From bc522b27e064fe0b1e2a54f546e940a5f4eac9d6 Mon Sep 17 00:00:00 2001
From: kichikuou <KichikuouChrome@gmail.com>
Date: Sat, 16 Mar 2024 12:45:07 +0900
Subject: [PATCH] Android: Report ERROR() with a message box

---
 include/vm.h  |  5 +++++
 src/system4.c | 11 +++++++++++
 2 files changed, 16 insertions(+)

diff --git a/include/vm.h b/include/vm.h
index 3849142..80682b5 100644
--- a/include/vm.h
+++ b/include/vm.h
@@ -129,8 +129,13 @@ void vm_stack_trace(void);
 _Noreturn void _vm_error(const char *fmt, ...);
 _Noreturn void vm_exit(int code);
 
+#ifdef __ANDROID__
+// Report the error with a message box and exit.
+#define VM_ERROR ERROR
+#else
 #define VM_ERROR(fmt, ...) \
 	_vm_error("*ERROR*(%s:%s:%d): " fmt "\n", __FILE__, __func__, __LINE__, ##__VA_ARGS__)
+#endif
 
 #ifdef VM_PRIVATE
 #include "little_endian.h"
diff --git a/src/system4.c b/src/system4.c
index 6f6fd0c..cd9570f 100644
--- a/src/system4.c
+++ b/src/system4.c
@@ -401,11 +401,22 @@ static void windows_error_handler(const char *msg)
 }
 #endif
 
+#ifdef __ANDROID__
+static void android_error_handler(const char *msg)
+{
+	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "xsystem4", msg, NULL);
+}
+#endif
+
 int main(int argc, char *argv[])
 {
 #ifdef _WIN32
 	sys_error_handler = windows_error_handler;
 #endif
+#ifdef __ANDROID__
+	sys_error_handler = android_error_handler;
+#endif
+
 	initialize_instructions();
 	char *ainfile;
 	int err = AIN_SUCCESS;