void cMovingSprite :: Set_Image( cGL_Surface *new_image, bool new_start_image /* = 0 */, bool del_img /* = 0 */ )
{
// get a possible collision point change
GL_point col_pos_change = GL_point();
if( m_image && new_image )
{
col_pos_change = new_image->m_col_pos - m_image->m_col_pos;
}
cSprite::Set_Image( new_image, new_start_image, del_img );
// handle collision point change
if( col_pos_change.m_x != 0.0f || col_pos_change.m_y != 0.0f )
{
Move( -col_pos_change.m_x, -col_pos_change.m_y, 1 );
}
// check onground
Check_on_Ground();
}
// - operator
inline GL_point operator - (const GL_point& p) const
{
return GL_point(m_x - p.m_x, m_y - p.m_y);
}
// + operator
inline GL_point operator + (const GL_point& p) const
{
return GL_point(m_x + p.m_x, m_y + p.m_y);
}
