//::///////////////////////////////////////////////
//:: OnItemActivate
//:: em_onitmactvt.nss
//:: Copyright (c) 2003 James Robinson. (aka Ryuujin)
//:://////////////////////////////////////////////
/*
    Triggered when a player activates
    a special power item . Determines course
    of action

    Assign this script to the onItemActivate
    slot under "Edit -> Module Properties". If
    You already have a script there, copy/paste
    The below scripts, changing variable names
    appropriatly.
*/
//:://////////////////////////////////////////////
//:: Created By: James Robinson
//:: Created On: June 18 2003
//:://////////////////////////////////////////////

void main()
{
    object oPlayer  = GetItemActivator();
    object oItem    = GetItemActivated();
    string sItem    = GetTag(oItem);

    // BINDSTONE
    // This script handles several functions:
    ////////////////////////////////////////////////////////////////
    //  - Checks if the target is a valid one
    //  - Captures and adds a new creature on failing will save
    //  - Triggers unsummoning if player clicks his own summon
    //  - Applies all related visuals except unsummoning
    ////////////////////////////////////////////////////////////////

    if (sItem   ==  "em_bindstone"){
        // Phew thats a lot of declarations
        object oTarget      = GetItemActivatedTarget();
        location lTarget    = GetItemActivatedTargetLocation();
        string sResRef      = GetLocalString(oItem, "lsResRef");
        string sTrgtRef     = GetResRef(oTarget);
        int iIsPC           = GetIsPC(oTarget);
        int iIsDM           = GetIsDM(oTarget);
        int iEmpathyBonus   = GetSkillRank(SKILL_ANIMAL_EMPATHY, oPlayer);
        int iIsPlot         = GetIsImmune(oTarget, IMMUNITY_TYPE_TRAP);
        int iObjectType     = GetObjectType(oTarget);
        string sMessage     = "ERROR: Script returned false on all sub scripts";
        object oSummon      = GetHenchman(oPlayer);

        // if the player has clicked something besides his summon see if we can catch it
        if (oTarget != oSummon || GetIsObjectValid(oTarget) == FALSE){
            if (sResRef == ""){

                // Error Messages
                if (sTrgtRef == ""){
                    sMessage        = "You missed your target!";
                    ApplyEffectAtLocation(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_COM_SPARKS_PARRY), lTarget, 3.0);
                }
                if ( iIsPC == TRUE || iIsDM == TRUE){ sMessage = "You may not capture Player Controlled creatures"; }
                if ( iIsPlot == TRUE){ sMessage = "Sorry, this creature is part of the plot, I know it's not RP but you're not allowed to capture this guy"; }
                if ( iObjectType != OBJECT_TYPE_CREATURE){ sMessage = "You may only target creatures with a Bindstone"; }

                // We have a winner...
                if (sTrgtRef != "" && iIsDM == FALSE && iIsPC == FALSE && iIsPlot != TRUE && iObjectType == OBJECT_TYPE_CREATURE){
                    int iMaxLife        = GetMaxHitPoints(oTarget);
                    int iCrntLife       = GetCurrentHitPoints(oTarget);
                    int iPercentLeft    = FloatToInt(IntToFloat(iCrntLife) * (100 / IntToFloat(iMaxLife)));
                    int iInverse        = FloatToInt((100 - IntToFloat(iPercentLeft)) / 4);
                    int iSaveThrow      = WillSave(oTarget, iInverse + iEmpathyBonus);

                    // You got it!
                    if (iSaveThrow == FALSE){
                        int iLifeLeft   = iMaxLife - iCrntLife;

                        sMessage            = "You captured a creature!";

                        DestroyObject(oTarget, 0.1);
                        SetLocalString(oItem, "lsResRef", sTrgtRef);
                        SetLocalInt(oItem, "liDamage", iLifeLeft);
                        ApplyEffectAtLocation(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_FNF_PWSTUN), lTarget, 3.0);
                    }

