (0.2, 0.2, 1);
513	h0 = river_height;
514	min_it (h, river_height + max (-5, lerp<float> (river2, 0.01f, 0, -4, -1)));
515	}
516
517	if (continent < 0)
518	{
519	t = T_OCEAN;
520	h0 = 0;
521	min_it (h, min (continent * 200, -1));
522	c = vec3d (0, 0, 1);
523	}
524
525	// now we have the base height, and base terrain
526
527	#if FANCY_GRAPHICS
528	z = h; // show the surface, not the given z layer
529	#endif
530
531	max_it (h0, h);
532
533	// everything below the surface is underground, or a variant
534	if (z < h)
535	t = T_UNDERGROUND;
536
537	// put acquifers a bit below the surface, to reduce them leaking out (will still happen)
538	if (z < h - 3)
539	{
540	static frac3d acquifer_gen (4);
541	float acquifer = acquifer_gen.ridgedmultifractal (vec3d (x * 0.001, y * 0.001, z * 0.01), 1.003, 2);
542
543	if (acquifer > 0.48)
544	{
545	t = T_ACQUIFER;
546	c = vec3d (1,1,1);
547	}
548	}
549
550	//printf ("+%d+%d %d z %d h %d,%d P%g,%g\n", mx, my, t, z, h,h0, P[0],P[1]);//D
551
552	// TODO: caves
553	// TODO: chees areas
554	// TODO: minerals
555	// TODO: monsters
556
557	#if FANCY_GRAPHICS
558	float v = clamp (lerp<float> (h, deep_sea_z, 800, 0.f, 1.f), 0.f, 1.f);
559	c *= v;
560
561	putc (clamp<int> (255 * c[0], 0, 255), stdout);
562	putc (clamp<int> (255 * c[1], 0, 255), stdout);
563	putc (clamp<int> (255 * c[2], 0, 255), stdout);
564	#else
565	shstr arch_floor = shstr ("quad_open_space");
566	shstr arch_wall;
567
568	// TODO: this is shit - we should never generatea water surface, but only
569	// water above the surface
570	switch (t)
571	{
572	case T_OCEAN:
573	if (z < h0)
574	arch_wall = shstr_quad_water_source;
575	else if (z == h0)
576	arch_floor = shstr ("quad_ocean_floor");
577	break;
578
579	case T_RIVER:
580	if (z < h0)
581	arch_wall = shstr_quad_water_source;
582	else if (z == h0)
583	arch_floor = shstr ("quad_water_floor");
584	break;
585
586	case T_VALLEY:
587	if (z == h)
588	arch_floor = shstr ("quad_dirt_floor");
589	break;
590
591	case T_MOUNTAIN:
592	if (z == h)
593	arch_floor = shstr ("quad_stone_floor");
594	break;
595
596	case T_UNDERGROUND:
597	// todo, use a fractal
598	if (z < h - 10)
599	{
600	arch_floor = shstr ("quad_stone_floor");
601	arch_wall = shstr ("quad_stone_wall");
602	}
603	else
604	{
605	arch_floor = shstr ("quad_dirt_floor");
606	arch_wall = shstr ("quad_dirt_wall");
607	}
608	break;
609
610	case T_ACQUIFER:
611	arch_wall = shstr_quad_water_source;
612	break;
613
614	default:
615	abort ();
616	}
617
618	if (arch_floor)
619	m->insert (archetype::get (arch_floor), mx, my);
620
621	if (arch_wall)
622	m->insert (archetype::get (arch_wall ), mx, my);
623	#endif
624	}
625
626	void
627	gen_quadmap (maptile *m, int x, int y, int z)
628	{
629	assert (m->width == 50);
630	assert (m->height == 50);
631
632	for (int mx = 0; mx < 50; ++mx)
633	for (int my = 0; my < 50; ++my)
634	gen_quadspace (m, mx, my, x + mx, y + my, z);
635	}
636
