first commit

Minecraft.World/LookControl.cpp

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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)
+{
+	this->wantedX = target->x;
+	shared_ptr<Mob> targetMob = dynamic_pointer_cast<Mob>(target);
+	if (targetMob != NULL) this->wantedY = target->y + targetMob->getHeadHeight();
+	else this->wantedY = (target->bb->y0 + target->bb->y1) / 2;
+	this->wantedZ = target->z;
+	this->yMax = yMax;
+	this->xMax = xMax;
+	hasWanted = true;
+}
+
+void LookControl::setLookAt(double x, double y, double z, float yMax, float xMax)
+{
+	this->wantedX = x;
+	this->wantedY = y;
+	this->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;
+}