early tracer

src/main/java/carpet/helpers/Tracer.java

@@ -0,0 +1,16 @@
+package carpet.helpers;
+
+import net.minecraft.entity.Entity;
+import net.minecraft.util.hit.HitResult;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.RayTraceContext;
+
+public class Tracer
+{
+    public static HitResult traceEntityLook(Entity entity, double reach) {
+        Vec3d vec3d_1 = entity.getCameraPosVec(1.0F);
+        Vec3d vec3d_2 = entity.getRotationVec(1.0F);
+        Vec3d vec3d_3 = vec3d_1.add(vec3d_2.x * reach, vec3d_2.y * reach, vec3d_2.z * reach);
+        return entity.world.rayTrace(new RayTraceContext(vec3d_1, vec3d_3, RayTraceContext.ShapeType.OUTLINE, RayTraceContext.FluidHandling.ANY, entity));
+    }
+}