ABC v6 export #25

Five-Damned-Dollarz · 2021-02-14T07:20:10Z

Could use some optimization on the export still, but should be 100% functional right now.
Your armature needs to be rotated [90, 0, 0], and scaled [-1, 1, -1] for the export to look correct.
You need to "calculate inside" in Blender to wind the triangles correctly (at least that's what has worked reliably for me).

Known Issues

Using scaling will export incorrect bounding boxes.

Complete

Geometry, normals, UV map
Skeletal animation
Vertex animation
Bounding boxes

In Progress

Not Started

Lithtech 1.5 TransformInfo

…ion.

Added frame timing fix for vertex animations, but Blender is not equipped to separate them into actions, so they just get all mixed together in the same lane.

…or now

…asonable

…t works and we can separate actions. Has a small issue where the first frames of each animation can kind of merge.

…erging of first frames. Following the convention in the original tools, exporter now ignores d_ prefixed actions. These will be reserved for vertex animations. Added get_framerate() to utils, so there's a single place to get the framerate constant.

Spelling correction for is_vertex_animation.

…rt->export tends to create garbled triangle messes. Shouldn't interfere with skeletal-only exports.

…one on export, but are still body horror. Added a lame hack to preserve neutral pose of the mesh.

…ittle bit off. Almost there!

With that, we're feature complete - on to optimizing, bug finding/fixing, etc.

Five-Damned-Dollarz · 2021-03-04T06:15:05Z

This should be complete now, ~~unless I've somehow missed a huge bug~~ except for a small bug that affects some vertex animated nodes that puts them a little off. Seems to be consistent, but I don't have a method to replicate it in a fresh .blend yet.
There's at least one derpy workaround in there, and the export process could probably be optimized, but as far as I can see it works great. Importing then exporting an original game file looks virtually identical (except for bounding boxes, which I try to create as best I can from the geometry).
The one thing I'm concerned about is node bounding boxes, since I haven't found any debug commands in Blood 2 to display them on models, I can't be sure they're correct. We can make changes easily enough in the future if it becomes clear they need fixing.

Edit (21/08/17): just for reference for myself/anyone later, the node bounding boxes do not matter! The engine doesn't use them, or expose them to the server/client code at all. They can be ignored entirely for LithTech 1 use.

Started documenting model/engine links.

haekb

At some point github jammed up because I was adding too many suggestions. Please use spaces (and fix the ones I didn't suggest toooo!)

Aside from that, I didn't notice any breakage from abc v12 -> lta export. So it's good to go.

haekb · 2021-03-14T02:59:49Z

src/abc.py

@@ -71,6 +71,9 @@ class Face(object):
    def __init__(self):
        self.vertices = []

+        # ABCv6 specific
+        self.normal=Vector()


Suggested change

self.normal=Vector()

self.normal = Vector()

haekb · 2021-03-14T03:00:00Z

src/abc.py

@@ -138,9 +141,12 @@ def __init__(self):
        self.child_count = 0

        # Version 6 specific
+        self.bounds_min=Vector()


Suggested change

self.bounds_min=Vector()

self.bounds_min = Vector()

haekb · 2021-03-14T03:00:08Z

src/abc.py

@@ -138,9 +141,12 @@ def __init__(self):
        self.child_count = 0

        # Version 6 specific
+        self.bounds_min=Vector()
+        self.bounds_max=Vector()


Suggested change

self.bounds_max=Vector()

self.bounds_max = Vector()

haekb · 2021-03-14T03:00:17Z

src/abc.py

@@ -197,17 +203,19 @@ def __init__(self):
        self.node_keyframe_transforms = []

        # Version 6 specific
-
+        self.bounds_min=Vector()


Suggested change

self.bounds_min=Vector()

self.bounds_min = Vector()

haekb · 2021-03-14T03:00:23Z

src/abc.py

@@ -197,17 +203,19 @@ def __init__(self):
        self.node_keyframe_transforms = []

        # Version 6 specific
-
+        self.bounds_min=Vector()
+        self.bounds_max=Vector()


Suggested change

self.bounds_max=Vector()

self.bounds_max = Vector()

haekb · 2021-03-14T03:24:12Z

src/builder.py

+                    animation.vertex_deformations[node]=[]
+
+                    # get all vertices for this node
+                    node_vertices=[vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index==node_index]


Suggested change

node_vertices=[vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index==node_index]

node_vertices = [vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index == node_index]

haekb · 2021-03-14T03:24:24Z

src/builder.py

+                    # get all vertices for this node
+                    node_vertices=[vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index==node_index]
+
+                    node.bounds_min=Vector((float("inf"), float("inf"), float("inf")))


Suggested change

node.bounds_min=Vector((float("inf"), float("inf"), float("inf")))

node.bounds_min = Vector((float("inf"), float("inf"), float("inf")))

haekb · 2021-03-14T03:24:33Z

src/builder.py

+                    node_vertices=[vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index==node_index]
+
+                    node.bounds_min=Vector((float("inf"), float("inf"), float("inf")))
+                    node.bounds_max=Vector((float("-inf"), float("-inf"), float("-inf")))


Suggested change

node.bounds_max=Vector((float("-inf"), float("-inf"), float("-inf")))

node.bounds_max = Vector((float("-inf"), float("-inf"), float("-inf")))

haekb · 2021-03-14T03:24:59Z

src/builder.py

+                        for vertex_index in node_vertices:
+                            temp_vert=shape_keys[keyframe_index].data[vertex_index]
+
+                            #if not temp_vert.co==mesh.shape_keys.key_blocks[0].data[vertex_index].co:


You can probably remove this now

haekb · 2021-03-14T03:25:33Z

src/builder.py


        ''' AnimBindings '''
        anim_binding = AnimBinding()
        anim_binding.name = 'base'
-        animation.extents = Vector((10, 10, 10))
+        anim_binding.extents = Vector((10, 10, 10))


Some minor documentation changes, added more model/engine link information.

