Select and place piece

3 files changed, 103 insertions, 20 deletions

diff --git a/sirtet.c b/sirtet.c
index 204dae7..4347fc3 100644
--- a/sirtet.c
+++ b/sirtet.c
@@ -111,23 +111,94 @@ void sirtet() {
     // initialize ncurses
     setlocale(LC_ALL, "");
     initscr();
+    clear();
     noecho();
+    cbreak();
     keypad(stdscr, true);
     curs_set(0); // set cursor invisible
-    printrect(0, 0, H, W);
+    start_color();
+    init_pair(1, COLOR_GREEN, COLOR_BLACK);
+    init_pair(2, COLOR_RED, COLOR_BLACK);
 
     // begin game loop
     while (!over) {
+        clear();
+        printrect(0, 0, H, W);
         printmap(map, 1, 1, H, W);
-        printpieces(hand, H + 2, 0, P);
-        // await user input
+
+        // select piece
+        bool piece_confirmed = false;
         int pc_idx;
-        int row;
-        int col;
-        refresh();
-        while(1);
-        place(map, hand[pc_idx], row, col);
-        freepiece(hand[pc_idx]);
+        for (int i = 0; i < P; i++) {
+            if (hand[i] != NULL) {
+                pc_idx = i;
+                break;
+            }
+        }
+
+        while (!piece_confirmed) {
+            printpieces(hand, H + 2, 0, P, pc_idx);
+            refresh();
+            // await user input
+            int ch = getch();
+            switch (ch) {
+                case 10: // enter
+                    piece_confirmed = true;
+                    break;
+                case KEY_LEFT:
+                    for (int i = 0; i < P; i++) {
+                        // find previous non-null piece
+                        pc_idx = (pc_idx + P - 1) % P;
+                        if (hand[pc_idx] != NULL)
+                            break;
+                    }
+                    break;
+                case KEY_RIGHT:
+                    for (int i = 0; i < P; i++) {
+                        // find next non-null piece
+                        pc_idx = (pc_idx + 1) % P;
+                        if (hand[pc_idx] != NULL)
+                            break;
+                    }
+                    break;
+            }
+        }
+
+        struct piece* pc = hand[pc_idx];
+
+        // select position
+        bool pos_confirmed = false;
+        int row = 0;
+        int col = 0;
+        while (!pos_confirmed) {
+            printmap(map, 1, 1, H, W);
+
+            bool pos_placeable = placeable(map, pc, row, col, H, W);
+            printpiece(pc, row + 1, col * 2 + 1, (pos_placeable ? 1 : 2));
+
+            int ch = getch();
+            switch (ch) {
+                case 10: // enter
+                    if (pos_placeable)
+                        pos_confirmed = true;
+                    break;
+                case KEY_LEFT:
+                    if (col > 0) col--;
+                    break;
+                case KEY_RIGHT:
+                    if (col + pc->w < W) col++;
+                    break;
+                case KEY_UP:
+                    if (row > 0) row--;
+                    break;
+                case KEY_DOWN:
+                    if (row + pc->h < H) row++;
+                    break;
+            }
+        }
+
+        place(map, pc, row, col);
+        freepiece(pc);
         hand[pc_idx] = NULL;
 
         // clear full rows and columns
diff --git a/ui.c b/ui.c
index b6d38be..8693119 100644
--- a/ui.c
+++ b/ui.c
@@ -29,31 +29,42 @@ void printmap(char** map, int y, int x, int mapH, int mapW) {
     for (int r = 0; r < mapH; r++) {
         for (int c = 0; c < mapW; c++) {
             if (map[r][c] == '+') {
-                mvaddch(y + r + 1, x + 2 * c + 1, (' ' | A_REVERSE));
+                mvaddch(y + r, x + 2 * c, (' ' | A_REVERSE));
                 addch(' ' | A_REVERSE);
+            } else {
+                mvaddch(y + r, x + 2 * c, (' '));
+                addch(' ');
             }
         }
     }
     refresh();
 }
 
-void printpieces(struct piece** hand, int y, int x, int nhand) {
+void printpiece(struct piece* pc, int y, int x, int color_pair) {
+    attron(COLOR_PAIR(color_pair));
+    for (int r = 0; r < pc->h; r++) {
+        for (int c = 0; c < pc->w; c++) {
+            if (pc->blocks[r * pc->w + c] == '+') {
+                mvaddch(y + r, x + 2 * c, (' ' | A_REVERSE));
+                addch(' ' | A_REVERSE);
+            }
+        }
+    }
+    attroff(COLOR_PAIR(color_pair));
+}
+
+void printpieces(struct piece** hand, int y, int x, int nhand, int highlight) {
     for (int i = 0; i < nhand; i++) {
         if (hand[i] == NULL)
             continue;
 
         struct piece* pc = hand[i];
         move(y, x);
+
         printw("%d", i);
         printrect(y + 1, x, pc->h + 2, pc->w + 2);
-        for (int r = 0; r < pc->h; r++) {
-            for (int c = 0; c < pc->w; c++) {
-                if (pc->blocks[r * pc->w + c] == '+') {
-                    mvaddch(y + r + 3, x + 2 * c + 3, (' '| A_REVERSE));
-                    addch(' ' | A_REVERSE);
-                }
-            }
-        }
+        printpiece(pc, y + 3, x + 3, (i == highlight ? 1 : 0));
+
         x += 2 * pc->w + 8;
     }
     refresh();
diff --git a/ui.h b/ui.h
index 37df329..09bed98 100644
--- a/ui.h
+++ b/ui.h
@@ -2,6 +2,7 @@
 #define UI_H
 void printrect(int y, int x, int h, int w);
 void printmap(char** map, int y, int x, int mapH, int mapW);
-void printpieces(struct piece** hand, int y, int x, int nhand);
+void printpiece(struct piece* pc, int y, int x, int color_pair);
+void printpieces(struct piece** hand, int y, int x, int nhand, int highlight);
 #endif