Edit: Thanks, IneedHelp ;)
Direct port:
PHP Code:
set_pev(id, pev_fuser2, 0.0)
if(pev(id, pev_button) & 2)
{
new flags = pev(id, pev_flags)
if(flags & FL_WATERJUMP)
return PLUGIN_CONTINUE
if(pev(id, pev_waterlevel) >= 2)
return PLUGIN_CONTINUE
if(!(flags & FL_ONGROUND))
return PLUGIN_CONTINUE
new Float:velocity[3]
pev(id, pev_velocity, velocity)
velocity[2] += 260.0
set_pev(id, pev_velocity, velocity)
set_pev(id, pev_gaitsequence, 6)
}