void CursorPositioningAction::Tick(TickParameters& tp)
{
if(mEventRcvr && mEventRcvr->GetClicked())
{
Vector3f ray_origin;
Vector3f ray_unit;
TouchData td = mEventRcvr->GetClick();
tp.camera->GetRay(td.GetTouchCentre(), ray_origin, ray_unit);
//Now check if collision occurs on each block
Vector3f intersect_point;
Vector3f intersection_normal;
Vector3f closest_intersect_point;
Vector3f closest_intersect_normal;
float intersect_distance;
float min_intersect_distance = FLT_MAX;
for (int x = 0; x < WORLD_WIDTH; x++)
{
for (int z = 0; z < WORLD_BREADTH; z++)
{
Column col = mWorld->getColumn(x, z);
for(int y = 0; y < WORLD_HEIGHT; y++)
{
Block block = col.Get(y);
if(block.blockType.Value() == BlockType::Empty)
continue;
if(Collisions3f::RayIntersectsAABB(ray_origin, ray_unit, Vector3f(static_cast<float>(x), static_cast<float>(y), static_cast<float>(z)), Vector3f(1.0f, 1.0f, 1.0f), intersect_point, intersect_distance, intersection_normal))
{
if(min_intersect_distance > intersect_distance)
{
closest_intersect_point = Vector3f(static_cast<float>(x), static_cast<float>(y), static_cast<float>(z));
closest_intersect_normal = intersection_normal;
min_intersect_distance = intersect_distance;
}
}
}
}
}
if (min_intersect_distance < FLT_MAX)
{
// Cursor to top of stack
Column col = mWorld->getColumn(static_cast<int>(closest_intersect_point.x), static_cast<int>(closest_intersect_point.z));
closest_intersect_point.y = static_cast<float>(col.GetHeight()) + 1.0f;
tp.msg.GetHub<CursorMoveMessage>().Broadcast(CursorMoveMessage(closest_intersect_point));
Log::Debug(__FILE__, "Intersection at (%f,%f,%f)", closest_intersect_point.x, closest_intersect_point.y, closest_intersect_point.z);
}
}
}
