Making a tileset

Gokudomatic

HI, I'm back!During my holidays I was busy preparing a pack of tiles to be used in a gridmap. Since the task is quite new for me, I spend some time in attempts to make a mesh library. And I don't know if it's a limitation of the gridmap, but only MeshInstances seem to be imported in the gridmap. And even if I group multiple meshes under a spatial node, the meshes are splitted again. It looks like I can't have tiles made of multiple meshes. Did some of you already a 3d tileset for gridmap with average complexity? Sure that a tileset made of only planes and textures works well, like in the 3d platformer demo, but it's usually not enough in a real game. Do you have some tips to share?If needed, I can share the blend scene that I want to convert in a gridmap library.

Schuster

[quote]3d tileset for gridmap with average complexity?[/quote].....like this? :)[img width=750 height=515]http://godotdevelopers.org/index.php?action=dlattach;topic=15617.0;attach=2322;image[/img]

Gokudomatic

No, more complex than that. It can be tiles with more than one mesh in them. And the origin of the mesh wasn't the origin of the tile. And the meshes are more than just one quad, even for simple walls.I currently worked around my problem by joining meshes in blender and set the origin to the center of the tile. When there are only mesh instances the converter seems happy.The only thing I noticed is that I see a small gap between tiles, even though the size of the meshes in blender are perfectly filling the size of the tile. It looks like I have to make the mesh a tiny bit larger than the tile size.

Schuster

It may be interesting, can you upload here some picture of how it looks? I've not tried to do something too complex with tilesets.

Gokudomatic

Sorry for the delay. I'm still in middle of adding collision in my tileset.There are screenshots of the tiles I'm working on.[url=http://pix.toile-libre.org/?img=1466244784.png][img width=451 height=360]http://pix.toile-libre.org/upload/img/1466244784.png[/img][/url][url=http://pix.toile-libre.org/?img=1466244816.png][img width=480 height=330]http://pix.toile-libre.org/upload/img/1466244816.png[/img][/url]Note: those are assets from fps creator classic, opensourced and free to use in other projects (as long as we don't make packs from it).

Gokudomatic

Alright. I've more or less my tileset, with collisions working fine. For some reason, there's still a gap between tiles. But the big problem is that's very big in memory, with 300 objects. It takes 5 seconds or so to load. That's a bit too long. Is there some way to optimize this? And if I make a large map with this tileset, would it be extra big?

Schuster

Maybe somehow set the LOD and divide the tilesets on the groups?

Gokudomatic

[quote author=Bishop link=topic=15617.msg16887#msg16887 date=1466862712]Maybe somehow set the LOD and divide the tilesets on the groups?[/quote]LOD would only help to render faster, and I think the gridmap doesn't handle that. The gridmap is very limited and accept only meshes+collision+navmesh.Leaves only to divide the tilesets.About the gap, I found my solution in Blender. It seems that Blender doesn't display properly very small numbers, like 2.00000000000001. And when it's a 3d Vector of a mesh, that makes a gap. But Python in Blender does see the difference. So I wrote a nifty little script to round the position of all vertices of all selected objects. And that fixed my problem.This script does assume the tiles are of a whole number size and the vertices at the border have coordinates with integer value (no decimal). Precision can be given for irregular borders, but it is only really effective for precision=0.[code]import bpyimport bmeshdef work1():    precision=0 # set the decimal precision you want. But do it for precision=0 too for the borders    C = bpy.context    if C.mode != 'OBJECT':        return    if len(C.selected_objects) < 1:        print("Must have at least one object selected")        return    selected_objects = [ o for o in bpy.context.scene.objects if o.select ]    for o in selected_objects:        bpy.ops.object.select_all(action='DESELECT')        if o.type != 'MESH':            continue                o.select=True        C.scene.objects.active=o        bpy.ops.object.mode_set(mode='EDIT')        bpy.ops.mesh.select_all(action='SELECT')        bm = bmesh.from_edit_mesh(bpy.context.active_object.data)        selected_verts = [vert for vert in bm.verts if vert.select]        for o in selected_verts:            #o.location[2]=round(o.location[2])            pos=o.co            for i in range(3):                dist=abs(pos[i]-round(pos[i],precision))                # all vertices                 if dist < 0.00001 and dist != 0:                    pos[i]=round(pos[i],precision)                        bpy.ops.object.mode_set(mode='OBJECT')    for o in selected_objects:        o.select=True    work1()[/code]

Schuster

Yes, maybe sometime in the future releases we will see improvements to 3d gridmaps.The script is perfect, great work,very useful.Maybe if you had the time, so put here a simple procedure with this script?