src/player.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "player.h"
  21
  22 #include <fstream>
  23 #include "util/numeric.h"
  24 #include "hud.h"
  25 #include "constants.h"
  26 #include "gamedef.h"
  27 #include "settings.h"
  28 #include "content_sao.h"
  29 #include "filesys.h"
  30 #include "log.h"
  31 #include "porting.h"  // strlcpy
  32
  33
  34 Player::Player(IGameDef *gamedef, const char *name):
  35         touching_ground(false),
  36         in_liquid(false),
  37         in_liquid_stable(false),
  38         liquid_viscosity(0),
  39         is_climbing(false),
  40         swimming_vertical(false),
  41         camera_barely_in_ceiling(false),
  42         light(0),
  43         inventory(gamedef->idef()),
  44         hp(PLAYER_MAX_HP),
  45         hurt_tilt_timer(0),
  46         hurt_tilt_strength(0),
  47         peer_id(PEER_ID_INEXISTENT),
  48         keyPressed(0),
  49 // protected
  50         m_gamedef(gamedef),
  51         m_breath(-1),
  52         m_pitch(0),
  53         m_yaw(0),
  54         m_speed(0,0,0),
  55         m_position(0,0,0),
  56         m_collisionbox(-BS*0.30,0.0,-BS*0.30,BS*0.30,BS*1.75,BS*0.30),
  57         m_dirty(false)
  58 {
  59         strlcpy(m_name, name, PLAYERNAME_SIZE);
  60
  61         inventory.clear();
  62         inventory.addList("main", PLAYER_INVENTORY_SIZE);
  63         InventoryList *craft = inventory.addList("craft", 9);
  64         craft->setWidth(3);
  65         inventory.addList("craftpreview", 1);
  66         inventory.addList("craftresult", 1);
  67
  68         // Can be redefined via Lua
  69         inventory_formspec = "size[8,7.5]"
  70                 //"image[1,0.6;1,2;player.png]"
  71                 "list[current_player;main;0,3.5;8,4;]"
  72                 "list[current_player;craft;3,0;3,3;]"
  73                 "list[current_player;craftpreview;7,1;1,1;]";
  74
  75         // Initialize movement settings at default values, so movement can work if the server fails to send them
  76         movement_acceleration_default   = 3    * BS;
  77         movement_acceleration_air       = 2    * BS;
  78         movement_acceleration_fast      = 10   * BS;
  79         movement_speed_walk             = 4    * BS;
  80         movement_speed_crouch           = 1.35 * BS;
  81         movement_speed_fast             = 20   * BS;
  82         movement_speed_climb            = 2    * BS;
  83         movement_speed_jump             = 6.5  * BS;
  84         movement_liquid_fluidity        = 1    * BS;
  85         movement_liquid_fluidity_smooth = 0.5  * BS;
  86         movement_liquid_sink            = 10   * BS;
  87         movement_gravity                = 9.81 * BS;
  88
  89         // Movement overrides are multipliers and must be 1 by default
  90         physics_override_speed        = 1;
  91         physics_override_jump         = 1;
  92         physics_override_gravity      = 1;
  93         physics_override_sneak        = true;
  94         physics_override_sneak_glitch = true;
  95
  96         hud_flags = HUD_FLAG_HOTBAR_VISIBLE | HUD_FLAG_HEALTHBAR_VISIBLE |
  97                          HUD_FLAG_CROSSHAIR_VISIBLE | HUD_FLAG_WIELDITEM_VISIBLE |
  98                          HUD_FLAG_BREATHBAR_VISIBLE;
  99
 100         hud_hotbar_itemcount = HUD_HOTBAR_ITEMCOUNT_DEFAULT;
 101 }
 102
 103 Player::~Player()
 104 {
 105         clearHud();
 106 }
 107
 108 // Horizontal acceleration (X and Z), Y direction is ignored
 109 void Player::accelerateHorizontal(v3f target_speed, f32 max_increase)
 110 {
 111         if(max_increase == 0)
 112                 return;
 113
 114         v3f d_wanted = target_speed - m_speed;
 115         d_wanted.Y = 0;
 116         f32 dl = d_wanted.getLength();
 117         if(dl > max_increase)
 118                 dl = max_increase;
 119
 120         v3f d = d_wanted.normalize() * dl;
 121
 122         m_speed.X += d.X;
 123         m_speed.Z += d.Z;
 124
 125 #if 0 // old code
 126         if(m_speed.X < target_speed.X - max_increase)
 127                 m_speed.X += max_increase;
 128         else if(m_speed.X > target_speed.X + max_increase)
 129                 m_speed.X -= max_increase;
 130         else if(m_speed.X < target_speed.X)
 131                 m_speed.X = target_speed.X;
 132         else if(m_speed.X > target_speed.X)
 133                 m_speed.X = target_speed.X;
 134
 135         if(m_speed.Z < target_speed.Z - max_increase)
 136                 m_speed.Z += max_increase;
 137         else if(m_speed.Z > target_speed.Z + max_increase)
 138                 m_speed.Z -= max_increase;
 139         else if(m_speed.Z < target_speed.Z)
 140                 m_speed.Z = target_speed.Z;
 141         else if(m_speed.Z > target_speed.Z)
 142                 m_speed.Z = target_speed.Z;
 143 #endif
 144 }
 145
 146 // Vertical acceleration (Y), X and Z directions are ignored
 147 void Player::accelerateVertical(v3f target_speed, f32 max_increase)
 148 {
 149         if(max_increase == 0)
 150                 return;
 151
 152         f32 d_wanted = target_speed.Y - m_speed.Y;
 153         if(d_wanted > max_increase)
 154                 d_wanted = max_increase;
 155         else if(d_wanted < -max_increase)
 156                 d_wanted = -max_increase;
 157
 158         m_speed.Y += d_wanted;
 159
 160 #if 0 // old code
 161         if(m_speed.Y < target_speed.Y - max_increase)
 162                 m_speed.Y += max_increase;
 163         else if(m_speed.Y > target_speed.Y + max_increase)
 164                 m_speed.Y -= max_increase;
 165         else if(m_speed.Y < target_speed.Y)
 166                 m_speed.Y = target_speed.Y;
 167         else if(m_speed.Y > target_speed.Y)
 168                 m_speed.Y = target_speed.Y;
 169 #endif
 170 }
 171
 172 v3s16 Player::getLightPosition() const
 173 {
 174         return floatToInt(m_position + v3f(0,BS+BS/2,0), BS);
 175 }
 176
 177 void Player::serialize(std::ostream &os)
 178 {
 179         // Utilize a Settings object for storing values
 180         Settings args;
 181         args.setS32("version", 1);
 182         args.set("name", m_name);
 183         //args.set("password", m_password);
 184         args.setFloat("pitch", m_pitch);
 185         args.setFloat("yaw", m_yaw);
 186         args.setV3F("position", m_position);
 187         args.setS32("hp", hp);
 188         args.setS32("breath", m_breath);
 189
 190         args.writeLines(os);
 191
 192         os<<"PlayerArgsEnd\n";
 193
 194         inventory.serialize(os);
 195 }
 196
 197 void Player::deSerialize(std::istream &is, std::string playername)
 198 {
 199         Settings args;
 200
 201         if (!args.parseConfigLines(is, "PlayerArgsEnd")) {
 202                 throw SerializationError("PlayerArgsEnd of player " +
 203                                 playername + " not found!");
 204         }
 205
 206         //args.getS32("version"); // Version field value not used
 207         std::string name = args.get("name");
 208         strlcpy(m_name, name.c_str(), PLAYERNAME_SIZE);
 209         setPitch(args.getFloat("pitch"));
 210         setYaw(args.getFloat("yaw"));
 211         setPosition(args.getV3F("position"));
 212         try{
 213                 hp = args.getS32("hp");
 214         }catch(SettingNotFoundException &e) {
 215                 hp = 20;
 216         }
 217         try{
 218                 m_breath = args.getS32("breath");
 219         }catch(SettingNotFoundException &e) {
 220                 m_breath = 11;
 221         }
 222
 223         inventory.deSerialize(is);
 224
 225         if(inventory.getList("craftpreview") == NULL) {
 226                 // Convert players without craftpreview
 227                 inventory.addList("craftpreview", 1);
