Rename plugins to external

applications/external/game_2048/array_utils.c

@@ -0,0 +1,40 @@
+#include "array_utils.h"
+
+void reverse_array(int length, uint8_t arr[length]) {
+    uint8_t tmp;
+    for(int low = 0, high = length - 1; low < high; low++, high--) {
+        tmp = arr[low];
+        arr[low] = arr[high];
+        arr[high] = tmp;
+    }
+}
+
+bool shift_array_to_left(int length, uint8_t arr[length], uint8_t from_index, uint8_t offset) {
+    if(from_index >= length) return false;
+    for(uint8_t i = from_index; i < length; i++) {
+        arr[i] = i < length - offset ? arr[i + offset] : 0;
+    }
+    return true;
+}
+
+void get_column_from_array(
+    int rows,
+    int cols,
+    uint8_t arr[rows][cols],
+    uint8_t column_index,
+    uint8_t* out) {
+    for(uint8_t i = 0; i < rows; i++) {
+        out[i] = arr[i][column_index];
+    }
+}
+
+void set_column_to_array(
+    int rows,
+    int cols,
+    uint8_t arr[rows][cols],
+    uint8_t column_index,
+    uint8_t* src) {
+    for(uint8_t i = 0; i < rows; i++) {
+        arr[i][column_index] = src[i];
+    }
+}