# Aid with structures
**URL:** https://discourse.cataclysmdda.org/t/aid-with-structures/21666
**Category:** The Toolbox
**Created:** [October 12, 2019, 9:38pm UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666 "2019-10-12T21:38:13Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@Minecrafter\_Next\_Gen](https://discourse.cataclysmdda.org/u/Minecrafter_Next_Gen)
#### Post date: [October 12, 2019, 9:38pm UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/1 "2019-10-12T21:38:13Z")
Hello. I’m working on expanding factions, but I have experienced some code error. I could use some help with this.
> [
> {
> “type”: “mapgen”,
> “method”: “json”,
> “om\_terrain”: [“survivor\_campsite”],
> “weight”: 500,
> “object”: {
> “rows”: [
> “…”,
> “…”,
> “…”,
> “…”,
> “.mm.mm…##########…”,
> “.mm.mm…#33’‘’‘’'#…”,
> “.mm.mm…#33’‘’‘’'#…”,
> “.mm.mm…#‘’‘’‘’‘’#…”,
> “.mm.mm…#‘’‘’‘’‘’#2…”,
> “.mm.mm…#‘’‘’‘’‘’#O…”,
> “.mm.mm…#‘’‘’‘’‘’#=…”,
> “.mm.mm…#‘’‘’‘’‘’#U…”,
> “…#####++###…”,
> “…”,
> “…”,
> “…-r-…”,
> “…-r-…”,
> “…”,
> “…-r-…t…t…”,
> “…-r-…t…”,
> “…”,
> “…”,
> “…”,
> “…”
> ],
> “terrain”: {
> “m”: “t\_dirtmound”,
> “'”: “t\_grass”,
> “+”: “t\_grass”,
> “-”: “t\_dirt”,
> “.”: [“t\_grass”, “t\_grass”, “t\_grass”, “t\_grass”, “t\_grass”, “t\_dirt”],
> “b”: “t\_dirt”,
> “d”: “t\_dirt”,
> “r”: “t\_dirt”,
> “t”: “t\_tree”
> },
> “furniture”: {
> “#”: “f\_canvas\_wall”,
> “'”: “f\_groundsheet”,
> “+”: “f\_canvas\_door”,
> “-”: “f\_camp\_chair”,
> “b”: “f\_firering”,
> “r”: “f\_tourist\_table”,
> “U”: “f\_kiln\_empty”,
> “=”: “f\_smoking\_rack”,
> “O”: “f\_fvat\_empty”,
> “2”: “f\_butcher\_rack”,
> “3”: “f\_bed”
> },
> “place\_items”: [
> { “item”: “cannedfood”, “x”: [12, 4], “y”: [21, 7], “chance”: 75 },
> { “item”: “cannedfood”, “x”: [16, 4], “y”: [21, 7], “chance”: 75 },
> { “item”: “pasta”, “x”: [16, 4], “y”: [21, 7], “chance”: 75 },
> { “item”: “camping”, “x”: [10, 8], “y”: [15, 13], “chance”: 75 }
> ]
---
### Author:  [@anothersimulacrum](https://discourse.cataclysmdda.org/u/anothersimulacrum)
#### Post date: [October 12, 2019, 9:41pm UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/2 "2019-10-12T21:41:39Z")
Well, your rows all need to have the same number of characters (and it has to be a multiple of 24).
But it’s impossible to help if you don’t give the errors you’re getting.
---
### Author:  [@Minecrafter\_Next\_Gen](https://discourse.cataclysmdda.org/u/Minecrafter_Next_Gen)
#### Post date: [October 12, 2019, 9:46pm UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/3 "2019-10-12T21:46:08Z")
src/main\_menu.cpp:735 [bool main\_menu::new\_character\_tab()] Error: data/mods//Expanded Factions/survivor\_campsite.json: EOF: expecting string but found ‘:’
---
### Author:  [@anothersimulacrum](https://discourse.cataclysmdda.org/u/anothersimulacrum)
#### Post date: [October 12, 2019, 9:48pm UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/4 "2019-10-12T21:48:37Z")
You need to close the object and array there too, add `} ]` (spaced correctly) to the end of the file.
---
### Author:  [@Minecrafter\_Next\_Gen](https://discourse.cataclysmdda.org/u/Minecrafter_Next_Gen)
#### Post date: [October 13, 2019, 1:27am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/5 "2019-10-13T01:27:33Z")
What do you mean by “close the object and array”?
---
### Author:  [@anothersimulacrum](https://discourse.cataclysmdda.org/u/anothersimulacrum)
#### Post date: [October 13, 2019, 1:30am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/6 "2019-10-13T01:30:48Z")
In JSON, `{}` specifies and object, and `[]` an array.
