/**
* Center map on a certain position.
* @param mapPos Position to center on.
* @param redraw Redraw map or not.
*/
void Camera::centerOnPosition(const Position &mapPos, bool redraw)
{
Position screenPos;
_center = mapPos;
minMaxInt(&_center.x, -1, _mapLength);
minMaxInt(&_center.y, -1, _mapWidth);
convertMapToScreen(_center, &screenPos);
_mapOffset.x = -(screenPos.x - (_screenWidth / 2));
_mapOffset.y = -(screenPos.y - (_visibleMapHeight / 2));
_mapOffset.z = _center.z;
if (redraw) _map->draw();
}
/**
* Converts screen coordinates to map coordinates.
* @param screenX screen x position
* @param screenY screen y position
* @param mapX map x position
* @param mapY map y position
*/
void Camera::convertScreenToMap(int screenX, int screenY, int *mapX, int *mapY) const
{
// add half a tileheight to the mouseposition per layer we are above the floor
screenY += (-_spriteWidth/2) + (_mapOffset.z) * ((_spriteHeight + _spriteWidth / 4) / 2);
// calculate the actual x/y pixelposition on a diamond shaped map
// taking the view offset into account
*mapY = - screenX + _mapOffset.x + 2 * screenY - 2 * _mapOffset.y;
*mapX = screenY - _mapOffset.y - *mapY / 4 - (_spriteWidth/4);
// to get the row&col itself, divide by the size of a tile
*mapX /= (_spriteWidth / 4);
*mapY /= _spriteWidth;
minMaxInt(mapX, -1, _mapLength);
minMaxInt(mapY, -1, _mapWidth);
}
/**
* Set viewheight.
* @param viewheight
*/
void Camera::setViewHeight(int viewheight)
{
_mapOffset.z = viewheight;
minMaxInt(&_mapOffset.z, 0, _mapHeight-1);
_map->draw();
}
/**
* Sets the view level.
* @param viewlevel New view level.
*/
void Camera::setViewLevel(int viewlevel)
{
_mapOffset.z = viewlevel;
minMaxInt(&_mapOffset.z, 0, _mapsize_z-1);
_map->draw();
}
