Added stock functions CWAPI_CheckVersion & CWAPI_GetVersion

Examples:
CWAPI_CheckVersionV1(0.6.0) will return true if CWAPI version is 0.6.0 or above.
CWAPI_CheckVersionV2(0.6.0, 0.7.0) will return true if CWAPI version between 0.6.0 and 0.7.0.

CustomWeaponsAPI.sma

@@ -19,6 +19,8 @@
 #define IsWeaponSilenced(%0) bool:((WPNSTATE_M4A1_SILENCED|WPNSTATE_USP_SILENCED)&get_member(%0,m_Weapon_iWeaponState))
 #define IsPistol(%0) (WEAPON_PISTOLS_BITSUMM&BIT(rg_get_iteminfo(%0,ItemInfo_iId)))
 #define IsGrenade(%0) (equal(%0, "hegrenade") || equal(%0, "smokegrenade") || equal(%0, "flashbang"))
+new const _STR_NUM[] = "%d";
+#define IntToStr(%0) fmt(_STR_NUM,%0)
 
 enum {
     CWAPI_ERR_UNDEFINED_EVENT = 0,
@@ -44,7 +46,7 @@ new Fwds[E_Fwds];
 new UserMsgs[E_UserMsgs];
 
 new const PLUG_NAME[] = "Custom Weapons API";
-new const PLUG_VER[] = "0.6.0-beta";
+#define PLUG_VER CWAPI_VERSION
 
 public plugin_init(){
     register_dictionary("cwapi.txt");
@@ -71,13 +73,13 @@ public plugin_init(){
 
     UserMsgs[UM_WeaponList] = get_user_msgid("WeaponList");
 
-    create_cvar("CWAPI_VERSION", PLUG_VER, FCVAR_SERVER);
-
     server_print("[%s v%s] loaded.", PLUG_NAME, PLUG_VER);
 }
 
 public plugin_precache(){
     register_plugin(PLUG_NAME, PLUG_VER, "ArKaNeMaN");
+    create_cvar(CWAPI_VERSION_CVAR, PLUG_VER, FCVAR_SERVER);
+    create_cvar(CWAPI_VERSION_NUM_CVAR, IntToStr(CWAPI_VERSION_NUM), FCVAR_SERVER);
 
     InitForwards();
     LoadWeapons();
@@ -88,7 +90,7 @@ public plugin_precache(){
 }
 
 public plugin_natives(){
-    register_library("CustomWeaponsAPI");
+    register_library(CWAPI_LIBRARY);
 
     register_native("CWAPI_RegisterHook", "Native_RegisterHook");
     register_native("CWAPI_AddCustomWeapon", "Native_AddCustomWeapon");

include/cwapi.inc

@@ -3,6 +3,20 @@
 #endif
 #define _cwapi_included
 
+#define CWAPI_VER_MAJOR 0
+#define CWAPI_VER_MINOR 7
+#define CWAPI_VER_PATCH 0
+
+#define CWAPI_VER_TO_STR(%1.%2.%3) fmt("%d.%d.%d",%1,%2,%1)
+#define CWAPI_VER_TO_NUM(%1.%2.%3) ((%1*10000)+(%2*100)+%3)
+
+#define CWAPI_VERSION CWAPI_VER_TO_STR(CWAPI_VER_MAJOR.CWAPI_VER_MINOR.CWAPI_VER_PATCH)
+#define CWAPI_VERSION_NUM CWAPI_VER_TO_NUM(CWAPI_VER_MAJOR.CWAPI_VER_MINOR.CWAPI_VER_PATCH)
+
+stock const CWAPI_LIBRARY[] = "CustomWeaponsAPI";
+stock const CWAPI_VERSION_CVAR[] = "CWAPI_VERSION";
+stock const CWAPI_VERSION_NUM_CVAR[] = "CWAPI_VERSION_NUM";
+
 #define CWAPI_IMPULSE_OFFSET 4354
 #define var_CWAPI_ItemOwner var_iuser4
 
@@ -331,4 +345,41 @@ stock CWAPI_GetAbilParamString(Trie:Params, const Name[], Out[], Len, const Defa
     if(Params == Invalid_Trie || !TrieGetString(Params, Name, Out, Len))
         copy(Out, Len, Default);
     return strlen(Out);
+}
+
+/**
+ * Проверяет наличие запущенного CustomWeaponsAPI и его версию.
+ *
+ * @note Если оба параметра не указаны, то будет проверено только наличие плагина.
+ *
+ * @param Min    Минимальная версия.
+ * @param Max    Максимальная версия.
+ *
+ * @return  true, если CWAPI запущен и текущая версия входит в указанный диапазон.
+ */
+stock bool:CWAPI_CheckVersion(const Min = -1, const Max = -1){
+    if(!LibraryExists(CWAPI_LIBRARY, LibType_Library))
+        return false;
+
+    new CurVer = CWAPI_GetVersion();
+    if(
+        (Min != -1 && CurVer < Min)
+        || (Max != -1 && CurVer > Max)
+    ) return false;
+
+    return true;
+}
+#define CWAPI_CheckVersionV1(%1) CWAPI_CheckVersion(CWAPI_VER_TO_NUM(%1))
+#define CWAPI_CheckVersionV2(%1,%2) CWAPI_CheckVersion(CWAPI_VER_TO_NUM(%1),CWAPI_VER_TO_NUM(%2))
+
+/**
+ * Возвращает текущую версию Custom Weapons API
+ *
+ * @return Значение CWAPI_VERSION_NUM с которым был скомпилирован CWAPI
+ */
+stock CWAPI_GetVersion(){
+    static pCvar;
+    if(!pCvar)
+        pCvar = get_cvar_pointer(CWAPI_VERSION_NUM_CVAR);
+    return get_pcvar_num(pCvar);
 }