solarlune/ldtkgo

LDtk-Go is a loader for LDtk projects written in Golang.

ldtkgo's Issues

Empty Level.Layers when opening a 1.5.3 LDtk project

I might be doing something wrong, but when I open a project, a level's layer list is empty.

I'm using LDtk version 1.5.3.

This is how I use ldtkgo:

p, err := ldtkgo.Open(*projectFilename)
	if err != nil {
		panic(err)
	}

	for _, level := range p.Levels {
		for _, layer := range level.Layers {
			// Never executed because Layers is [].
		}
	}
}

I can confirm that Level fields like Identifier are loaded correctly.

The Level has layers:

	"layerInstances": [
		{
			"__identifier": "BottomTiles",
			"__type": "Tiles",
			"__cWid": 32,
			"__cHei": 20,
			"__gridSize": 16,
			"__opacity": 1,
			"__pxTotalOffsetX": 0,
...

I'm not sure why they're not unmarshalled into the ldtkgo.Level.Layers.

Here is an LDtk project (it's just 1 level and a project file):

test.zip

entity.TileRect points to wrong tileset region when using Tile Property

Ok, so I have a tile setup which looks like this:

The entiy in question is a switch, its sprite is the close switch (red). As long as I had it only that way, it rendered in the game as expected. However, then I added a Tile Property, as can be seen in the screenshot. In the game I load both sprites into different variables, but BOTH now point the SAME region in the tileset. When I render both sprites in the game it looks like this:

When I dump the entity.TileRect without the tile property, I get:

2024-03-31T07:20.13 CEST DEBUG: LOAD TILE /home/scip/dev/openquell/game/levels.go: 188 
    isdoor: false           
    isswitch: true        
    name: Switch          
    tileid: 7d975370-d7b0-11ee-9add-971995295000
    tilerect:             
        x: 96             <== 
        y: 160            <==
        w: 32             
        h: 32             
        tilesetuid: 57  

With the property I get:

2024-03-31T07:17.01 CEST DEBUG: LOAD TILE /home/scip/dev/openquell/game/levels.go: 188 
    isdoor: false   
    isswitch: true         
    name: Switch
    tileid: 7d975370-d7b0-11ee-9add-971995295000
    tilerect:               
        x: 96   <==
        y: 192  <==
        w: 32                   
        h: 32   
        tilesetuid: 57
    tileref: 81e502b0-d7b0-11ee-9add-6193c766edeb
    togglerect:        
        x: 96   <== This is the location of the tile property sprite
        y: 192  <== 
        w: 32          
        h: 32   

This is the tileset:

However, I managed to "fix" this behavior by customizing the Display Setting of the property. By default it's value is Replace entity tile. When I set it like so:

then everything works as expected.

Please correct me if I'm wrong, but in my opinion this is a bug: ldtkgo should not consider the display settings. I think these are meant for the LDTK UI only, not for the resulting game. Now that I know how to circumvent this, it's no real problem. But it took me a while to find.

json: cannot unmarshal string into Go struct field Level.Levels.BGColor of type color.Color

I was trying to load a regular ldtk 0.6.1 file and i got this error :(

Go Version: go1.15.5 linux/amd64
OS: Void Linux Musl
Arch: x86_64

LDTK map file here

nil pointer dereference when calling PropertyByIdentifier with non-existing key

When you call PropertyByIdentifier with a non-existing key, like so:

[..]
system.Print(system.Plan.PropertyByIdentifier("Description").AsString(), 10, 470)
[..]

then you get this:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0x7b8564]

goroutine 34 [running]:
github.com/solarlune/ldtkgo.(*Property).AsString(...)
        /home/scip/go/pkg/mod/github.com/solarlune/[email protected]/ldtkgo.go:54
openquell/systems.(*HudSystem).Draw(0xc0007ce4e0, 0xa4b2f8?)
        /home/scip/dev/openquell/systems/hud_system.go:56 +0x384

Although this was entirely my own fault, I think it would be better to get a proper error message here from the library.

Nevertheless - thanks A LOT for this library, already love it!

best,
Tom ("Bad Kraut")

Where is the raylib example?

Where is the raylib example? I can't find it