From 02f7afe76583af37961030a08fd2bd6da3d7d9bc Mon Sep 17 00:00:00 2001
From: Alexander Petrov <alex@snark13.com>
Date: Mon, 13 Jul 2026 17:38:04 +0300
Subject: [PATCH] =?UTF-8?q?examples/rpgwalk:=20FPS-=D0=BC=D0=B5=D1=82?=
 =?UTF-8?q?=D1=80?=
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Плашка слева-сверху (значение раз в секунду, рисуется на обеих
страницах — fps_draw=2, как в examples/space).  ~39 fps на 8 ходящих
персонажах (кадр на грани 20 мс — частично двухvsync'овые кадры).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 docs/size_baseline.tsv     |  2 +-
 examples/rpgwalk/rpgwalk.c | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/docs/size_baseline.tsv b/docs/size_baseline.tsv
index a2d3a04..1427363 100644
--- a/docs/size_baseline.tsv
+++ b/docs/size_baseline.tsv
@@ -41,7 +41,7 @@ mouse	4382
 openenv	6124
 palfile	5406
 ptime	5744
-rpgwalk	9484
+rpgwalk	9683
 rt_test	4892
 seek	4188
 simple	955
diff --git a/examples/rpgwalk/rpgwalk.c b/examples/rpgwalk/rpgwalk.c
index dc65549..ea54bda 100644
--- a/examples/rpgwalk/rpgwalk.c
+++ b/examples/rpgwalk/rpgwalk.c
@@ -101,6 +101,22 @@ static void turn_90(uint8_t i)
     go_edge(i);
 }
 
+/* FPS-плашка слева-сверху: значение раз в секунду, рисуется на ОБЕИХ
+ * страницах (fps_draw = 2 кадра), банк 0x50 — heal её учитывает. */
+static void show_fps(uint8_t v)
+{
+    char buf[4];
+
+    buf[0] = (char)('0' + (v / 100) % 10);
+    buf[1] = (char)('0' + (v / 10) % 10);
+    buf[2] = (char)('0' + v % 10);
+    buf[3] = 0;
+    setcolor(WHITE);
+    setfillstyle(SOLID_FILL, BLACK);
+    bar(0, 0, 27, 9);
+    outtextxy(2, 1, buf);
+}
+
 static void draw_field(void)
 {
     int i;
@@ -124,6 +140,7 @@ static void draw_field(void)
 int main(void)
 {
     uint8_t i, page, hidden;
+    uint8_t frames = 0, last_sec, fps_val = 0, fps_draw = 0;
     datetime_t dt;
 
     if (atlas_load(&at1, "bard1.atl") != 0 &&
@@ -161,6 +178,7 @@ int main(void)
     gfx_set_visible_page(0);
     getdatetime(&dt);
     srand((unsigned)(dt.second * 77u + dt.minute));
+    last_sec = dt.second;
 
     for (;;) {
         if (kbhit() && getch() == 27)
@@ -176,6 +194,18 @@ int main(void)
 
         hidden = gfx_get_visible_page() ^ 1;
         gfx_set_draw_page(hidden);
+        frames++;
+        getdatetime(&dt);
+        if (dt.second != last_sec) {
+            last_sec = dt.second;
+            fps_val  = frames;
+            frames   = 0;
+            fps_draw = 2;
+        }
+        if (fps_draw) {
+            fps_draw--;
+            show_fps(fps_val);
+        }
         sprite_update(sp, NCHR);
         gfx_wait_vsync();
         gfx_set_visible_page(hidden);