Every object or array that is opened (has an opening `{`/`[`) must be closed (have a corresponding `}`/`]`).
At the start of that, you open an array, and an object, but do not close them.
---
### Author:  [@Minecrafter\_Next\_Gen](https://discourse.cataclysmdda.org/u/Minecrafter_Next_Gen)
#### Post date: [October 13, 2019, 1:40am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/7 "2019-10-13T01:40:48Z")
I have also received errors that state: src/main\_menu.cpp:735 [bool main\_menu::new\_character\_tab()] Error: data/mods//Expanded Factions/survivor\_campsite.json: line 33:10: expecting string but found ‘[’
```
"........................",
"........................"
], [
^
{
```
## 10 “terrain”: 10 “m”:“t\_dirtmound”, 10 21:39:10.527 : Log shutdown.
What is the meaning of “string”?
---
### Author:  [@anothersimulacrum](https://discourse.cataclysmdda.org/u/anothersimulacrum)
#### Post date: [October 13, 2019, 1:43am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/8 "2019-10-13T01:43:57Z")
A string is generally text, but it’s just anything enclosed in quotes.
These are all strings:
`"cats"`
`" "`
`""`
`".........................."`
---
### Author:  [@anothersimulacrum](https://discourse.cataclysmdda.org/u/anothersimulacrum)
#### Post date: [October 13, 2019, 1:49am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/9 "2019-10-13T01:49:25Z")
I’d suggest you look at [how other mapgen is done](https://github.com/CleverRaven/Cataclysm-DDA/tree/master/data/json/mapgen), and try to format your files like that.
---
### Author:  [@Minecrafter\_Next\_Gen](https://discourse.cataclysmdda.org/u/Minecrafter_Next_Gen)
#### Post date: [October 13, 2019, 2:30am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/10 "2019-10-13T02:30:22Z")
Okay, I do appreciate all of your aid with this project.
---
### Author:  [@mlangsdorf](https://discourse.cataclysmdda.org/u/mlangsdorf)
#### Post date: [October 13, 2019, 2:58am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/11 "2019-10-13T02:58:03Z")
Also consider reading the [Guide for 1st time contributors](https://github.com/CleverRaven/Cataclysm-DDA/wiki/Guide-to-adding-new-content-to-CDDA-for-first-time-contributors) which includes a brief introduction to JSON and mapgen.
---
### Author:  [@anothersimulacrum](https://discourse.cataclysmdda.org/u/anothersimulacrum)
#### Post date: [October 13, 2019, 4:05am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/12 "2019-10-13T04:05:02Z")
Oh, you’re using the incorrect quotation mark characters, which the JSON reader doesn’t recognize.
`“` and `”` instead of `"`. What are you using to edit this?
Here’s a corrected version
```auto
[
{
"type": "mapgen",
"method": "json",
"om_terrain": ["survivor_campsite"],
"weight": 500,
"object": {
"rows": [
"…",
"…",
"…",
"…",
".mm.mm…##########…",
".mm.mm…#33’’’’’’#…",
".mm.mm…#33’’’’’’#…",
".mm.mm…#’’’’’’’’#…",
".mm.mm…#’’’’’’’’#2…",
".mm.mm…#’’’’’’’’#O…",
".mm.mm…#’’’’’’’’#=…",
".mm.mm…#’’’’’’’’#U…",
"…#####++###…",
"…",
"…",
"…-r-…",
"…-r-…",
"…",
"…-r-…t…t…",
"…-r-…t…",
"…",
"…",
"…",
"…"
],
"terrain": {
"m": "t_dirtmound",
"’": "t_grass",
"+": "t_grass",
"-": "t_dirt",
".": "t_grass",
"b": "t_dirt",
"d": "t_dirt",
"r": "t_dirt",
"t": "t_tree"
},
"furniture": {
"#": "f_canvas_wall",
"’": "f_groundsheet",
"+": "f_canvas_door",
"-": "f_camp_chair",
"b": "f_firering",
"r": "f_tourist_table",
"U": "f_kiln_empty",
"=": "f_smoking_rack",
"O": "f_fvat_empty",
"2": "f_butcher_rack",
"3": "f_bed"
}
}
}
]
```
---
### Author:  [@Minecrafter\_Next\_Gen](https://discourse.cataclysmdda.org/u/Minecrafter_Next_Gen)
#### Post date: [October 14, 2019, 1:04am UTC](https://discourse.cataclysmdda.org/t/aid-with-structures/21666/13 "2019-10-14T01:04:39Z")
Thank you!
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa