Add object collision classification and resolution functions

coresdk/src/coresdk/circle_geometry.cpp

@@ -192,4 +192,19 @@ namespace splashkit_lib
 
         return true;
     }
+
+    bool circle_quad_intersect(const circle &c, const quad &q)
+    {
+        vector<triangle> q_tris = triangles_from(q);
+
+        for (size_t i = 0; i < q_tris.size(); i++)
+        {
+            if (circle_triangle_intersect(c, q_tris[i]))
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
 }

coresdk/src/coresdk/circle_geometry.h

@@ -213,5 +213,13 @@ namespace splashkit_lib
      */
     bool tangent_points(const point_2d &from_pt, const circle &c, point_2d &p1, point_2d &p2);
 
+    /**
+     * Detects if a circle intersects with a quad.
+     *
+     * @param  c  The circle to test
+     * @param  q  The quad to test
+     * @return    True if the circle and quad intersect, false otherwise
+     */
+    bool circle_quad_intersect(const circle &c, const quad &q);
 }
 #endif /* circle_geometry_hpp */