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Added some raytrace functions

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Calclavia 2013-08-03 16:39:11 -04:00
parent eee616a58c
commit 0496b44c0d
1 changed files with 67 additions and 0 deletions
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67
src/resonantinduction/base/Vector3.java
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@ -3,8 +3,13 @@
*/
package resonantinduction.base;
import java.util.List;
import net.minecraft.entity.Entity;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.Vec3;
import net.minecraft.world.World;
/**
@ -218,6 +223,68 @@ public class Vector3
return world.getBlockTileEntity((int) this.x, (int) this.y, (int) this.z);
}
public MovingObjectPosition rayTraceEntities(World world, float rotationYaw, float rotationPitch, boolean collisionFlag, double reachDistance)
{
MovingObjectPosition pickedEntity = null;
Vec3 startingPosition = this.toVec3();
Vec3 look = getDeltaPositionFromRotation(rotationYaw, rotationPitch).toVec3();
Vec3 reachPoint = Vec3.createVectorHelper(startingPosition.xCoord + look.xCoord * reachDistance, startingPosition.yCoord + look.yCoord * reachDistance, startingPosition.zCoord + look.zCoord * reachDistance);
double playerBorder = 1.1 * reachDistance;
AxisAlignedBB boxToScan = AxisAlignedBB.getAABBPool().getAABB(-playerBorder, -playerBorder, -playerBorder, playerBorder, playerBorder, playerBorder);
@SuppressWarnings("unchecked")
List<Entity> entitiesHit = world.getEntitiesWithinAABBExcludingEntity(null, boxToScan);
double closestEntity = reachDistance;
if (entitiesHit == null || entitiesHit.isEmpty())
{
return null;
}
for (Entity entityHit : entitiesHit)
{
if (entityHit != null && entityHit.canBeCollidedWith() && entityHit.boundingBox != null)
{
float border = entityHit.getCollisionBorderSize();
AxisAlignedBB aabb = entityHit.boundingBox.expand(border, border, border);
MovingObjectPosition hitMOP = aabb.calculateIntercept(startingPosition, reachPoint);
if (hitMOP != null)
{
if (aabb.isVecInside(startingPosition))
{
if (0.0D < closestEntity || closestEntity == 0.0D)
{
pickedEntity = new MovingObjectPosition(entityHit);
if (pickedEntity != null)
{
pickedEntity.hitVec = hitMOP.hitVec;
closestEntity = 0.0D;
}
}
}
else
{
double distance = startingPosition.distanceTo(hitMOP.hitVec);
if (distance < closestEntity || closestEntity == 0.0D)
{
pickedEntity = new MovingObjectPosition(entityHit);
pickedEntity.hitVec = hitMOP.hitVec;
closestEntity = distance;
}
}
}
}
}
return pickedEntity;
}
private Vec3 toVec3()
{
return Vec3.createVectorHelper(this.x, this.y, this.z);
}
@Override
public Vector3 clone()
{