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diff --git a/src/content_sao.cpp b/src/content_sao.cpp
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+/*
+Minetest-c55
+Copyright (C) 2010-2011 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 "content_sao.h"
+#include "collision.h"
+#include "environment.h"
+
+/*
+ TestSAO
+*/
+
+// Prototype
+TestSAO proto_TestSAO(NULL, 0, v3f(0,0,0));
+
+TestSAO::TestSAO(ServerEnvironment *env, u16 id, v3f pos):
+ ServerActiveObject(env, id, pos),
+ m_timer1(0),
+ m_age(0)
+{
+ ServerActiveObject::registerType(getType(), create);
+}
+
+ServerActiveObject* TestSAO::create(ServerEnvironment *env, u16 id, v3f pos,
+ const std::string &data)
+{
+ return new TestSAO(env, id, pos);
+}
+
+void TestSAO::step(float dtime, bool send_recommended)
+{
+ m_age += dtime;
+ if(m_age > 10)
+ {
+ m_removed = true;
+ return;
+ }
+
+ m_base_position.Y += dtime * BS * 2;
+ if(m_base_position.Y > 8*BS)
+ m_base_position.Y = 2*BS;
+
+ if(send_recommended == false)
+ return;
+
+ m_timer1 -= dtime;
+ if(m_timer1 < 0.0)
+ {
+ m_timer1 += 0.125;
+ //dstream<<"TestSAO: id="<<getId()<<" sending data"<<std::endl;
+
+ std::string data;
+
+ data += itos(0); // 0 = position
+ data += " ";
+ data += itos(m_base_position.X);
+ data += " ";
+ data += itos(m_base_position.Y);
+ data += " ";
+ data += itos(m_base_position.Z);
+
+ ActiveObjectMessage aom(getId(), false, data);
+ m_messages_out.push_back(aom);
+ }
+}
+
+
+/*
+ ItemSAO
+*/
+
+// Prototype
+ItemSAO proto_ItemSAO(NULL, 0, v3f(0,0,0), "");
+
+ItemSAO::ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
+ const std::string inventorystring):
+ ServerActiveObject(env, id, pos),
+ m_inventorystring(inventorystring),
+ m_speed_f(0,0,0),
+ m_last_sent_position(0,0,0)
+{
+ ServerActiveObject::registerType(getType(), create);
+}
+
+ServerActiveObject* ItemSAO::create(ServerEnvironment *env, u16 id, v3f pos,
+ const std::string &data)
+{
+ std::istringstream is(data, std::ios::binary);
+ char buf[1];
+ // read version
+ is.read(buf, 1);
+ u8 version = buf[0];
+ // check if version is supported
+ if(version != 0)
+ return NULL;
+ std::string inventorystring = deSerializeString(is);
+ dstream<<"ItemSAO::create(): Creating item \""
+ <<inventorystring<<"\""<<std::endl;
+ return new ItemSAO(env, id, pos, inventorystring);
+}
+
+void ItemSAO::step(float dtime, bool send_recommended)
+{
+ assert(m_env);
+
+ const float interval = 0.2;
+ if(m_move_interval.step(dtime, interval)==false)
+ return;
+ dtime = interval;
+
+ core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
+ collisionMoveResult moveresult;
+ // Apply gravity
+ m_speed_f += v3f(0, -dtime*9.81*BS, 0);
+ // Maximum movement without glitches
+ f32 pos_max_d = BS*0.25;
+ // Limit speed
+ if(m_speed_f.getLength()*dtime > pos_max_d)
+ m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+ v3f pos_f = getBasePosition();
+ v3f pos_f_old = pos_f;
+ moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
