Add score

game.c

@@ -125,6 +125,7 @@ static unsigned level;
 static bool dead;
 static unsigned asteroid_count;
 static uint8_t counter;
+static unsigned score;
 
 static unsigned ship_entity_id;
 static unsigned ship_shape_id;
@@ -355,6 +356,7 @@ static void destroy_asteroid(entity_t *a, vec2_t shot_vel)
 {
 	a->dead = true;
 	--asteroid_count;
+	++score;
 
 	float r;
 	if (a->radius == ASTEROID_HUGE) {
@@ -491,6 +493,7 @@ static void win()
 static void reset()
 {
 	level = INIT_LEVEL;
+	score = 0;
 	create_field();
 }
 
@@ -555,12 +558,14 @@ void game_draw()
 		    shapes[i].connect);
 	}
 
+	text_draw_score(aspect, score);
+
 	if (dead && !(counter & COUNTER_MASK))
-		text_draw("GAME OVER");
+		text_draw_centre("GAME OVER");
 
 	if (!dead && asteroid_count == 0) {
 		draw_arrow();
 		if (!(counter & COUNTER_MASK))
-			text_draw("CLEAR");
+			text_draw_centre("CLEAR");
 	}
 }