From 9742c844de2c53536944de62edfa972586de17f5 Mon Sep 17 00:00:00 2001
From: Luna Nightshade <accounts@rya.gay>
Date: Mon, 22 May 2023 22:42:00 +0100
Subject: [PATCH] add air bits mmio code

---
 chuniio/chuniio.c | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/chuniio/chuniio.c b/chuniio/chuniio.c
index 32a9333..cb90302 100644
--- a/chuniio/chuniio.c
+++ b/chuniio/chuniio.c
@@ -38,6 +38,15 @@ typedef struct IPCMemoryInfo IPCMemoryInfo;
 static HANDLE FileMappingHandle;
 IPCMemoryInfo* FileMapping;
 
+typedef uint8_t AirFileIPCData;
+static HANDLE AirFileMappingHandle;
+AirFileIPCData* AirFileMapping;
+
+API uint16_t chuni_io_get_api_version(void)
+{
+    return 0x0101;
+}
+
 void initSharedMemory()
 {
     if (FileMapping)
@@ -54,6 +63,16 @@ void initSharedMemory()
         return;
     }
 
+    if ((AirFileMappingHandle = CreateFileMappingA(INVALID_HANDLE_VALUE, 0, PAGE_READWRITE, 0, sizeof(AirFileIPCData), "Local\\BROKENITHM_AIR_BITS")) == 0)
+    {
+        return;
+    }
+
+    if ((AirFileMapping = (AirFileIPCData*)MapViewOfFile(AirFileMappingHandle, FILE_MAP_ALL_ACCESS, 0, 0, sizeof(AirFileIPCData))) == 0)
+    {
+        return;
+    }
+
     memset(FileMapping, 0, sizeof(IPCMemoryInfo));
     SetThreadExecutionState(ES_DISPLAY_REQUIRED | ES_CONTINUOUS);
 }
@@ -99,7 +118,7 @@ API void chuni_io_jvs_read_coin_counter(uint16_t* out)
 
 API void chuni_io_jvs_poll(uint8_t* opbtn, uint8_t* beams)
 {
-    size_t i;
+    //size_t i;
 
     if ((FileMapping && FileMapping->testBtn) || GetAsyncKeyState(chuni_io_cfg.vk_test))
     {
@@ -111,13 +130,7 @@ API void chuni_io_jvs_poll(uint8_t* opbtn, uint8_t* beams)
         *opbtn |= 0x02; /* Service */
     }
 
-    for (i = 0; i < 6; i++)
-    {
-        if (FileMapping && FileMapping->airIoStatus[i])
-        {
-            *beams |= (1 << i);
-        }
-    }
+    *beams = *AirFileMapping;
 }
 
 API void chuni_io_jvs_set_coin_blocker(bool open)