+ box, dtime, pos_f, m_speed_f);
+
+ if(send_recommended == false)
+ return;
+
+ if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+ {
+ setBasePosition(pos_f);
+ m_last_sent_position = pos_f;
+
+ std::ostringstream os(std::ios::binary);
+ char buf[6];
+ // command (0 = update position)
+ buf[0] = 0;
+ os.write(buf, 1);
+ // pos
+ writeS32((u8*)buf, m_base_position.X*1000);
+ os.write(buf, 4);
+ writeS32((u8*)buf, m_base_position.Y*1000);
+ os.write(buf, 4);
+ writeS32((u8*)buf, m_base_position.Z*1000);
+ os.write(buf, 4);
+ // create message and add to list
+ ActiveObjectMessage aom(getId(), false, os.str());
+ m_messages_out.push_back(aom);
+ }
+}
+
+std::string ItemSAO::getClientInitializationData()
+{
+ std::ostringstream os(std::ios::binary);
+ char buf[6];
+ // version
+ buf[0] = 0;
+ os.write(buf, 1);
+ // pos
+ writeS32((u8*)buf, m_base_position.X*1000);
+ os.write(buf, 4);
+ writeS32((u8*)buf, m_base_position.Y*1000);
+ os.write(buf, 4);
+ writeS32((u8*)buf, m_base_position.Z*1000);
+ os.write(buf, 4);
+ // inventorystring
+ os<<serializeString(m_inventorystring);
+ return os.str();
+}
+
+std::string ItemSAO::getStaticData()
+{
+ dstream<<__FUNCTION_NAME<<std::endl;
+ std::ostringstream os(std::ios::binary);
+ char buf[1];
+ // version
+ buf[0] = 0;
+ os.write(buf, 1);
+ // inventorystring
+ os<<serializeString(m_inventorystring);
+ return os.str();
+}
+
+InventoryItem * ItemSAO::createInventoryItem()
+{
+ try{
+ std::istringstream is(m_inventorystring, std::ios_base::binary);
+ InventoryItem *item = InventoryItem::deSerialize(is);
+ dstream<<__FUNCTION_NAME<<": m_inventorystring=\""
+ <<m_inventorystring<<"\" -> item="<<item
+ <<std::endl;
+ return item;
+ }
+ catch(SerializationError &e)
+ {
+ dstream<<__FUNCTION_NAME<<": serialization error: "
+ <<"m_inventorystring=\""<<m_inventorystring<<"\""<<std::endl;
+ return NULL;
+ }
+}
+
+
+/*
+ RatSAO
+*/
+
+// Prototype
+RatSAO proto_RatSAO(NULL, 0, v3f(0,0,0));
+
+RatSAO::RatSAO(ServerEnvironment *env, u16 id, v3f pos):
+ ServerActiveObject(env, id, pos),
+ m_is_active(false),
+ m_speed_f(0,0,0)
+{
+ ServerActiveObject::registerType(getType(), create);
+
+ m_oldpos = v3f(0,0,0);
+ m_last_sent_position = v3f(0,0,0);
+ m_yaw = 0;
+ m_counter1 = 0;
+ m_counter2 = 0;
+ m_age = 0;
+ m_touching_ground = false;
+}
+
+ServerActiveObject* RatSAO::create(ServerEnvironment *env, u16 id, v3f pos,
+ const std::string &data)
+{
+ std::istringstream is(data, std::ios::binary);
+ char buf[1];
+ // read version
+ is.read(buf, 1);
+ u8 version = buf[0];
+ // check if version is supported
+ if(version != 0)
+ return NULL;
+ return new RatSAO(env, id, pos);
+}
+
+void RatSAO::step(float dtime, bool send_recommended)
+{
+ assert(m_env);
+
+ if(m_is_active == false)
+ {
+ if(m_inactive_interval.step(dtime, 0.5)==false)
+ return;
+ }
+
+ /*
+ The AI
+ */
+
+ /*m_age += dtime;
+ if(m_age > 60)
+ {
+ // Die
+ m_removed = true;
+ return;
+ }*/
+
+ // Apply gravity
