ddnet/src/game/server/entities/dragger.cpp

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/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */
#include <engine/config.h>
#include <engine/server.h>
#include <game/generated/protocol.h>
#include <game/server/gamecontext.h>
#include "dragger.h"
//////////////////////////////////////////////////
// CDragger
//////////////////////////////////////////////////
const int LENGTH=700;
CDragger::CDragger(CGameWorld *pGameWorld, vec2 pos, float strength, bool nw)
: CEntity(pGameWorld, NETOBJTYPE_LASER)
{
this->m_Pos = pos;
this->strength = strength;
this->eval_tick=Server()->Tick();
this->nw=nw;
GameWorld()->InsertEntity(this);
}
void CDragger::move()
{
if (target)
return;
CCharacter *ents[16];
int num = -1;
num = GameServer()->m_World.FindEntities(m_Pos,LENGTH, (CEntity**)ents, 16, NETOBJTYPE_CHARACTER);
int id=-1;
int minlen=0;
for (int i = 0; i < num; i++)
{
target = ents[i];
int res=0;
if (!nw)
res = GameServer()->Collision()->IntersectNoLaserNW(m_Pos, target->m_Pos, 0, 0);
else
res = GameServer()->Collision()->IntersectNoLaser(m_Pos, target->m_Pos, 0, 0);
if (res==0)
{
int len=length(ents[i]->m_Pos - m_Pos);
if (minlen==0 || minlen>len)
{
minlen=len;
id=i;
}
}
}
if (id!=-1)
{
target = ents[id];
}
else
{
target=0;
}
}
void CDragger::drag()
{
if (target)
{
int res = 0;
if (!nw)
res = GameServer()->Collision()->IntersectNoLaserNW(m_Pos, target->m_Pos, 0, 0);
else
res = GameServer()->Collision()->IntersectNoLaser(m_Pos, target->m_Pos, 0, 0);
if (res || length(m_Pos-target->m_Pos)>700)
{
target=0;
}
else
if (length(m_Pos-target->m_Pos)>28)
{
target->m_Core.m_Vel+=normalize(m_Pos-target->m_Pos)*strength;
}
}
}
void CDragger::Reset()
{
GameServer()->m_World.DestroyEntity(this);
}
void CDragger::Tick()
{
if (Server()->Tick()%int(Server()->TickSpeed()*0.15f)==0)
{
eval_tick=Server()->Tick();
int index = GameServer()->Collision()->IsCp(m_Pos.x, m_Pos.y);
if (index)
{
core=GameServer()->Collision()->CpSpeed(index);
}
m_Pos+=core;
move();
}
drag();
return;
}
void CDragger::Snap(int snapping_client)
{
if (target)
{
if(NetworkClipped(snapping_client, m_Pos) && NetworkClipped(snapping_client,target->m_Pos))
return;
}
else
if(NetworkClipped(snapping_client,m_Pos))
return;
CNetObj_Laser *obj = static_cast<CNetObj_Laser *>(Server()->SnapNewItem(NETOBJTYPE_LASER, m_Id, sizeof(CNetObj_Laser)));
obj->m_X = (int)m_Pos.x;
obj->m_Y = (int)m_Pos.y;
if (target)
{
obj->m_FromX = (int)target->m_Pos.x;
obj->m_FromY = (int)target->m_Pos.y;
}
else
{
obj->m_FromX = (int)m_Pos.x;
obj->m_FromY = (int)m_Pos.y;
}
int start_tick = eval_tick;
if (start_tick<Server()->Tick()-4)
start_tick=Server()->Tick()-4;
else if (start_tick>Server()->Tick())
start_tick=Server()->Tick();
obj->m_StartTick = start_tick;
}
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