Circulate pieces at hand, game over calculation

1 files changed, 46 insertions, 8 deletions

diff --git a/sirtet.c b/sirtet.c
index 94ca5a1..b09c316 100644
--- a/sirtet.c
+++ b/sirtet.c
@@ -26,6 +26,9 @@ void printmap(char** map, int nrow, int ncol) {
 
 void printpieces(struct piece** hand, int nhand) {
     for (int i = 0; i < nhand; i++) {
+        if (hand[i] == NULL)
+            continue;
+
         printf("Piece %d\n", i);
         struct piece* pc = hand[i];
         for (int r = 0; r < pc->h; r++) {
@@ -71,11 +74,9 @@ void place(char** map, struct piece* pc, int row, int col) {
     }
 }
 
-void freepieces(struct piece** hand, int nhand) {
-    for (int i = 0; i < nhand; i++) {
-        free(hand[i]->blocks);
-        free(hand[i]);
-    }
+void freepiece(struct piece* pc) {
+    free(pc->blocks);
+    free(pc);
 }
 
 void refillpieces(struct piece** hand, int nhand) {
@@ -97,7 +98,6 @@ void sirtet() {
         map[r] = malloc(W * sizeof(char));
     }
     struct piece** hand = malloc(P * sizeof(struct piece*));
-    int pieces_left = P;
     srand(time(NULL));
     clearmap(map, H, W);
 
@@ -114,19 +114,57 @@ void sirtet() {
         int col;
         printf("Input [piece #] [row #] [col #]: ");
         scanf("%d %d %d", &pc_idx, &row, &col);
-        while (pc_idx < 0 || pc_idx >= P || !placeable(map, hand[pc_idx], row, col, H, W)) {
+        while (
+            pc_idx < 0 || pc_idx >= P || hand[pc_idx] == NULL ||
+            !placeable(map, hand[pc_idx], row, col, H, W)
+        ) {
             printf("You cannot do that. Try again: ");
             scanf("%d %d %d", &pc_idx, &row, &col);
         }
         place(map, hand[pc_idx], row, col);
+        freepiece(hand[pc_idx]);
+        hand[pc_idx] = NULL;
+
+        // if player has no piece left, refill
+        bool pieces_left = false;
+        for (int i = 0; i < P; i++) {
+            if (hand[i] != NULL) {
+                pieces_left = true;
+                break;
+            }
+        }
+        if (!pieces_left)
+            refillpieces(hand, P);
+
+        // game over if none of the pieces are placeable
+        bool has_placeable = false;
+        for (int i = 0; i < P; i++) {
+            if (hand[i] == NULL)
+                continue;
+
+            for (int r = 0; r <= H - hand[i]->h; r++) {
+                for (int c = 0; c <= W - hand[i]->w; c++) {
+                    if (placeable(map, hand[i], r, c, H, W))
+                        has_placeable = true;
+                }
+            }
+        }
+        if (!has_placeable) {
+            // game over
+            printf("Game over\n");
+            over = true;
+        }
     }
 
     // free memory
-    freepieces(hand, P);
     for (int r = 0; r < H; r++) {
         free(map[r]);
     }
     free(map);
+    for (int i = 0; i < P; i++) {
+        if (hand[i] != NULL)
+            freepiece(hand[i]);
+    }
     free(hand);
 }