From 91e62b5a1d1f4b3517cd28bcc2d297fa0df79369 Mon Sep 17 00:00:00 2001
From: Luna Nightshade <accounts@rya.gay>
Date: Mon, 22 May 2023 22:29:44 +0100
Subject: [PATCH] add brokenithm code

---
 chuniio/chuniio.c | 125 ++++++++++++++++++++++++++++++++--------------
 1 file changed, 87 insertions(+), 38 deletions(-)

diff --git a/chuniio/chuniio.c b/chuniio/chuniio.c
index 8e07f56..32a9333 100644
--- a/chuniio/chuniio.c
+++ b/chuniio/chuniio.c
@@ -1,3 +1,11 @@
+// chuniio_air - chuniio.c
+// project air modified version
+//
+// based on code by esterTion
+// modified by astelle nightshade (lostkagamine)
+// 
+// music game never die
+
 #include <windows.h>
 
 #include <process.h>
@@ -11,37 +19,79 @@ static unsigned int __stdcall chuni_io_slider_thread_proc(void* ctx);
 
 static bool chuni_io_coin;
 static uint16_t chuni_io_coins;
-static uint8_t chuni_io_hand_pos;
 static HANDLE chuni_io_slider_thread;
 static bool chuni_io_slider_stop_flag;
 static struct chuni_io_config chuni_io_cfg;
 
-API uint16_t chuni_io_get_api_version(void)
+struct IPCMemoryInfo
+{
+    uint8_t airIoStatus[6];
+    uint8_t sliderIoStatus[32];
+    uint8_t ledRgbData[32 * 3];
+    uint8_t testBtn;
+    uint8_t serviceBtn;
+    uint8_t coinInsertion;
+    uint8_t cardRead;
+};
+
+typedef struct IPCMemoryInfo IPCMemoryInfo;
+static HANDLE FileMappingHandle;
+IPCMemoryInfo* FileMapping;
+
+void initSharedMemory()
 {
-    return 0x0101;
+    if (FileMapping)
+    {
+        return;
+    }
+    if ((FileMappingHandle = CreateFileMappingA(INVALID_HANDLE_VALUE, 0, PAGE_READWRITE, 0, sizeof(IPCMemoryInfo), "Local\\BROKENITHM_SHARED_BUFFER")) == 0)
+    {
+        return;
+    }
+
+    if ((FileMapping = (IPCMemoryInfo*)MapViewOfFile(FileMappingHandle, FILE_MAP_ALL_ACCESS, 0, 0, sizeof(IPCMemoryInfo))) == 0)
+    {
+        return;
+    }
+
+    memset(FileMapping, 0, sizeof(IPCMemoryInfo));
+    SetThreadExecutionState(ES_DISPLAY_REQUIRED | ES_CONTINUOUS);
 }
 
 API HRESULT chuni_io_jvs_init(void)
 {
     chuni_io_config_load(&chuni_io_cfg, L".\\segatools.ini");
 
+    initSharedMemory();
+
     return S_OK;
 }
 
 API void chuni_io_jvs_read_coin_counter(uint16_t* out)
 {
-    if (out == NULL) {
+    if (out == NULL)
+    {
         return;
     }
 
-    if (GetAsyncKeyState(chuni_io_cfg.vk_coin)) {
-        if (!chuni_io_coin) {
-            chuni_io_coin = true;
-            chuni_io_coins++;
-        }
+    if (FileMapping && FileMapping->coinInsertion)
+    {
+        chuni_io_coins++;
+        FileMapping->coinInsertion = 0;
     }
     else {
-        chuni_io_coin = false;
+        if (GetAsyncKeyState(chuni_io_cfg.vk_coin))
+        {
+            if (!chuni_io_coin)
+            {
+                chuni_io_coin = true;
+                chuni_io_coins++;
+            }
+        }
+        else
+        {
+            chuni_io_coin = false;
+        }
     }
 
     *out = chuni_io_coins;
@@ -51,32 +101,29 @@ API void chuni_io_jvs_poll(uint8_t* opbtn, uint8_t* beams)
 {
     size_t i;
 
-    if (GetAsyncKeyState(chuni_io_cfg.vk_test)) {
+    if ((FileMapping && FileMapping->testBtn) || GetAsyncKeyState(chuni_io_cfg.vk_test))
+    {
         *opbtn |= 0x01; /* Test */
     }
 
-    if (GetAsyncKeyState(chuni_io_cfg.vk_service)) {
+    if ((FileMapping && FileMapping->serviceBtn) || GetAsyncKeyState(chuni_io_cfg.vk_service))
+    {
         *opbtn |= 0x02; /* Service */
     }
 
-    if (GetAsyncKeyState(chuni_io_cfg.vk_ir)) {
-        if (chuni_io_hand_pos < 6) {
-            chuni_io_hand_pos++;
-        }
-    }
-    else {
-        if (chuni_io_hand_pos > 0) {
-            chuni_io_hand_pos--;
-        }
-    }
-
-    for (i = 0; i < 6; i++) {
-        if (chuni_io_hand_pos > i) {
+    for (i = 0; i < 6; i++)
+    {
+        if (FileMapping && FileMapping->airIoStatus[i])
+        {
             *beams |= (1 << i);
         }
     }
 }
 
+API void chuni_io_jvs_set_coin_blocker(bool open)
+{
+}
+
 API HRESULT chuni_io_slider_init(void)
 {
     return S_OK;
@@ -84,7 +131,8 @@ API HRESULT chuni_io_slider_init(void)
 
 API void chuni_io_slider_start(chuni_io_slider_callback_t callback)
 {
-    if (chuni_io_slider_thread != NULL) {
+    if (chuni_io_slider_thread != NULL)
+    {
         return;
     }
 
@@ -97,9 +145,10 @@ API void chuni_io_slider_start(chuni_io_slider_callback_t callback)
         NULL);
 }
 
-void chuni_io_slider_stop(void)
+API void chuni_io_slider_stop(void)
 {
-    if (chuni_io_slider_thread == NULL) {
+    if (chuni_io_slider_thread == NULL)
+    {
         return;
     }
 
@@ -113,24 +162,24 @@ void chuni_io_slider_stop(void)
 
 API void chuni_io_slider_set_leds(const uint8_t* rgb)
 {
+    if (FileMapping)
+    {
+        memcpy(FileMapping->ledRgbData, rgb, 32 * 3);
+    }
 }
 
 static unsigned int __stdcall chuni_io_slider_thread_proc(void* ctx)
 {
     chuni_io_slider_callback_t callback;
-    uint8_t pressure[32];
-    size_t i;
+    uint8_t pressure[32] = { 0 };
 
     callback = ctx;
 
-    while (!chuni_io_slider_stop_flag) {
-        for (i = 0; i < _countof(pressure); i++) {
-            if (GetAsyncKeyState(chuni_io_cfg.vk_cell[i]) & 0x8000) {
-                pressure[i] = 128;
-            }
-            else {
-                pressure[i] = 0;
-            }
+    while (!chuni_io_slider_stop_flag)
+    {
+        if (FileMapping)
+        {
+            memcpy(pressure, FileMapping->sliderIoStatus, 32);
         }
 
         callback(pressure);