From 9dc2da1f901c68ed5d631e1890e0e9e9e730d54f Mon Sep 17 00:00:00 2001
From: Nakidai <alex_platonov1@mail.ru>
Date: Sun, 29 Oct 2023 21:31:33 +0300
Subject: [PATCH] Add input function

---
 Makefile        |  2 +-
 include/input.h | 14 ++++++++++++++
 src/input.c     | 33 +++++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+), 1 deletion(-)
 create mode 100644 include/input.h
 create mode 100644 src/input.c

diff --git a/Makefile b/Makefile
index 65dc3a9..2163dbc 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ LD  = ld
 RM  = rm -f
 SRCDIR = src
 OBJDIR = obj
-SRC = main.c screen.c
+SRC = main.c screen.c input.c
 OBJ = $(addprefix $(OBJDIR)/,$(SRC:.c=.o))
 
 default: $(OUT)
diff --git a/include/input.h b/include/input.h
new file mode 100644
index 0000000..2b65a7a
--- /dev/null
+++ b/include/input.h
@@ -0,0 +1,14 @@
+#ifndef __INPUT_H__
+#define __INPUT_H__
+
+#include <stdbool.h>
+
+typedef struct input_args_t
+{
+    char *out;
+    bool *alive;
+} inputArgs;
+
+void input(void *vargp);
+
+#endif /* __INPUT_H__ */
diff --git a/src/input.c b/src/input.c
new file mode 100644
index 0000000..8d4f8a7
--- /dev/null
+++ b/src/input.c
@@ -0,0 +1,33 @@
+#include "input.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <termios.h>
+
+char getch(void)
+{
+    char buf = 0;
+    struct termios old = { 0 };
+    fflush(stdout);
+    if (tcgetattr(0, &old) < 0) perror("tcsetattr()");
+    old.c_lflag    &= ~ICANON;   // local modes = Non Canonical mode
+    old.c_lflag    &= ~ECHO;     // local modes = Disable echo. 
+    old.c_cc[VMIN]  = 1;         // control chars (MIN value) = 1
+    old.c_cc[VTIME] = 0;         // control chars (TIME value) = 0 (No time)
+    if (tcsetattr(0, TCSANOW, &old) < 0) perror("tcsetattr ICANON");
+    if (read(0, &buf, 1) < 0) perror("read()");
+    old.c_lflag    |= ICANON;    // local modes = Canonical mode
+    old.c_lflag    |= ECHO;      // local modes = Enable echo. 
+    if (tcsetattr(0, TCSADRAIN, &old) < 0) perror ("tcsetattr ~ICANON");
+    return buf;
+}
+
+void input(void *vargp)
+{
+    char *out = ((inputArgs *)vargp)->out;
+    bool *alive = ((inputArgs *)vargp)->alive;
+
+    while (*alive)
+    {
+        *out = getch();
+    }
+}