From d94bf01fdd4b8e9f307463ea04454c8db4824859 Mon Sep 17 00:00:00 2001
From: Frederick Yin <fkfd@fkfd.me>
Date: Wed, 1 Jun 2022 10:00:50 +0800
Subject: Select and place piece

---
 sirtet.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 80 insertions(+), 9 deletions(-)

(limited to 'sirtet.c')

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
-- 
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