+ m_speed_f.Y -= dtime*9.81*BS;
+
+ /*
+ Move around if some player is close
+ */
+ bool player_is_close = false;
+ // Check connected players
+ core::list<Player*> players = m_env->getPlayers(true);
+ core::list<Player*>::Iterator i;
+ for(i = players.begin();
+ i != players.end(); i++)
+ {
+ Player *player = *i;
+ v3f playerpos = player->getPosition();
+ if(m_base_position.getDistanceFrom(playerpos) < BS*10.0)
+ {
+ player_is_close = true;
+ break;
+ }
+ }
+
+ m_is_active = player_is_close;
+
+ if(player_is_close == false)
+ {
+ m_speed_f.X = 0;
+ m_speed_f.Z = 0;
+ }
+ else
+ {
+ // Move around
+ v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+ f32 speed = 2*BS;
+ m_speed_f.X = speed * dir.X;
+ m_speed_f.Z = speed * dir.Z;
+
+ if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+ < dtime*speed/2)
+ {
+ m_counter1 -= dtime;
+ if(m_counter1 < 0.0)
+ {
+ m_counter1 += 1.0;
+ m_speed_f.Y = 5.0*BS;
+ }
+ }
+
+ {
+ m_counter2 -= dtime;
+ if(m_counter2 < 0.0)
+ {
+ m_counter2 += (float)(myrand()%100)/100*3.0;
+ m_yaw += ((float)(myrand()%200)-100)/100*180;
+ m_yaw = wrapDegrees(m_yaw);
+ }
+ }
+ }
+
+ m_oldpos = m_base_position;
+
+ /*
+ Move it, with collision detection
+ */
+
+ core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*2./3.,BS/3.);
+ collisionMoveResult moveresult;
+ // Maximum movement without glitches
+ f32 pos_max_d = BS*0.25;
+ // Limit speed
+ if(m_speed_f.getLength()*dtime > pos_max_d)
+ m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);
+ v3f pos_f = getBasePosition();
+ v3f pos_f_old = pos_f;
+ moveresult = collisionMoveSimple(&m_env->getMap(), pos_max_d,
+ box, dtime, pos_f, m_speed_f);
+ m_touching_ground = moveresult.touching_ground;
+
+ setBasePosition(pos_f);
+
+ if(send_recommended == false)
+ return;
+
+ if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+ {
+ m_last_sent_position = pos_f;
+
+ std::ostringstream os(std::ios::binary);
+ // command (0 = update position)
+ writeU8(os, 0);
+ // pos
+ writeV3F1000(os, m_base_position);
+ // yaw
+ writeF1000(os, m_yaw);
+ // create message and add to list
+ ActiveObjectMessage aom(getId(), false, os.str());
+ m_messages_out.push_back(aom);
+ }
+}
+
+std::string RatSAO::getClientInitializationData()
+{
+ std::ostringstream os(std::ios::binary);
+ // version
+ writeU8(os, 0);
+ // pos
+ writeV3F1000(os, m_base_position);
+ return os.str();
+}
+
+std::string RatSAO::getStaticData()
+{
+ //dstream<<__FUNCTION_NAME<<std::endl;
+ std::ostringstream os(std::ios::binary);
+ // version
+ writeU8(os, 0);
+ return os.str();
+}
+
+InventoryItem* RatSAO::createPickedUpItem()
+{
+ std::istringstream is("CraftItem rat 1", std::ios_base::binary);
+ InventoryItem *item = InventoryItem::deSerialize(is);
+ return item;
+}
+
+/*
+ Oerkki1SAO
+*/
+
+// Y is copied, X and Z change is limited
+void accelerate_xz(v3f &speed, v3f target_speed, f32 max_increase)
+{
+ v3f d_wanted = target_speed - speed;
+ d_wanted.Y = 0;
+ f32 dl_wanted = d_wanted.getLength();
