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

/* (c) Shereef Marzouk. See "licence DDRace.txt" and the readme.txt in the root of the distribution for more information. */
#include <engine/config.h>
#include <engine/server.h>
#include <game/generated/protocol.h>
#include <game/server/gamecontext.h>
#include <game/server/teams.h>
#include <game/server/gamemodes/DDRace.h>
#include "dragger.h"

const int LENGTH = 700;

CDragger::CDragger(CGameWorld *pGameWorld, vec2 Pos, float Strength, bool NW,
		int CatchedTeam, int Layer, int Number) :
		CEntity(pGameWorld, CGameWorld::ENTTYPE_LASER)
{
	m_Layer = Layer;
	m_Number = Number;
	m_Pos = Pos;
	m_Strength = Strength;
	m_EvalTick = Server()->Tick();
	m_NW = NW;
	m_CatchedTeam = CatchedTeam;
	GameWorld()->InsertEntity(this);
}

void CDragger::Move()
{
	if (m_Target && m_Target->IsAlive()
			&& (m_Target->m_Super || m_Target->IsPaused()
					|| (m_Layer == LAYER_SWITCH
							&& !GameServer()->Collision()->m_pSwitchers[m_Number].m_Status[m_Target->Team()])))
		m_Target = 0;
	if (m_Target)
		return;
	CCharacter *Ents[MAX_CLIENTS];
	int Num = GameServer()->m_World.FindEntities(m_Pos, LENGTH,
			(CEntity**) Ents, 16, CGameWorld::ENTTYPE_CHARACTER);
	int Id = -1;
	int MinLen = 0;
	for (int i = 0; i < Num; i++)
	{
		m_Target = Ents[i];
		if (m_Target->Team() != m_CatchedTeam)
			continue;
		if (m_Layer == LAYER_SWITCH
				&& !GameServer()->Collision()->m_pSwitchers[m_Number].m_Status[m_Target->Team()])
			continue;
		int Res =
				m_NW ? GameServer()->Collision()->IntersectNoLaserNW(m_Pos,
								m_Target->m_Pos, 0, 0) :
						GameServer()->Collision()->IntersectNoLaser(m_Pos,
								m_Target->m_Pos, 0, 0);

		if (Res == 0)
		{
			int Len = length(m_Target->m_Pos - m_Pos);
			if (MinLen == 0 || MinLen > Len)
			{
				MinLen = Len;
				Id = i;
			}
		}
	}
	m_Target = Id != -1 ? Ents[Id] : 0;
}

