Hook touching weaponbox/armoury_entity using ReAPI

[Raheem]

Hello,

In this topic i'll show you how can you detect the touching of weaponbox/armoury_entity event using ReAPI hookchains.

1. You need to register the hookchain:

• Code: [Select all] [Expand/Collapse]

  1. RegisterHookChain(RG_CBasePlayer_HasRestrictItem, "Fw_HasRestrictItem_Pre", 0)

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- When this function called HasRestrictItem?

• It's called in 3 events:
  1. When a player buying items.
  2. When the player touches with a weaponbox or armoury_entity.
  3. When a entity game_player_equip to player gives item.

- We are interested in: When the player touches with a weaponbox or armoury_entity.

- You can note that i registred the hookchain in pre case, so we can control the return value and be able to block the pickup event.

2. Let's discuss Fw_HasRestrictItem_Pre header:

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  1. public Fw_HasRestrictItem_Pre(id, ItemID:iItem, ItemRestType:iType)

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- id --> is the player who touched the weaponbox or armoury_entity.
- iItem --> The item that player touched (It's in cssdk_const.inc)

• Code: [Select all] [Expand/Collapse]

  1. /**
  2. * Constant items
  3. */
  4. enum ItemID
  5. {
  6.     ITEM_NONE = -1,
  7.     ITEM_SHIELDGUN,
  8.     ITEM_P228,
  9.     ITEM_GLOCK,
  10.     ITEM_SCOUT,
  11.     ITEM_HEGRENADE,
  12.     ITEM_XM1014,
  13.     ITEM_C4,
  14.     ITEM_MAC10,
  15.     ITEM_AUG,
  16.     ITEM_SMOKEGRENADE,
  17.     ITEM_ELITE,
  18.     ITEM_FIVESEVEN,
  19.     ITEM_UMP45,
  20.     ITEM_SG550,
  21.     ITEM_GALIL,
  22.     ITEM_FAMAS,
  23.     ITEM_USP,
  24.     ITEM_GLOCK18,
  25.     ITEM_AWP,
  26.     ITEM_MP5N,
  27.     ITEM_M249,
  28.     ITEM_M3,
  29.     ITEM_M4A1,
  30.     ITEM_TMP,
  31.     ITEM_G3SG1,
  32.     ITEM_FLASHBANG,
  33.     ITEM_DEAGLE,
  34.     ITEM_SG552,
  35.     ITEM_AK47,
  36.     ITEM_KNIFE,
  37.     ITEM_P90,
  38.     ITEM_NVG,
  39.     ITEM_DEFUSEKIT,
  40.     ITEM_KEVLAR,
  41.     ITEM_ASSAULT,
  42.     ITEM_LONGJUMP,
  43.     ITEM_SODACAN,
  44.     ITEM_HEALTHKIT,
  45.     ITEM_ANTIDOTE,
  46.     ITEM_BATTERY
  47. };

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- iType --> The type of event (Buy, touch, or equip? can be found in cssdk_const.inc)

• Code: [Select all] [Expand/Collapse]

  1. /**
  2. * For RG_CBasePlayer_HasRestrictItem
  3. */
  4. enum ItemRestType
  5. {
  6.     ITEM_TYPE_BUYING,  // When a player is buying items
  7.     ITEM_TYPE_TOUCHED, // When the player touches a weaponbox or armoury_entity
  8.     ITEM_TYPE_EQUIPPED // When an entity game_player_equip gives item to player or default items on player spawn
  9. };

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3. You can block any item pickup:

- Code to block pickup HE Grenade:

• Code: [Select all] [Expand/Collapse]

  1. #include <amxmodx>
  2. #include <reapi>
  3.  
  4. #define ITEM_TO_BLOCK ITEM_HEGRENADE
  5.  
  6. public plugin_init()
  7. {
  8.     register_plugin("Block HE Grenade Pickup", "1.0", "Raheem")
  9.    
  10.     /*
  11.     *   This can hook 3 types of events:
  12.     *
  13.     *   1. When a player buying items.
  14.     *   2. When the player touches with a weaponbox or armoury_entity.
  15.     *   3. When a entity game_player_equip to player gives item.
  16.     */
  17.     RegisterHookChain(RG_CBasePlayer_HasRestrictItem, "Fw_HasRestrictItem_Pre", 0)
  18. }
  19.  
  20. /*
  21. *   id - Player index
  22. *   iItem - Item id (It's ITEM_NONE, ITEM_SHIELDGUN and etc...)
  23. *   iType:
  24. *           0 = ITEM_TYPE_BUYING    // When a player buying items.
  25. *           1 = ITEM_TYPE_TOUCHED   // When the player touches with a weaponbox or armoury_entity.
  26. *           2 = ITEM_TYPE_EQUIPPED  // When a entity game_player_equip to player gives item.
  27. *
  28. *   You can find in cssdk_const.inc enum ItemRestType
  29. *   Check also enum ItemID for weapons ids
  30. */  
  31. public Fw_HasRestrictItem_Pre(id, ItemID:iItem, ItemRestType:iType)
  32. {
  33.     // Hook only player touching
  34.     if (iType == ITEM_TYPE_TOUCHED)
  35.     {
  36.         // Check if player not VIP and iItem is Armor
  37.         if (iItem == ITEM_TO_BLOCK)
  38.         {
  39.             // Print center message and exist from the real function, no give
  40.             client_print(id, print_center, "You can't pickup HE grenade!")
  41.            
  42.             // Set the hookchain return (must set the return, if you just returned HC_SUPERCEDE it will not work)
  43.             SetHookChainReturn(ATYPE_BOOL, HC_SUPERCEDE) // HC_SUPERCEDE = true
  44.            
  45.             // Useless to use return, we already returned using SetHookChainReturn
  46.             //return HC_SUPERCEDE
  47.         }
  48.     }
  49.    
  50.     // No problem with this, will work normally
  51.     return HC_CONTINUE
  52. }

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IMPORTANT: Please use SetHookChainReturn() to return HC_SUPERCEDE, and don't use return HC_SUPERCEDE. For HC_CONTINUE use it normally like: return HC_CONTINUE.

BLOCKED?

• 

That's ALL, hope you find this useful. Any problem comment down

[z0h1r-LK]

Nice tutorial ♥