How to resolve object tile images in TMX

Questions
1

Hey.
I’m banging my head against the wall and the docs are very spare about the actual mechanism behind the GID magic.

Given I have the isometric map:

<?xml version="1.0" encoding="UTF-8"?>
<map version="1.10" tiledversion="1.11.0" orientation="isometric" renderorder="right-down" width="10" height="10" tilewidth="128" tileheight="64" infinite="0" nextlayerid="4" nextobjectid="6">
 <tileset firstgid="1" source="Isometric128.tsx"/>
 <layer id="1" name="Tiles" width="10" height="10" locked="1">
  <data encoding="csv">
8,8,8,8,8,8,8,8,8,8,
8,5,5,5,5,7,7,7,7,8,
8,5,7,7,7,7,7,7,7,8,
8,5,5,7,7,7,7,7,7,8,
8,7,7,7,7,7,7,3,7,8,
8,7,7,7,7,8,5,7,7,8,
8,7,7,7,7,8,5,7,7,8,
8,7,7,7,7,8,5,7,7,8,
8,7,7,7,7,8,7,7,7,8,
8,8,8,8,8,8,8,8,8,8
</data>
 </layer>
 <objectgroup id="2" name="Objects">
  <object id="2" template="templates/StartPositionTile.tx" name="Start2" type="Start2" x="128" y="448"/>
  <object id="5" template="templates/StartPositionTile.tx" type="Start" x="128" y="320"/>
  <object id="4" name="Caca" type="Poop" gid="6" x="192" y="256" width="128" height="128"/>
 </objectgroup>
</map>

And a tileset:

<?xml version="1.0" encoding="UTF-8"?>
<tileset version="1.10" tiledversion="1.11.0" name="Isometric128" tilewidth="128" tileheight="128" tilecount="6" columns="0">
 <grid orientation="orthogonal" width="1" height="1"/>
 <tile id="0">
  <image source="../../assets/characters/robot_e_lg.png" width="128" height="97"/>
 </tile>
 <tile id="2">
  <image source="../../assets/tiles/wall1_lg.png" width="128" height="128"/>
 </tile>
 <tile id="4">
  <image source="../../assets/tiles/grass1_lg.png" width="128" height="64"/>
 </tile>
 <tile id="5">
  <image source="../../assets/tiles/wall2_lg.png" width="128" height="128"/>
 </tile>
 <tile id="6">
  <image source="../../assets/tiles/grass2_lg.png" width="128" height="64"/>
 </tile>
 <tile id="7">
  <image source="../../assets/tiles/wall3_lg.png" width="128" height="128"/>
 </tile>
</tileset>

And an object template:

<?xml version="1.0" encoding="UTF-8"?>
<template>
 <tileset firstgid="1" source="../Isometric128.tsx"/>
 <object name="Start" type="Start" gid="1" width="128" height="97"/>
</template>

All 3 objects are images from tiles.

How is one supposed to figure out which tile maps to which object?

Thanks :slight_smile:

2

The documentation for this is at Global Tile IDs — Tiled 1.11.0 documentation.

In short, if your tileset has firstgid="1", then the tile with id="0" will have global ID 1 (1+0). So your object template with gid="1" is referring to tile 0 from your tileset.