Messages

To begin with, this issue does not affect the game play at all and everything works. It is just an annoying warning.

I have this code on a different map.

Code ( lua) Select Expand

  function slime:on_removed()
    bookcase:set_enabled(false)
  end

When I leave the map and go to a different map, I get a warning from the previous map: (I checked and "bookcase" does not exist on the new map.)

Code Select Expand

Error: In on_removed: [string "maps/chain_village/zark_house.lua"]:17: attempt to index global 'bookcase' (a nil value)

Please note: I did not remove the bookcase and it does the same thing when I tested it with a chest entity.

Code ( lua) Select Expand

function slime:on_removed()   
    if not chest:is_open() then
      sol.audio.play_sound("secret")
    end
end

Code Select Expand

Error: In on_removed: [string "maps/chain_village/zark_house.lua"]:21: attempt to index global 'chest' (a nil value)


I get around the warning by using a save variable.

Code ( lua) Select Expand

  function slime:on_removed()
    if not game:get_value("zark_house_enemy_defeated") == true then
      bookcase:set_enabled(false)
    end
   
    if not game:get_value("zark_house_enemy_defeated") == true then
      if not chest:is_open() then
        sol.audio.play_sound("secret")
      end
    end

    game:set_value("zark_house_enemy_defeated",true)
  end

@Christopho
No loop, but it seems the "opening" frame delay was the problem. The frame delay was at: 0 ms

It works now. Thank you Christopho!

Well, this is just a hunch, but did you check the project_db.dat?

They probably still exist there if you did not delete the sounds from the editor.

I am pretty sure. Here is an image to prove it. I made sure all the animations existed as stated in the documentation.



Also, I mentioned the function door:is_opening() working.

Code ( lua) Select Expand

 
sol.timer.start(1000, function()
  if door_1:is_opening() == true then
    hero:teleport("chain_village/underground_miniboss", "boss_destination", "fade")
  end
  return true
end)


Version: Solarus 1.5.3
OS: Linux

This might be a bug?

I tried using door:on_opened(), but it seems to not be working. I double checked the name and everything. This function is called during an opening of a door, right?

Code ( lua) Select Expand

function door_1:on_opened()
  print("opened door")
  hero:teleport("chain_village/underground_miniboss", "boss_destination", "fade")
end

The same occurred with door:is_open(). The door is indeed open, but nothing happens.

Code ( lua) Select Expand

 
sol.timer.start(1000, function()
  if door_1:is_open() == true then
    hero:teleport("chain_village/underground_miniboss", "boss_destination", "fade")
  end
  return true
end)


The function door:is_opening() worked.

Code ( lua) Select Expand

 
sol.timer.start(1000, function()
  if door_1:is_opening() == true then
    hero:teleport("chain_village/underground_miniboss", "boss_destination", "fade")
  end
  return true
end)


[Added:]

Added:
GrafX2 - It has unique tools for creating pixel art. It is available for many platforms including Android and Linux. YouTube Tutorials

News:
June 18, 2017 - GraphicsGale became a freeware!

@Diarandor
Thank you for pointing me to the function map.get_entities_by_type(type).

I just have to say Solarus is spectacular. It was really that simple. Here is a little working piece of code.

Code ( lua) Select Expand

sol.timer.start(1000, function()
for bomb in map:get_entities_by_type("bomb") do
  if bomb:overlaps(test) then
    test:set_enabled(false)
  end
end
  return true
end)

Would it be possible to pass more than one entity through a method?

For example,

Code ( lua) Select Expand

entity:overlaps(entity)

Code ( lua) Select Expand

map:get_entites("bomb"):overlaps(test)

Oh, this is a little hilarious. I forgot to add a name to the created entity. It works now.

Code ( lua) Select Expand

  local x, y, layer = hero:get_position()
  local direction = hero:get_direction()
  if direction == 0 then
    x = x + 16
  elseif direction == 1 then
    y = y - 16
  elseif direction == 2 then
    x = x - 16
  elseif direction == 3 then
    y = y + 16
  end

  map:create_bomb{
    name = "bomb",
    x = x,
    y = y,
    layer = layer
  }

--bomb test
sol.timer.start(1000, function()
if map:has_entities("bomb") and bomb:overlaps(test) then
      test:set_enabled(false)
    end
  return true
end)

I actually tried map:has_entities() and creating the bomb beforehand. I thought it was the timer, but that was not the case after some more testing.

Code ( lua) Select Expand

local x, y, layer = hero:get_position()
  local direction = hero:get_direction()
  if direction == 0 then
    x = x + 16
  elseif direction == 1 then
    y = y - 16
  elseif direction == 2 then
    x = x - 16
  elseif direction == 3 then
    y = y + 16
  end

  map:create_bomb{
    x = x,
    y = y,
    layer = layer
  }

--bomb test
sol.timer.start(1000, function()
    if map:has_entitiy("bomb_1") and bomb_1:overlaps(test) then
      test:set_enabled(false)
    end
  return true
end)

Code Select Expand

Error: In on_started: [string "maps/soulia_forest/soulia_forest.lua"]:80: attempt to call method 'has_entitiy' (a nil value)

I also tried:

Code ( lua) Select Expand

sol.timer.start(1000, function()
for bomb in map:get_entities("bomb") do
  if bomb_1:overlaps(test) then
      test:set_enabled(false)
  end
end
  return true
end)

As well as...

Code ( lua) Select Expand

sol.timer.start(1000, function()
  if map:has_entities("bomb") and bomb_1:overlaps(test) then
    test:set_enabled(false)
  end
  return true
end)

Okay, I want an entity to be disabled when a bomb is placed on it. I am guessing that it is not working because the bomb is not created before the start of the map.

Code ( lua) Select Expand

--bomb test
sol.timer.start(1000, function()
    if bomb_1:overlaps(test) then
      test:set_enabled(false)
    end
  return true  -- To call the timer again (with the same delay).
end)

Code Select Expand

Error: In on_started: [string "maps/soulia_forest/soulia_forest.lua"]:57: attempt to index local 'bomb_1' (a nil value)

[Updated:]

Zefk, I do the exact same thing. But you have to admit, it's not great to export the entire image, set up the animations, then have to re-export the image for every change. It'd be a lot easier to view animations in the app your animating in.

@max
I use the Export Layers Plugin. It would be a pain to export lots of layers one at a time. On another note, registry.gimp.org is gone!?
https://github.com/khalim19/gimp-plugin-export-layers/releases
https://web.archive.org/web/20171209015125/http://registry.gimp.org/node/28268

Updated: Extension links.

Also, I use the merge visible layers... if I need to export a single image. You should see it near the bottom when right clicking a layer.

It'd be a lot easier to view animations in the app your animating in.

This is very true. Gimp should learn from Solarus and make a sprite editor.

Although, Gimp does have - filters > animation > playback

[Script above:]

@Max
Good point.

Script above: Here

Okay, I finalized the scrolling credits script. You can get the script above for now until I add it to the script section. One can either load it or modify it for require.

Feature added:
+Change direction of the scrolling credits
+Change whether the game pauses during the start of credits (as in suspend)
+Change skip speed and the key's letter

@Bagu
This video is similar to the one I learned from when I used Photoshop for some pixel art, but I use Gimp and Krita now.
https://www.youtube.com/watch?v=rLdA4Amea7Y

@Max
I just use the Solarus sprite editor to check animation.

[Edit:]

The "gif" is choppy, but the scrolling credits is working fine on my computer. I think I will go ahead and finalize the script for the book. I should also release a demo in the script section of the forum.

Edit: Did further tests and added a few more features. I updated the script above.

On another note, I made changes on Github: Changelog