Optimize terminal usage

The ^C-catching stuff will not work on windows; need to look into that

1 files changed, 19 insertions, 5 deletions

diff --git a/world.cpp b/world.cpp
index b74e7cb..0af24a2 100644
--- a/world.cpp
+++ b/world.cpp
@@ -316,14 +316,28 @@ Robot* World::targetbot(const Robot *r){
 	return *targetbotptr(r);
 }
 
-void World::print() const {
+void World::print(ostream &os) const {
 	for(int y=0;y<SIZE;y++){
 		for(int x=0;x<SIZE;x++){
-			if(board[y][x]==nullptr)cout<<"..";
-			else cout<<string(2,"^>v<"[board[y][x]->heading%4]);
-			cout<<' ';
+			if(board[y][x]==nullptr)os<<"..";
+			else os<<string(2,"^>v<"[board[y][x]->heading%4]);
+			os<<' ';
+		}
+		os<<endl;
+	}
+}
+
+void World::print(ScreenBuffer &sb) const {
+	for(int y=0;y<SIZE;y++){
+		sb.moveto(0,y);
+		for(int x=0;x<SIZE;x++){
+			if(board[y][x]==nullptr)sb.printf("..");
+			else {
+				char c="^>v<"[board[y][x]->heading%4];
+				sb.printf("%c%c",c,c);
+			}
+			sb.printf(" ");
 		}
-		cout<<endl;
 	}
 }