From ae76160f11471e2e7475696a331509a2722080b2 Mon Sep 17 00:00:00 2001
From: william <william.nolin.1@ens.etsmtl.ca>
Date: Wed, 1 May 2024 12:58:15 -0400
Subject: [PATCH] PPU debugger view

---
 debugger/CMakeLists.txt |  4 ++--
 debugger/cpu_view.h     | 11 +++------
 debugger/debugger.c     |  6 ++++-
 debugger/ppu_view.c     | 50 +++++++++++++++++++++++++++++++++++++++++
 debugger/ppu_view.h     | 23 +++++++++++++++++++
 5 files changed, 83 insertions(+), 11 deletions(-)
 create mode 100644 debugger/ppu_view.c
 create mode 100644 debugger/ppu_view.h

diff --git a/debugger/CMakeLists.txt b/debugger/CMakeLists.txt
index 37fca4e..d4603d4 100644
--- a/debugger/CMakeLists.txt
+++ b/debugger/CMakeLists.txt
@@ -1,5 +1,5 @@
-set(HEADERS cpu_view.h cursor.h debugger.h dialog.h keys.h memory_view.h program_view.h window.h)
-set(SOURCE cpu_view.c cursor.c debugger.c dialog.c memory_view.c program_view.c window.c)
+set(HEADERS cpu_view.h cursor.h debugger.h dialog.h keys.h memory_view.h ppu_view.h program_view.h window.h)
+set(SOURCE cpu_view.c cursor.c debugger.c dialog.c memory_view.c ppu_view.c program_view.c window.c)
 
 add_library(nes_debugger ${HEADERS} ${SOURCE})
 
diff --git a/debugger/cpu_view.h b/debugger/cpu_view.h
index 6d0d699..581cd94 100644
--- a/debugger/cpu_view.h
+++ b/debugger/cpu_view.h
@@ -2,13 +2,13 @@
 // Created by william on 4/30/24.
 //
 
-#ifndef NESEMULATOR_CPU_VIEW_H
-#define NESEMULATOR_CPU_VIEW_H
-
 #include "window.h"
 #include "../include/types.h"
 #include "../include/cpu.h"
 
+#ifndef NESEMULATOR_CPU_VIEW_H
+#define NESEMULATOR_CPU_VIEW_H
+
 #define CPU_VIEW_HEIGHT 14
 #define CPU_VIEW_WIDTH 12
 
@@ -19,11 +19,6 @@ typedef struct cpu_view {
 
 /**
  * Initializes a CPU view for a system RAM.
- *
- * @param interact
- * @param ram
- * @param x
- * @param y
  */
 CpuView *cv_init(CPU *cpu, int x, int y);
 
diff --git a/debugger/debugger.c b/debugger/debugger.c
index ecab5fb..5475b18 100644
--- a/debugger/debugger.c
+++ b/debugger/debugger.c
@@ -10,6 +10,7 @@
 #include "program_view.h"
 #include "keys.h"
 #include "cpu_view.h"
+#include "ppu_view.h"
 
 void debugger_create_window() {
     setenv("TERMINFO", "/usr/share/terminfo", 1);
@@ -53,6 +54,7 @@ void debugger_uninit_interactive_windows(LinkedList *windows) {
 
 void start_debugger(System *system) {
     CpuView *cpu_view;
+    PpuView *ppu_view;
     LinkedList interactive_windows;
     InteractWindow *current_window;
 
@@ -60,7 +62,8 @@ void start_debugger(System *system) {
 
     interactive_windows = debugger_create_interactive_windows(system);
     current_window = interactive_windows.current->data;
-    cpu_view = cv_init(&system->cpu, MEMORY_VIEW_WIDTH + PROGRAM_VIEW_WIDTH, 0);
+    cpu_view = cv_init(&system->cpu, 0, MEMORY_VIEW_HEIGHT);
+    ppu_view = ppv_init(&system->ppu, CPU_VIEW_WIDTH, MEMORY_VIEW_HEIGHT);
 
     cursor_enable(&current_window->cursor);
 
@@ -92,6 +95,7 @@ void start_debugger(System *system) {
 
     debugger_uninit_interactive_windows(&interactive_windows);
     cv_uninit(cpu_view);
+    ppv_uninit(ppu_view);
 
     endwin();
 }
\ No newline at end of file
diff --git a/debugger/ppu_view.c b/debugger/ppu_view.c
new file mode 100644
index 0000000..05bd57a
--- /dev/null
+++ b/debugger/ppu_view.c
@@ -0,0 +1,50 @@
+//
+// Created by william on 5/1/24.
+//
+
+#include <stdlib.h>
+#include "ppu_view.h"
+
+void ppv_print_line(PpuView *view, byte reg, int line, char *fmt) {
+    int reg_value = view->ppu->registers[reg];
+    window_print(view->window, 0, line, fmt);
+
+    for (int i = 0; i < 0x8; i++) {
+        byte mask = 0x80 >> i;
+        byte bit = (reg_value & mask) >> (8 - i - 1);
+
+        int print_offset = 10 + i;
+        if (i > 3) {
+            print_offset += 1;
+        }
+
+        window_print(view->window, print_offset, line, "%d", bit);
+    }
+}
+
+void ppv_print(PpuView *view) {
+    ppv_print_line(view, PPU_REGISTER_CTRL, 0, "    CTRL:");
+    ppv_print_line(view, PPU_REGISTER_MASK, 1, "    MASK:");
+    ppv_print_line(view, PPU_REGISTER_STATUS, 2, "  STATUS:");
+    ppv_print_line(view, PPU_REGISTER_OAM_ADDR, 3, "OAM_ADDR:");
+    ppv_print_line(view, PPU_REGISTER_OAM_DATA, 4, "OAM_DATA:");
+    ppv_print_line(view, PPU_REGISTER_SCROLL, 5, "  SCROLL:");
+    ppv_print_line(view, PPU_REGISTER_ADDR, 6, "    ADDR:");
+    ppv_print_line(view, PPU_REGISTER_DATA, 7, "    DATA:");
+}
+
+PpuView *ppv_init(PPU *ppu, int x, int y) {
+    PpuView *view = malloc(sizeof(PpuView));
+    view->window = malloc(sizeof(Window));
+    view->ppu = ppu;
+
+    window_init(view->window, x, y, PPU_VIEW_WIDTH, PPU_VIEW_HEIGHT, "PPU VIEW");
+    ppv_print(view);
+
+    return view;
+}
+
+void ppv_uninit(PpuView *view) {
+    free(view->window);
+    free(view);
+}
\ No newline at end of file
diff --git a/debugger/ppu_view.h b/debugger/ppu_view.h
new file mode 100644
index 0000000..1d94895
--- /dev/null
+++ b/debugger/ppu_view.h
@@ -0,0 +1,23 @@
+//
+// Created by william on 5/1/24.
+//
+
+#include "../include/ppu.h"
+#include "window.h"
+
+#ifndef NES_EMULATOR_PPU_VIEW_H
+#define NES_EMULATOR_PPU_VIEW_H
+
+#define PPU_VIEW_HEIGHT 14
+#define PPU_VIEW_WIDTH 22
+
+typedef struct ppu_view {
+    Window *window;
+    PPU *ppu;
+} PpuView;
+
+PpuView *ppv_init(PPU *ppu, int x, int y);
+
+void ppv_uninit(PpuView *ppu_view);
+
+#endif //NES_EMULATOR_PPU_VIEW_H