Finalize the implementation of the playable shots list displaying

[Project_algorithmic_C.git] / lib / othello.c

diff --git a/lib/othello.c b/lib/othello.c
index a66a121f2e57aa56aa8ff4c9204593abd19c60ff..1bc32e2fe1969b082424ab00bfa8af89845b10c6 100644 (file)
--- a/lib/othello.c
+++ b/lib/othello.c
@@ -82,7 +82,7 @@ void set_pawn(int y, int x, unsigned int type, unsigned int pawn_array[board_siz
     if (type > 0 && type < 3 && \
             is_valid_coordinates(y, x)) {
         pawn_array[y-1][x-1] = type;
-    }
+    } //FIXME: else case should set invalid values to permit to catch errors
 }
 
 /* reverse the pawn at (y, x) coordinates if it exists */
@@ -232,6 +232,7 @@ static bool is_legal_shot(int y, int x, unsigned int current_player, unsigned in
             return true;
         }
     }
+    return false;
 }
 
 /* play the shot if legal and flip or reverse the necessary pawns */
@@ -247,40 +248,49 @@ unsigned int valid_shot(int y, int x, unsigned int current_player, unsigned int
     }
 
     if (nb_pawns_reversed == 0) {
-        return 0;
+        return nb_pawns_reversed;
     }
 
     set_pawn(y, x, current_player, pawn_array);
     return nb_pawns_reversed;
 }
 
-struct shots_list_s build_playable_shots_list(int y, int x, unsigned int current_player, unsigned int pawn_array[board_size][board_size]) {
-
-    for (unsigned int i = 0; i <= board_size; i++) {
-        for (unsigned int j = 0; j <= board_size; j++) {
-            if (is_legal_shot(y, x, current_player, pawn_array)) {
-
-            }
-        }
+static void add_shots_list_cell(int y, int x, unsigned int type, struct shots_list_s* shots_list) {
+    struct shots_list_s* list_cell = malloc(sizeof(struct shots_list_s));
+    if (!list_cell) {
+        exit(EXIT_FAILURE);
     }
-}
-
-void create_shots_list_cell(struct shots_list_s* shots_list_cell) {
 
+    if (type > 0 && type < 5 && is_valid_coordinates(y, x)) {
+        list_cell->y = y;
+        list_cell->x = x;
+        list_cell->type = type;
+        list_add_tail(&(list_cell->list), &(shots_list->list));
+    }
 }
 
-static void set_shots_list_coordinates(int y, int x, struct shots_list_s* shots_list) {
+void free_shots_list(struct shots_list_s* shots_list) {
+    struct shots_list_s* list_counter;
 
-    if (is_valid_coordinates(y, x)) {
-        shots_list->y = y;
-        shots_list->x = x;
+    while (!list_empty(&shots_list->list)) {
+        list_counter = list_entry(shots_list->list.next, struct shots_list_s, list);
+        list_del(&list_counter->list);
+        free(list_counter);
     }
+
 }
 
-void set_shots_lists_cell(int y, int x, unsigned int type, struct shots_list_s* shots_list) {
+void build_playable_shots_list(unsigned int current_player, struct shots_list_s* shots_list, unsigned int pawn_array[board_size][board_size]) {
 
-    if (type > 0 && type < 5) {
-        set_shots_list_coordinates(y, x, shots_list);
-        shots_list->type = type;
+    for (unsigned int i = 0; i <= board_size; i++) {
+        for (unsigned int j = 0; j <= board_size; j++) {
+            if (is_legal_shot(i, j, current_player, pawn_array)) {
+                add_shots_list_cell(i, j, hint_allowed, shots_list);
+            /* FIXME: a neighbourhood detection is needed
+            } else if (is_box_type(i, j, pawn_array, empty)){
+                add_shots_list_cell(i, j, hint_forbidden, shots_list);
+            */
+            }
+        }
     }
 }