From 784150fe885b107c5b649163369915155a48ff64 Mon Sep 17 00:00:00 2001
From: Raimon Zamora <jaildoctor@gmail.com>
Date: Wed, 3 Jun 2026 11:33:17 +0200
Subject: [PATCH] - [FIX] Un poc mes de neteja - [NEW] Implementat el glitch
 "STAT IRQ Blocking" - [NEW] Afegit lagueirtofile

---
 .gitignore    |  1 +
 gbscreen.cpp  | 33 ++++++++++++++++++++-------------
 gbscreen.h    |  2 +-
 lagueirtofile |  6 ++++++
 4 files changed, 28 insertions(+), 14 deletions(-)
 create mode 100644 lagueirtofile

diff --git a/.gitignore b/.gitignore
index d6cf3ab..947876c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 gb
+build/*
\ No newline at end of file
diff --git a/gbscreen.cpp b/gbscreen.cpp
index 6443065..0ba82a8 100644
--- a/gbscreen.cpp
+++ b/gbscreen.cpp
@@ -69,6 +69,8 @@ namespace gbscreen
     #define WY (*_WY)
     #define WX (*_WX)
 
+    #define IF 0xff0f
+    bool last_interrupt_lcd_state = false;
 
     bool eventHandler(SDL_Event *e)
     {
@@ -315,7 +317,7 @@ namespace gbscreen
     void refresh(const uint32_t dt, const bool full)
     {
         if ((LCDC&0x80)==0) return;
-        
+
         for (int i=0;i<dt;++i)
         {
             // Açò va volcant els pixels del line_buffer en pantalla
@@ -328,7 +330,8 @@ namespace gbscreen
             }
 
             // gestió de en quin dot i linea estem, i tot el que ha de passar
-            uint8_t interrupts = 0x00;
+            //uint8_t interrupts = 0x00;
+            bool current_interrupt_lcd_state = false;
             dots_in_scanline++;
             if ( (dots_in_scanline==80) && (LY<144) )
             {
@@ -337,7 +340,7 @@ namespace gbscreen
             else if ( (dots_in_scanline==252) && (LY<144) )
             {
                 STAT = (STAT & 0xFC); // Set mode 0
-                if (STAT&0x08) interrupts |= INTERRUPT_LCD;
+                if (STAT&0x08) current_interrupt_lcd_state = true; // interrupts |= INTERRUPT_LCD;
             }
             else if (dots_in_scanline==456)
             {
@@ -346,16 +349,18 @@ namespace gbscreen
                 if (LY==154) LY=0;
                 if (LY==144)
                 {
+                    // Set vblank interrupt
+                    mem::writeMem(IF, mem::readMem(IF) | INTERRUPT_VBLANK);
                     STAT = (STAT & 0xFC) | 0x01; // Set mode 1
-                    interrupts |= INTERRUPT_VBLANK;
-                    if (STAT&0x10) interrupts |= INTERRUPT_LCD;
+                    //interrupts |= INTERRUPT_VBLANK;
+                    if (STAT&0x10) current_interrupt_lcd_state = true; //interrupts |= INTERRUPT_LCD;
                 }
                 else
                 {
                     if (LY<144)
                     {
                         STAT = (STAT & 0xFC) | 0x02; // Set mode 2
-                        if (STAT&0x20) interrupts |= INTERRUPT_LCD;
+                        if (STAT&0x20) current_interrupt_lcd_state = true; // interrupts |= INTERRUPT_LCD;
                         fill_line_buffer_bkg();
                         fill_line_buffer_win();
                         fill_line_buffer_obj();
@@ -364,7 +369,7 @@ namespace gbscreen
                 if (LY==LYC)
                 {
                     STAT = (STAT & 0xFB) | 0x04;
-                    if (STAT&0x40) interrupts |= INTERRUPT_LCD;
+                    if (STAT&0x40) current_interrupt_lcd_state = true; // interrupts |= INTERRUPT_LCD;
                 }
                 else
                 {
@@ -372,10 +377,12 @@ namespace gbscreen
                 }
             }
 
-            if (interrupts)
+            if (!last_interrupt_lcd_state && current_interrupt_lcd_state)
             {
-                sm83::interrupt(interrupts);
+                mem::writeMem(IF, mem::readMem(IF) | INTERRUPT_LCD);
+                //sm83::interrupt(interrupts);
             }
+            last_interrupt_lcd_state = current_interrupt_lcd_state;
 
             t_screen++;
             if (t_screen>=t_states_total)
@@ -504,8 +511,8 @@ namespace gbscreen
         return full_refresh;
     }
 
-    SDL_Renderer *getrenderer()
-    {
-        return ren;
-    }
+    //SDL_Renderer *getrenderer()
+    //{
+    //    return ren;
+    //}
 }
diff --git a/gbscreen.h b/gbscreen.h
index ee7f72b..e8f9686 100644
--- a/gbscreen.h
+++ b/gbscreen.h
@@ -21,5 +21,5 @@ namespace gbscreen
     void toggleFullRefresh();
     const bool getFullRefresh();
 
-    SDL_Renderer *getrenderer();
+    //SDL_Renderer *getrenderer();
 }
diff --git a/lagueirtofile b/lagueirtofile
new file mode 100644
index 0000000..d5fc4b8
--- /dev/null
+++ b/lagueirtofile
@@ -0,0 +1,6 @@
+[linux_debug] default
+cppflags = -g
+libs = -lSDL2
+executable = gb
+sourcepath = .
+buildpath = build