Peacekeeper NPC


This is a Peacekeeper NPC script, that when the people are in range of the npc, on the certain x, y coordinates, you will be not flagged for pvp. A simple way to make a sanctuary without a patch!



Script:
Code:
 #include "ScriptPCH.h"

typedef struct {float x, y;} Point;

// This is a list of X, Y coordinates that you want to make your "safe area"
// The first and last points MUST be the same for this to work
static const Point V[] = { {4519.443359f, 2709.068359f},
{4518.447266f, 2699.789795f},
{4512.137695f, 2689.388184f},
{4512.927734f, 2674.512207f},
{4515.222168f, 2658.663330f},
{4523.524902f, 2641.542480f},
{4536.573730f, 2630.782715f},
{4546.353027f, 2636.786865f},
{4562.053711f, 2651.318359f},
{4570.511719f, 2663.249756f},
{4578.481445f, 2696.588135f},
{4564.876465f, 2707.007324f},
{4542.565918f, 2708.313477f},
{4526.848145f, 2710.782471f},
{4519.443359f, 2709.068359f} };

static const int n = 14;

class npc_peacekeeper : public CreatureScript
{
public:
npc_peacekeeper() : CreatureScript("npc_peacekeeper") {}

CreatureAI* GetAI(Creature* c) const
{
return new npc_peacekeeperAI(c);
}

struct npc_peacekeeperAI : public ScriptedAI
{
npc_peacekeeperAI(Creature* c) : ScriptedAI(c) {}

int isLeft(Point P0, Point P1, Point P2)
{
return ( (P1.x - P0.x) * (P2.y - P0.y)
- (P2.x - P0.x) * (P1.y - P0.y) );
}

// Checks if a Point is inside the predefined area
bool IsInArea(Point P)
{
int wn = 0; 

for (int i=0; i < n; i++)
{ 
[I]if (V.y <= P.y)
{ 
if (V[i + 1].y > P.y) 
[I]if (isLeft(V, V[i+1], P) > 0) 
++wn; 
}
else
{ 
if (V[i + 1].y <= P.y) 
[I]if (isLeft(V, V[i+1], P) < 0) 
--wn; 
}
}
return wn != 0;
}
bool IsOutArea(Point P)
{
int wn = 0; 

for (int i=0; i < n; i++)
{ P.y=+4;
[I]if (V.y <= P.y)
{ 
if (V[i + 1].y > P.y) 
[I]if (isLeft(V, V[i+1], P) > 0) 
++wn; 
}
else
{ 
if (V[i + 1].y <= P.y) 
[I]if (isLeft(V, V[i+1], P) < 0) 
--wn; 
}
}
return wn != 0;
}

void Reset()
{
// Only run the check every 1 second rather than every update
// Not sure how intensive this algorithm is, but it's better to be safe
timer = 1000;
}

void UpdateAI(uint32 diff)
{

if (timer <= diff)
{
Map:playerList const& Players = me->GetMap()->GetPlayers();
for (Map:playerList::const_iterator itr = Players.begin(); itr != Players.end(); ++itr)
{
if (Player* player = itr->GetSource())
{
if (player->GetAreaId() != me->GetAreaId())
continue;
Point p = { player->GetPositionX(), player->GetPositionY() };

if (!IsInArea(p)){
if(player->pvpInfo.IsInNoPvPArea != true)
player->SetByteFlag(UNIT_FIELD_BYTES_2, 1, UNIT_BYTE2_FLAG_SANCTUARY);
player->pvpInfo.IsInNoPvPArea = true;
player->CombatStopWithPets();
}
}
}
timer = 1000;
} else timer -= diff;
}

uint32 timer;
};
};

void AddSC_npc_peacekeeper()
{
new npc_peacekeeper();
}




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