Player Detection with Events only

[Clad]

Hi
I am starting an action rpg game project and I have a question for Rpgmaker XP:

Enemy will detect if Player is 3 tiles away from it in any direction and will move towards Player if Player is within this range. Like in Secret of Mana, Legend of Mana or Secret of Evermore, when the enemies "sees" the hero at a particular distance, they rush to attack him. Can anyone help on how can I make the Enemy calculates and detects Player? I would like to do this only with Events without any scripts.


Thank you for your help!!

 

[ThallionDarkshine]

Do you need to check for a collision as well as if the player is in the sight range?

 

[Clad]

Yes, a collision is also part of it when the player will touch enemy with his attacks. Thank you!

 

[ThallionDarkshine]

And when the player gets a certain distance away does it need to go back to normal movement? If so, it would be so much easier in a script.

 

[Clad]

the enemy will move at random direction and once player is out of its range, it just stop following player and continue its random movement. Is there a script demo or example that you know of?

 

[ThallionDarkshine]

I made one, but all my progress was lost when my other computer crashed. I'll recreate it for you.

Edit. Here it is:

 

class Game_Event < Game_Player

    alias tdks_orig_init initialize

    def initialize(map_id, event)

        super(map_id, event)

        if @event.name.sub!(/\(chase\, \d+\, \d+\, \d\)/,"")

            @s_range = $1

            @e_range = $2

            @move_change = $3

        elsif @event.name.sub!(/\(chase\, \d+\, \d\)/,"")

            @s_range, @e_range = $1, $1

            @move_change = $2

        end

    end

    

    alias tdks_orig_update update

    def update

        if @move_change and !@stored and @move_type != @move_change

            dx = (@x - $game_player.x).abs

            dy = (@y - $game_player.y).abs

            distance = Math.sqrt(dx ** 2.0 + dy ** 2.0)

            if distance <= @s_range

                @move_type, @stored = @move_change, @move_type

            end

        elsif @move_change and @stored

            dx = (@x - $game_player.x).abs

            dy = (@y - $game_player.y).abs

            distance = Math.sqrt(dx ** 2.0 + dy ** 2.0)

            if distance > @e_range

                @move_type, @stored = @stored, nil

            end

        end

        super

    end

end

 

To use, put:

(chase, range, new_move_type)

in the event name, where range is the range from the player at which the event's movement should change, and new_move_type is the movement type to change to (0 - fixed, 1 - random, 2 - approach player).

 

[Clad]

Thanks for the help! I shall take a look and try to edit it to suit my game. Thank you!