From 8ad2e994e7ebba5f275b8d258da2fb4f2572f3eb Mon Sep 17 00:00:00 2001
From: Noah Swerhun <noah@noahsw.xyz>
Date: Fri, 17 Sep 2021 22:35:02 -0500
Subject: [PATCH] movement completed

---
 Makefile            |   4 ++--
 config.h            |  20 ++++++++++++++++
 nsnake              | Bin 0 -> 17584 bytes
 obj/apple.o         | Bin 0 -> 1848 bytes
 obj/main.o          | Bin 0 -> 4368 bytes
 obj/segment.o       | Bin 0 -> 2168 bytes
 obj/snake.o         | Bin 0 -> 3616 bytes
 src/apple.c         |  20 ++++++++++++++++
 src/include/apple.h |  12 ++++++++++
 src/include/snake.h |  10 ++++----
 src/main.c          |  41 ++++++++++++++++++++++++++++++++-
 src/segment.c       |   3 ++-
 src/snake.c         |  55 ++++++++++++++++++++++++++++++++++++--------
 13 files changed, 147 insertions(+), 18 deletions(-)
 create mode 100644 config.h
 create mode 100755 nsnake
 create mode 100644 obj/apple.o
 create mode 100644 obj/main.o
 create mode 100644 obj/segment.o
 create mode 100644 obj/snake.o

diff --git a/Makefile b/Makefile
index 34d9f88..4df41cb 100644
--- a/Makefile
+++ b/Makefile
@@ -11,10 +11,10 @@ INC = $(wildcard $(INCDIR)/*.h)
 _OBJ = $(SRC:.c=.o)
 OBJ = $(subst $(SRCDIR),$(OBJDIR),$(_OBJ))
 
-$(OUTFILE): $(OBJ)
+$(OUTFILE): $(OBJ) config.h
 	$(CC) $(CFLAGS) -o $(OUTFILE) $(OBJ)
 
-$(OBJDIR)/%.o: $(SRCDIR)/%.c $(INCDIR)/%.h
+$(OBJDIR)/%.o: $(SRCDIR)/%.c $(INCDIR)/%.h config.h
 	@mkdir -p $(@D)
 	$(CC) $(CFLAGS) -o $@ -c $<
 
diff --git a/config.h b/config.h
new file mode 100644
index 0000000..6b50bd0
--- /dev/null
+++ b/config.h
@@ -0,0 +1,20 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+// Keybinds
+#define    up_key 'k'
+#define  down_key 'j'
+#define right_key 'l'
+#define  left_key 'h'
+#define  quit_key 'q'
+
+// The starting legnth of the snake
+static const size_t starting_len = 15;
+
+// Speed of snake (milliseconds between moves)
+static const int screen_speed = 150;
+
+// Character for each snake segment
+static const char snake_ch = '#';
+
+#endif
diff --git a/nsnake b/nsnake
new file mode 100755
index 0000000000000000000000000000000000000000..a7ff1bf2687ec2b7c2466ce77d4be3bbeed15ac3
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diff --git a/obj/main.o b/obj/main.o
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diff --git a/obj/segment.o b/obj/segment.o
new file mode 100644
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GIT binary patch
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HcmV?d00001

diff --git a/obj/snake.o b/obj/snake.o
new file mode 100644
index 0000000000000000000000000000000000000000..0cb51d435a01356ed6328a081c07ca4064e70540
GIT binary patch
literal 3616
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literal 0
HcmV?d00001

diff --git a/src/apple.c b/src/apple.c
index e69de29..ae5951e 100644
--- a/src/apple.c
+++ b/src/apple.c
@@ -0,0 +1,20 @@
+#include <stdlib.h>
+
+#include "include/main.h"
+#include "include/apple.h"
+
+Apple *new_apple(int x, int y) {
+    Apple *a;
+    a = (Apple *)malloc(sizeof(Apple));
+    if (!a)
+        die("apple.c: new_apple(): 'a' is null pointer");
+
+    a->x = x;
+    a->y = y;
+
+    return a;
+}
+
+void delete_apple(Apple *a) {
+    free_s(a);
+}
diff --git a/src/include/apple.h b/src/include/apple.h
index e69de29..d1333a5 100644
--- a/src/include/apple.h
+++ b/src/include/apple.h
@@ -0,0 +1,12 @@
+#ifndef APPLE_H
+#define APPLE_H
+
+typedef struct apple_T {
+    int x;
+    int y;
+} Apple;
+
+Apple *new_apple(int, int);
+void delete_apple(Apple *);
+
+#endif
diff --git a/src/include/snake.h b/src/include/snake.h
index 85100a6..0fee9d6 100644
--- a/src/include/snake.h
+++ b/src/include/snake.h
@@ -1,6 +1,8 @@
 #ifndef SNAKE_H
 #define SNAKE_H
 
+#include "segment.h"
+
 enum dirn {
     UP = 0,
     DOWN,
@@ -9,15 +11,15 @@ enum dirn {
 };
 
 typedef struct snake_T {
-    Segments **n;
+    Segment **n;
     size_t len;
-    int head_dirn;
 } Snake;
 
