bool AISystem::MoveUnitTowardsEntity(Entity* selectedUnit, Entity* entity)
{
World* world = engine->GetContext()->GetWorld();
Pathfinder* pathfinder = engine->GetContext()->GetPathfinder();
vector<Grid> path = pathfinder->FindPath(selectedUnit, entity);
if (path.size() > 0)
{
PositionComponent* upc = dynamic_cast<PositionComponent*>(selectedUnit->GetComponent(Component::POSITION));
Grid lastStep = *(path.end() - 1);
SelectTarget(Graphics::Instance().ToPx(lastStep));
engine->GetContext()->SetGameState(Context::PL_MOVE);
selectedUnit->Add(new AnimationComponent(path, upc->pos));
engine->UpdateEntity(selectedUnit);
return true;
}
else
{
return false;
}
}
void SelectionSystem::CreateCurrentPath(Entity* unit, Entity* tile)
{
World* world = engine->GetContext()->GetWorld();
Pathfinder* pathfinder = engine->GetContext()->GetPathfinder();
int remainingAP = dynamic_cast<UnitComponent*>(unit->GetComponent(Component::UNIT))->ap;
std::vector<Grid> path = pathfinder->FindPath(unit, tile);
ClearCurrentPath();
// make new Entities with the selection sprite and add them to the engine
int counter = 1;
for (unsigned int i = 0; i < path.size(); i++)
{
Entity* step = new Entity();
if (counter <= remainingAP)
{
step->Add(new TextureComponent({ Graphics::SPRITE_PATH }));
}
else
{
step->Add(new TextureComponent({ Graphics::SPRITE_PATH_FAR }));
}
step->Add(new PositionComponent(path[i], 1));
engine->AddEntity(step);
currentPath.push_back(step);
counter++;
}
}
Entity* AISystem::FilterNearestEntity(Entity* selectedUnit, set<Entity*> entities)
{
Pathfinder* pathfinder = engine->GetContext()->GetPathfinder();
Entity* nearest = nullptr;
int pathSize;
int shortestPathSize = INT_MAX;
for (Entity* entity : entities)
{
vector<Grid> path = pathfinder->FindPath(selectedUnit, entity);
pathSize = static_cast<int>(path.size());
if (pathSize > 0 && pathSize < shortestPathSize)
{
shortestPathSize = pathSize;
nearest = entity;
}
}
return nearest;
}