Need help with lua? - LunaLua General Help

[Emral]

Can someone give me an idea of how to get an npc to move (like a big leap) to one position to another?

First you'll need to load pnpc.lua. Then in onTick() you'll have to grab all of that NPC in the level using in pairs and then wrap each NPC via pnpc.wrap(). From here you'll have to create a data object for each NPC that acts as a counter to tell it when to jump via something like:

Code: Select all

if npc.data.counter == nil then
    npc.data.counter = 300;
elseif (npc.data.counter == 100) and (not npc.collideBlockBottom) then
    npc.data.counter = 101;
elseif (npc.data.counter < 100) and (npc.data
counter > 0) and (not npc.collideBlockBottom) then
    npc.speedY = num;
else
    npc.data.counter = 300;
end

You'll likely want to change "num" to a formula to create a nice parabolic jump and you can edit the counter values too. I also added a test to see if the NPC is not touching the ground or else the jump should end as well as a similar test to make sure that before it jumps it is in fact touching the ground. You may or may not need to edit speedX during the jump too. Depending on the NPC you may need to use npcconfig.lua to set nogravity to 1 for that NPC during the jump to get a bit more control. After this code I posted above you'll need to subtract 1 from npc.data.counter each tick. An alternate way to do this would be to use the SMB3 paragoomba or SMW paragaloomba and modify its AI fields. You may still need pnpc.lua to do that though in a similar fashion as I've shown above, it will just make the jump itself easier to handle

Your code is untested and littered with errors.
First of all, it's collidesBlockBottom.
Secondly, you're never modifying counter, nor is it clear from your explanation what you're even trying to do with it. The way this code is set up is confusing as hell.
You also only ever modify speedY when the enemy is NOT touching the ground. From the looks of it, it'll NEVER jump, as the counter will be stuck at 101.
Another hassle is the fact that NPC.speedX and NPC.speedY can only be modified if the NPC isn't already modifying these fields in vanilla SMBX. Editing speedX for most NPCs is impossible and it's easier to use NPC.dontMove or program an NPC-like object from scratch.
Applying the force for 100 frames is silly as well, so is setting nogravity. npcconfig modifies config for all npcs of an id. You can't do anything for individual npcs with it. The force also only needs to be applied for one frame. After that you can let gravity handle the rest.

[DeMuZ]

Code: Select all

local ssj0 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 0.gif")

function onTick()
	Graphics.drawImageToSceneWP(ssj0, X1, Y1, 5)
end

Am I doing it wrong? It doesn't work.

[PixelPest]

It doesn't look like you've defined X1 or Y1 anywhere and also you might need to use a .png file (not 100% sure about that though)

[loop]

It doesn't look like you've defined X1 or Y1 anywhere and also you might need to use a .png file (not 100% sure about that though)

I am pretty sure that it does require PNGs.

[Kevsoft]

Code: Select all

local ssj0 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 0.gif")

function onTick()
	Graphics.drawImageToSceneWP(ssj0, X1, Y1, 5)
end

Am I doing it wrong? It doesn't work.

table of LuaImageResource

The return value of Graphics.loadAnimatedImage is a table of LuaImageResource.

[DeMuZ]

A TABLE??? Oh... i forgot about it thanks
btw, X1 and Y1 were defines, that was only a few lines of my code

Loads an animated image (i.e. gifs) and returns a table of each frame in the animated image. The second return argument is the average frame speed (SMBX frames per frame switch) given by the gif metadata.

After reading this, I still don't know how to use it in other functions :<

[timocomsmbx2345]

I need help with using anything inside the LuaScriptsLib folder.

[Kevsoft]

A TABLE??? Oh... i forgot about it thanks
btw, X1 and Y1 were defines, that was only a few lines of my code

Loads an animated image (i.e. gifs) and returns a table of each frame in the animated image. The second return argument is the average frame speed (SMBX frames per frame switch) given by the gif metadata.

After reading this, I still don't know how to use it in other functions :<

Well, it's quite simple. If your gif has a total of 3 frames, then you can extract those pretty easy:

Code: Select all

local ssj0 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 0.gif")
local ssj0_1 = ssj0[1]
local ssj0_2 = ssj0[2]
local ssj0_3 = ssj0[3]

or iterate through all frames:

Code: Select all

local ssj0 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 0.gif")
for i in 1, #ssj0 do
    local frame = ssj0[i]
    -- Do something with frame here
end

[timocomsmbx2345]

My PGE doesn't know what ".lua" file are, becuase they dont work
Becuase I need help with using anything inside the LuaScriptsLib folder.

[loop]

My PGE doesn't know what ".lua" file are, becuase they dont work
Becuase I need help with using anything inside the LuaScriptsLib folder.

