deter civilians from walking on fire, let silacoids ignore it.

Author: Warboy1982

src/Battlescape/Pathfinding.cpp

@@ -433,7 +433,8 @@ int Pathfinding::getTUCost(const Position &startPosition, int direction, Positio
 				cost = (int)((double)cost * 1.5);
 			}
 			cost += wallcost;
-			if (_unit->getFaction() == FACTION_HOSTILE &&
+			if (_unit->getFaction() != FACTION_PLAYER &&
+				_unit->getSpecab() < SPECAB_BURNFLOOR &&
 				destinationTile->getFire() > 0)
 				cost += 32; // try to find a better path, but don't exclude this path entirely.
 

src/Battlescape/UnitWalkBState.cpp

@@ -281,7 +281,8 @@ void UnitWalkBState::think()
 
 			Position destination;
 			int tu = _pf->getTUCost(_unit->getPosition(), dir, &destination, _unit, 0, false); // gets tu cost, but also gets the destination position.
-			if (_unit->getFaction() == FACTION_HOSTILE &&
+			if (_unit->getFaction() != FACTION_PLAYER &&
+				_unit->getSpecab() < SPECAB_BURNFLOOR &&
 				_parent->getSave()->getTile(destination)->getFire() > 0)
 			{
 				tu -= 32; // we artificially inflate the TU cost by 32 points in getTUCost under these conditions, so we have to deflate it here.