Add input function

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)

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__ */

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();
+    }
+}