From af57eab9d66875554fdf4459f344d3e653efcdb3 Mon Sep 17 00:00:00 2001
From: David Moeller <david.moeller@informatik.hs-fulda.de>
Date: Tue, 23 Jan 2024 12:53:46 +0100
Subject: [PATCH] added get_Chara

---
 src/main/c/Snake/get_character.c | 59 ++++++++++++++++++++++++++++++++
 src/main/c/Snake/get_character.h |  6 ++++
 src/main/c/Snake/snake_start.c   | 54 +++++++++++++++++++++++++++++
 test/Snake/test_part_of_snake.c  | 13 +++++++
 4 files changed, 132 insertions(+)
 create mode 100644 src/main/c/Snake/get_character.c
 create mode 100644 src/main/c/Snake/get_character.h

diff --git a/src/main/c/Snake/get_character.c b/src/main/c/Snake/get_character.c
new file mode 100644
index 0000000..a800c01
--- /dev/null
+++ b/src/main/c/Snake/get_character.c
@@ -0,0 +1,59 @@
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/select.h>
+#include <termios.h>
+#include <stdio.h>
+#include <time.h>
+
+struct termios orig_termios;
+
+void reset_terminal_mode(){
+    tcsetattr(0, TCSANOW, &orig_termios);
+}
+
+void set_conio_terminal_mode(){
+    struct termios new_termios;
+
+    /* take two copies - one for now, one for later */
+    tcgetattr(0, &orig_termios);
+    memcpy(&new_termios, &orig_termios, sizeof(new_termios));
+
+    /* register cleanup handler, and set the new terminal mode */
+    atexit(reset_terminal_mode);
+    cfmakeraw(&new_termios);
+    tcsetattr(0, TCSANOW, &new_termios);
+}
+
+int kbhit(){
+    struct timeval tv = { 0L, 0L };
+    fd_set fds;
+    FD_ZERO(&fds);
+    FD_SET(0, &fds);
+    return select(1, &fds, NULL, NULL, &tv) > 0;
+}
+
+int getch(){
+    int r;
+    unsigned char c;
+    if ((r = read(0, &c, sizeof(c))) < 0) {
+        return r;
+    } else {
+        return c;
+    }
+}
+
+char get_character(double limit){
+    set_conio_terminal_mode();
+
+    clock_t t = clock();
+    char c = 0;
+
+    while ((double)(clock() - t) / CLOCKS_PER_SEC < limit){
+        if(kbhit()){c = getch();}
+    }
+    
+    reset_terminal_mode();
+
+    return c;
+}
\ No newline at end of file
diff --git a/src/main/c/Snake/get_character.h b/src/main/c/Snake/get_character.h
new file mode 100644
index 0000000..a955266
--- /dev/null
+++ b/src/main/c/Snake/get_character.h
@@ -0,0 +1,6 @@
+#ifndef GET_CHARACTER_H
+#define GET_CHARACTER_H
+
+char get_character(double limit);
+
+#endif // GET_CHARACTER_H
\ No newline at end of file
diff --git a/src/main/c/Snake/snake_start.c b/src/main/c/Snake/snake_start.c
index 86f0204..18d92e8 100644
--- a/src/main/c/Snake/snake_start.c
+++ b/src/main/c/Snake/snake_start.c
@@ -1,11 +1,18 @@
 #include <stdio.h>
 #include <stdbool.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdlib.h>
 #include "snake_start.h"
+#include "get_character.h"
+#define TIME_TURN 0.5;
 
 
 void main_menu();
 void game();
 Snake initialize_snake();
+int *get_next_move(double limit);
+void move_snake(Snake *snake);
 void draw(Snake *snake);
 int part_of_snake(Snake *snake, unsigned char tile);
 
@@ -47,13 +54,23 @@ void main_menu(){
 void game(){
     Snake snake = initialize_snake();
     bool running = true;
+    clock_t t = clock();
+
     while (running)
     {
         system("clear");
+        
+        t = clock() - t;
+        int *mv = get_next_move((double)t / CLOCKS_PER_SEC);
+        t = clock();
+
+        move_snake(&snake);
         draw(&snake);
         running = false;
+
     }
     getchar();
+    getchar();
 }
 
 Snake initialize_snake(){
@@ -67,6 +84,43 @@ Snake initialize_snake(){
     return snake;
 }
 
+int *get_next_move(double limit){
+    limit = TIME_TURN - limit;
+    int *ptr = (int*) malloc(2 * sizeof(int));
+    clock_t t = clock();
+    char c;
+
+    c = get_character(limit);
+    
+    switch (c){
+        case 'w':
+        case 'A':
+            printf("Hoch\n");
+            break;
+        case 'a':
+        case 'D':
+            printf("Links\n");
+            break;
+        case 's':
+        case 'B':
+            printf("Runter\n");
+            break;
+        case 'd':
+        case 'C':
+            printf("Rechts\n");
+            break;
+        
+        default:
+            break;
+    }
+
+    return ptr;
+}
+
+void move_snake(Snake *snake){
+    
+}
+
 void draw(Snake *snake){
     printf("+");
     for(int i = 0; i < WIDTH; i++){printf("-");}
diff --git a/test/Snake/test_part_of_snake.c b/test/Snake/test_part_of_snake.c
index 5dfad8b..fcc45e9 100644
--- a/test/Snake/test_part_of_snake.c
+++ b/test/Snake/test_part_of_snake.c
@@ -35,4 +35,17 @@ void test_get_correct_index(void){
     TEST_ASSERT_EQUAL_INT(2, result);//2. part ist at 6/8
 }
 
+
+void test_snake_not_on_tile(void){
+    /* arrange */
+    int result;
+    Snake snake = initialize_snake();
+
+    /* act */
+    result = part_of_snake(&snake, 6 * 16 + 6);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(-1, result);//-1 snake is not on 6/6
+}
+
 #endif // TEST
\ No newline at end of file