#include "Area.h"

Direction getOppositeDirection( Direction dir )
{
    switch( dir )
    {
    case NORTH:
        return SOUTH;
    case EAST:
        return WEST;
    case SOUTH:
        return NORTH;
    case WEST:
        return EAST;
    case TOP:
        return BOTTOM;
    case BOTTOM:
        return TOP;
    default:
        return NO_DIRECTION;
    }
}

Directions getDirections( Framework::Vec3<float> currentPos, Framework::Vec3<float> otherPos )
{
    Directions result = NO_DIRECTION;
    if( currentPos.x < otherPos.x )
        result |= EAST;
    if( currentPos.x > otherPos.x )
        result |= WEST;
    if( currentPos.y < otherPos.y )
        result |= SOUTH;
    if( currentPos.y > otherPos.y )
        result |= NORTH;
    if( currentPos.z < otherPos.z )
        result |= TOP;
    if( currentPos.z > otherPos.z )
        result |= BOTTOM;
    return result;
}

Framework::Vec3<int> getDirection( Directions dir )
{
    Framework::Vec3<int> result( 0, 0, 0 );
    if( (dir | NORTH) == dir )
        --result.y;
    if( (dir | EAST) == dir )
        ++result.x;
    if( (dir | SOUTH) == dir )
        ++result.y;
    if( (dir | WEST) == dir )
        --result.x;
    if( (dir | TOP) == dir )
        ++result.z;
    if( (dir | BOTTOM) == dir )
        --result.z;
    return result;
}

int getDirectionIndex( Direction dir )
{
    if( dir == NORTH )
        return 0;
    if( dir == EAST )
        return 1;
    if( dir == SOUTH )
        return 2;
    if( dir == WEST )
        return 3;
    if( dir == TOP )
        return 4;
    if( dir == BOTTOM )
        return 5;
    assert( false );
    return -1;
}

Direction getDirectionFromIndex( int index )
{
    return (Direction)(1 << index);
}