-Snake *new_snake(size_t, int, int, int);
-void *delete_snake(Snake *);
+Snake *new_snake(size_t, int, int);
+void delete_snake(Snake *);
 
 void snake_forward(Snake *, int);
+void snake_print(Snake *);
 int snake_eat(Snake *);
 
 #endif
diff --git a/src/main.c b/src/main.c
index 0fb6ee0..4473b48 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,8 +1,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <ncurses.h>
 
 #include "include/main.h"
+#include "include/snake.h"
+#include "../config.h"
 
 void die(char *fmt, ...) {
     va_list args;
@@ -12,7 +15,7 @@ void die(char *fmt, ...) {
     vfprintf(stderr, fmt, args);
     fprintf(stderr, "\n");
 
-    va_end(args)
+    va_end(args);
     exit(1);
 }
 
@@ -20,3 +23,39 @@ void free_s(void *p) {
     free(p);
     p = NULL;
 }
+
+int main(void) {
+    int c, dirn;
+    Snake *s;
+
+    // init ncurses
+    initscr();
+    keypad(stdscr, true);
+    noecho();
+    cbreak();
+    nodelay(stdscr, true);
+    curs_set(0);
+
+    s = new_snake(starting_len, getmaxx(stdscr) / 2, getmaxy(stdscr) / 2);
+    dirn = UP;
+
+    while ((c = getch())) {
+        switch (c) {
+            case    up_key: dirn = UP;    break;
+            case  down_key: dirn = DOWN;  break;
+            case right_key: dirn = RIGHT; break;
+            case  left_key: dirn = LEFT;  break;
+            case  quit_key: goto quit;
+        }
+        snake_forward(s, dirn);
+        clear();
+        refresh();
+        snake_print(s);
+        refresh();
+        napms(screen_speed);
+    } 
+
+quit:
+    delete_snake(s);
+    endwin();
+}
diff --git a/src/segment.c b/src/segment.c
index 366bcc0..2b6b857 100644
--- a/src/segment.c
+++ b/src/segment.c
@@ -1,10 +1,11 @@
 #include <stdlib.h>
+#include <stdio.h>
 
 #include "include/main.h"
 #include "include/segment.h"
 
 Segment *new_segment(int x, int y) {
-    Segment c;
+    Segment *c;
     c = (Segment *)malloc(sizeof(Segment));
     if (!c)
         die("segment.c: new_segment(): 'c' is null pointer");
diff --git a/src/snake.c b/src/snake.c
index 8084b61..ad7c5f5 100644
--- a/src/snake.c
+++ b/src/snake.c
@@ -1,23 +1,58 @@
 #include <stdlib.h>
+#include <ncurses.h>
 
 #include "include/main.h"
 #include "include/segment.h"
 #include "include/snake.h"
+#include "../config.h"
 
-Snake *new_snake(size_t len, int head_dirn, int x, int y) {
+Snake *new_snake(size_t len, int x, int y) {
     Snake *s;
-    s = (Snake *)malloc(sizeof(Snake));
-    if (!s)
+    s = (Snake *)malloc(sizeof(Snake)); if (!s)
         die("snake.c: new_snake(): 's' is null pointer");
 
-    s->n = (Segment **)malloc(sizeof(Segment *) * len);
+    s->len = len;
+    s->n = (Segment **)malloc(sizeof(Segment *) * s->len);
     if (!s->n)
         die("snake.c: new_snake(): 's->n' is null pointer");
-    for (size_t i = 0; i < len; i++) {
-        s->*n[i] = new_segment(x, y--);
-    }
-}
-void *delete_snake(Snake *);
+    for (size_t i = 0; i < s->len; i++)
+        s->n[i] = new_segment(x, y--);
+
+    return s;
+}
+
+void delete_snake(Snake *s) {
+    for (size_t i = 0; i < s->len; i++)
+        delete_segment(s->n[i]);
+    free_s(s);
+}
+
+void snake_forward(Snake *s , int dirn) {
+    if (!s)
+        die("snake.c: snake_forward(): 's' is null pointer");
+    switch (dirn) {
+        case UP:
+            segment_move(s->n[0], s->n[0]->x, s->n[0]->y - 1);
+        break;
+        case DOWN:
+            segment_move(s->n[0], s->n[0]->x, s->n[0]->y + 1);
+        break;
+        case RIGHT:
+            segment_move(s->n[0], s->n[0]->x + 1, s->n[0]->y);
+        break;
+        case LEFT:
+            segment_move(s->n[0], s->n[0]->x - 1, s->n[0]->y);
+        break;
+    }
+    for (size_t i = 1; i < s->len; i++)
+        segment_move(s->n[i], s->n[i - 1]->prev_x,
+                              s->n[i - 1]->prev_y);
+    
+}
+
+void snake_print(Snake *s) {
+    for (size_t i = 0; i < s->len; i++)
+        mvaddch(s->n[i]->y, s->n[i]->x, snake_ch);
+}
 
-void snake_forward(Snake *, int);
 int snake_eat(Snake *);