Implement a countdown clock in the timer

Updated the HUD to show the time.

1 files changed, 12 insertions, 1 deletions

diff --git a/src/game.c b/src/game.c
index 70c3235..b49e859 100644
--- a/src/game.c
+++ b/src/game.c
@@ -12,12 +12,14 @@
 static uint32_t hiscore = 15000;
 
 static uint8_t hud;
+static volatile uint8_t clock_updated;
 
 /* game variables */
 static uint8_t lives;
 static uint32_t score;
 static uint8_t stage;
 static uint8_t gold;
+static uint8_t time;
 
 void hud_render()
 {
@@ -49,7 +51,7 @@ void hud_render()
 
     if (hud & HUD_TIME)
     {
-        sprintf(b, "%02d", 0);
+        sprintf(b, "%02d", time);
         put_text(172, 4, b);
     }
 
@@ -68,14 +70,23 @@ void run_game()
     score = 0;
     stage = 0;
     gold = 30;
+    time = GAME_TIME_MAX;
 
     hud = HUD_ALL;
 
     map_init(binary_stage_start);
     map_render();
 
+    timer_start(GAME_TIME_MAX, &clock_updated);
+
     while (!keys[KEY_ESC])
     {
+        if (clock_updated)
+        {
+            time = timer_value();
+            hud |= HUD_TIME;
+        }
+
         if (hud)
             hud_render();