diff --git a/src/goal_marker.cpp b/src/goal_marker.cpp
index 91dff02..833d9b0 100644
--- a/src/goal_marker.cpp
+++ b/src/goal_marker.cpp
@@ -38,8 +38,7 @@ float GoalMarker::get_radius() const {
 
 void LineGoalMarker::_bind_methods() {
 #define CLASSNAME LineGoalMarker
-    GDPROPERTY(left, Variant::FLOAT);
-    GDPROPERTY(right, Variant::FLOAT);
+    GDPROPERTY(extent, Variant::FLOAT);
 }
 
 bool LineGoalMarker::is_point_on(Vector3 point) {
@@ -48,25 +47,17 @@ bool LineGoalMarker::is_point_on(Vector3 point) {
 
 Vector3 LineGoalMarker::nearest_point_on(Vector3 point) {
     Basis const &basis{this->get_global_basis()};
-    Vector3 const right_unit{basis.get_column(0).normalized()};
-    Vector3 const leftvec{(right_unit * -left) + this->get_global_position()};
-    float const length{Math::abs(right - left)};
-    return leftvec + right_unit * Math::clamp(right_unit.dot(point - leftvec), 0.f, length);
+    Vector3 const left_unit{basis.get_column(0).normalized()};
+    Vector3 const right_vec{this->get_global_position() + left_unit * -extent};
+    float const length{extent * 2.f};
+    return right_vec + left_unit * Math::clamp(left_unit.dot(point - right_vec), 0.f, length);
 }
 
-void LineGoalMarker::set_left(float left) {
-    this->left = left;
+void LineGoalMarker::set_extent(float extent) {
+    this->extent = extent;
 }
 
-float LineGoalMarker::get_left() const {
-    return this->left;
-}
-
-void LineGoalMarker::set_right(float right) {
-    this->right = right;
-}
-
-float LineGoalMarker::get_right() const {
-    return this->right;
+float LineGoalMarker::get_extent() const {
+    return this->extent;
 }
 }
diff --git a/src/goal_marker.hpp b/src/goal_marker.hpp
index 6ccb3fa..e9b198b 100644
--- a/src/goal_marker.hpp
+++ b/src/goal_marker.hpp
@@ -27,18 +27,16 @@ protected:
 };
 
 class LineGoalMarker : public GoalMarker {
-    GDCLASS(LineGoalMarker, Area3D);
+    GDCLASS(LineGoalMarker, GoalMarker);
     static void _bind_methods();
 public:
     virtual bool is_point_on(Vector3 point) override;
     virtual Vector3 nearest_point_on(Vector3 near_to) override;
 
-    void set_left(float left);
-    float get_left() const;
-    void set_right(float right);
-    float get_right() const;
+    void set_extent(float left);
+    float get_extent() const;
 private:
-    float left{0.5f}, right{0.5f};
+    float extent{0.5f};
 };
 }