void GhostChoose(struct Player *g)
{
if(g->intel==G_TRYING) {
g->intel=g->lastint;
Stupid(g);
} else
if(g->intel==G_EYES) {
g->intel=G_TRYING; g->lastint=G_EYES;
HomeIn(g,HomeX*BITMAP_X,HomeY*BITMAP_Y);
} else
if(g->intel==G_SMART) {
g->intel=G_TRYING; g->lastint=G_SMART;
HomeIn(g,Pac.zx,Pac.zy);
} else
if(g->intel==G_SCARED) {
g->intel=G_TRYING; g->lastint=G_SCARED;
Avoid(g,Pac.zx,Pac.zy);
}
}
/**
* Invoked each server tick
*/
void CFish::Update( float deltaT )
{
Vector deltaPos = GetAbsOrigin() - m_poolOrigin;
const float safetyMargin = 5.0f;
// pass relative position to the client
// clamp them here to cover the rare cases where a fish's high velocity skirts the range limit
m_x = clamp( deltaPos.x, -255.0f, 255.0f );
m_y = clamp( deltaPos.y, -255.0f, 255.0f );
m_z = m_poolOrigin->z;
//
// Dead fish just coast to a stop. All floating to the
// surface and bobbing motion is handled client-side.
//
if (m_lifeState == LIFE_DEAD)
{
// don't allow fish to leave maximum range of pool
if (deltaPos.IsLengthGreaterThan( m_pool->GetMaxRange() - safetyMargin ))
{
SetAbsVelocity( Vector( 0, 0, 0 ) );
}
else
{
// decay movement speed to zero
Vector vel = GetAbsVelocity();
const float drag = 1.0f;
vel -= drag * vel * deltaT;
SetAbsVelocity( vel );
}
return;
}
//
// Living fish behavior
//
// periodically change our turning preference
if (m_turnTimer.IsElapsed())
{
m_turnTimer.Start( RandomFloat( 10.0f, 30.0f ) );
m_turnClockwise = !m_turnClockwise;
}
if (m_panicTimer.GetRemainingTime() > 0.0f)
{
// panicking
m_desiredSpeed = m_panicSpeed;
}
else if (m_moveTimer.GetRemainingTime() > 0.0f)
{
// normal movement
m_desiredSpeed = m_calmSpeed;
}
else if (m_goTimer.IsElapsed())
{
// move every so often
m_goTimer.Start( RandomFloat( 10.0f, 60.0f ) );
m_moveTimer.Start( RandomFloat( 2.0f, 10.0 ) );
m_desiredSpeed = m_calmSpeed;
}
// avoid obstacles
float danger = Avoid();
// flock towards visible fish
for( int i=0; i<m_visible.Count(); ++i )
{
FlockTo( m_visible[i], (1.0f - danger) );
}
// flock towards center of pool
FlockTo( NULL, (1.0f - danger) );
//
// Update orientation
//
// limit rate of angular change - proportional to movement rate
const float maxAngleChange = (25.0f + 175.0f * (m_speed/m_panicSpeed)) * deltaT;
if (m_angleChange > maxAngleChange)
{
m_angleChange = maxAngleChange;
}
else if (m_angleChange < -maxAngleChange)
{
m_angleChange = -maxAngleChange;
}
m_angle += m_angleChange;
m_angleChange = 0.0f;
m_forward.x = cos( m_angle * M_PI/180.0f );
m_forward.y = sin( m_angle * M_PI/180.0f );
m_forward.z = 0.0f;
m_perp.x = -m_forward.y;
m_perp.y = m_forward.x;
m_perp.z = 0.0f;
//
// Update speed
//
const float rate = 2.0f;
m_speed += rate * (m_desiredSpeed - m_speed) * deltaT;
// decay desired speed if done moving
if (m_moveTimer.IsElapsed())
{
const float decayRate = 1.0f;
m_desiredSpeed -= decayRate * deltaT;
if (m_desiredSpeed < 0.0f)
{
m_desiredSpeed = 0.0f;
}
}
Vector vel = m_speed * m_forward;
// don't allow fish to leave maximum range of pool
if (deltaPos.IsLengthGreaterThan( m_pool->GetMaxRange() - safetyMargin ))
{
Vector toCenter = -deltaPos;
float radial = DotProduct( toCenter, vel );
if (radial < 0.0f)
{
// heading out of range, zero the radial velocity component
toCenter.NormalizeInPlace();
Vector perp( -toCenter.y, toCenter.x, 0.0f );
float side = DotProduct( perp, vel );
vel = side * perp;
}
}
SetAbsVelocity( vel );
m_flSpeed = m_speed;
}