void CDragger::Drag()
{
	if (m_Target)
	{

		int Res = 0;
		if (!m_NW)
			Res = GameServer()->Collision()->IntersectNoLaser(m_Pos,
					m_Target->m_Pos, 0, 0);
		else
			Res = GameServer()->Collision()->IntersectNoLaserNW(m_Pos,
					m_Target->m_Pos, 0, 0);
		if (Res || length(m_Pos - m_Target->m_Pos) > 700)
		{
			m_Target = 0;
		}
		else if (length(m_Pos - m_Target->m_Pos) > 28)
		{
			vec2 Temp = m_Target->Core()->m_Vel
					+ (normalize(m_Pos - m_Target->m_Pos) * m_Strength);
			if (Temp.x > 0
					&& ((m_Target->m_TileIndex == TILE_STOP
							&& m_Target->m_TileFlags == ROTATION_270)
							|| (m_Target->m_TileIndexL == TILE_STOP
									&& m_Target->m_TileFlagsL == ROTATION_270)
							|| (m_Target->m_TileIndexL == TILE_STOPS
									&& (m_Target->m_TileFlagsL == ROTATION_90
											|| m_Target->m_TileFlagsL
													== ROTATION_270))
							|| (m_Target->m_TileIndexL == TILE_STOPA)
							|| (m_Target->m_TileFIndex == TILE_STOP
									&& m_Target->m_TileFFlags == ROTATION_270)
							|| (m_Target->m_TileFIndexL == TILE_STOP
									&& m_Target->m_TileFFlagsL == ROTATION_270)
							|| (m_Target->m_TileFIndexL == TILE_STOPS
									&& (m_Target->m_TileFFlagsL == ROTATION_90
											|| m_Target->m_TileFFlagsL
													== ROTATION_270))
							|| (m_Target->m_TileFIndexL == TILE_STOPA)
							|| (m_Target->m_TileSIndex == TILE_STOP
									&& m_Target->m_TileSFlags == ROTATION_270)
							|| (m_Target->m_TileSIndexL == TILE_STOP
									&& m_Target->m_TileSFlagsL == ROTATION_270)
							|| (m_Target->m_TileSIndexL == TILE_STOPS
									&& (m_Target->m_TileSFlagsL == ROTATION_90
											|| m_Target->m_TileSFlagsL
													== ROTATION_270))
							|| (m_Target->m_TileSIndexL == TILE_STOPA)))
				Temp.x = 0;
			if (Temp.x < 0
					&& ((m_Target->m_TileIndex == TILE_STOP
							&& m_Target->m_TileFlags == ROTATION_90)
							|| (m_Target->m_TileIndexR == TILE_STOP
									&& m_Target->m_TileFlagsR == ROTATION_90)
							|| (m_Target->m_TileIndexR == TILE_STOPS
									&& (m_Target->m_TileFlagsR == ROTATION_90
											|| m_Target->m_TileFlagsR
													== ROTATION_270))
							|| (m_Target->m_TileIndexR == TILE_STOPA)
							|| (m_Target->m_TileFIndex == TILE_STOP
									&& m_Target->m_TileFFlags == ROTATION_90)
							|| (m_Target->m_TileFIndexR == TILE_STOP
									&& m_Target->m_TileFFlagsR == ROTATION_90)
							|| (m_Target->m_TileFIndexR == TILE_STOPS
									&& (m_Target->m_TileFFlagsR == ROTATION_90
											|| m_Target->m_TileFFlagsR
													== ROTATION_270))
							|| (m_Target->m_TileFIndexR == TILE_STOPA)
							|| (m_Target->m_TileSIndex == TILE_STOP
									&& m_Target->m_TileSFlags == ROTATION_90)
							|| (m_Target->m_TileSIndexR == TILE_STOP
									&& m_Target->m_TileSFlagsR == ROTATION_90)
							|| (m_Target->m_TileSIndexR == TILE_STOPS
									&& (m_Target->m_TileSFlagsR == ROTATION_90
											|| m_Target->m_TileSFlagsR
													== ROTATION_270))
							|| (m_Target->m_TileSIndexR == TILE_STOPA)))
				Temp.x = 0;
			if (Temp.y < 0
					&& ((m_Target->m_TileIndex == TILE_STOP
							&& m_Target->m_TileFlags == ROTATION_180)
							|| (m_Target->m_TileIndexB == TILE_STOP
									&& m_Target->m_TileFlagsB == ROTATION_180)
							|| (m_Target->m_TileIndexB == TILE_STOPS
									&& (m_Target->m_TileFlagsB == ROTATION_0
											|| m_Target->m_TileFlagsB
													== ROTATION_180))
							|| (m_Target->m_TileIndexB == TILE_STOPA)
							|| (m_Target->m_TileFIndex == TILE_STOP
									&& m_Target->m_TileFFlags == ROTATION_180)
							|| (m_Target->m_TileFIndexB == TILE_STOP
									&& m_Target->m_TileFFlagsB == ROTATION_180)
							|| (m_Target->m_TileFIndexB == TILE_STOPS
									&& (m_Target->m_TileFFlagsB == ROTATION_0
											|| m_Target->m_TileFFlagsB
													== ROTATION_180))
							|| (m_Target->m_TileFIndexB == TILE_STOPA)
							|| (m_Target->m_TileSIndex == TILE_STOP
									&& m_Target->m_TileSFlags == ROTATION_180)
							|| (m_Target->m_TileSIndexB == TILE_STOP
									&& m_Target->m_TileSFlagsB == ROTATION_180)
							|| (m_Target->m_TileSIndexB == TILE_STOPS
									&& (m_Target->m_TileSFlagsB == ROTATION_0
											|| m_Target->m_TileSFlagsB
													== ROTATION_180))
							|| (m_Target->m_TileSIndexB == TILE_STOPA)))
				Temp.y = 0;
			if (Temp.y > 0
					&& ((m_Target->m_TileIndex == TILE_STOP
							&& m_Target->m_TileFlags == ROTATION_0)
							|| (m_Target->m_TileIndexT == TILE_STOP
									&& m_Target->m_TileFlagsT == ROTATION_0)
							|| (m_Target->m_TileIndexT == TILE_STOPS
									&& (m_Target->m_TileFlagsT == ROTATION_0
											|| m_Target->m_TileFlagsT
													== ROTATION_180))
							|| (m_Target->m_TileIndexT == TILE_STOPA)
							|| (m_Target->m_TileFIndex == TILE_STOP
									&& m_Target->m_TileFFlags == ROTATION_0)
							|| (m_Target->m_TileFIndexT == TILE_STOP
									&& m_Target->m_TileFFlagsT == ROTATION_0)
							|| (m_Target->m_TileFIndexT == TILE_STOPS
									&& (m_Target->m_TileFFlagsT == ROTATION_0
											|| m_Target->m_TileFFlagsT
													== ROTATION_180))
							|| (m_Target->m_TileFIndexT == TILE_STOPA)
							|| (m_Target->m_TileSIndex == TILE_STOP
									&& m_Target->m_TileSFlags == ROTATION_0)
							|| (m_Target->m_TileSIndexT == TILE_STOP
									&& m_Target->m_TileSFlagsT == ROTATION_0)
							|| (m_Target->m_TileSIndexT == TILE_STOPS
									&& (m_Target->m_TileSFlagsT == ROTATION_0
											|| m_Target->m_TileSFlagsT
													== ROTATION_180))
							|| (m_Target->m_TileSIndexT == TILE_STOPA)))
				Temp.y = 0;
			m_Target->Core()->m_Vel = Temp;
		}
	}
}

