Making the Player Jump when a Keyboard Button is Pressed

[bluelink91]

I'm trying to figure out how I can make my player jump whenever a certain key on the keyboard is pressed.
I've set up a common event and have it set to parallel process, which should let this event happen at anytime.
What I've "programmed" is that when the A Button is pressed, it will check which direction the user is facing (through conditional statements) and then make the player jump in that direction.
I've tried this, but somehow it didn't work.
Is there something I did wrong, or should I make a script for this?

 

[Unka Josh]

You didn't post a screenshot of your event system, which would make things easier to diagnose.

However, I'll take a stab at it.

1)  Is this a common event?  If not, it will only work on the maps that the event is on. 

2)  Is the event parallel-process?  If not, it won't work for what you want it to do, period.

3)  Given that you will probably therefore want a parallel-process common event, this will require that a switch be ON.  Does that switch get turned on at some point?  If not, the common event won't process.

4)  ...Don't forget to check "Ignore if Can't Move" in the Set Move Route.

5)  If you plan on using any cutscenes whatsoever, make the switch that activates Jumping be one that you don't mind turning OFF on some occasions-- Setting one Move Route will interrupt another one, so letting the player drop a SMR command in the middle of a cut scene that uses them can have hilariously inappropriate results.

 

[bluelink91]

Sorry for not posting a screenshot, so here's one:
http://img519.imageshack.us/img519/2057/jumpnj6.jpg[/img]

I've tried all of those things and nothing works.  I have a caterpillar script in my game, so I'm wondering if that is causing the problem.

Here's the code:

Spoiler

# Set Switch 13 to "On" to make the catepillar disappear
TRAIN_ACTOR_TRANSPARENT_SWITCH = true
TRAIN_ACTOR_TRANSPARENT_SWITCHES_INDEX = 13
# ------------------------------------
DOWN_LEFT  = 1
DOWN_RIGHT = 3
UP_LEFT    = 7
UP_RIGHT  = 9
JUMP      = 5
# ------------------------------------
class Game_Party_Actor < Game_Character
# ------------------------------------
  def initialize
    super()
    @through = true
  end
# ------------------------------------
  def setup(actor)
    if actor != nil
      @character_name = actor.character_name
      @character_hue = actor.character_hue
    else
      @character_name = ""
      @character_hue = 0
    end
    @opacity = 255
    @blend_type = 0
  end
# ------------------------------------
  def screen_z(height = 0)
    if $game_player.x == @x and $game_player.y == @y
      return $game_player.screen_z(height) - 1
    end
    super(height)
  end
# ------------------------------------  
  def move_down(turn_enabled = true)
    if turn_enabled
      turn_down
    end
    if passable?(@x, @y, Input::DOWN)
      turn_down
      @y += 1
    end
  end
# ------------------------------------ 
  def move_left(turn_enabled = true)
    if turn_enabled
      turn_left
    end
    if passable?(@x, @y, Input::LEFT)
      turn_left
      @x -= 1
    end
  end
# ------------------------------------
  def move_right(turn_enabled = true)
    if turn_enabled
      turn_right
    end
    if passable?(@x, @y, Input::RIGHT)
      turn_right
      @x += 1
    end
  end
# ------------------------------------ 
  def move_up(turn_enabled = true)
    if turn_enabled
      turn_up
    end
    if passable?(@x, @y, Input::UP)
      turn_up
      @y -= 1
    end
  end
# ------------------------------------
  def move_lower_left
    unless @direction_fix
      @direction = (@direction == Input::RIGHT ? Input::LEFT : @direction == Input::UP ? Input::DOWN : @direction)
    end
    if (passable?(@x, @y, Input::DOWN) and passable?(@x, @y + 1, Input::LEFT)) or
      (passable?(@x, @y, Input::LEFT) and passable?(@x - 1, @y, Input::DOWN))
      @x -= 1
      @y += 1
    end
  end
# ------------------------------------ 
  def move_lower_right
    unless @direction_fix
      @direction = (@direction == Input::LEFT ? Input::RIGHT : @direction == Input::UP ? Input::DOWN : @direction)
    end
    if (passable?(@x, @y, Input::DOWN) and passable?(@x, @y + 1, Input::RIGHT)) or
      (passable?(@x, @y, Input::RIGHT) and passable?(@x + 1, @y, Input::DOWN))
      @x += 1
      @y += 1
    end
  end
# ------------------------------------ 
  def move_upper_left
    unless @direction_fix
      @direction = (@direction == Input::RIGHT ? Input::LEFT : @direction == Input::DOWN ? Input::UP : @direction)
    end
    if (passable?(@x, @y, Input::UP) and passable?(@x, @y - 1, Input::LEFT)) or
      (passable?(@x, @y, Input::LEFT) and passable?(@x - 1, @y, Input::UP))
      @x -= 1
      @y -= 1
    end
  end
# ------------------------------------
  def move_upper_right
    unless @direction_fix
      @direction = (@direction == Input::LEFT ? Input::RIGHT : @direction == Input::DOWN ? Input::UP : @direction)
    end
    if (passable?(@x, @y, Input::UP) and passable?(@x, @y - 1, Input::RIGHT)) or
      (passable?(@x, @y, Input::RIGHT) and passable?(@x + 1, @y, Input::UP))
      @x += 1
      @y -= 1
    end
  end
# ------------------------------------
  def set_move_speed(move_speed)
    @move_speed = move_speed
  end
end



