void CCSBot::MoveTowardsPosition(const Vector *pos)
{
// Jump up on ledges
// Because we may not be able to get to our goal position and enter the next
// area because our extent collides with a nearby vertical ledge, make sure
// we look far enough ahead to avoid this situation.
// Can't look too far ahead, or bots will try to jump up slopes.
// NOTE: We need to do this frequently to catch edges at the right time
// TODO: Look ahead *along path* instead of straight line
if ((m_lastKnownArea == NULL || !(m_lastKnownArea->GetAttributes() & NAV_NO_JUMP)) &&
!IsOnLadder() && !m_isJumpCrouching)
{
float ground;
Vector aheadRay(pos->x - pev->origin.x, pos->y - pev->origin.y, 0);
aheadRay.NormalizeInPlace();
// look far ahead to allow us to smoothly jump over gaps, ledges, etc
// only jump if ground is flat at lookahead spot to avoid jumping up slopes
bool jumped = false;
if (IsRunning())
{
const float farLookAheadRange = 80.0f;
Vector normal;
Vector stepAhead = pev->origin + farLookAheadRange * aheadRay;
stepAhead.z += HalfHumanHeight;
if (GetSimpleGroundHeightWithFloor(&stepAhead, &ground, &normal))
{
if (normal.z > 0.9f)
jumped = DiscontinuityJump(ground, ONLY_JUMP_DOWN);
}
}
if (!jumped)
{
// close up jumping
// cant be less or will miss jumps over low walls
const float lookAheadRange = 30.0f;
Vector stepAhead = pev->origin + lookAheadRange * aheadRay;
stepAhead.z += HalfHumanHeight;
if (GetSimpleGroundHeightWithFloor(&stepAhead, &ground))
{
jumped = DiscontinuityJump(ground);
}
}
if (!jumped)
{
// about to fall gap-jumping
const float lookAheadRange = 10.0f;
Vector stepAhead = pev->origin + lookAheadRange * aheadRay;
stepAhead.z += HalfHumanHeight;
if (GetSimpleGroundHeightWithFloor(&stepAhead, &ground))
{
jumped = DiscontinuityJump(ground, ONLY_JUMP_DOWN, MUST_JUMP);
}
}
}
// compute our current forward and lateral vectors
float angle = pev->v_angle.y;
Vector2D dir(BotCOS(angle), BotSIN(angle));
Vector2D lat(-dir.y, dir.x);
// compute unit vector to goal position
Vector2D to(pos->x - pev->origin.x, pos->y - pev->origin.y);
to.NormalizeInPlace();
// move towards the position independant of our view direction
float toProj = to.x * dir.x + to.y * dir.y;
float latProj = to.x * lat.x + to.y * lat.y;
const float c = 0.25f;
if (toProj > c)
MoveForward();
else if (toProj < -c)
MoveBackward();
// if we are avoiding someone via strafing, don't override
if (m_avoid != NULL)
return;
if (latProj >= c)
StrafeLeft();
else if (latProj <= -c)
StrafeRight();
}
void CHostageImprov::MoveTowards(const Vector &pos, float deltaT)
{
Vector move;
float_precision accelRate;
const float crouchWalkRate = 250.0f;
// Jump up on ledges
// Because we may not be able to get to our goal position and enter the next
// area because our extent collides with a nearby vertical ledge, make sure
// we look far enough ahead to avoid this situation.
// Can't look too far ahead, or bots will try to jump up slopes.
//
// NOTE: We need to do this frequently to catch edges at the right time
// TODO: Look ahead *along path* instead of straight line
ClearPath();
if ((m_lastKnownArea == NULL || !(m_lastKnownArea->GetAttributes() & NAV_NO_JUMP))
&& !IsUsingLadder() && !IsJumping() && IsOnGround() && !IsCrouching())
{
float ground;
Vector aheadRay(pos.x - GetFeet().x, pos.y - GetFeet().y, 0);
aheadRay.NormalizeInPlace();
bool jumped = false;
if (IsRunning())
{
const float farLookAheadRange = 80.0f;
Vector normal;
Vector stepAhead = GetFeet() + farLookAheadRange * aheadRay;
stepAhead.z += HumanHeight;
if (GetSimpleGroundHeightWithFloor(&stepAhead, &ground, &normal ))
{
if (normal.z > 0.9f)
jumped = DiscontinuityJump(ground, HOSTAGE_ONLY_JUMP_DOWN);
}
}
if (!jumped)
{
// close up jumping
// cant be less or will miss jumps over low walls
const float lookAheadRange = 30.0f;
Vector stepAhead = GetFeet() + lookAheadRange * aheadRay;
stepAhead.z += HumanHeight;
if (GetSimpleGroundHeightWithFloor(&stepAhead, &ground))
{
jumped = DiscontinuityJump(ground);
}
}
if (!jumped)
{
// about to fall gap-jumping
const float lookAheadRange = 10.0f;
Vector stepAhead = GetFeet() + lookAheadRange * aheadRay;
stepAhead.z += HumanHeight;
if (GetSimpleGroundHeightWithFloor(&stepAhead, &ground))
{
jumped = DiscontinuityJump(ground, HOSTAGE_ONLY_JUMP_DOWN, HOSTAGE_MUST_JUMP);
}
}
}
move = (pos - GetFeet());
move.z = 0;
if (!move.IsZero())
{
move.NormalizeInPlace();
}
switch (m_moveType)
{
case Stopped:
accelRate = 0;
break;
case Walking:
if (IsCrouching())
accelRate = crouchWalkRate;
else
accelRate = 400;
break;
case Running:
if (IsCrouching())
accelRate = crouchWalkRate;
else
accelRate = 1000;
break;
}
m_vel.x = move.x * accelRate * deltaT + m_vel.x;
m_vel.y = move.y * accelRate * deltaT + m_vel.y;
}