Method updatePathPreview

game/ui/tileview/battleview.cpp:2279–2372

}

void BattleView::updatePathPreview()
{
	auto target = selectedTilePosition;
	if (!lastSelectedUnit)
	{
		LogError("Trying to update path preview with no unit selected!?");
		return;
	}

	if (!lastSelectedUnit->canMove())
		return;
	auto &map = lastSelectedUnit->tileObject->map;
	auto to = map.getTile(target);

	// Standard check for passability
	while (true)
	{
		auto u = to->getUnitIfPresent(true, true, false, nullptr, false, true);
		auto unit = u ? u->getUnit() : nullptr;
		if (unit && unit->owner != battle.currentPlayer &&
		    battle.visibleUnits[battle.currentPlayer].find({&*state, unit->id}) ==
		        battle.visibleUnits[battle.currentPlayer].end())
		{
			unit = nullptr;
		}
		if (!to->getPassable(lastSelectedUnit->isLarge(),
		                     lastSelectedUnit->agent->type->bodyType->maxHeight) ||
		    unit)
		{
			previewedPathCost = static_cast<int>(PreviewedPathCostSpecial::UNREACHABLE);
			return;
		}
		if (lastSelectedUnit->canFly() || to->getCanStand(lastSelectedUnit->isLarge()))
		{
			break;
		}
		target.z--;
		if (target.z == -1)
		{
			LogError("Solid ground missing on level 0? Reached %d %d %d", target.x, target.y,
			         target.z);
			return;
		}
		to = map.getTile(target);
	}

	// Cost to move is 1.5x if prone and 0.5x if running, to keep things in integer
	// we use a value that is then divided by 2
	float cost = 0.0f;
	int cost_multiplier_x_2 = 2;
	if (lastSelectedUnit->agent->canRun() &&
	    lastSelectedUnit->movement_mode == MovementMode::Running)
	{
		cost_multiplier_x_2 = 1;
	}
	if (lastSelectedUnit->movement_mode == MovementMode::Prone)
	{
		cost_multiplier_x_2 = 3;