Weird. Try putting the used codes in the same folder the lunadll.lua file is in.

[timocomsmbx2345]

Use moarrinkas.lua and NPCParse.lua.

but that didnt work for me the engine doesnt know those files are in th folders

Well, you need to type it as ("NPCs//moarrinkas") for it to work. Though, the API's kinda broken as of now so you're better off not using it anyway.

Well how does this then? https://www.youtube.com/watch?v=yhcnNsdLqbU&t=3s

[DeMuZ]

My code seems to be correct now, but it still doesn't work. Maybe I'm using wrong files?
https://cdn.discordapp.com/attachments/ ... macja2.gif
https://cdn.discordapp.com/attachments/ ... macja4.gif

[Mr10crossing]

Is there a way I can replace the starman music using LunaLua in SMBX 2.0 Beta 3?

[loop]

Is there a way I can replace the starman music using LunaLua in SMBX 2.0 Beta 3?

That should be simpler than drawing a tesseract. I haven't touched SMBX in a month due to my laptop breaking again though. Someone else should be able to help though.

[Wohlstand]

My PGE doesn't know what ".lua" file are, because they don't work
Becuase I need help with using anything inside the LuaScriptsLib folder.

What are you trying to do with them?
- PGE Editor doesn't have internal IDE for that. Yet. (But are some ideas to make IDE-like thing to edit LUA codes directly from PGE with adding hints for LunaLua and PGE Engine's APIs, etc. That for far future, because now are more important reorganizing in the process).
- PGE Engine has own Lua APIs on NPC-AI, Level-Global, Playable Character and not yet per-level APIs (therefore doesn't work yet. P.S. LunaLua API will be PARTIALLY compatible with PGE Engine's in-level API, because no super-specific to SMBX commands and no mem() commands because super-useless on PGE side)
- "luna.lua" script names are new (to replace old names like "lunadll.lua") and requiring you fresh LunaLua version. It's already in public and latest SMBX 2.0 package. You still use "File" -> "Open custom data folder" menu item to quickly open a custom folder of your level.

[DeMuZ]

Ok... I think I'm too dumb to make my code work with animated gif :v
If someone makes it work, he'll be given a virtual cookie.

The whole code:

Code: Select all

local colliders = loadSharedAPI("colliders")
local rng = loadSharedAPI("rng")
local encrypt = loadSharedAPI("encrypt")
xData = encrypt.Data(Data.DATA_WORLD,true)

intro = false

local hurt = 0
local time = 100
local Aura = 0
local showInstruction = 0

------------------------------------------------------------------------------------------
local star_gfx = Graphics.loadImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\star.png")
local hp_gfx = Graphics.loadImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\hp.png")
local coin_gfx = Graphics.loadImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\coin.png")
local life_gfx = Graphics.loadImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\1up.png")

local ssj0 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 0.gif")	
local ssj1 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 1.gif")
local ssj2 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 2.gif")
local ssj3 = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 3.gif")
local ssj_blue = Graphics.loadAnimatedImage(getSMBXPath().."\\worlds\\The Seven Stars (by DeMuZ)\\hud gfx\\ssj 4.gif")

------------------------------------------------------------------------------------------
if xData:get("coins") == nil then
	xData:set("coins",0)
	xData:save()
end

if xData:get("Max_hp") == nil then
	xData:set("Max_hp",5)
	xData:save()
end

if xData:get("world") == nil then
	xData:set("world",1)
	xData:save()
end

if xData:get("aura") == nil then
	xData:set("aura",0)
	xData:save()
end
	
------------------------------------------------------------------------------------------
local max_hp = xData:get("Max_hp")

------------------------------------------------------------------------------------------
function onTick()
	max_hp = xData:get("Max_hp")
	
	--all the forms
	if xData:get("hp") > max_hp*2/3 then
		aura()
		
	else
		Aura = 0
		
		if player.altJumpKeyPressing == true then
			player.altJumpKeyPressing = false
			player.jumpKeyPressing = true
		end
		
		Defines.jumpheight = 16
		Defines.jumpheight_bounce = 16
		Defines.player_runspeed = 5
		Defines.player_walkspeed = 2.5
	end
	
	--hp_system_core
	HP()
	
	if Level.filename() == "intro.lvl" then
		if intro == true then
			player.speedX = 0
			player.speedY = 0
			player.jumpKeyPressing = false
			player.altJumpKeyPressing = false
		end
	end
	
	if Level.filename() ~= "intro.lvl" then
		--hp
		Graphics.drawImage(hp_gfx,8,64)
		Text.print(xData:get("hp").."/"..max_hp,32,64)

		--lives
		Graphics.drawImage(life_gfx,8,44)
		Text.print(mem(0x00B2C5AC,FIELD_FLOAT),32,44)
	