637	/////////////////////////////////////////////////////////////////////////////
638
639	void noise_test ();
640	void noise_test ()
641	{
642	#if 1
643	int Nw = 700;
644
645	printf ("P6 %d %d 255\n", Nw * 3, Nw * 2);
646	// pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm
647	for (int y = 0; y < Nw; ++y)
648	{
649	if (!(y&63))fprintf (stderr, "y %d\n", y * 50 / Nw);//D
650
651	for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x * 25000 / Nw, y * 25000 / Nw, 0);
652
653	for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 400, y, 0);
654	for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 22000, y + 2000, 0);
655	}
656	for (int y = 0; y < Nw; ++y)
657	{
658	if (!(y&63))fprintf (stderr, "y %d\n", y * 50 / Nw+50);//D
659
660	for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 1000, y + 22000, 0);
661	for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 12500, y + 12500, 0);
662	for (int x = 0; x < Nw; ++x) gen_quadspace (0, 0, 0, x + 22000, y + 22000, 0);
663	}
664
665	//putc (127 * gen.noise (vec2d (x * 0.01, y * 0.01)) + 128, stdout);
666	//putc (256 * gen.terrain2 (x * 0.004, y * 0.004, 8), stdout);
667	//putc (256 * gen.fBm (vec2d(x * 0.01, y * 0.01), 16), stdout);
668	//putc (256 * gen.turbulence (vec2d (x * 0.004 - 1, y * 0.004 - 1), 10), stdout);
669	//putc (256 * gen.heterofractal (vec2d (x * 0.008, y * 0.008), 8, 0.9), stdout);
670	//putc (256 * gen.hybridfractal (vec2d (x * 0.01, y * 0.01), 8, -.4, -4), stdout);
671	//putc (256 * gen.fBm (vec2d (x * 0.002, y * 0.002), 2), stdout);
672	//putc (127.49 * gen.billowfractal (vec2d (x * 0.01, y * 0.01), 9) + 128, stdout);
673	#elif 1
674	int N = 25000;
675
676	printf ("P6 %d %d 255\n", N, N);
677	for (int y = 0; y < N; ++y)
678	{
679	if (!(y&63))fprintf (stderr, "y %d\n", y);//D
680
681	for (int x = 0; x < N; ++x) gen_quadspace (0, 0, 0, x, y, 0);
682	}
683	#else
684	int N = 200;
685
686	//printf ("P6 %d %d 255\n", N, N);
687	// pmake&&server/deliantra-server >x&&convert -depth 8 -size 512xx512 gray:x x.ppm&& cv x.ppm
688	for (int z = 0; z < N; ++z)
689	{
690	if (!(z&7))fprintf (stderr, "z %d\n", z);//D
691	for (int y = 0; y < N; ++y)
692	for (int x = 0; x < N; ++x)
693	{
694	#if 0
695	float v = gen3.ridgedmultifractal (vec3d (x * 0.001 + 0.2, y * 0.001 + 0.2, z * 0.01 + 0.2), 1.03, 2) * 2;
696
697	if (z < 64)
698	v = v * (z * z) / (64 * 64);
699
700	if (v <= 0.9)
701	continue;
702	#endif
703	static frac3d gen3 (10);
704	//float v = gen3.turbulence (vec3d (x * 0.01, y * 0.01, z * 0.01));
705	float v = gen3.ridgedmultifractal (vec3d (x * 0.001, y * 0.001, z * 0.001), 1.003, 2);
706
707	if (v <= 0.48) continue;
708
709	float r[4];
710	int i[4];
711
712	r[0] = x;
713	r[1] = y;
714	r[2] = z;
715	r[3] = v;
716
717	memcpy (i, r, 16);
718
719	i[0] = htonl (i[0]);
720	i[1] = htonl (i[1]);
721	i[2] = htonl (i[2]);
722	i[3] = htonl (i[3]);
723
724	fwrite (i, 4*4, 1, stdout);
725	}
726	}
727	#endif
728
729	exit (0);
730	}
731