/**
* Handle jumping with given deviation.
*/
void Camera::jumpXY(int x, int y)
{
int oldX = _mapOffset.x, oldY= _mapOffset.y;
_mapOffset.x += x;
_mapOffset.y += y;
convertScreenToMap((_screenWidth / 2), (_visibleMapHeight / 2), &_center.x, &_center.y);
// if center goes out of map bounds, hold the scrolling
if (_center.x > _mapsize_x -1 || _center.x < 0 ||
_center.y > _mapsize_y -1 || _center.y < 0 )
{
for (int k=1; k<128; ++k) //try intermediate values
{
_mapOffset.x = oldX + x*k/128;
_mapOffset.y = oldY + y*k/128;
convertScreenToMap((_screenWidth / 2), (_visibleMapHeight / 2), &_center.x, &_center.y);
if (_center.x > _mapsize_x -1 || _center.x < 0 ||
_center.y > _mapsize_y -1 || _center.y < 0 )
{
//step back
_mapOffset.x = oldX + x*(k-1)/128;
_mapOffset.y = oldY + y*(k-1)/128;
break;
}
}
}
}
/**
* Handle scrolling with given deviation.
*/
void Camera::scrollXY(int x, int y, bool redraw)
{
_mapOffset.x += x;
_mapOffset.y += y;
convertScreenToMap((_screenWidth / 2), (_screenHeight / 2), &_center.x, &_center.y);
// if center goes out of map bounds, hold the scrolling (may need further tweaking)
if (_center.x > _mapWidth - 1 || _center.y > _mapLength - 1 || _center.x < 0 || _center.y < 0)
{
_mapOffset.x -= x;
_mapOffset.y -= y;
}
if (redraw) _map->draw();
}
/**
* Handle scrolling.
*/
void Camera::scroll()
{
_mapOffset.x += _scrollX;
_mapOffset.y += _scrollY;
convertScreenToMap((_screenWidth / 2), (_screenHeight / 2), &_center.x, &_center.y);
// if center goes out of map bounds, hold the scrolling (may need further tweaking)
if (_center.x > _mapWidth - 1 || _center.y > _mapLength - 1 || _center.x < 0 || _center.y < 0)
{
_mapOffset.x -= _scrollX;
_mapOffset.y -= _scrollY;
}
_map->draw();
}
/**
* Handle scrolling with given deviation.
*/
bool Camera::scrollXY(int x, int y, bool redraw)
{
bool result = true;
_mapOffset.x += x;
_mapOffset.y += y;
convertScreenToMap((_screenWidth / 2), (_visibleMapHeight / 2), &_center.x, &_center.y);
// if center goes out of map bounds, hold the scrolling
if (_center.x > _mapsize_x -1 || _center.x < 0 ||
_center.y > _mapsize_y -1 || _center.y < 0 )
{
_mapOffset.x -= x;
_mapOffset.y -= y;
result = false;
}
if (redraw) _map->draw();
return result;
}
/**
* Handles scrolling with given deviation.
* @param x X deviation.
* @param y Y deviation.
* @param redraw Redraw map or not.
*/
void Camera::scrollXY(int x, int y, bool redraw)
{
_mapOffset.x += x;
_mapOffset.y += y;
do
{
convertScreenToMap((_screenWidth / 2), (_visibleMapHeight / 2), &_center.x, &_center.y);
// Handling map bounds...
// Ok, this is a prototype, it should be optimized.
// Actually this should be calculated instead of slow-approximation.
if (_center.x < 0) { _mapOffset.x -= 1; _mapOffset.y -= 1; continue; }
if (_center.x > _mapsize_x -1) { _mapOffset.x += 1; _mapOffset.y += 1; continue; }
if (_center.y < 0) { _mapOffset.x += 1; _mapOffset.y -= 1; continue; }
if (_center.y > _mapsize_y -1) { _mapOffset.x -= 1; _mapOffset.y += 1; continue; }
break;
}
while (true);
_map->refreshSelectorPosition();
if (redraw) _map->invalidate();
}
/**
* Handles jumping with given deviation.
* @param x X deviation.
* @param y Y deviation.
*/
void Camera::jumpXY(int x, int y)
{
_mapOffset.x += x;
_mapOffset.y += y;
convertScreenToMap((_screenWidth / 2), (_visibleMapHeight / 2), &_center.x, &_center.y);
}
