"""Execute town activation and no-pop-in policy, including split/invalid observers."""
from policy_harness import ROOT, body, run
p=ROOT/'addons/core/Scripts/Game/ERR/10_AI/ERR_TownGarrisons.c'
code=body(p,'static bool Safe(')+'\n'+body(p,'static bool Approached(')
code=code.replace('array<vector> players','Array<Vec>* players').replace('vector ', 'Vec ').replace('foreach (','for (').replace(' : players)', ' : *players)').replace('players.', 'players->').replace('vector.DistanceXZ','Vec::DistanceXZ').replace('ERR_ForceRules.FiniteVector','Finite')
run(r'''
#include <cassert>
#include <cmath>
#include <limits>
#include <vector>
struct Vec{float x,y,z;static float DistanceXZ(Vec a,Vec b){return std::hypot(a.x-b.x,a.z-b.z);}};
bool Finite(Vec v){return std::isfinite(v.x)&&std::isfinite(v.y)&&std::isfinite(v.z);}
template<class T>struct Array:std::vector<T>{using std::vector<T>::vector;bool IsEmpty(){return this->empty();}};
constexpr float DISTANCE=700;
'''+code+r'''
int main(){
 Array<Vec> empty,near={{0,1000,0}},far={{701,0,0}},edge={{700,0,0}},split={{700,0,0},{-699,0,0}};
 Vec origin{0,0,0};
 assert(!Safe(origin,nullptr)&&!Safe(origin,&empty)&&!Approached(origin,&empty));
 assert(!Safe(origin,&near)&&Approached(origin,&near)); // Horizontal distance, including helicopters
 assert(Safe(origin,&far)&&!Approached(origin,&far));
 assert(Safe(origin,&edge)&&Approached(origin,&edge)); // Exact 700m is safe and activates
 assert(!Safe(origin,&edge,702)); // Planning leaves a small ground-placement margin
 assert(!Safe(origin,&split)); // A distant lead player cannot hide a nearby teammate
 split[1]={-701,0,0}; assert(Safe(origin,&split));
 split[0]={699.99f,0,0}; assert(!Safe(origin,&split)); // Crossing boundary before birth rejects it
 split[0]={std::numeric_limits<float>::quiet_NaN(),0,0}; assert(!Safe(origin,&split));
 assert(!Safe(split[0],&edge)&&!Approached(split[0],&edge));
}
''')
print('PASS: town trigger and hard 700m exclusion for all observers, empty/invalid positions and final-check crossings')