From 4d78cf157bd14755bcc39520d523a6d21a56966a Mon Sep 17 00:00:00 2001
From: uvok
Date: Sun, 11 Jan 2026 11:17:13 +0100
Subject: Add paused state, print help

fix separate "wait for feedback"
---
 nandgame/cpp/Vcomputer__main.cpp |  1 +
 nandgame/cpp/simpc_ui.cpp        | 30 ++++++++++++++++++++++++++----
 nandgame/cpp/simpc_ui.h          |  6 ++++--
 3 files changed, 31 insertions(+), 6 deletions(-)

(limited to 'nandgame')

diff --git a/nandgame/cpp/Vcomputer__main.cpp b/nandgame/cpp/Vcomputer__main.cpp
index ec9eb31..cc0f7c0 100644
--- a/nandgame/cpp/Vcomputer__main.cpp
+++ b/nandgame/cpp/Vcomputer__main.cpp
@@ -94,6 +94,7 @@ int main(int argc, char **argv, char **) {
   // Print statistical summary report
   // contextp->statsPrintSummary();
 
+  simpc_ui_confirm_finish();
   simpc_ui_cleanup();
 
   return 0;
diff --git a/nandgame/cpp/simpc_ui.cpp b/nandgame/cpp/simpc_ui.cpp
index 44d3424..e3435bc 100644
--- a/nandgame/cpp/simpc_ui.cpp
+++ b/nandgame/cpp/simpc_ui.cpp
@@ -42,12 +42,15 @@
 #include <cstdio>
 #include <sched.h>
 
+bool paused = false;
+
 void simpc_ui_write(const std::unique_ptr<Vcomputer> &topp, int &i,
-             StepPosition_t sp) {
+                    StepPosition_t sp) {
   uint16_t opcode = topp->computer->PC_content_int;
 
   PRINT_ME(1, 1, "Step: %10d \b%c", i,
            sp == StepPosition_t::BEFORE_EVAL ? 'A' : 'B');
+  PRINT_ME(2, 1, "%-20s", paused ? "Paused" : "Running");
   PRINT_ME(1 + NCUR_OFFSET, NCUR_X,
            "CLK1: %4d\tPC: @0x%04X\tINS: 0x%04X\tHLT: %d", topp->clk_in,
            // wrong
@@ -72,13 +75,24 @@ void simpc_ui_write(const std::unique_ptr<Vcomputer> &topp, int &i,
   PRINT_ME(7 + NCUR_OFFSET, NCUR_X, "ALU");
   PRINT_ME(8 + NCUR_OFFSET, NCUR_X, "X: %5" PRId16 "\tY: %5" PRId16,
            topp->computer->CPU->my_alu->int_op_x,
-           topp->computer->CPU->my_alu->int_op_y)
+           topp->computer->CPU->my_alu->int_op_y);
+  PRINT_ME(getmaxy(stdscr) - 1, 1, "q - Quit; p - (Un)pause; any key in pause - step");
+  
 
   PRINT_NEXT();
+
+  int ch = getch();
+  if (ch == 'p') {
+    nodelay(stdscr, paused);
+    paused = !paused;
+  } else if (ch == 'q') {
+    simpc_ui_cleanup();
+    exit(0);
+  }
 }
 
 void simpc_ui_finish_message(const std::unique_ptr<VerilatedContext> &contextp,
-                 const std::unique_ptr<Vcomputer> &topp) {
+                             const std::unique_ptr<Vcomputer> &topp) {
 #if NCUR
   refresh();
 #endif
@@ -96,12 +110,20 @@ void simpc_ui_init(void) {
 #if NCUR
   initscr();
   curs_set(0);
+  nodelay(stdscr, TRUE);
+  noecho();
 #endif
 }
 
 void simpc_ui_cleanup(void) {
 #if NCUR
-  getch();
   endwin();
 #endif
 }
+
+void simpc_ui_confirm_finish(void) {
+#if NCUR
+  nodelay(stdscr, FALSE);
+  getch();
+#endif
+}
\ No newline at end of file
diff --git a/nandgame/cpp/simpc_ui.h b/nandgame/cpp/simpc_ui.h
index 3312b64..4a990a6 100644
--- a/nandgame/cpp/simpc_ui.h
+++ b/nandgame/cpp/simpc_ui.h
@@ -6,7 +6,9 @@
 #include <memory>
 
 void simpc_ui_init(void);
-void simpc_ui_write(const std::unique_ptr<Vcomputer> &topp, int &i, StepPosition_t sp);
+void simpc_ui_write(const std::unique_ptr<Vcomputer> &topp, int &i,
+                    StepPosition_t sp);
 void simpc_ui_finish_message(const std::unique_ptr<VerilatedContext> &contextp,
-                 const std::unique_ptr<Vcomputer> &topp);
+                             const std::unique_ptr<Vcomputer> &topp);
+void simpc_ui_confirm_finish(void);
 void simpc_ui_cleanup(void);
-- 
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