diff --git a/utils/geometry/circle.go b/utils/geometry/circle.go
index b6b1709..8da0aa8 100644
--- a/utils/geometry/circle.go
+++ b/utils/geometry/circle.go
@@ -13,7 +13,6 @@ func GenerateCircle[V generic.SignedNumber](radius V, points int) Shape[V] {
 		curAngle := float64(i) * angle
 		x := radius * V(math.Cos(curAngle))
 		y := radius * V(math.Sin(curAngle))
-
 		shape = append(shape, NewPoint(x, y))
 	}
 	return shape
diff --git a/utils/geometry/circle_test.go b/utils/geometry/circle_test.go
new file mode 100644
index 0000000..580c767
--- /dev/null
+++ b/utils/geometry/circle_test.go
@@ -0,0 +1,11 @@
+package geometry_test
+
+import (
+	"fmt"
+	"github.com/kercylan98/minotaur/utils/geometry"
+	"testing"
+)
+
+func TestGenerateCircle(t *testing.T) {
+	fmt.Println(geometry.GenerateCircle[float64](5, 12))
+}
diff --git a/utils/geometry/shape.go b/utils/geometry/shape.go
index 6af79aa..ef5a051 100644
--- a/utils/geometry/shape.go
+++ b/utils/geometry/shape.go
@@ -30,7 +30,7 @@ func (slf Shape[V]) String() string {
 			for x := left; x < left+width; x++ {
 				exist := false
 				for _, p := range slf {
-					if x == p.GetX() && y == p.GetY() {
+					if int(x) == int(p.GetX()) && int(y) == int(p.GetY()) {
 						exist = true
 						break
 					}