Avances y correccion basica, funciona pero con detalles

src/Chip8.cpp

@@ -7,8 +7,11 @@
 
 #include "bitops.h"
 
-Chip8::Chip8(): target_cycle_time(1.0 / 700.0), last_update_time(0), accumulator(0) {}
-
+Chip8::Chip8(): target_cycle_time{1.0 / 700.0},
+                last_update_time{0},
+                accumulator{0},
+                run{false},
+                step{false} {}
 
 bool Chip8::init() {
     if (!graphics.init()) {
@@ -18,11 +21,9 @@ bool Chip8::init() {
     last_update_time = SDL_GetTicks();
     accumulator = 0;
 
-    const auto rom = read_rom("roms/1-ibm-logo.ch8");
+    const auto rom = read_rom("roms/6-keypad.ch8");
     interpreter.load_rom(rom);
 
-    interpreter.display.set();
-
     return true;
 }
 
@@ -30,7 +31,6 @@ void Chip8::set_keyboard_state(std::span<const bool> keyboard_state) {
     this->keyboard_state = keyboard_state;
 }
 
-
 std::vector<uint8_t> Chip8::read_rom(const std::string& path) {
     std::ifstream rom_file(path, std::ios::binary);
 
@@ -72,24 +72,59 @@ void Chip8::load_keyboard() {
 
 
 void Chip8::update() {
-    auto current_time = SDL_GetTicks();
-    double delta_time = static_cast<double>(current_time - last_update_time) / 1000.0;
-    last_update_time = current_time;
-    accumulator += delta_time;
-
     load_keyboard();
-    while (accumulator >= target_cycle_time) {
-        interpreter.run();
-        accumulator -= target_cycle_time;
-    }
 
     std::stringstream buffer;
-    buffer << std::format("PC: {:03X} | SP: {:02X} | V0-VF: ", interpreter.pc, interpreter.sp);
+    buffer << std::format(
+        "PC: {:03X} | SP: {:02X} | I {:02X} | DT {:02X} | ST {:02X} | INST: {:02X}{:02X} | V0-VF: ",
+        interpreter.pc,
+        interpreter.sp,
+        interpreter.i,
+        interpreter.dt,
+        interpreter.st,
+        interpreter.memory[interpreter.pc],
+        interpreter.memory[interpreter.pc + 1]
+    );
     for (int i = 0; i < 16; ++i) {
         buffer << std::format("{:02X}", interpreter.v[i]);
         if (i < 15) buffer << ",";
     }
-    buffer << " |";
+    buffer << " | ";
+
+    if (run) {
+        execute_instructions();
+    } else if (step) {
+        execute_instruction();
+        step = false;
+        last_update_time = SDL_GetTicks();
+    } else {
+        last_update_time = SDL_GetTicks();
+    }
+
 
     graphics.draw(interpreter.display, buffer.str());
 }
+
+void Chip8::execute_instructions() {
+    const auto current_time = SDL_GetTicks();
+    const auto delta_time = static_cast<double>(current_time - last_update_time) / 1000.0;
+    last_update_time = current_time;
+    accumulator += delta_time;
+
+    while (accumulator >= target_cycle_time) {
+        execute_instruction();
+        accumulator -= target_cycle_time;
+    }
+}
+
+void Chip8::execute_instruction() {
+    interpreter.run();
+}
+
+void Chip8::on_keydown(SDL_Scancode scancode) {
+    if (scancode == SDL_SCANCODE_F1) {
+        run = !run;
+    } else if (scancode == SDL_SCANCODE_F2) {
+        step = true;
+    }
+}