How to create NPCs with basegame behavior?

[Donkdonker124]

Code: Select all

--NPCManager is required for setting basic NPC properties
local npcManager = require("npcManager")

--Create the library table
local paraGoombrat = {}
--NPC_ID is dynamic based on the name of the library file
local npcID = NPC_ID

--Defines NPC config for our NPC. You can remove superfluous definitions.
local paraGoombratSettings = {
	id = npcID,
	gfxheight = 48,
	gfxwidth = 40,
	gfxoffsetx = 0,
	gfxoffsety = 0,
	width = 32, 
	height = 32,
	frames = 4,
	framestyle = 0,
	framespeed = 4,
	isflying = true,
}

--Applies NPC settings
npcManager.setNpcSettings(paraGoombratSettings)

--Register the vulnerable harm types for this NPC. The first table defines the harm types the NPC should be affected by, while the second maps an effect to each, if desired.
npcManager.registerHarmTypes(npcID,
	{
		HARM_TYPE_JUMP,
		HARM_TYPE_FROMBELOW,
		HARM_TYPE_NPC,
		HARM_TYPE_PROJECTILE_USED,
		HARM_TYPE_LAVA,
		HARM_TYPE_HELD,
		HARM_TYPE_TAIL,
		HARM_TYPE_SPINJUMP,
		HARM_TYPE_OFFSCREEN,
		HARM_TYPE_SWORD
	}, 
	{
		[HARM_TYPE_JUMP]=753,
		[HARM_TYPE_FROMBELOW]=754,
		[HARM_TYPE_NPC]=754,
		[HARM_TYPE_PROJECTILE_USED]=754,
		[HARM_TYPE_LAVA]={id=13, xoffset=0.5, xoffsetBack = 0, yoffset=1, yoffsetBack = 1.5},
		[HARM_TYPE_HELD]=754,
		[HARM_TYPE_TAIL]=754,
		[HARM_TYPE_SPINJUMP]=10,
		[HARM_TYPE_OFFSCREEN]=10,
		[HARM_TYPE_SWORD]=10,
	}
);

function paraGoombrat.onPostNPCHarm(event, v, rsn, culprit)
	if v.id == NPC_ID and rsn == 1 then
		event.cancelled = true
		v:transform(npcID - 1)
	end
end


function paraGoombrat.onInitAPI()
	npcManager.registerEvent(npcID, paraGoombrat, "onTickNPC")
	npcManager.registerEvent(paraGoombrat, "onPostNPCHarm")
end

return paraGoombrat

[Emral]

The line should just be this:

Code: Select all

registerEvent(paraGoombrat, "onPostNPCHarm")

There's registerEvent, a global function for registering events, and then there's the npcManager variant, which registers npc-specific events. onTickNPC, for example, is the npcManager variant of onTick. onDrawNPC for onDraw, and onPostNPCHarmNPC for onPostNPCHarm. But like, onPostNPCHarmNPC is conceptually so superfluous I don't know if it even exists.
The rule is "the one with NPC at the end only runs for the IDs of NPC you registered it to", but for onPostNPCHarm where the 1st argument is the harmed NPC, a simple id check at the start of the function takes care of it. onTickNPC and onDrawNPC are very useful because it means you don't have to do your own for loops over NPCs to figure out which NPC to run code on. Instead, the for loop happens internally, for a performance boost.

[Donkdonker124]

So, I did what you said and got rid of the NPCManager thing, but that threw up an error when I jumped on it. I added the npcID back in, and that error doesn't show up when stomped, nor on startup. So we're making progress

The bad news is that there's still no transformation.

Update: IT TRANSFORMS NOW LETS GOOOOOOOO but the alt behaviors still don't work

Update 2: the uprising: I got it to work now yaaay