Changing Battle Backgrounds on VX

[Strath]

I'm sure this is a simple thing to do but I can't seem to find the option for it. How do I change the battle backgrounds to relate to the kind of tile you are standing on. eg. a woodland background for forest tiles, plains background for grass tiles, desert for sand etc.

..............?

 

[poccil]

To change the battle background, edit the create_battleback method of Spriteset_Battle.  Here is an example with comments:

class Spriteset_Battle
  def create_battleback
    @battleback_sprite = Sprite.new(@viewport1)
    @battleback_sprite.bitmap = Cache.picture("mybattleback.jpg")
  end
end

However, RPGVX doesn't normally support "terrain tags", which would solve the problem with providing different battle backgrounds depending on where the player is.  (Use my multiple tilesets system for terrain tag support,  see this thread.)

One workaround would be to provide a battle background for each map instead.  Example:

class Spriteset_Battle
  def create_battleback
    mapID=$game_map ? $game_map.map_id : 0
    case mapID
     when 2,3,4 # If map's ID is 2, 3, or 4
       @battleback_sprite = Sprite.new(@viewport1)
       @battleback_sprite.bitmap = Cache.picture("mybattleback1.jpg")
     when 5,6,7 # If map's ID is 5, 6, or 7
       @battleback_sprite = Sprite.new(@viewport1)
       @battleback_sprite.bitmap = Cache.picture("mybattleback2.jpg")
     else # Otherwise
       @battleback_sprite = Sprite.new(@viewport1)
       @battleback_sprite.bitmap = Cache.picture("mybattleback3.jpg")
     end
  end
end

 

[Strath]

Okay sounds straight forward enough. Just a couple of questions.

A) For the first script......Instead of inserting this into the "scripts" section would this work as an event? ie. If I had an enemy "Desert Bandit" could I add the event to their troop encounter so the back would change to a desert setting. Or if the enemy was "Snow leopard" use the script to change to snow back?

B) Does the second script require your download to work or are the maps ID'd as part of the original context of VX?

C) I read the thread on your multiple tilests but didn't quite understand the whole "terrain tags" thing. COuld you please explain what it does?

oh and thanks

 

[poccil]

Both scripts do not require the "multiple tilesets" system.  They just describe different ways to change the battle background.

Each map has its own ID, for example, the map created upon creating a new project has an ID of 1.

A terrain tag is a number assigned to each tile in a tileset.  They are generally used to mark terrain and such.  For example, all desert tiles would have one terrain tag, and all water tiles would have another terrain tag.  Initially, all tiles have a terrain tag of 0.

The following example shows how the battle background can change depending on the troop in the battle:

class Spriteset_Battle
  def create_battleback
    troopID=$game_troop ? $game_troop.troop.id : 0
    background="mybattleback1.jpg"
    case mapID
     when 1 # If troop ID is 1
       background="mybattleback2.jpg"
     when 2,3 # If troop ID is 2 or 3
       background="mybattleback3.jpg"
    end
    @battleback_sprite = Sprite.new(@viewport1)
    @battleback_sprite.bitmap = Cache.picture(background)
  end
end

 

[Strath]

okay thanks alot I think I can work something out now!