fruit: fixed bug where fruit could generate under tail

src/main.cpp

@@ -6,9 +6,10 @@
 #include "input.hpp"
 
 int main () {	
+	std::srand(std::time(0));
 	Window window;
 	Input input;
-	Fruit fruit;
+	Fruit fruit(window.m_board);
 	Body body;
 	Head head;
 	bool running = true;