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/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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 GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "environment.h"
#include "main.h" // g_device for timing debug
Environment::Environment(Map *map, std::ostream &dout):
m_dout(dout)
{
m_map = map;
}
Environment::~Environment()
{
// Deallocate players
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
delete (*i);
}
delete m_map;
}
void Environment::step(float dtime)
{
DSTACK(__FUNCTION_NAME);
/*
Run Map's timers
*/
//TimeTaker maptimerupdatetimer("m_map->timerUpdate()", g_device);
// 0ms
m_map->timerUpdate(dtime);
//maptimerupdatetimer.stop();
/*
Get the highest speed some player is going
*/
//TimeTaker playerspeed("playerspeed", g_device);
// 0ms
f32 maximum_player_speed = 0.001; // just some small value
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
f32 speed = (*i)->getSpeed().getLength();
if(speed > maximum_player_speed)
maximum_player_speed = speed;
}
//playerspeed.stop();
// Maximum time increment (for collision detection etc)
// Allow 0.1 blocks per increment
// time = distance / speed
f32 dtime_max_increment = 0.1*BS / maximum_player_speed;
// Maximum time increment is 10ms or lower
if(dtime_max_increment > 0.01)
dtime_max_increment = 0.01;
//TimeTaker playerupdate("playerupdate", g_device);
/*
Stuff that has a maximum time increment
*/
// Don't allow overly huge dtime
if(dtime > 0.5)
dtime = 0.5;
u32 loopcount = 0;
do
{
loopcount++;
f32 dtime_part;
if(dtime > dtime_max_increment)
dtime_part = dtime_max_increment;
else
dtime_part = dtime;
dtime -= dtime_part;
/*
Handle players
*/
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
// Apply gravity to local player
if(player->isLocal())
{
v3f speed = player->getSpeed();
speed.Y -= 9.81 * BS * dtime_part * 2;
player->setSpeed(speed);
}
/*
Move the player.
For local player, this also calculates collision detection.
*/
player->move(dtime_part, *m_map);
/*
Add footsteps to grass
*/
//TimeTaker footsteptimer("footstep", g_device);
// 0ms
v3f playerpos = player->getPosition();
// Get node that is at BS/4 under player
v3s16 bottompos = floatToInt(playerpos + v3f(0,-BS/4,0));
try{
MapNode n = m_map->getNode(bottompos);
if(n.d == MATERIAL_GRASS)
{
n.d = MATERIAL_GRASS_FOOTSTEPS;
m_map->setNode(bottompos, n);
// Update mesh on client
if(m_map->mapType() == MAPTYPE_CLIENT)
{
v3s16 p_blocks = getNodeBlockPos(bottompos);
MapBlock *b = m_map->getBlockNoCreate(p_blocks);
b->updateMesh();
}
}
}
catch(InvalidPositionException &e)
{
}
//footsteptimer.stop();
}
}
while(dtime > 0.001);
//std::cout<<"Looped "<<loopcount<<" times."<<std::endl;
}
Map & Environment::getMap()
{
return *m_map;
}
void Environment::addPlayer(Player *player)
{
DSTACK(__FUNCTION_NAME);
//Check that only one local player exists and peer_ids are unique
assert(player->isLocal() == false || getLocalPlayer() == NULL);
assert(getPlayer(player->peer_id) == NULL);
m_players.push_back(player);
}
void Environment::removePlayer(u16 peer_id)
{
DSTACK(__FUNCTION_NAME);
re_search:
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
if(player->peer_id != peer_id)
continue;
delete player;
m_players.erase(i);
// See if there is an another one
// (shouldn't be, but just to be sure)
goto re_search;
}
}
LocalPlayer * Environment::getLocalPlayer()
{
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
if(player->isLocal())
return (LocalPlayer*)player;
}
return NULL;
}
Player * Environment::getPlayer(u16 peer_id)
{
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
if(player->peer_id == peer_id)
return player;
}
return NULL;
}
core::list<Player*> Environment::getPlayers()
{
return m_players;
}
void Environment::printPlayers(std::ostream &o)
{
o<<"Players in environment:"<<std::endl;
for(core::list<Player*>::Iterator i = m_players.begin();
i != m_players.end(); i++)
{
Player *player = *i;
o<<"Player peer_id="<<player->peer_id<<std::endl;
}
}
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