+ f32 dl = dl_wanted;
+ if(dl > max_increase)
+ dl = max_increase;
+
+ v3f d = d_wanted.normalize() * dl;
+
+ speed.X += d.X;
+ speed.Z += d.Z;
+ speed.Y = target_speed.Y;
+}
+
+// Prototype
+Oerkki1SAO proto_Oerkki1SAO(NULL, 0, v3f(0,0,0));
+
+Oerkki1SAO::Oerkki1SAO(ServerEnvironment *env, u16 id, v3f pos):
+ ServerActiveObject(env, id, pos),
+ m_is_active(false),
+ m_speed_f(0,0,0)
+{
+ ServerActiveObject::registerType(getType(), create);
+
+ m_oldpos = v3f(0,0,0);
+ m_last_sent_position = v3f(0,0,0);
+ m_yaw = 0;
+ m_counter1 = 0;
+ m_counter2 = 0;
+ m_age = 0;
+ m_touching_ground = false;
+ m_hp = 20;
+ m_after_jump_timer = 0;
+}
+
+ServerActiveObject* Oerkki1SAO::create(ServerEnvironment *env, u16 id, v3f pos,
+ const std::string &data)
+{
+ std::istringstream is(data, std::ios::binary);
+ // read version
+ u8 version = readU8(is);
+ // read hp
+ u8 hp = readU8(is);
+ // check if version is supported
+ if(version != 0)
+ return NULL;
+ Oerkki1SAO *o = new Oerkki1SAO(env, id, pos);
+ o->m_hp = hp;
+ return o;
+}
+
+void Oerkki1SAO::step(float dtime, bool send_recommended)
+{
+ assert(m_env);
+
+ if(m_is_active == false)
+ {
+ if(m_inactive_interval.step(dtime, 0.5)==false)
+ return;
+ }
+
+ /*
+ The AI
+ */
+
+ m_age += dtime;
+ if(m_age > 120)
+ {
+ // Die
+ m_removed = true;
+ return;
+ }
+
+ m_after_jump_timer -= dtime;
+
+ v3f old_speed = m_speed_f;
+
+ // Apply gravity
+ m_speed_f.Y -= dtime*9.81*BS;
+
+ /*
+ Move around if some player is close
+ */
+ bool player_is_close = false;
+ bool player_is_too_close = false;
+ v3f near_player_pos;
+ // Check connected players
+ core::list<Player*> players = m_env->getPlayers(true);
+ core::list<Player*>::Iterator i;
+ for(i = players.begin();
+ i != players.end(); i++)
+ {
+ Player *player = *i;
+ v3f playerpos = player->getPosition();
+ f32 dist = m_base_position.getDistanceFrom(playerpos);
+ if(dist < BS*1.45)
+ {
+ player_is_too_close = true;
+ near_player_pos = playerpos;
+ break;
+ }
+ else if(dist < BS*15.0)
+ {
+ player_is_close = true;
+ near_player_pos = playerpos;
+ }
+ }
+
+ m_is_active = player_is_close;
+
+ v3f target_speed = m_speed_f;
+
+ if(!player_is_close)
+ {
+ target_speed = v3f(0,0,0);
+ }
+ else
+ {
+ // Move around
+
+ v3f ndir = near_player_pos - m_base_position;
+ ndir.Y = 0;
+ ndir.normalize();
+
+ f32 nyaw = 180./PI*atan2(ndir.Z,ndir.X);
+ if(nyaw < m_yaw - 180)
+ nyaw += 360;
+ else if(nyaw > m_yaw + 180)
+ nyaw -= 360;
+ m_yaw = 0.95*m_yaw + 0.05*nyaw;
+ m_yaw = wrapDegrees(m_yaw);
+
+ f32 speed = 2*BS;
+
+ if((m_touching_ground || m_after_jump_timer > 0.0)
+ && !player_is_too_close)
+ {
+ v3f dir(cos(m_yaw/180*PI),0,sin(m_yaw/180*PI));
+ target_speed.X = speed * dir.X;
+ target_speed.Z = speed * dir.Z;
+ }
+
+ if(m_touching_ground && (m_oldpos - m_base_position).getLength()
+ < dtime*speed/2)
+ {
+ m_counter1 -= dtime;
+ if(m_counter1 < 0.0)
+ {
+ m_counter1 += 0.2;
+ // Jump
+ target_speed.Y = 5.0*BS;
+ m_after_jump_timer = 1.0;
