Update src/body.cpp

src/body.cpp

@@ -1,13 +1,20 @@
 #include "body.hpp"
 #include "calc.hpp"
 #include <cmath>
-#include <boost/multiprecision/cpp_dec_float.hpp>
+#include <ranges>
+
 
 Body::Body(const Position& X, const Velocity& V, const Mass& m, const std::string& name)
     : X(X), V(V), m(m), name(name) {
     A = Acceleration{Decimal(0), Decimal(0), Decimal(0)};
 }
 
+void addAcceleration(const Acceleration& new_A) {
+    for (auto& [new_a, cur_a]: std::views::zip(new_A, this->A)){
+        cur_a += new_a;
+    }
+}
+
 std::tuple<Position, Velocity, Mass> Body::save() const {
     return std::make_tuple(X, V, m);
 }