 228
 229                 bool craftresult_is_preview = true;
 230                 if(args.exists("craftresult_is_preview"))
 231                         craftresult_is_preview = args.getBool("craftresult_is_preview");
 232                 if(craftresult_is_preview)
 233                 {
 234                         // Clear craftresult
 235                         inventory.getList("craftresult")->changeItem(0, ItemStack());
 236                 }
 237         }
 238
 239         m_dirty = false;
 240 }
 241
 242 u32 Player::addHud(HudElement *toadd)
 243 {
 244         u32 id = getFreeHudID();
 245
 246         if (id < hud.size())
 247                 hud[id] = toadd;
 248         else
 249                 hud.push_back(toadd);
 250
 251         return id;
 252 }
 253
 254 HudElement* Player::getHud(u32 id)
 255 {
 256         if (id < hud.size())
 257                 return hud[id];
 258
 259         return NULL;
 260 }
 261
 262 HudElement* Player::removeHud(u32 id)
 263 {
 264         HudElement* retval = NULL;
 265         if (id < hud.size()) {
 266                 retval = hud[id];
 267                 hud[id] = NULL;
 268         }
 269         return retval;
 270 }
 271
 272 void Player::clearHud()
 273 {
 274         while(!hud.empty()) {
 275                 delete hud.back();
 276                 hud.pop_back();
 277         }
 278 }
 279
 280
 281 void RemotePlayer::save(std::string savedir)
 282 {
 283         /*
 284          * We have to open all possible player files in the players directory
 285          * and check their player names because some file systems are not
 286          * case-sensitive and player names are case-sensitive.
 287          */
 288
 289         // A player to deserialize files into to check their names
 290         RemotePlayer testplayer(m_gamedef, "");
 291
 292         savedir += DIR_DELIM;
 293         std::string path = savedir + m_name;
 294         for (u32 i = 0; i < PLAYER_FILE_ALTERNATE_TRIES; i++) {
 295                 if (!fs::PathExists(path)) {
 296                         // Open file and serialize
 297                         std::ostringstream ss(std::ios_base::binary);
 298                         serialize(ss);
 299                         if (!fs::safeWriteToFile(path, ss.str())) {
 300                                 infostream << "Failed to write " << path << std::endl;
 301                         }
 302                         m_dirty = false;
 303                         return;
 304                 }
 305                 // Open file and deserialize
 306                 std::ifstream is(path.c_str(), std::ios_base::binary);
 307                 if (!is.good()) {
 308                         infostream << "Failed to open " << path << std::endl;
 309                         return;
 310                 }
 311                 testplayer.deSerialize(is, path);
 312                 is.close();
 313                 if (strcmp(testplayer.getName(), m_name) == 0) {
 314                         // Open file and serialize
 315                         std::ostringstream ss(std::ios_base::binary);
 316                         serialize(ss);
 317                         if (!fs::safeWriteToFile(path, ss.str())) {
 318                                 infostream << "Failed to write " << path << std::endl;
 319                         }
 320                         m_dirty = false;
 321                         return;
 322                 }
 323                 path = savedir + m_name + itos(i);
 324         }
 325
 326         infostream << "Didn't find free file for player " << m_name << std::endl;
 327         return;
 328 }
 329
 330 /*
 331         RemotePlayer
 332 */
 333 void RemotePlayer::setPosition(const v3f &position)
 334 {
 335         Player::setPosition(position);
 336         if(m_sao)
 337                 m_sao->setBasePosition(position);
 338 }
 339