capsule/bullet collider

Added a feature to the capsule collider 2D which can transform the
capsule into a bullet

Custom 2D Colliders/Scripts/CapsuleCollider2D.cs

@@ -35,6 +35,10 @@
 [RequireComponent(typeof(EdgeCollider2D))]
 public class CapsuleCollider2D : MonoBehaviour {
 
+    [HideInInspector]
+    public bool bullet = false, flip = false;
+
+    [HideInInspector]
     [Range(.5f, 25)]
     public float radius = 1;
 
@@ -48,50 +52,85 @@ public class CapsuleCollider2D : MonoBehaviour {
     public int rotation = 0;
 
     Vector2 origin, center, center1, center2;
-
+    List<Vector2> points;
+    float ang = 0;
+
     public Vector2[] getPoints(Vector2 off)
     {
-        List<Vector2> points = new List<Vector2>();
+        points = new List<Vector2>();
 
         origin = transform.localPosition;
         center = origin + off;
 
         float r = (height / 2f) - (radius);
+
+        if (bullet && flip) r += radius;
 
         center1.x = center.x + r * Mathf.Sin(rotation * Mathf.Deg2Rad);
         center1.y = center.y + r * Mathf.Cos(rotation * Mathf.Deg2Rad);
 
+        if (bullet) {
+            if (!flip) r += radius;
+            else r -= radius;
+        }
+
         center2.x = center.x + r * Mathf.Sin((rotation + 180f) * Mathf.Deg2Rad);
         center2.y = center.y + r * Mathf.Cos((rotation + 180f) * Mathf.Deg2Rad);
 
-        float ang = 360 - rotation;
-
-        for (int i = 0; i <= smoothness/2; i++)
-        {
-            float a = ang * Mathf.Deg2Rad;
-            float x = center1.x + radius * Mathf.Cos(a);
-            float y = center1.y + radius * Mathf.Sin(a);
 
-            points.Add(new Vector2(x, y));
-            ang += 360f/smoothness;
-        }
 
-        ang -= 360f / smoothness;
 
+        ang = 360f - rotation;
+        ang %= 360;
 
-        for (int i = smoothness/2; i <= smoothness; i++)
+        // top semi circle
+        for (int i = 0; i <= smoothness; i++)
         {
-            float a = ang * Mathf.Deg2Rad;
-            float x = center2.x + radius * Mathf.Cos(a);
-            float y = center2.y + radius * Mathf.Sin(a);
+            if (bullet && flip)
+            {
+                calcPointLocation(radius, center1);
+                ang += 180f;
+                calcPointLocation(radius, center1);
+                i = smoothness + 1;
+            }
+            else
+            {
+                calcPointLocation(radius, center1);
+                ang += 180f / smoothness;
+            }
+        }
+
+        ang -= 180f / smoothness;
+        ang %= 360;
 
-            points.Add(new Vector2(x, y));
-            ang += 360f / smoothness;
+        // bottom semi circle
+        for (int i = 0; i <= smoothness; i++)
+        {
+            if (bullet && !flip)
+            {
+                calcPointLocation(radius, center2);
+                ang += 180f;
+                calcPointLocation(radius, center2);
+                i = smoothness + 1;
+            }
+            else
+            {
+                calcPointLocation(radius, center2);
+                ang += 180f / smoothness;
+            }
         }
 
         points.Add(points[0]);
-
         return points.ToArray();
     }
+
+    void calcPointLocation(float r, Vector2 centerPt)
+    {
+        float a = ang * Mathf.Deg2Rad;
+        float x = centerPt.x + r * Mathf.Cos(a);
+        float y = centerPt.y + r * Mathf.Sin(a);
+
+        points.Add(new Vector2(x, y));
+    }
 }
 #endif

Custom 2D Colliders/Scripts/Editor/CapsuleCollider2D_Editor.cs

@@ -35,6 +35,7 @@ public class CapsuleCollider_Editor : Editor {
     CapsuleCollider2D capCol;
     EdgeCollider2D edgeCollider;
     Vector2 off;
+    bool advanced;
 
     void OnEnable()
     {
@@ -55,6 +56,12 @@ public override void OnInspectorGUI()
         DrawDefaultInspector();
 
         capCol.radius = Mathf.Clamp(capCol.radius, 0.5f, capCol.height / 2);
+        capCol.radius = EditorGUILayout.Slider("Radius", capCol.radius, 0.25f, capCol.height / 2f);
+
+        GUILayout.Space(8);
+        capCol.bullet = EditorGUILayout.Toggle("Bullet", capCol.bullet);
+        if(capCol.bullet) capCol.flip = EditorGUILayout.Toggle("Flip", capCol.flip);
+
 
         if (GUI.changed || !off.Equals(edgeCollider.offset))
         {