Five-Damned-Dollarz · 2021-03-14T11:35:30Z

At some point github jammed up because I was adding too many suggestions. Please use spaces (and fix the ones I didn't suggest toooo!)

Aside from that, I didn't notice any breakage from abc v12 -> lta export. So it's good to go.

I fixed as many as I could find, hopefully that's everything.

There is still one bug with the vertex animated node exporting with a slightly off rotation in rare animations, but it happens so infrequently in my experience that we could just make an issue for it, and hunt it later (with more information, hopefully, I have no idea where it comes from yet)

haekb · 2021-03-14T20:49:46Z

Cool beans, thanks. If you could just open a github issue about that, so we don't forget, that'll be greeeeat.

Five-Damned-Dollarz added 19 commits February 14, 2021 17:53

Added ABC v6 export, includes mesh, UVs, normals, and skeletal animat…

a526330

…ion.

Fix for ABC v6 frames getting rounded out of existence during import.

33828be

Fixes exporting non-integer subframes

288a898

Disgusting hack for flagging null/triangle nodes

046f392

Fixed first animation's first frame importing incorrect bone rotations

621c95c

Fixed models with TransformInfo section not flipping correctly.

13d8f34

Added frame timing fix for vertex animations, but Blender is not equipped to separate them into actions, so they just get all mixed together in the same lane.

Fixed exported normals, reverted flip conditional to previous state f…

1c7fbaa

…or now

Improved exported bounding boxes, still not perfect but definitely re…

d5fd3b9

…asonable

Fixed animation collision bounding boxes being way too big

eb31467

Fixed collision bounding boxes being assigned to the wrong animation

7a6fd44

Further refinement to bounding box calculations

12b7e78

ABC v6 importer now supports vertex animation! It's a bit ugly, but i…

d73e737

…t works and we can separate actions. Has a small issue where the first frames of each animation can kind of merge.

get_framerate() now uses scene framerate.

2ec7689

Spelling correction for is_vertex_animation.

Started implementing vertex animation export. Far from complete, impo…

31e97ec

…rt->export tends to create garbled triangle messes. Shouldn't interfere with skeletal-only exports.

Adds some basic documentation about creating new ABCv6 models

87c62df

Vertex animations are now positioned correctly in relation to their b…

857421a

…one on export, but are still body horror. Added a lame hack to preserve neutral pose of the mesh.

Now exports the correct vertex animation frames, scaling is still a l…

600c58a

…ittle bit off. Almost there!

Vertex animation exports should now be scaled and translated correctly!

80fe9b8

With that, we're feature complete - on to optimizing, bug finding/fixing, etc.

Five-Damned-Dollarz added 3 commits March 4, 2021 18:01

Quick fix for exporting non-vertex animated nodes

d4353ec

Added some vertex animation documentation.

b4a0601

Started documenting model/engine links.

Formatting fixes

3f5ad69

haekb requested changes Mar 14, 2021

View reviewed changes

Five-Damned-Dollarz added 2 commits March 14, 2021 22:14

Requested formatting fixes.

9318a53

Some minor documentation changes, added more model/engine link information.

Straggler formatting

363d774

haekb approved these changes Mar 14, 2021

View reviewed changes

haekb changed the title ~~[WIP] ABC v6 export~~ ABC v6 export Mar 14, 2021

haekb merged commit f534b02 into haekb:master Mar 14, 2021

This was referenced Mar 14, 2021

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ABC v6 export #25

ABC v6 export #25

Five-Damned-Dollarz commented Feb 14, 2021 •

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Five-Damned-Dollarz commented Mar 14, 2021

haekb commented Mar 14, 2021

	node_vertices=[vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index==node_index]
	node_vertices = [vertex_index for vertex_index, vertex in enumerate(model.pieces[0].lods[0].vertices) if vertex.weights[0].node_index == node_index]

	node.bounds_min=Vector((float("inf"), float("inf"), float("inf")))
	node.bounds_min = Vector((float("inf"), float("inf"), float("inf")))

	node.bounds_max=Vector((float("-inf"), float("-inf"), float("-inf")))
	node.bounds_max = Vector((float("-inf"), float("-inf"), float("-inf")))

ABC v6 export #25

ABC v6 export #25

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Five-Damned-Dollarz commented Feb 14, 2021 • edited Loading

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Five-Damned-Dollarz commented Mar 14, 2021

haekb commented Mar 14, 2021

Five-Damned-Dollarz commented Feb 14, 2021 •

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Five-Damned-Dollarz commented Mar 4, 2021 •

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