+ }
+ }
+
+ {
+ m_counter2 -= dtime;
+ if(m_counter2 < 0.0)
+ {
+ m_counter2 += (float)(myrand()%100)/100*3.0;
+ //m_yaw += ((float)(myrand()%200)-100)/100*180;
+ m_yaw += ((float)(myrand()%200)-100)/100*90;
+ m_yaw = wrapDegrees(m_yaw);
+ }
+ }
+ }
+
+ if((m_speed_f - target_speed).getLength() > BS*4 || player_is_too_close)
+ accelerate_xz(m_speed_f, target_speed, dtime*BS*8);
+ else
+ accelerate_xz(m_speed_f, target_speed, dtime*BS*4);
+
+ m_oldpos = m_base_position;
+
+ /*
+ Move it, with collision detection
+ */
+
+ core::aabbox3d<f32> box(-BS/3.,0.0,-BS/3., BS/3.,BS*5./3.,BS/3.);
+ collisionMoveResult moveresult;
+ // Maximum movement without glitches
+ f32 pos_max_d = BS*0.25;
+ /*// Limit speed
+ if(m_speed_f.getLength()*dtime > pos_max_d)
+ m_speed_f *= pos_max_d / (m_speed_f.getLength()*dtime);*/
+ v3f pos_f = getBasePosition();
+ v3f pos_f_old = pos_f;
+ moveresult = collisionMovePrecise(&m_env->getMap(), pos_max_d,
+ box, dtime, pos_f, m_speed_f);
+ m_touching_ground = moveresult.touching_ground;
+
+ // Do collision damage
+ float tolerance = BS*12;
+ float factor = BS*0.5;
+ v3f speed_diff = old_speed - m_speed_f;
+ // Increase effect in X and Z
+ speed_diff.X *= 2;
+ speed_diff.Z *= 2;
+ float vel = speed_diff.getLength();
+ if(vel > tolerance)
+ {
+ f32 damage_f = (vel - tolerance)/BS*factor;
+ u16 damage = (u16)(damage_f+0.5);
+ doDamage(damage);
+ }
+
+ setBasePosition(pos_f);
+
+ if(send_recommended == false && m_speed_f.getLength() < 3.0*BS)
+ return;
+
+ if(pos_f.getDistanceFrom(m_last_sent_position) > 0.05*BS)
+ {
+ m_last_sent_position = pos_f;
+
+ std::ostringstream os(std::ios::binary);
+ // command (0 = update position)
+ writeU8(os, 0);
+ // pos
+ writeV3F1000(os, m_base_position);
+ // yaw
+ writeF1000(os, m_yaw);
+ // create message and add to list
+ ActiveObjectMessage aom(getId(), false, os.str());
+ m_messages_out.push_back(aom);
+ }
+}
+
+std::string Oerkki1SAO::getClientInitializationData()
+{
+ std::ostringstream os(std::ios::binary);
+ // version
+ writeU8(os, 0);
+ // pos
+ writeV3F1000(os, m_base_position);
+ return os.str();
+}
+
+std::string Oerkki1SAO::getStaticData()
+{
+ //dstream<<__FUNCTION_NAME<<std::endl;
+ std::ostringstream os(std::ios::binary);
+ // version
+ writeU8(os, 0);
+ // hp
+ writeU8(os, m_hp);
+ return os.str();
+}
+
+u16 Oerkki1SAO::punch(const std::string &toolname, v3f dir)
+{
+ m_speed_f += dir*12*BS;
+
+ u16 amount = 5;
+ doDamage(amount);
+ return 65536/100;
+}
+
+void Oerkki1SAO::doDamage(u16 d)
+{
+ dstream<<"oerkki damage: "<<d<<std::endl;
+
+ if(d < m_hp)
+ {
+ m_hp -= d;
+ }
+ else
+ {
+ // Die
+ m_hp = 0;
+ m_removed = true;
+ }
+
+ {
+ std::ostringstream os(std::ios::binary);
+ // command (1 = damage)
+ writeU8(os, 1);
+ // amount
+ writeU8(os, d);
+ // create message and add to list
+ ActiveObjectMessage aom(getId(), false, os.str());
+ m_messages_out.push_back(aom);
+ }
+}
+
+
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