From bdf7350468414e0fd45e568613497044bb7649d8 Mon Sep 17 00:00:00 2001
From: RD42 <42702181+dashr9230@users.noreply.github.com>
Date: Thu, 11 Apr 2024 22:16:05 +0800
Subject: [PATCH] [server] Implement script core functions

---
 server/scrcore.cpp   | 166 +++++++++++++++++++++++++++++++++++++++++++
 server/server.vcproj |   3 +
 2 files changed, 169 insertions(+)
 create mode 100644 server/scrcore.cpp

diff --git a/server/scrcore.cpp b/server/scrcore.cpp
new file mode 100644
index 0000000..8606615
--- /dev/null
+++ b/server/scrcore.cpp
@@ -0,0 +1,166 @@
+
+#include "main.h"
+#include <ctype.h>
+#include "format.h"
+
+//----------------------------------------------------------------------------------
+
+int AMXAPI aux_LoadProgram(AMX* amx, char* filename)
+{
+	FILE* fp;
+	if ((fp = fopen(filename, "rb")) == NULL)
+	{
+		return AMX_ERR_NOTFOUND;
+	}
+	AMX_HEADER hdr;
+	fread(&hdr, sizeof hdr, 1, fp);
+	amx_Align16(&hdr.magic);
+	amx_Align32((uint32_t *)&hdr.size);
+	amx_Align32((uint32_t *)&hdr.stp);
+
+	if (hdr.magic != AMX_MAGIC)
+	{
+		fclose(fp);
+		return AMX_ERR_FORMAT;
+	}
+
+	void* memblock;
+	if ((memblock = malloc(hdr.stp)) == NULL)
+	{
+		fclose(fp);
+		return AMX_ERR_MEMORY;
+	}
+
+	rewind(fp);
+	fread(memblock, 1, (size_t)hdr.size, fp);
+	fclose(fp);
+
+	//amx_SetDebugHook(amx, (AMX_DEBUG)amx_Debug);
+	memset(amx, 0, sizeof(*amx));
+	int result = amx_Init(amx, memblock);
+	if (result != AMX_ERR_NONE)
+	{
+		free(memblock);
+		amx->base = NULL;
+	}
+	return result;
+}
+
+//----------------------------------------------------------------------------------
+
+int AMXAPI aux_LoadProgramFromMemory(AMX* amx, char* filedata)
+{
+	AMX_HEADER hdr;
+
+	memcpy(&hdr, filedata, sizeof hdr);
+
+	amx_Align16(&hdr.magic);
+	amx_Align32((uint32_t *)&hdr.size);
+	amx_Align32((uint32_t *)&hdr.stp);
+
+	if (hdr.magic != AMX_MAGIC)
+	{
+		return AMX_ERR_FORMAT;
+	}
+
+	void* memblock;
+	if ((memblock = malloc(hdr.stp)) == NULL)
+	{
+		return AMX_ERR_MEMORY;
+	}
+
+	memcpy(memblock, filedata, (size_t)hdr.size);
+
+	//amx_SetDebugHook(amx, (AMX_DEBUG)amx_Debug);
+	memset(amx, 0, sizeof(*amx));
+	int result = amx_Init(amx, memblock);
+	if (result != AMX_ERR_NONE)
+	{
+		free(memblock);
+		amx->base = NULL;
+	}
+	return result;
+}
+
+//----------------------------------------------------------------------------------
+
+int AMXAPI aux_FreeProgram(AMX *amx)
+{
+	if (amx->base != NULL)
+	{
+		amx_Cleanup(amx);
+		free(amx->base);
+		memset(amx, 0, sizeof(AMX));
+	}
+	return AMX_ERR_NONE;
+}
+
+//----------------------------------------------------------------------------------
+
+char * AMXAPI aux_StrError(int errnum)
+{
+	static char *messages[] = {
+		/* AMX_ERR_NONE      */ "(none)",
+		/* AMX_ERR_EXIT      */ "Forced exit",
+		/* AMX_ERR_ASSERT    */ "Assertion failed",
+		/* AMX_ERR_STACKERR  */ "Stack/heap collision (insufficient stack size)",
+		/* AMX_ERR_BOUNDS    */ "Array index out of bounds",
+		/* AMX_ERR_MEMACCESS */ "Invalid memory access",
+		/* AMX_ERR_INVINSTR  */ "Invalid instruction",
+		/* AMX_ERR_STACKLOW  */ "Stack underflow",
+		/* AMX_ERR_HEAPLOW   */ "Heap underflow",
+		/* AMX_ERR_CALLBACK  */ "No (valid) native function callback",
+		/* AMX_ERR_NATIVE    */ "Native function failed",
+		/* AMX_ERR_DIVIDE    */ "Divide by zero",
+		/* AMX_ERR_SLEEP     */ "(sleep mode)",
+		/* 13 */                "(reserved)",
+		/* 14 */                "(reserved)",
+		/* 15 */                "(reserved)",
+		/* AMX_ERR_MEMORY    */ "Out of memory",
+		/* AMX_ERR_FORMAT    */ "Invalid/unsupported P-code file format",
+		/* AMX_ERR_VERSION   */ "File is for a newer version of the AMX",
+		/* AMX_ERR_NOTFOUND  */ "File or function is not found",
+		/* AMX_ERR_INDEX     */ "Invalid index parameter (bad entry point)",
+		/* AMX_ERR_DEBUG     */ "Debugger cannot run",
+		/* AMX_ERR_INIT      */ "AMX not initialized (or doubly initialized)",
+		/* AMX_ERR_USERDATA  */ "Unable to set user data field (table full)",
+		/* AMX_ERR_INIT_JIT  */ "Cannot initialize the JIT",
+		/* AMX_ERR_PARAMS    */ "Parameter error",
+		};
+	if (errnum < 0 || errnum >= sizeof messages / sizeof messages[0])
+		return "(unknown)";
+	return messages[errnum];
+}
+
+//----------------------------------------------------------------------------------
+
+void AMXPrintError(CGameMode* pGameMode, AMX *amx, int error)
+{
+	if (error != AMX_ERR_NONE)
+	{
+		logprintf("Script[%s]: Run time error %d: \"%s\"",// on line %ld\n",
+			pGameMode->GetFileName(), error, aux_StrError(error));//, (long)amx->curline);
+	}
+}
+
+//----------------------------------------------------------------------------------
+
+cell* get_amxaddr(AMX *amx,cell amx_addr)
+{
+  return (cell *)(amx->base + (int)(((AMX_HEADER *)amx->base)->dat + amx_addr));
+}
+
+//----------------------------------------------------------------------------------
+
+int set_amxstring(AMX *amx,cell amx_addr,const char *source,int max)
+{
+  cell* dest = (cell *)(amx->base + (int)(((AMX_HEADER *)amx->base)->dat + amx_addr));
+  cell* start = dest;
+  while (max--&&*source)
+    *dest++=(cell)*source++;
+  *dest = 0;
+  return dest-start;
+}
+
+//----------------------------------------------------------------------------------
+
diff --git a/server/server.vcproj b/server/server.vcproj
index b24362e..4795790 100644
--- a/server/server.vcproj
+++ b/server/server.vcproj
@@ -331,6 +331,9 @@
 			<File
 				RelativePath=".\gamemodes.h">
 			</File>
+			<File
+				RelativePath=".\scrcore.cpp">
+			</File>
 			<File
 				RelativePath=".\scrcustom.cpp">
 			</File>