[shanapu]

Zombie:Reloaded?

I made this years ago, it's not exactly what you linked, test it.

PHP Code:

#include <sourcemod> 
#include <classzr>

// Compiler Options
#pragma semicolon 1
#pragma newdecls required

int g_iFroggyJumped[MAXPLAYERS + 1];

// Info
public Plugin myinfo = {
    name = "Froggy Jump for Hunter",
    author = "shanapu",
    description = "Add Froggy Jump for Hunter class in Zombie:Reloaded",
    version = "1.0",
    url = "https://github.com/shanapu/"
};

public Action OnPlayerRunCmd(int client, int &buttons, int &impulse, float vel[3], float angles[3], int &weapon)
{
    int classIndex = ZR_GetClassByName("Hunter");
    int clientClass = ZR_GetActiveClass(client); 
    
    int water = GetEntProp(client, Prop_Data, "m_nWaterLevel");
    
    // Last button
    static bool bPressed[MAXPLAYERS+1] = false;
    
    if (IsPlayerAlive(client) && clientClass == classIndex)
    {
        // Reset when on Ground
        if (GetEntityFlags(client) & FL_ONGROUND)
        {
            g_iFroggyJumped[client] = 0;
            bPressed[client] = false;
        }
        else
        {
            // Player pressed jump button?
            if (buttons & IN_JUMP)
            {
                if (water <= 1)
                {
                    if (!(GetEntityMoveType(client) & MOVETYPE_LADDER))
                    {
                        SetEntPropFloat(client, Prop_Send, "m_flStamina", 0.0);
                        if (!(GetEntityFlags(client) & FL_ONGROUND)) buttons &= ~IN_JUMP;
                    }
                }
                                
                // For second time?
                if (!bPressed[client] && g_iFroggyJumped[client]++ == 1)
                {
                    float velocity[3];
                    float velocity0;
                    float velocity1;
                    float velocity2;
                    float velocity2_new;
                    
                    // Get player velocity
                    velocity0 = GetEntPropFloat(client, Prop_Send, "m_vecVelocity[0]");
                    velocity1 = GetEntPropFloat(client, Prop_Send, "m_vecVelocity[1]");
                    velocity2 = GetEntPropFloat(client, Prop_Send, "m_vecVelocity[2]");
                    
                    velocity2_new = 200.0;
                    
                    // calculate new velocity^^
                    if (velocity2 < 150.0) velocity2_new = velocity2_new + 20.0;
                    
                    if (velocity2 < 100.0) velocity2_new = velocity2_new + 30.0;
                    
                    if (velocity2 < 50.0) velocity2_new = velocity2_new + 40.0;
                    
                    if (velocity2 < 0.0) velocity2_new = velocity2_new + 50.0;
                    
                    if (velocity2 < -50.0) velocity2_new = velocity2_new + 60.0;
                    
                    if (velocity2 < -100.0) velocity2_new = velocity2_new + 70.0;
                    
                    if (velocity2 < -150.0) velocity2_new = velocity2_new + 80.0;
                    
                    if (velocity2 < -200.0) velocity2_new = velocity2_new + 90.0;
                    
                    // Set new velocity
                    velocity[0] = velocity0 * 0.1;
                    velocity[1] = velocity1 * 0.1;
                    velocity[2] = velocity2_new;
                    
                    // Double Jump
                    SetEntPropVector(client, Prop_Send, "m_vecBaseVelocity", velocity);
                }
                
                bPressed[client] = true;
            }
            else bPressed[client] = false;
        }
    }
    return Plugin_Continue;
}