From 5c43e5da6e3768b9c734fbd6a4a4b824f953d842 Mon Sep 17 00:00:00 2001
From: Frederick Yin <fkfd@fkfd.me>
Date: Mon, 6 Jun 2022 12:23:34 +0800
Subject: Implement combo

---
 sirtet.c | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/sirtet.c b/sirtet.c
index 3332aeb..79685ae 100644
--- a/sirtet.c
+++ b/sirtet.c
@@ -15,7 +15,12 @@ void clearmap(char* map, int mapH, int mapW) {
     }
 }
 
-int clearfull(char* map, int mapH, int mapW) {
+struct clearfull_data {
+    int rows;
+    int cols;
+};
+
+struct clearfull_data clearfull(char* map, int mapH, int mapW) {
     // if a row or column is full, clear it
     // if a row and a column are full at the same time, clear both
     // which is why we need to scan all rows/columns before actually clearing them
@@ -61,7 +66,7 @@ int clearfull(char* map, int mapH, int mapW) {
     }
     free(rows_to_clear);
     free(cols_to_clear);
-    return (rtc_count * mapW + ctc_count * mapH - rtc_count * ctc_count);
+    return (struct clearfull_data) {rtc_count, ctc_count};
 }
 
 void sirtet(int H, int W, int P) {
@@ -80,6 +85,8 @@ void sirtet(int H, int W, int P) {
 
     bool over = false;
     int points = 0;
+    int combo = 0;
+    int max_combo = 0;
 
     // initialize ncurses
     setlocale(LC_ALL, "");
@@ -98,10 +105,13 @@ void sirtet(int H, int W, int P) {
         clear();
         printrect(0, 0, H, W);
         printmap(map, 1, 1, H, W);
-        printhelp(3, 2 * W + 8);
+        printhelp(4, 2 * W + 8);
 
         // display game stats
         mvprintw(1, 2 * W + 8, "Points: %d", points);
+        if (combo)
+            mvprintw(2, 2 * W + 8, "Combo: %d", combo);
+
         refresh();
 
         // select piece and position
@@ -200,8 +210,15 @@ void sirtet(int H, int W, int P) {
         hand[pc_idx] = NULL;
 
         // clear full rows and columns
-        int blocks_cleared = clearfull(map, H, W);
-        points += blocks_cleared;
+        struct clearfull_data cleared = clearfull(map, H, W);
+        points += cleared.rows * W + cleared.cols * H - cleared.rows * cleared.cols;
+        if (cleared.rows || cleared.cols) {
+            combo += cleared.rows + cleared.cols;
+            if (combo > max_combo)
+                max_combo = combo;
+        } else {
+            combo = 0;
+        }
 
         // if player has no piece left, refill
         bool pieces_left = false;
@@ -230,8 +247,8 @@ void sirtet(int H, int W, int P) {
         if (!has_placeable) {
             // game over
             printmap(map, 1, 1, H, W);
-            mvprintw(7, 2 * W + 8, "Game over");
-            mvprintw(8, 2 * W + 8, "Press any key to exit");
+            mvprintw(8, 2 * W + 8, "Game over");
+            mvprintw(9, 2 * W + 8, "Press any key to exit");
             refresh();
             while (getch() == 0);
             over = true;
@@ -252,6 +269,7 @@ void sirtet(int H, int W, int P) {
     // print game stats
     printf("SIRTET\n");
     printf("You scored %d points\n", points);
+    printf("Max combo: %d\n", max_combo);
 }
 
 int main(int argc, char *argv[]) {
-- 
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