                    // No you didn't....
                    if (iSaveThrow == TRUE){
                        sMessage            = "The creature resisted your attempts of capturing it";

                        ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_IMP_WILL_SAVING_THROW_USE), oTarget);
                    }
                }
            }

            // Summon a new creature only if the bindstone has a creature bound
            if (sResRef != ""){
                object oCreature    = CreateObject(OBJECT_TYPE_CREATURE, sResRef, lTarget);
                int iDmgToApply     = GetLocalInt(oItem, "liDamage");

                // Better unsummon the existing creature pronto
                if (GetIsObjectValid(oSummon) == TRUE){
                    ExecuteScript("em_unsummon", oSummon);
                }

                sMessage            = "Summoning creature...";

                ChangeToStandardFaction(oCreature, STANDARD_FACTION_DEFENDER);                     // Ensure it's on a friendly faction
                DelayCommand(1.0, AddHenchman(oPlayer, oCreature));     // Log it as a henchman
                SetLocalObject(oCreature, "loMyStone", oItem);
                ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectDamage(iDmgToApply), oCreature);       // Apply any damage it had when last unsummoned
                ApplyEffectAtLocation(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_FNF_SUMMON_MONSTER_1), lTarget, 3.0);
                ExecuteScript("em_follow", oPlayer);
            }
        }

        // If player clicks his summon, unsummon it
        if (oTarget == oSummon){
            sMessage        = "";
            ExecuteScript("em_unsummon", oSummon);
        }

        // Display whatever message was stored for the player
        SendMessageToPC(oPlayer, sMessage);
    }



    // BINDSTONE CHARGER
    // Triggers the heal stones script when item is sued
    ////////////////////////////////////////////////////////////////
    if (sItem   ==  "em_charger"){
        ExecuteScript("em_healstones", oPlayer);
    }


    // BINDING CRYSTAL SCRIPT
    // This script has 2 functions:
    ////////////////////////////////////////////////////////////////
    //  - Standard Crystals assign monster based on their tag to bindstone
    //  - Special Crystals assign monster based on local string "lsResRef"
    //  - Crystal will only destroy self if binding is successful
    //  - Crystal tag MUST begin with "bind", any letters after that are the ResRef
    ////////////////////////////////////////////////////////////////
    if (GetStringLeft(GetTag(oItem), 4) == "bind"){
        object oInvItem     = GetFirstItemInInventory(oPlayer);
        int iDoneIt         = FALSE;

        // Check their inventory for an unused Bindstone
        while(GetIsObjectValid(oInvItem) == TRUE && iDoneIt == FALSE){
            int iRightLength    = GetStringLength(GetTag(oItem)) - 4;
            string sItemRef     = GetStringRight(GetTag(oItem), iRightLength);
            string sInvItem     = GetTag(oInvItem);

            // Excellent we got one
            if (sInvItem == "em_bindstone"){
                string sCurrentRef      = GetLocalString(oInvItem, "lsResRef");
                string sExtraRef        = GetLocalString(oItem, "lsResRef");

                if (sExtraRef != ""){
                    sItemRef = sExtraRef;   // If the crystals have their own ref then they must be custom ones.
                }

                if (sCurrentRef == ""){
                    // Take the binding crystal's tag and call that the creature resref
                    SendMessageToPC(oPlayer, "New creature bound to binding stone");
                    SetLocalString(oInvItem, "lsResRef", sItemRef);
                    SetLocalInt(oInvItem, "liDamage", 0);
                    ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_IMP_REDUCE_ABILITY_SCORE), oPlayer);

                    iDoneIt         = TRUE;
                    DestroyObject(oItem);
                }
            }

            oInvItem = GetNextItemInInventory(oPlayer);
        }

        // Um, we checked their whole inventory and got nothing...
        if (iDoneIt == FALSE){
            SendMessageToPC(oPlayer, "You need to have at least 1 Bindstone in your possesion with no creatures bound to it to use this item");
        }
    }
}