		--coins
		coins()
		
		--stars
		if mem(0x00B251E0,FIELD_WORD) > 0 then
			Graphics.drawImage(star_gfx,8,84)
			Text.print(mem(0x00B251E0,FIELD_WORD).."/7",32,84)
		end
		
	end
end

------------------------------------------------------------------------------------------
Graphics.activateHud(false)

------------------------------------------------------------------------------------------
function aura()
	local X1 = player.x - 12
	local Y1 = player.y - 12
	
	if Aura < 0 then
		Aura = 0
	end
	
	function onKeyboardPress(key)
		--instruction
		if key == VK_TAB then
			showInstruction = 100
		end
		
		--power up!!!
		if key == VK_SPACE then
			if Aura < (xData:get("aura")+1)*20 then
				Aura = Aura + 1
			end
		
		else
			if Aura < 20 then
				Aura = 0
			
			elseif Aura < 40 then
				Aura = 20
				
			elseif Aura < 60 then
				Aura = 40
				
			elseif Aura < 80 then
				Aura = 60
				
			elseif Aura < 100 then
				Aura = 80
			end
		end
	end
	
	--power down!!!
	if player.altRunKeyPressing then
		Aura = 0
	end
	
	--instruction
	if showInstruction > 0 then
		Text.print("Hold (Space) to power up.",8,556)
		Text.print("Press (Tanooki) to power down.",8,576)
		showInstruction = showInstruction - 1
	
	else
		Text.print("(TAB)",8,576)
	end
	
	--base form
		if  Aura < 20 then
			if player.altJumpKeyPressing == true then
				player.altJumpKeyPressing = false
				player.jumpKeyPressing = true
			end
			
			Defines.jumpheight = 16
			Defines.jumpheight_bounce = 16
			Defines.player_runspeed = 5
			Defines.player_walkspeed = 2.5
		end
			
	--full potential base form
		if Aura >= 20 and Aura < 40 then
			for i = 1, 3 do
				frame = ssj0[i]
				Graphics.drawImageToSceneWP(frame, X1, Y1, 5)
			end
			
			Defines.jumpheight = 20
			Defines.jumpheight_bounce = 20
			Defines.player_runspeed = 6
			Defines.player_walkspeed = 3
		end
	
	--super saiyan form (ssj)
		if Aura >= 40 and Aura < 60 and xData:get("aura") > 0 then
			for i = 1, 3 do
				frame = ssj1[i]
				Graphics.drawImageToSceneWP(frame, X1, Y1, 5)
			end
			
			player.powerup = PLAYER_FIREFLOWER
			
			Defines.jumpheight = 24
			Defines.jumpheight_bounce = 24
			Defines.player_runspeed = 7
			Defines.player_walkspeed = 3.5
		end
		
	--ascended super saiyan form (ssj2)
		if Aura >= 60 and Aura < 80 and xData:get("aura") > 1 then
			for i = 1, 3 do
				frame = ssj2[i]
				Graphics.drawImageToSceneWP(frame, X1, Y1, 5)
			end
			
			Defines.jumpheight = 28
			Defines.jumpheight_bounce = 28
			Defines.player_runspeed = 8
			Defines.player_walkspeed = 4
		end
		
	--final super saiyan form (ssj3)
		if Aura >= 80 and Aura < 100 and xData:get("aura") > 2 then
			for i = 1, 3 do
				frame = ssj3[i]
				Graphics.drawImageToSceneWP(frame, X1, Y1, 5)
			end
			
			Defines.jumpheight = 32
			Defines.jumpheight_bounce = 32
			Defines.player_runspeed = 9
			Defines.player_walkspeed = 4.5
		end
		
	--super saiyan blue (ssjb)
		if Aura >= 100 and xData:get("aura") > 3 then
			for i = 1, 3 do
				frame = ssj_blue[i]
				Graphics.drawImageToSceneWP(frame, X1, Y1, 5)
			end
			
			Defines.jumpheight = 36
			Defines.jumpheight_bounce = 36
			Defines.player_runspeed = 8
			Defines.player_walkspeed = 4
		end
end

------------------------------------------------------------------------------------------
function coins()
	if mem(0x00B2C5A8,FIELD_WORD) > 0 then
		xData:set("coins",xData:get("coins")+1)
		mem(0x00B2C5A8,FIELD_WORD,mem(0x00B2C5A8,FIELD_WORD)-1)
	end
	
	Graphics.drawImage(coin_gfx,8,24)
	Text.print(xData:get("coins"),32,24)
end
------------------------------------------------------------------------------------------
function onExitLevel()
	xData:save()
end

