//EntryPoints can't be placed on the top two gridnos in a map. So all we do in this case
//is return the closest gridno. Returns TRUE if the mapindex changes.
BOOLEAN ValidateEntryPointGridNo( INT32 *sGridNo )
{
INT16 sXMapPos, sYMapPos;
INT16 sWorldX, sWorldY;
INT32 iNewMapX, iNewMapY;
INT32 sTopLimit, sBottomLimit;
if ( TileIsOutOfBounds( *sGridNo ) )
return FALSE; //entry point is non-existant
ConvertGridNoToXY( *sGridNo, &sXMapPos, &sYMapPos );
sTopLimit = 80;
sBottomLimit = gsBRY - gsTLY - 40;
//Get screen coordinates for current gridno
GetWorldXYAbsoluteScreenXY( sXMapPos, sYMapPos, &sWorldX, &sWorldY);
if( sWorldY < sTopLimit )
{
GetFromAbsoluteScreenXYWorldXY( &iNewMapX, &iNewMapY, sWorldX, sTopLimit );
}
else if( sWorldY > sBottomLimit )
{
GetFromAbsoluteScreenXYWorldXY( &iNewMapX, &iNewMapY, sWorldX, sBottomLimit );
}
else
{
return FALSE; //already valid
}
*sGridNo = MAPROWCOLTOPOS( iNewMapY/10, iNewMapX/10 );
return TRUE; //modified
}
// ubRadius in times of y or x cell sizes
BOOLEAN GridNoOnScreenAndAround( const INT32& sGridNo, const UINT8& ubRadius )
{
INT16 sNewCenterWorldX, sNewCenterWorldY;
INT16 sWorldX;
INT16 sWorldY;
UINT16 usXDiff = ubRadius*CELL_X_SIZE;
UINT16 usYDiff = ubRadius*CELL_Y_SIZE;
ConvertGridNoToXY( sGridNo, &sNewCenterWorldX, &sNewCenterWorldY );
// Get screen coordinates for current position of soldier
GetWorldXYAbsoluteScreenXY( (INT16)(sNewCenterWorldX), (INT16)(sNewCenterWorldY), &sWorldX, &sWorldY);
if ( sWorldX >= ( gsTopLeftWorldX - usXDiff )
&& sWorldX <= ( gsBottomRightWorldX + usXDiff )
&& sWorldY >= ( gsTopLeftWorldY - usYDiff + gsVIEWPORT_WINDOW_START_Y )
&& sWorldY <= ( gsBottomRightWorldY + usYDiff ) )
{
return( TRUE );
}
return( FALSE );
}