Mario: add basic big mario logic

mario/visitors/goomba_visitor.cpp

@@ -2,6 +2,7 @@
 #include "../../sdlpp/sdlpp_renderobject.hpp"
 #include "../objectids.hpp"
 #include "../sprites.hpp"
+#include "../mario.hpp"
 
 void GoombaVisitor::visit(const SDLPP::RenderObject &obj) {
     auto id = obj.getId();
@@ -49,8 +50,11 @@ void GoombaVisitor::visit(const SDLPP::RenderObject &obj) {
         death = true;
         break;
     case MARIO_ID:
-        if (from == NPC_TOP_DETECT) {
-            death = true;
+        {
+            auto &mario = dynamic_cast<const Mario &>(obj);
+            if (from == NPC_TOP_DETECT && obj.getPos().getY() <= goomba_pos.getY() - BLOCK_SIZE && !mario.isJumping()) {
+                death = true;
+            }
         }
         break;
     default: