add keyboard input to debug viewer

Author: kirjavascript

tests/Cargo.lock

@@ -6,7 +6,7 @@ edition = "2021"
 [dependencies]
 gumdrop = "0.8.1"
 rusticnes-core = { git = "https://github.com/zeta0134/rusticnes-core.git", version = "0.2.0" }
-minifb = "0.25"
+minifb = "0.27"
 
 # for patch testing
 flips = "0.2.1"

tests/Cargo.toml

@@ -32,21 +32,54 @@ impl Video {
 }
 
 /// debug helper for showing the current visual state.
-/// hotkeys: 'q' closes window, 's' steps by a frame
+/// hotkeys: 'q' closes window, 's' steps by a frame, 'p' toggles autoplay
 #[allow(dead_code)]
 pub fn preview(emu: &mut NesState) {
+    preview_base(emu, false);
+}
+
+/// debug viewer with keyboard input
+#[allow(dead_code)]
+pub fn preview_input(emu: &mut NesState) {
+    preview_base(emu, true);
+}
+
+fn preview_base(emu: &mut NesState, has_input: bool) {
     let mut view = Video::new();
+    let mut running = false;
     view.window.set_key_repeat_rate(0.1);
+    view.window.set_target_fps(60);
+
     loop {
+        if has_input {
+            use crate::input::*;
+            let mut buttons = 0;
+
+            if view.window.is_key_down(Key::Up) { buttons |= UP; }
+            if view.window.is_key_down(Key::Down) { buttons |= DOWN; }
+            if view.window.is_key_down(Key::Left) { buttons |= LEFT; }
+            if view.window.is_key_down(Key::Right) { buttons |= RIGHT; }
+            if view.window.is_key_down(Key::V) { buttons |= START; }
+            if view.window.is_key_down(Key::C) { buttons |= SELECT; }
+            if view.window.is_key_down(Key::X) { buttons |= A; }
+            if view.window.is_key_down(Key::Z) { buttons |= B; }
+
+            crate::util::set_controller_raw(emu, buttons);
+        }
+
         if !view.window.is_open() {
             break;
         }
         if view.window.is_key_pressed(Key::Q, KeyRepeat::No) {
             break;
         }
-        if view.window.is_key_pressed(Key::S, KeyRepeat::Yes) {
+        if view.window.is_key_pressed(Key::P, KeyRepeat::No) {
+            running = !running;
+        }
+        if running || view.window.is_key_pressed(Key::S, KeyRepeat::Yes) {
             emu.run_until_vblank();
         }
+
         view.render(emu);
     }
 }