class Spriteset_Map
# ------------------------------------
  def setup_actor_character_sprites?
    return @setup_actor_character_sprites_flag != nil
  end
# ------------------------------------
  def setup_actor_character_sprites(characters)
    if !setup_actor_character_sprites?
      index_game_player = 0
      @character_sprites.each_index do |i|
        if @character_sprites[i].character.instance_of?(Game_Player)
          index_game_player = i
          break
        end
      end
      for character in characters.reverse
        @character_sprites.unshift(
          Sprite_Character.new(@viewport1, character)
        )
      end
      @setup_actor_character_sprites_flag = true
    end
  end
end



class Scene_Map
# ------------------------------------
  def setup_actor_character_sprites(characters)
    @spriteset.setup_actor_character_sprites(characters)
  end
end



class Game_Party
# ------------------------------------
  def set_transparent_actors(transparent)
    @transparent = transparent
  end
# ------------------------------------
  def setup_actor_character_sprites
    if @characters == nil
      @characters = []
      for i in 1 .. 4
        @characters.push(Game_Party_Actor.new)
      end
    end
    if @actors_chach == nil
      @actors_chach = []
    end
    if @actors_chach != @actors
      @actors_chach = @actors.clone
      for i in 1 .. 4
        @characters[i - 1].setup(actors[i])
      end
    end
    if $scene.instance_of?(Scene_Map)
      $scene.setup_actor_character_sprites(@characters)
    end
  end
# ------------------------------------
  def update_party_actors
    setup_actor_character_sprites
    transparent = $game_player.transparent
    if transparent == false
      if TRAIN_ACTOR_TRANSPARENT_SWITCH
        transparent = $game_switches[TRAIN_ACTOR_TRANSPARENT_SWITCHES_INDEX]
      else
        transparent = $game_player.transparent
      end
    end
    for character in @characters
      character.transparent = transparent
      character.set_move_speed($game_player.get_move_speed)
      character.update
    end
  end
# ------------------------------------
  def moveto_party_actors( x, y )
    setup_actor_character_sprites
    for character in @characters
      character.moveto( x, y )
    end
    if @move_list == nil
      @move_list = []
    end
    for i in 0 .. 10
      @move_list[i] = nil
    end
  end
  def move_party_actors
    if @move_list == nil
      @move_list = []
      for i in 0 .. 10
        @move_list[i] = nil
      end
    end
    @move_list.each_index do |i|
      if @characters[i] != nil
        case @move_list[i].type
          when Input::DOWN
            @characters[i].move_down(@move_list[i].args[0])
          when Input::LEFT
            @characters[i].move_left(@move_list[i].args[0])
          when Input::RIGHT
            @characters[i].move_right(@move_list[i].args[0])
          when Input::UP
            @characters[i].move_up(@move_list[i].args[0])
          when DOWN_LEFT
            @characters[i].move_lower_left
          when DOWN_RIGHT
            @characters[i].move_lower_right
          when UP_LEFT
            @characters[i].move_upper_left
          when UP_RIGHT
            @characters[i].move_upper_right
          when JUMP
            @characters[i].jump(@move_list[i].args[0],@move_list[i].args[1])
        end
      end
    end
  end



