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#include "stdafx.h"
#include "net.minecraft.world.entity.ai.navigation.h"
#include "net.minecraft.world.entity.h"
#include "net.minecraft.world.phys.h"
#include "LookControl.h"
LookControl::LookControl(Mob *mob)
{
yMax = xMax = 0.0f;
hasWanted = false;
wantedX = wantedY = wantedZ = 0.0;
this->mob = mob;
}
void LookControl::setLookAt(shared_ptr<Entity> target, float yMax, float xMax)
{
wantedX = target->x;
if ( target->instanceof(eTYPE_LIVINGENTITY) ) wantedY = target->y + dynamic_pointer_cast<LivingEntity>(target)->getHeadHeight();
else wantedY = (target->bb->y0 + target->bb->y1) / 2;
wantedZ = target->z;
this->yMax = yMax;
this->xMax = xMax;
hasWanted = true;
}
void LookControl::setLookAt(double x, double y, double z, float yMax, float xMax)
{
wantedX = x;
wantedY = y;
wantedZ = z;
this->yMax = yMax;
this->xMax = xMax;
hasWanted = true;
}
void LookControl::tick()
{
mob->xRot = 0;
if (hasWanted)
{
hasWanted = false;
double xd = wantedX - mob->x;
double yd = wantedY - (mob->y + mob->getHeadHeight());
double zd = wantedZ - mob->z;
double sd = sqrt(xd * xd + zd * zd);
float yRotD = (float) (atan2(zd, xd) * 180 / PI) - 90;
float xRotD = (float) -(atan2(yd, sd) * 180 / PI);
mob->xRot = rotlerp(mob->xRot, xRotD, xMax);
mob->yHeadRot = rotlerp(mob->yHeadRot, yRotD, yMax);
}
else
{
mob->yHeadRot = rotlerp(mob->yHeadRot, mob->yBodyRot, 10);
}
float headDiffBody = Mth::wrapDegrees(mob->yHeadRot - mob->yBodyRot);
if (!mob->getNavigation()->isDone())
{
// head clamped to body
if (headDiffBody < -75) mob->yHeadRot = mob->yBodyRot - 75;
if (headDiffBody > 75) mob->yHeadRot = mob->yBodyRot + 75;
}
}
float LookControl::rotlerp(float a, float b, float max)
{
float diff = b - a;
while (diff < -180)
diff += 360;
while (diff >= 180)
diff -= 360;
if (diff > max)
{
diff = max;
}
if (diff < -max)
{
diff = -max;
}
return a + diff;
}
bool LookControl::isHasWanted()
{
return hasWanted;
}
float LookControl::getYMax()
{
return yMax;
}
float LookControl::getXMax()
{
return xMax;
}
double LookControl::getWantedX()
{
return wantedX;
}
double LookControl::getWantedY()
{
return wantedY;
}
double LookControl::getWantedZ()
{
return wantedZ;
}
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