From 0ab22bf684f4b30f1182eed6901bd3764e428ec7 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sun, 11 Dec 2016 13:39:58 +0100
Subject: Extract terminal functions

---
 CMakeLists.txt   |  3 +++
 life.cc          | 26 ++++----------------------
 src/util/term.cc | 30 ++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+), 22 deletions(-)
 create mode 100644 src/util/term.cc

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d517ca3..900c31f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,6 +13,9 @@ include_directories(
 add_executable(
 	life
 		life.cc
+		src/util/term.cc
+		src/util/box_indicator.cc
+		src/util/box_traverser.cc
 )
 
 target_link_libraries(
diff --git a/life.cc b/life.cc
index 847fe14..6f57c20 100644
--- a/life.cc
+++ b/life.cc
@@ -1,19 +1,7 @@
 #include <termbox.h>
 
 #include "world.h"
-
-void print_tb(
-	std::size_t   x,
-	std::size_t   y,
-	std::uint16_t fg,
-	std::uint16_t bg,
-	const std::string& text
-) {
-	for ( const char& c : text ) {
-		tb_change_cell(x, y, c, fg, bg);
-		x++;
-	}
-}
+#include "util/term.h"
 
 template<
 	std::size_t WIDTH,
@@ -38,18 +26,14 @@ void draw(
 		}
 	}
 
-	print_tb(1, 1, TB_WHITE, TB_DEFAULT, "Age:");
-	print_tb(6, 1, TB_WHITE, TB_DEFAULT, std::to_string(world.getAge()));
+	util::print_tb(1, 1, TB_WHITE, TB_DEFAULT, "Age:");
+	util::print_tb(6, 1, TB_WHITE, TB_DEFAULT, std::to_string(world.getAge()));
 
 	tb_present();
 }
 
 int main(int, char*[]) {
-	tb_init();
-
-	tb_select_output_mode(TB_OUTPUT_NORMAL);
-	tb_select_input_mode(TB_INPUT_ESC | TB_INPUT_MOUSE);
-
+	util::TermGuard    guard;
 	life::World<40,20> world;
 
 	std::size_t worldOffsetX = tb_width()  / 2 - world.width  / 2;
@@ -62,7 +46,6 @@ int main(int, char*[]) {
 		int t = tb_poll_event(&ev);
 
 		if ( t == -1 ) {
-			tb_shutdown();
 			return -1;
 		}
 
@@ -70,7 +53,6 @@ int main(int, char*[]) {
 			case TB_EVENT_KEY:
 				switch ( ev.key ) {
 					case TB_KEY_ESC:
-						tb_shutdown();
 						return 0;
 					case TB_KEY_SPACE:
 						world.tick();
diff --git a/src/util/term.cc b/src/util/term.cc
new file mode 100644
index 0000000..9e4c101
--- /dev/null
+++ b/src/util/term.cc
@@ -0,0 +1,30 @@
+#include "term.h"
+
+#include <termbox.h>
+
+namespace util {
+
+void print_tb(
+	std::size_t   x,
+	std::size_t   y,
+	std::uint16_t fg,
+	std::uint16_t bg,
+	const std::string& text
+) {
+	for ( const char& c : text ) {
+		tb_change_cell(x, y, c, fg, bg);
+		x++;
+	}
+}
+
+TermGuard::TermGuard() {
+	tb_init();
+	tb_select_output_mode(TB_OUTPUT_NORMAL);
+	tb_select_input_mode(TB_INPUT_ESC | TB_INPUT_MOUSE);
+}
+
+TermGuard::~TermGuard() {
+	tb_shutdown();
+}
+
+}
-- 
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