 class Move_List_Element
# ------------------------------------
    def initialize(type,args)
      @type = type
      @args = args
    end
    def type() return @type end
    def args() return @args end
  end
# ------------------------------------
  def add_move_list(type,*args)
    @move_list.unshift(Move_List_Element.new(type,args)).pop
  end
# ------------------------------------
  def move_down_party_actors(turn_enabled = true)
    move_party_actors
    add_move_list(Input::DOWN,turn_enabled)
  end
# ------------------------------------
  def move_left_party_actors(turn_enabled = true)
    move_party_actors
    add_move_list(Input::LEFT,turn_enabled)
  end
# ------------------------------------
  def move_right_party_actors(turn_enabled = true)
    move_party_actors
    add_move_list(Input::RIGHT,turn_enabled)
  end
# ------------------------------------
  def move_up_party_actors(turn_enabled = true)
    move_party_actors
    add_move_list(Input::UP,turn_enabled)
  end
# ------------------------------------
  def move_lower_left_party_actors
    move_party_actors
    add_move_list(DOWN_LEFT)
  end
# ------------------------------------
  def move_lower_right_party_actors
    move_party_actors
    add_move_list(DOWN_RIGHT)
  end
# ------------------------------------
  def move_upper_left_party_actors
    move_party_actors
    add_move_list(UP_LEFT)
  end
# ------------------------------------
  def move_upper_right_party_actors
    move_party_actors
    add_move_list(UP_RIGHT)
  end
# ------------------------------------
  def jump_party_actors(x_plus, y_plus)
    move_party_actors
    add_move_list(JUMP,x_plus, y_plus)
  end
end



module Game_Player_Module
# ------------------------------------
  def update
    $game_party.update_party_actors
    super
  end
# ------------------------------------
  def moveto( x, y )
    super
    $game_party.moveto_party_actors( x, y )
  end
# ------------------------------------
  def move_down(turn_enabled = true)
    if passable?(@x, @y, Input::DOWN)
      $game_party.move_down_party_actors(turn_enabled)
    end
    super(turn_enabled)
  end
# ------------------------------------
  def move_left(turn_enabled = true)
    if passable?(@x, @y, Input::LEFT)
      $game_party.move_left_party_actors(turn_enabled)
    end
    super(turn_enabled)
  end
# ------------------------------------
  def move_right(turn_enabled = true)
    if passable?(@x, @y, Input::RIGHT)
      $game_party.move_right_party_actors(turn_enabled)
    end
    super(turn_enabled)
  end
# ------------------------------------
  def move_up(turn_enabled = true)
    if passable?(@x, @y, Input::UP)
      $game_party.move_up_party_actors(turn_enabled)
    end
    super(turn_enabled)
  end
# ------------------------------------
  def move_lower_left
    if (passable?(@x, @y, Input::DOWN) and passable?(@x, @y + 1, Input::LEFT)) or
      (passable?(@x, @y, Input::LEFT) and passable?(@x - 1, @y, Input::DOWN))
      $game_party.move_lower_left_party_actors
    end
    super
  end
# ------------------------------------
  def move_lower_right
    if (passable?(@x, @y, Input::DOWN) and passable?(@x, @y + 1, Input::RIGHT)) or
      (passable?(@x, @y, Input::RIGHT) and passable?(@x + 1, @y, Input::DOWN))
      $game_party.move_lower_right_party_actors
    end
    super
  end
# ------------------------------------
  def move_upper_left
    if (passable?(@x, @y, Input::UP) and passable?(@x, @y - 1, Input::LEFT)) or
      (passable?(@x, @y, Input::LEFT) and passable?(@x - 1, @y, Input::UP))
      $game_party.move_upper_left_party_actors
    end
    super
  end
# ------------------------------------
  def move_upper_right
    if (passable?(@x, @y, Input::UP) and passable?(@x, @y - 1, Input::RIGHT)) or
      (passable?(@x, @y, Input::RIGHT) and passable?(@x + 1, @y, Input::UP))
      $game_party.move_upper_right_party_actors
    end
    super
  end
# ------------------------------------
  def jump(x_plus, y_plus)
    new_x = @x + x_plus
    new_y = @y + y_plus
    if (x_plus == 0 and y_plus == 0) or passable?(new_x, new_y, 0)
      $game_party.jump_party_actors(x_plus, y_plus)
    end
    super(x_plus, y_plus)
  end
# ------------------------------------
 def get_move_speed
    return @move_speed
  end
end



class Game_Player
  include Game_Player_Module
end

 

[Unka Josh]

I'm not script-savvy enough to evaluate whether or not your caterpillar script is the problem, but if Switch 0001 is ON, then that can be the only source of this problem that I can see.

 

[bluelink91]

Found out part of the problem: you have to enter another area for the common event to take effect.
A new problem has arisen though; when I face left or right, I double jump in that direction and when I face either up or down, I jump up two and then down two.  Why this happens, I have no idea.

 

[xgamexfreakx]

I would suggest adding a 1 frame wait in each of your commands. It sound's like your commands are being input twice because of how fast the system is run through. It takes time to update on screen, but it puts what next to do inside a registry for later use (the next command) with something like a parallel process. I'm pretty sure a 1 frame wait after each of the jump commands aught to fix your problem.

Hope this helps!
~xgamexfreakx