Initial commit: placing pieces

1 files changed, 136 insertions, 0 deletions

diff --git a/sirtet.c b/sirtet.c
new file mode 100644
index 0000000..94ca5a1
--- /dev/null
+++ b/sirtet.c
@@ -0,0 +1,136 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <time.h>
+#include "pieces.h"
+
+void printmap(char** map, int nrow, int ncol) {
+    printf(" ");
+    for (int c = 0; c < ncol; c++) {
+        printf("-");
+    }
+    printf("\n");
+    for (int r = 0; r < nrow; r++) {
+        printf("|");
+        for (int c = 0; c < ncol; c++) {
+            printf("%c", map[r][c]);
+        }
+        printf("|\n");
+    }
+    printf(" ");
+    for (int c = 0; c < ncol; c++) {
+        printf("-");
+    }
+    printf("\n");
+}
+
+void printpieces(struct piece** hand, int nhand) {
+    for (int i = 0; i < nhand; i++) {
+        printf("Piece %d\n", i);
+        struct piece* pc = hand[i];
+        for (int r = 0; r < pc->h; r++) {
+            for (int c = 0; c < pc->w; c++) {
+                printf("%c", pc->blocks[r * pc->w + c]);
+            }
+            printf("\n");
+        }
+        printf("\n");
+    }
+}
+
+void clearmap(char** map, int nrow, int ncol) {
+    for (int r = 0; r < nrow; r++) {
+        for (int c = 0; c < ncol; c++) {
+            map[r][c] = ' ';
+        }
+    }
+}
+
+bool placeable(char** map, struct piece* pc, int row, int col, int mapH, int mapW) {
+    // boundary check
+    if (row < 0 || row + (pc->h) > mapH || col < 0 || col + (pc->w) > mapW)
+        return false;
+
+    // check if blocks to be taken by `pc` are vacant
+    for (int r = 0; r < pc->h; r++) {
+        for (int c = 0; c < pc->w; c++) {
+            if (map[row + r][col + c] == '+' && pc->blocks[r * pc->w + c] == '+')
+                return false;
+        }
+    }
+
+    return true;
+}
+
+void place(char** map, struct piece* pc, int row, int col) {
+    for (int r = 0; r < pc->h; r++) {
+        for (int c = 0; c < pc->w; c++) {
+            if (pc->blocks[r * (pc->w) + c] == '+')
+                map[row + r][col + c] = '+';
+        }
+    }
+}
+
+void freepieces(struct piece** hand, int nhand) {
+    for (int i = 0; i < nhand; i++) {
+        free(hand[i]->blocks);
+        free(hand[i]);
+    }
+}
+
+void refillpieces(struct piece** hand, int nhand) {
+    // randomly select `no` pieces from `pool` to `hand`
+    // capacities of `hand` and `pool` are `nhand` and `npool` resp.
+    for (int i = 0; i < nhand; i++) {
+        hand[i] = randpiece();
+    }
+}
+
+void sirtet() {
+    const int H = 8; // canvas height
+    const int W = 8; // canvas width
+    const int P = 3; // maximum # of pieces at hand
+
+    // init memory and game state
+    char** map = malloc(H * sizeof(char*));
+    for (int r = 0; r < H; r++) {
+        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);
+
+    bool over = false;
+    refillpieces(hand, P);
+
+    // begin game loop
+    while (!over) {
+        printmap(map, H, W);
+        printpieces(hand, P);
+        // await user input
+        int pc_idx;
+        int row;
+        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)) {
+            printf("You cannot do that. Try again: ");
+            scanf("%d %d %d", &pc_idx, &row, &col);
+        }
+        place(map, hand[pc_idx], row, col);
+    }
+
+    // free memory
+    freepieces(hand, P);
+    for (int r = 0; r < H; r++) {
+        free(map[r]);
+    }
+    free(map);
+    free(hand);
+}
+
+int main(int argc, char *argv[]) {
+    sirtet();
+    return 0;
+}