Simple Param Mod Tutorial

This tutorial assumes you understand at least the basics of RGSS coding. Such as aliasing methods, classes, variables, etc..

Step 1 ::

Grab the class and any methods you need to modify. In this case, that would be Game_Actor and the method ‘param’ – which determines the param value. So, we would write this code… (or something highly similar)

#===============================================================================
class Game_Actor
#===============================================================================
  #-----------------------------------------------------------------------------
  # List Of Aliased Methods
  #-----------------------------------------------------------------------------
  alias :dekita_param_mod_tutorial :param
  #-----------------------------------------------------------------------------
  # Method to determine value of actors params
  #-----------------------------------------------------------------------------
  def param(param_id)
    dekita_param_mod_tutorial(param_id)
  end   
end

All this code does it alias the current ‘param’ method and then calls the aliased method whenever param is called. This is the most basic way of ensuring that the old method is not fully overwritten.

Step 2 ::

Now, we can add a way for the param value to be modified by a variable…

  #-----------------------------------------------------------------------------
  #
  #-----------------------------------------------------------------------------
  def param(param_id)
    ( dekita_param_mod_tutorial(param_id) * $game_variables[VARIABLE_ID] ).to_i
  end

See what I did there?

Because I know that the old method for ‘param’ will return an integer value all I have to do is multiply that value by the value stored in my variable. Lets say in this case the variable is equal to ‘1.5’, this means all stats will be multiplied by 1.5.

Then, because we dont want float numbers for our params (numbers with a decimal point such as 1.234), instead we want nice round integers (such as 1,2,3,4..) I enclosed the formula (old method * variable value) within brackets ‘( )’ and then added an additional method onto the end. ‘.to_i’  will ensure that the code is going to return an integer value.

 

And thats it done.

Obviously, you can start getting ‘more creative’ and maybe create a class or module to determine how the param is going to be modified. Hell, you could end up doing what I did and create about 30 scripts that modify the ‘param’ method to determine the value.