Got the minigame menu up, running and documented. Also split up the game file

rooster.c

@@ -4,9 +4,6 @@
 #include <string.h>
 #include <stdio.h>
 
-
-// TODO: End the eternal NULL checks.
-
 /*
  * The rooster type this program is build around.
  */
@@ -17,14 +14,12 @@ typedef struct rooster_data {
     toestand state;
 } rooster;
 
-
 rooster *rooster_maak(const char* input) {
     int width = 0;
     int height = 0;
     const size_t len = strlen(input) / sizeof(char);
     if (input == NULL || len == 0) {
-        perror("rooster_maak");
-        exit(1);
+        return NULL;
     }
 
     for (int i = 0; input[i] != '\n'; i++) {
@@ -35,14 +30,18 @@ rooster *rooster_maak(const char* input) {
 
     for (int i = 0; i < height; i = i + width + 1) {
         if ((int)strcspn(&input[i], "\n") != width) {
-            perror("rooster_maak");
-            exit(1);
-        };
+            return NULL;
+        }
     }
 
     const int grid_size = (width + 1) * height + 1;
 
     rooster *rp = malloc(sizeof(rooster));
+
+    if (rp == NULL) {
+        return NULL;
+    }
+
     rp->rost = malloc(grid_size * sizeof(char));
     rp->height = height;
     rp->width = width;
@@ -68,10 +67,6 @@ rooster *rooster_maak(const char* input) {
  * 0 otherwise
  */
 static int get_grid_sizes(FILE *fh, rooster *rost) {
-    if (fh == NULL) {
-        return 0;
-    }
-
     while (getc(fh) != '\n') {
         if (feof(fh)) {
             return 0;
@@ -242,18 +237,6 @@ int rooster_plaats(rooster *rp, int x, int y, char c) {
     return 0;
 }
 
-char *rooster_als_string(const rooster *rp) {
-	if (rp != NULL && rp->rost != NULL) {
-		char *string = malloc(sizeof(rp->rost));
-        if (string == NULL) {
-            return NULL;
-        }
-        memcpy(string, rp->rost, sizeof(rp->rost));
-        return string;
-	}
-    return NULL;
-}
-
 char *rooster_vraag_rij(const rooster *rp, int y) {
 	if (rp != NULL && rp->rost != NULL && rooster_bevat(rp, 0, y) == 1) {
 	    // we're going to remove the newline so this is long enough