Need help with lua? - LunaLua General Help

[Angelus]

How to make a NPC stop moving while in midair, or while falling? I know we can set the NPC to not move at all, but I only want it to be stuck during its fall. Sadly I wasn't able to find anything similar to the player.mem which can set a certain thing to happen when not touching the ground, etc.

[PixelPest]

You can check NPC.speedY (it will be greater than 0 if falling) and then set that

[Angelus]

Sorry, while I understand what you meant I should've done a better question. I don't want to keep the NPC floating in midair. What I want is to keep it from moving to the right or to the left when falling, but once it hits the ground, it starts moving as usual.

[Emral]

You can use the NPC.dontMove flag if none of your NPCs with the ground pound property natively use it.

[TUWAN]

Isn't there a discord server for this?

[PixelPest]

Yeah, but Discodehaus isn't solely about LunaLua help, it has other channels too

[Angelus]

Alright! The closest thing I've got so far is the code below. The problem is, the NCP now follows my direction instead of taking its own. Is there something I could do to prevent it? Also, tell me if something is wrong into my code so I can fix it if necessary.

Spoiler: show

function onLoop()
for k,v in pairs(NPC.get(19,player.section)) do
if v:mem(0x0A,FIELD_WORD) == 0 then
v.dontMove = true;
elseif v:mem(0x0A,FIELD_WORD) == 2 then
v.dontMove = false;
end
end
end

By the way, shouldn't I be able to cancel its X speed during the falling? I've tried to set it to 0 but it didn't work.

[RPG_Magician]

Can someone help me with disabling saving on the overworld, and replace it with talking to a npc inside a level to save?
I'm still struggling with the basics of Lunalua and any help would be appreciated.

[DeMuZ]

Can someone help me with disabling saving on the overworld, and replace it with talking to a npc inside a level to save?
I'm still struggling with the basics of Lunalua and any help would be appreciated.

The easiest way to make player unable to save is to make the game think all the time that he has been cheating.
Put this code into your overworld luna file. (lunaoverworld.lua in your episode folder)

Code: Select all

function onTick()
	Defines.player_hasCheated = true
end

I think I don't have to explain this one.
Put this code into your lvl files where you wanna save by talking. (lunadll.lua in your lvl folder)

Code: Select all

function onEvent(name)
	if name == "your event name" then
		Misc.saveGame()
	end
end

I hope I helped you.

[Angelus]

Something went wrong with my code... I was trying to turn the Muncher block into an instant kill one (even if the player is big at the moment he touches it), but for some reason the game went mad. Take a look at the picture:

Spoiler: show

As you can see, the player just keeps dying over and over after touching it until I have no choice but to close the editor. Here's the actual code:

Spoiler: show

for _,v in pairs (Block.get(109)) do
if v:collidesWith(player) == 1 then
player:kill();

What have I done wrong?

[PixelPest]

You're killing the player over and over again which is why the effect keeps playing. Try only killing the player only if v:collidesWith(player) and player:mem (0x13E, FIELD_WORD) == 0

[Emral]

You're killing the player over and over again which is why the effect keeps playing. Try only killing the player only if v:collidesWith(player) and player:mem (0x13E, FIELD_WORD) == 0

Uhh... Block:collidesWith returns an int between 0 and 4. In this if statement, it will alway be true.

[Angelus]

You're killing the player over and over again which is why the effect keeps playing. Try only killing the player only if v:collidesWith(player) and player:mem (0x13E, FIELD_WORD) == 0

Oh thank you very much, it works beautifully! Although I would like to know, why was that needed in order to work?

[PixelPest]

As I said before, you're killing the player over and over again. When the death effect is spawned, the position of the player's hitbox stays in the same spot as when it died; it doesn't follow the effect path. Because of this, the block collided with the player's hitbox over and over, so the player was killed over and over, thus spawning a new death effect each tick. The player memory check that I provided acts as a counter for the death animation. If it isn't playing, the field remains 0

[Angelus]

I see, thank you very much for this explanation.

[Angelus]

How do I set a paragoomba to chase through lua?

[loop]

How do I set a paragoomba to chase through lua?

The brown Paragoomba can chase without LunaLUA, but I am guessing you are talking about the Red Paragoomba.

[Angelus]

How do I set a paragoomba to chase through lua?

The brown Paragoomba can chase without LunaLUA, but I am guessing you are talking about the Red Paragoomba.

No, it's not that. What I meant is, how do I change a Paragoomba which is hovering left-right, to a chase state through Lua. I don't want it to be chasing since the moment it spawns, but to start chasing after a certain event instead. The thing is, I can't find any sort of thing chase-related in the NPC class to use into my code.

[Kevsoft]

I might be wrong here, but I think the current movement property is saved in the ai values. You might want print out the values from .ai1 to .ai5
At least this is the case for cheep-cheep AI

[Angelus]

That's very useful, thank you.