Skyboost

#pragma semicolon 1

#include <sourcemod>
#include <sdktools>
#include <cstrike>
#include <sdkhooks>

#define LoopIngameClients(%1) for(int %1=1;%1<=MaxClients;++%1)\
        if(IsClientInGame(%1))

#define BOOSTER_MIN_SPEED 5.0
#define BOOSTED_MAX_SPEED -5.0
#define BOOST_SPEED 600.0

#define HEIGHT_DIFF 61.0
#define HEIGHT_DIFF_DUCKED 45.0

public Plugin myinfo =
{
        name = "Skyboost",
        author = "Zipcore",
        description = "Skyboost for trikz",
        version = "1.0",
        url = "zipcore#googlemail.com"
};

public void OnPluginStart()
{
        LoopIngameClients(i)
        OnClientPutInServer(i);
}

public OnClientPutInServer(int client)
{
    SDKHook(client, SDKHook_StartTouch, OnStartTouch);
}

public Action OnStartTouch(int client, int other)
{
        // client = upper player
        // other = boosting player

        //Player touched another player
    if(other > 0 && other <= MaxClients)
    {
                // Are players alive?
                if(!IsClientInGame(client) || !IsPlayerAlive(client))
                        return Plugin_Continue;

                if(!IsClientInGame(other) || !IsPlayerAlive(other))
                        return Plugin_Continue;

                float cPos[3];
                GetClientAbsOrigin(client, cPos);

                float oPos[3];
                GetClientAbsOrigin(other, oPos);

                // Check Height Diff
                float HeightDiff = cPos[2] - oPos[2];

                //Diff smaller as possible with duck
                if (HeightDiff <= 45.0)
                        return Plugin_Continue;

                // Diff smaler as possible without duck
                if (HeightDiff <= 61.0 && !(GetClientButtons(other) & IN_DUCK))
                        return Plugin_Continue;

                float cVel[3];
                GetEntPropVector(client, Prop_Data, "m_vecAbsVelocity", cVel);

                float oVel[3];
                GetEntPropVector(other, Prop_Data, "m_vecAbsVelocity", oVel);

                // Is player falling fast enought?
                if(cVel[2] > BOOSTED_MAX_SPEED)
                        return Plugin_Continue;

                // Is player jumping fast enought?
                if (oVel[2] < BOOSTER_MIN_SPEED)
                        return Plugin_Continue;

                // Boost player
                cVel[2] = BOOST_SPEED;
                TeleportEntity(client, NULL_VECTOR, NULL_VECTOR, cVel);
    }

    return Plugin_Continue;
}