---------------------------------------------------------------------------------
function onEvent(name)
	if name == "checkpoint" and xData:get("hp") < max_hp and time == 0 then
		xData:set("hp", xData:get("hp")+1)
		xData:save()
	end
	
	if name == "exit1" then
		xData:set("world",2)
		xData:save()
	end
	
	intro = false
	
	if name == "START" then
		intro = true
	end
	
	--SHOP!!!
		if name == "SHOP mushroom" and xData:get("coins") >= 200 and xData:get("hp") < max_hp then
			xData:set("hp", xData:get("hp")+1)
			xData:set("coins", xData:get("coins")-200)
			xData:save()
		end
		
		if name == "SHOP 1up" and xData:get("coins") >= 300 then
			mem(0x00B2C5AC,FIELD_FLOAT, mem(0x00B2C5AC,FIELD_FLOAT)+1)
			xData:set("coins", xData:get("coins")-300)
			xData:save()
		end
		
		if name == "SHOP max_hp 6" and xData:get("coins") >= 1000 and xData:get("Max_hp") < 6 then
			xData:set("Max_hp", 6)
			xData:set("coins", xData:get("coins")-1000)
			xData:save()
		end
end

---------------------------------------------------------------------------------
function onStart()
	if Level.filename() == "intro.lvl" then
		xData:set("coins",0)
		xData:set("hp",1)
		xData:set("Max_hp",5)
		xData:set("world",1)
		xData:set("aura",0)
		xData:save()
	end
	
	if xData:get("hp") == nil or xData:get("hp") == 0 then
		xData:set("hp",1)
		xData:save()
	end
	
	if xData:get("world") > 1 then
		triggerEvent("warp1")
	end
end

---------------------------------------------------------------------------------
function onNPCKill(eventObj, npcObj, npcKillReason)
	if xData:get("hp") < max_hp and npcObj.id == 9 and npcKillReason == 9 then
		xData:set("hp", xData:get("hp")+1)
		xData:save()
	end

	if npcObj.id == 184 and npcKillReason == 9 then
		xData:set("hp", max_hp)
		xData:save()
	end
end

--<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
function HP()
	if time > 0 then
		time = time - 1
	end
	
	if player.powerup ~= PLAYER_SMALL and xData:get("hp") == 1 then
		player.powerup = PLAYER_SMALL
		player:mem(0x122,FIELD_WORD,12)
	end
	
	if player.powerup == PLAYER_HAMMER then
		player.powerup = PLAYER_BIG
	end

	if player:mem(0x158, FIELD_WORD) == 9 then
		player:mem(0x158, FIELD_WORD,0)
	end
	
	if player:mem(0x13E, FIELD_WORD) > 0 and hurt == 0 then
		xData:set("hp",0)
		xData:save()
	end
	
	if hurt == 0 then
		if player:mem(0x122, FIELD_WORD) == 2 then
			xData:set("hp", xData:get("hp")-1)
			xData:save()
			hurt = 1
		end
	end
	
	if player:mem(0x122, FIELD_WORD) ~= 2 and hurt > 0 then
		hurt = 0
	end
	
	if  xData:get("hp") > 1 and player.powerup == PLAYER_SMALL then
		player.powerup = PLAYER_BIG
		player:mem(0x122,FIELD_WORD,12)
	end
end

[Kevsoft]

Okay, other question: How many frames does your animated gif have? You don't want to draw all the frames at once of course!

[DeMuZ]

I posted links for that animations a few posts ago. Just right-click and save. I think it'll be more helpful (for me) than just giving the number of frames.

[Kevsoft]

Well a simple way to draw the right frame, is to make a local variable of the current frame you want to draw:

Code: Select all

local frameNum_ssj0 = 1
-- <code>

-- somewhere for rendering
Graphics.draw(ssj0[frameNum_ssj0], X1, Y1, 5)
frameNum_ssj0 = frameNum_ssj0 + 1
if frameNum_ssj0 > #ssj0 then
    frameNum_ssj0 = 1
end

I hope it makes somewhat sense for you

[Angelus]

Hello there, I've been trying to use LunaLua for custom music and while it works pretty well for most of the time, I'm facing a little problem here:
I know how to set the music to play into a specific event, but I would like to know how to make it stop after a posterior event, replacing it by silence. The problem is, all my attempts have failed since the music just start over again when I expected it to stop playing. Here's the code I have so far. Am I doing something wrong?

Spoiler: show

play = false

function onLoop()
if play then
Audio.SeizeStream(1.14)
Audio.MusicOpen("1 - 1 Boss.ogg")
Audio.MusicPlay()
end
end

function onEvent(eventname)
if eventname == "Cutscene 4 - 15" then
play = true
else
if eventname == "Cutscene 5 - 1" then
play = false
Audio.ReleaseStream(1.14)
end
end