float Action_MoveToTarget::preCondition()
{
/*
* Moving to the target has the following preconditions:
* - A target has been set.
* - The NPC is not in combat range.
*
* Here we take the fuzzy logic into account.
* If the npc is injured, the chance of fighting will decrease.
*/
if ( !m_ai )
{
return 0.0f;
}
P_CHAR currentVictim = m_ai->currentVictim();
if ( !currentVictim || !validTarget( m_npc, currentVictim ) )
{
return 0.0f;
}
Q_UINT8 range = 1;
P_ITEM weapon = m_npc->getWeapon();
if ( weapon )
{
if ( weapon->hasTag( "range" ) )
{
range = weapon->getTag( "range" ).toInt();
}
else if ( weapon->basedef() )
{
range = weapon->basedef()->getIntProperty( "range", 1 );
}
}
if ( m_npc->inRange( currentVictim, range ) )
return 0.0f;
// 1.0 = Full Health, 0.0 = Dead
float diff = 1.0 - wpMax<float>( 0, ( m_npc->maxHitpoints() - m_npc->hitpoints() ) / ( float ) m_npc->maxHitpoints() );
if ( diff <= m_npc->criticalHealth() / 100.0 )
{
return 0.0;
}
return 1.0;
}
float Action_MoveToTarget::postCondition()
{
/*
* Moving to the target has the following postconditions:
* - The target is not set anymore.
* - The NPC is within fight range.
* - The NPC is not injured above the critical line.
*/
if ( !m_ai )
{
return 1.0f;
}
P_CHAR currentVictim = m_ai->currentVictim();
if ( !currentVictim || !validTarget( m_npc, currentVictim ) )
return 1.0f;
Q_UINT8 range = 1;
P_ITEM weapon = m_npc->getWeapon();
if ( weapon )
{
if ( weapon->hasTag( "range" ) )
{
range = weapon->getTag( "range" ).toInt();
}
else if ( weapon->basedef() )
{
range = weapon->basedef()->getIntProperty( "range", 1 );
}
}
if ( m_npc->inRange( currentVictim, range ) )
return 1.0f;
// 1.0 = Full Health, 0.0 = Dead
float diff = 1.0 - wpMax<float>( 0, ( m_npc->maxHitpoints() - m_npc->hitpoints() ) / ( float ) m_npc->maxHitpoints() );
if ( diff <= m_npc->criticalHealth() / 100.0 )
{
return 1.0;
}
return 0.0;
}