void CDragger::Reset()
{
	GameServer()->m_World.DestroyEntity(this);
}

void CDragger::Tick()
{
	if (((CGameControllerDDRace*) GameServer()->m_pController)->m_Teams.GetTeamState(
			m_CatchedTeam) == CGameTeams::TEAMSTATE_EMPTY)
		return;
	if (Server()->Tick() % int(Server()->TickSpeed() * 0.15f) == 0)
	{
		int Flags;
		m_EvalTick = Server()->Tick();
		int index = GameServer()->Collision()->IsMover(m_Pos.x, m_Pos.y,
				&Flags);
		if (index)
		{
			m_Core = GameServer()->Collision()->CpSpeed(index, Flags);
		}
		m_Pos += m_Core;
		Move();
	}
	Drag();
	return;

}

void CDragger::Snap(int SnappingClient)
{
	if (((CGameControllerDDRace*) GameServer()->m_pController)->m_Teams.GetTeamState(
			m_CatchedTeam) == CGameTeams::TEAMSTATE_EMPTY)
		return;
	if (m_Target)
	{
		if (NetworkClipped(SnappingClient, m_Pos)
				&& NetworkClipped(SnappingClient, m_Target->m_Pos))
			return;
	}
	else if (NetworkClipped(SnappingClient, m_Pos))
		return;

	CCharacter * Char = GameServer()->GetPlayerChar(SnappingClient);
	int Tick = (Server()->Tick() % Server()->TickSpeed()) % 11;
	if (Char && Char->IsAlive()
			&& (m_Layer == LAYER_SWITCH
					&& !GameServer()->Collision()->m_pSwitchers[m_Number].m_Status[Char->Team()]
					&& (!Tick)))
		return;
	if (Char && Char->IsAlive())
	{
		if (Char->Team() != m_CatchedTeam)
			return;
	}
	else
	{
		// send to spectators only active draggers and some inactive from team 0
		if (!((m_Target && m_Target->IsAlive()) || m_CatchedTeam == 0))
			return;
	}

	CNetObj_Laser *obj = static_cast<CNetObj_Laser *>(Server()->SnapNewItem(
			NETOBJTYPE_LASER, m_ID, sizeof(CNetObj_Laser)));
	if (!obj)
		return;
	obj->m_X = (int) m_Pos.x;
	obj->m_Y = (int) m_Pos.y;
	if (m_Target)
	{
		obj->m_FromX = (int) m_Target->m_Pos.x;
		obj->m_FromY = (int) m_Target->m_Pos.y;
	}
	else
	{
		obj->m_FromX = (int) m_Pos.x;
		obj->m_FromY = (int) m_Pos.y;
	}

	int StartTick = m_EvalTick;
	if (StartTick < Server()->Tick() - 4)
		StartTick = Server()->Tick() - 4;
	else if (StartTick > Server()->Tick())
		StartTick = Server()->Tick();
	obj->m_StartTick = StartTick;
}

CDraggerTeam::CDraggerTeam(CGameWorld *pGameWorld, vec2 Pos, float Strength,
		bool NW, int Layer, int Number)
{
	for (int i = 0; i < MAX_CLIENTS; ++i)
	{
		m_Draggers[i] = new CDragger(pGameWorld, Pos, Strength, NW, i, Layer,
				Number);
	}
}

//CDraggerTeam::~CDraggerTeam() {
//for(int i = 0; i < MAX_CLIENTS; ++i) {
//	delete m_Draggers[i];
//}
//}