Super Mario Bros. X Forums

Enjl wrote:Load APIs with
API.load("apiname")
Then use functions from here:
http://wohlsoft.ru/pgewiki/HealthPoint

API.load(healthpoint.lua)

HealthPoint.setNPCDamage(168, 1, 1)
HealthPoint.setNPCDamage(168, 4, 0)
HealthPoint.setNPCHealth(168, 5)

Enjl wrote:oh my bad you need to do
local HealthPoint = API.load("healthpoint")
unsure about the capital letters in the quotation mark.

local HealthPoint = loadAPI("healthpoint")

HealthPoint.setNPCDamage(168, 1, 1)
HealthPoint.setNPCDamage(168, 4, 0)
HealthPoint.setNPCHealth(168, 5)

Enjl wrote:what error is it giving you? Make sure your file is called lunadll.lua, not lunadll.lua.txt. Also make sure your .lvl is one folder above the lunadll.lua.

local HealthPoint = API.load("healthpoint")

HealthPoint.setNPCDamage(168, 1, 1)
HealthPoint.setNPCDamage(168, 4, 0)
HealthPoint.setNPCHealth(168, 5)

...2.0 Open Beta-Release 2\worlds\sandbox\test\lunadll.lua:1 attempt to index
global 'API' (a nil value)

Enjl wrote:your lunalua is outdated. Try loadSharedAPI because updating 2.0's lua is a pain and not worth it with the next beta coming soon

Enjl wrote:your lunalua is outdated. Try loadSharedAPI because updating 2.0's lua is a pain and not worth it with the next beta coming soon

width=52
height=54
gfxwidth=52
gfxheight=54
frames=2
framestyle=1
framespeed=2
score=5
noyoshi=1

HealthPoint.setNPCDamage(29, 1, 1)

Enjl wrote:Healthpoint is weird. It automatically gives properties to all NPCs. There's an onNPCKill event in lunalua which allows you to hook right into what happens BEFORE an npc dies and even cancel the death. I suggest looking into that, in conjunction with pnpc.lua to save npc-specific variables for HP

function onNPCKill(killObj, killedNPC, killReason)
	if killedNPC.id == 168
		if killReason == 3 then --Here's where'd I'd also test if the custom variable equals 0.
			--Variable goes down by one here
		else
			Event.cancelled --Am I canceling the event correctly?
	end
end

Enjl wrote:You're missing a "then" in the ID check.
To cancel the event, use killObj.cancelled=true
Make sure to also allow death by reason 9 if you want despawning to be possible.

Alright onto pnpc.
Pnpc is an api which lets you wrap a specific npc object with
local w (or whatever you want it to be) = pnpc.wrap(npcObj) (in your case, killedNPC.
If the wrapper doesn't exist yet, it'll be initialised. If it exists, it will be returned.
w can access everything a npc can, but also has access to a few more things, most notable, pnpcObj.data

w.data is an empty table and this is where you can initialise your hp and keep track of it by creating a new variable in this table.

Sorry for the kinda hacky explanation. I'm a bit in a hurry >.< Hope that clears it up for you.

local w = pnpc.wrap(npcObj)

function onNPCKill(killObj, killedNPC, killReason)
	if killedNPC.id == 168 then
		if killReason == 9 then
			if w < 2 then
				w = w + 1
			else
				killObj.cancelled=true
			end
		end
	end
end

2.0 Open Beta-Release 2\worlds\sandbox\test\lunadll.lua:1: attempt to index
global 'pnpc' (a nil value)

Enjl wrote:pnpc is an API, just like healthPoint. You load it with

Code: Select all

local pnpc = loadSharedAPI("pnpc")

Afterward you can wrap your NPC object (killedNPC) into a pnpc object with

Code: Select all

w = pnpc.wrap(killedNPC)

w has all properties of killedNPC. There's w.x, w.height and you can also set memory offsets of the npc with w:mem().
The reason we're using pnpc is so that we can store the HP variable for each specific enemy and keep them consistent across ticks. That's what pnpc was made for and it's super handy.
But what you're interested in is the w.data table.
You can initialise a variable with:

Code: Select all

if w.data.hp == nil then
  w.data.hp = 0
end

local pnpc = loadSharedAPI("pnpc")

w = pnpc.wrap(killedNPC)

if w.data.hp == nil then
  w.data.hp = 0
end

function onNPCKill(killObj, killedNPC, killReason)
	if killedNPC.id == 168 then
		if killReason == 9 then
			if w.data.hp < 2 then
				w.data.hp = w.data.hp + 1
			else
				killObj.cancelled=true
			end
		end
	end
end

...king\SMBX 2.0 Open Beta-Release 2\LuaScriptsLib\pnpc.lua:142: attempt to
index local 'npc' (a nil value)

Enjl wrote:You have to wrap killedNPC and start doing stuff with it in a scope where it's actually defined. I suggest after the killedNPC.id check. Also I noticed that your HP only counts down on killReason 9 which is equivalent to despawn or being collected.

local pnpc = loadSharedAPI("pnpc")

function onNPCKill(killObj, killedNPC, killReason)

	w = pnpc.wrap(killedNPC)

	if w.data.hp == nil then
	  w.data.hp = 0
	end

	if killedNPC.id == 168 then
		if killReason == 9 then
			if w.data.hp < 2 then
				w.data.hp = w.data.hp + 1
			else
				killObj.cancelled=true
			end
		end
	end
end