How do I modify building type

[hall123]

I'm working on a mod that involves two items: painmagnet and painmagnet_item.

Their relationship is similar to eyeturret and eyeturret_item from Houndius Shootius.

The issue I'm facing is that when I move painmagnet_item from my inventory with the mouse to build, the displayed text says Plant instead of Build.

Additionally, the constructed object is much smaller than expected.

 

The code repository for the mod is here

https://github.com/yanghao5/painmagnet

Here is the key code snippet .

modmain.lua

AddRecipe2("painmagnet_item",
    {
        Ingredient("nightmarefuel", 5)
    },
    TECH.SCIENCE_ONE,
    {
        -- placer = "painmagnet_placer",
        atlas = "images/inventoryimages/inventoryicon.xml",
        image = "inventoryicon.tex" 
    },
    {"MAGIC"}
)

scripts\prefabs.lua

-- painmagnet_item ondeploy
local function ondeploy(inst, pt, deployer)
    local structure = SpawnPrefab("painmagnet")
    if structure then
        structure.Transform:SetPosition(pt:Get())
        inst:Remove() -- Remove the item after deployment
    end
end 

-- painmagnet_item
local function itemfn()
    local inst = CreateEntity()
    inst.entity:AddTransform()
    inst.entity:AddAnimState()
    inst.entity:AddNetwork()

    MakeInventoryPhysics(inst)
    MakeInventoryFloatable(inst)

    -- inst:AddTag("structure")
    inst.AnimState:SetBank("painmagnet_item")
    inst.AnimState:SetBuild("painmagnet_item")
    inst.AnimState:PlayAnimation("idle")

    if not TheWorld.ismastersim then
        return inst
    end

    inst:AddComponent("inspectable")
    inst:AddComponent("inventoryitem")
    inst.components.inventoryitem.imagename = "inventoryicon"
    inst.components.inventoryitem.atlasname = "images/inventoryimages/inventoryicon.xml"

    inst:AddComponent("deployable")
    inst.components.deployable.ondeploy = ondeploy
    inst.components.deployable:SetDeployMode(DEPLOYMODE.ANYWHERE)

    return inst
end

-- painmagnet
local function fn()
    local inst = CreateEntity()
    inst.entity:AddTransform()
    inst.entity:AddAnimState()
    inst.entity:AddNetwork()

    MakeObstaclePhysics(inst, 1)
    
    inst:AddTag("structure")

    inst.AnimState:SetBank("painmagnet")
    inst.AnimState:SetBuild("painmagnet")
    inst.AnimState:PlayAnimation("idle")

    if not TheWorld.ismastersim then
        return inst
    end

    inst:AddComponent("inspectable")
    inst:AddComponent("workable")
    inst.components.workable:SetWorkAction(ACTIONS.HAMMER)
    inst.components.workable:SetWorkLeft(4) -- Takes 4 hammer hits to destroy
    inst.components.workable.onfinish = function(inst, worker)
        inst:Remove()                       -- Simply remove for now; add loot later if desired
    end

    return inst
end

return Prefab("painmagnet_item", itemfn, itemassets),
    Prefab("painmagnet", fn, assets),
    MakePlacer("painmagnet_placer", "painmagnet", "painmagnet", "idle")

 

I think the key is the ondeploy function.

local function ondeploy(inst, pt, deployer)
    local structure = SpawnPrefab("painmagnet")
    if structure then
        structure.Transform:SetPosition(pt:Get())
        inst:Remove() 
    end
end 

I searched the Portable mod and didn't find any useful examples.

Does anyone know how to fix it?
Or are there any related examples I can refer to?

[oregu]

You can make your Recipe structures as well

{"MAGIC", "STRUCTURES"}

Any object with the deployable component has "Plant" as its Action string by default.

in STRINGS.ACTIONS

Spoiler

TOGGLE_DEPLOY_MODE =
{
  GENERIC = "Plant",
  GROUNDTILE = "Place Ground",
  WALL = "Build Wall",
  FENCE = "Build Fence",
  GATE = "Build Gate",
  TURRET = "Place",
  WATER = "Launch",
  PORTABLE = "Place",
  DEPLOY = "Deploy",
  DEPLOY_TOSS = "Toss",
  FERTILIZE_GROUND = "Fertilize Plot",
},

If these magnets are similar to the turrets I highly recommend using "Place" instead because of multi-language and consistency. The way you do this is inst:AddTag"deploykititem".

If you want to make it "Build" still, you can do something like (untested):

Spoiler

GLOBAL.STRINGS.ACTIONS.TOGGLE_DEPLOY_MODE.CONSTRUCTED_TURRET = "Build"
DEPLOY_strfn_old = GLOBAL.ACTIONS.DEPLOY.strfn
GLOBAL.ACTIONS.DEPLOY.strfn = function(act, ...)
	if act.invobject and act.invobject:HasTag"builtturret" then -- "builtturret" is a new tag
		return "CONSTRUCTED_TURRET"
	end
	return DEPLOY_strfn_old(act, ...)
end

To change size of an object, you can do something like:

Spoiler

local SCALE = x -- in units. for reference 4 = 1 pitchfork tile
inst.AnimState:SetScale(SCALE, SCALE)

But if I had to guess, generally the better practice is to upscale it in whatever program you're using to create the texture instead. Be sure to tweak the obstacle physics as well:

Spoiler

MakeObstaclePhysics(inst, radius, height) -- in units. for reference 4 = 1 pitchfork tile

Edited March 16, 2025 by oregu

[hall123]

@oregu

Thank you very much! I’ve fixed these issues.

This code is useful:

{"MAGIC", "STRUCTURES"}
inst:AddTag("deploykititem")

But this code doesn’t work:

MakeObstaclePhysics(inst, 1, 3)

Then I realized the texture size might be too small.

I reviewed other mods.

I changed the texture size from 128x128 pixels to 512x512 pixels.

 

Everything works fine now.

[oregu]

8 hours ago, hall123 said:

@oregu

Thank you very much! I’ve fixed these issues.

This code is useful:

{"MAGIC", "STRUCTURES"}
inst:AddTag("deploykititem")

But this code doesn’t work:

MakeObstaclePhysics(inst, 1, 3)

Then I realized the texture size might be too small.

I reviewed other mods.

I changed the texture size from 128x128 pixels to 512x512 pixels.

 

Everything works fine now.

MakeObstaclePhysics already exists in your code. I think you can only use MakeObstaclePhysics once, and then you have to modify the physics using other means.

Edited March 17, 2025 by oregu