Added {get,set}_pdata_cbase{_safe} - compliments Fakemeta's get_pdata functions, but this will set/get an offset that is a CBaseEntity.

Split constants from hamsandwich.inc into ham_const.inc.

Finished commenting native calls, need to finish the constant comments.

dlls/hamsandwich/pdata.cpp

@@ -0,0 +1,116 @@
+#include "sdk/amxxmodule.h"
+#include "offsets.h"
+#include "NEW_Util.h"
+#include "ham_utils.h"
+
+#define FM_CHECK_ENTITY(x) \
+	if (x < 0 || x > gpGlobals->maxEntities) { \
+		MF_LogError(amx, AMX_ERR_NATIVE, "Entity out of range (%d)", x); \
+		return 0; \
+	} else { \
+		if (x <= gpGlobals->maxClients) { \
+			if (!MF_IsPlayerIngame(x)) { \
+				MF_LogError(amx, AMX_ERR_NATIVE, "Invalid player %d (not in-game)", x); \
+				return 0; \
+			} \
+		} else { \
+			if (x != 0 && FNullEnt(INDEXENT(x))) { \
+				MF_LogError(amx, AMX_ERR_NATIVE, "Invalid entity %d", x); \
+				return 0; \
+			} \
+		} \
+	}
+
+// Return -1 on null, -2 on invalid, and the the index of any other.
+static cell AMX_NATIVE_CALL get_pdata_cbase_safe(AMX *amx, cell *params)
+{
+	int index=params[1];
+	FM_CHECK_ENTITY(index);
+	int iOffset=params[2];
+#ifdef __linux__
+	iOffset += params[3];
+#endif
+	if (iOffset <0)
+	{
+		MF_LogError(amx, AMX_ERR_NATIVE, "Invalid offset provided. (got: %d)", iOffset);
+		return 0;
+	}
+	void *ptr=*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset));
+
+	if (ptr == 0)
+	{
+		return -1;
+	}
+
+	for (int i=0; i<gpGlobals->maxEntities; ++i)
+	{
+		if (ptr == INDEXENT_NEW(i)->pvPrivateData)
+		{
+			return i;
+		}
+	}
+
+	return -2;
+}
+static cell AMX_NATIVE_CALL get_pdata_cbase(AMX *amx, cell *params)
+{
+	int index=params[1];
+	FM_CHECK_ENTITY(index);
+	int iOffset=params[2];
+#ifdef __linux__
+	iOffset += params[3];
+#endif
+	if (iOffset <0)
+	{
+		MF_LogError(amx, AMX_ERR_NATIVE, "Invalid offset provided. (got: %d)", iOffset);
+		return 0;
+	}
+	void *ptr=*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset));
+
+	return PrivateToIndex(ptr);
+}
+static cell AMX_NATIVE_CALL set_pdata_cbase(AMX *amx, cell *params)
+{
+	int index=params[1];
+	FM_CHECK_ENTITY(index);
+	int target=params[3];
+
+	if (target != -1)
+	{
+		FM_CHECK_ENTITY(target);
+	}
+	int iOffset=params[2];
+#ifdef __linux__
+	iOffset += params[4];
+#endif
+	if (iOffset <0)
+	{
+		MF_LogError(amx, AMX_ERR_NATIVE, "Invalid offset provided. (got: %d)", iOffset);
+		return 0;
+	}
+
+	if (target == -1)
+	{
+		*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset)) = NULL;
+	}
+	else
+	{
+		*((void **)((int *)INDEXENT_NEW(index)->pvPrivateData + iOffset)) = INDEXENT_NEW(target)->pvPrivateData;
+	}
+
+	return 1;
+}
+
+AMX_NATIVE_INFO pdata_natives_safe[] =
+{
+	{ "get_pdata_cbase_safe",	get_pdata_cbase_safe },
+
+	{ NULL,						NULL }
+};
+AMX_NATIVE_INFO pdata_natives[] =
+{
+	{ "get_pdata_cbase",		get_pdata_cbase },
+	{ "set_pdata_cbase",		set_pdata_cbase },
+
+	{ NULL,						NULL }
+};