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/*
===========================================================================
Copyright (C) 2024 the OpenMoHAA team
This file is part of OpenMoHAA source code.
OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
OpenMoHAA source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
// playerbot_rotation.cpp: Manages bot rotation
#include "playerbot.h"
BotRotation::BotRotation()
{
m_vAngDelta = vec_zero;
m_vAngSpeed = vec_zero;
m_vTargetAng = vec_zero;
m_vCurrentAng = vec_zero;
}
void BotRotation::SetControlledEntity(Player *newEntity)
{
controlledEntity = newEntity;
}
float AngleDifference(float ang1, float ang2)
{
float diff;
diff = ang1 - ang2;
if (ang1 > ang2) {
if (diff > 180.0) {
diff -= 360.0;
}
} else {
if (diff < -180.0) {
diff += 360.0;
}
}
return diff;
}
void BotRotation::TurnThink(usercmd_t& botcmd, usereyes_t& eyeinfo)
{
float diff;
float deltaDiff;
float factor;
float maxChange;
float maxChangeDelta;
float minChange;
float changeSpeed;
float speed;
int i;
factor = 1.0;
maxChange = 360;
minChange = 20;
changeSpeed = 15.0;
if (m_vTargetAng[PITCH] > 180) {
m_vTargetAng[PITCH] -= 360;
}
for (i = 0; i < 2; i++) {
m_vCurrentAng[i] = AngleMod(m_vCurrentAng[i]);
m_vTargetAng[i] = AngleMod(m_vTargetAng[i]);
diff = AngleDifference(m_vCurrentAng[i], m_vTargetAng[i]);
deltaDiff = fabs(diff);
maxChangeDelta = maxChange * level.frametime;
if (maxChangeDelta > deltaDiff) {
maxChangeDelta = deltaDiff;
}
if (deltaDiff >= minChange) {
m_vAngSpeed[i] = Q_min(1.0, m_vAngSpeed[i] + changeSpeed * level.frametime);
maxChangeDelta *= m_vAngSpeed[i];
} else {
m_vAngSpeed[i] = Q_max(0.0, m_vAngSpeed[i] - changeSpeed * level.frametime);
}
speed = diff * level.frametime * 10 * factor;
m_vAngDelta[i] = Q_clamp_float(speed, -maxChangeDelta, maxChangeDelta);
m_vCurrentAng[i] = AngleMod(m_vCurrentAng[i] - m_vAngDelta[i]);
}
if (m_vCurrentAng[PITCH] > 180) {
m_vCurrentAng[PITCH] -= 360;
}
eyeinfo.angles[0] = m_vCurrentAng[0];
eyeinfo.angles[1] = m_vCurrentAng[1];
botcmd.angles[0] = ANGLE2SHORT(m_vCurrentAng[0]) - controlledEntity->client->ps.delta_angles[0];
botcmd.angles[1] = ANGLE2SHORT(m_vCurrentAng[1]) - controlledEntity->client->ps.delta_angles[1];
botcmd.angles[2] = ANGLE2SHORT(m_vCurrentAng[2]) - controlledEntity->client->ps.delta_angles[2];
}
/*
====================
GetTargetAngles
Return the target angle
====================
*/
const Vector& BotRotation::GetTargetAngles() const
{
return m_vTargetAng;
}
/*
====================
SetTargetAngles
Set the bot's angle
====================
*/
void BotRotation::SetTargetAngles(Vector vAngles)
{
m_vTargetAng = vAngles;
}
/*
====================
AimAt
Make the bot face to the specified direction
====================
*/
void BotRotation::AimAt(Vector vPos)
{
Vector vDelta = vPos - controlledEntity->EyePosition();
Vector vTarget;
VectorNormalize(vDelta);
vectoangles(vDelta, vTarget);
SetTargetAngles(vTarget);
}
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