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strafe-client/src/load_roblox.rs

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Rust
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use crate::primitives;
use crate::integer::{Planar64,Planar64Vec3,Planar64Mat3,Planar64Affine3};
fn class_is_a(class: &str, superclass: &str) -> bool {
if class==superclass {
return true
}
let class_descriptor=rbx_reflection_database::get().classes.get(class);
if let Some(descriptor) = &class_descriptor {
if let Some(class_super) = &descriptor.superclass {
return class_is_a(&class_super, superclass)
}
}
return false
}
fn recursive_collect_superclass(objects: &mut std::vec::Vec<rbx_dom_weak::types::Ref>,dom: &rbx_dom_weak::WeakDom, instance: &rbx_dom_weak::Instance, superclass: &str){
for &referent in instance.children() {
if let Some(c) = dom.get_by_ref(referent) {
if class_is_a(c.class.as_str(), superclass) {
objects.push(c.referent());//copy ref
}
recursive_collect_superclass(objects,dom,c,superclass);
}
}
}
fn planar64_affine3_from_roblox(cf:&rbx_dom_weak::types::CFrame,size:&rbx_dom_weak::types::Vector3)->Planar64Affine3{
Planar64Affine3::new(
Planar64Mat3::from_cols(
Planar64Vec3::try_from([cf.orientation.x.x,cf.orientation.y.x,cf.orientation.z.x]).unwrap()
*Planar64::try_from(size.x/2.0).unwrap(),
Planar64Vec3::try_from([cf.orientation.x.y,cf.orientation.y.y,cf.orientation.z.y]).unwrap()
*Planar64::try_from(size.y/2.0).unwrap(),
Planar64Vec3::try_from([cf.orientation.x.z,cf.orientation.y.z,cf.orientation.z.z]).unwrap()
*Planar64::try_from(size.z/2.0).unwrap(),
),
Planar64Vec3::try_from([cf.position.x,cf.position.y,cf.position.z]).unwrap()
)
}
fn get_attributes(name:&str,can_collide:bool,velocity:Planar64Vec3,force_intersecting:bool)->crate::model::CollisionAttributes{
let mut general=crate::model::GameMechanicAttributes::default();
let mut intersecting=crate::model::IntersectingAttributes::default();
let mut contacting=crate::model::ContactingAttributes::default();
let mut force_can_collide=can_collide;
match name{
"Water"=>{
force_can_collide=false;
//TODO: read stupid CustomPhysicalProperties
intersecting.water=Some(crate::model::IntersectingWater{density:Planar64::ONE,viscosity:Planar64::ONE/10,velocity});
},
"Accelerator"=>{
//although the new game supports collidable accelerators, this is a roblox compatability map loader
force_can_collide=false;
general.accelerator=Some(crate::model::GameMechanicAccelerator{acceleration:velocity});
},
// "UnorderedCheckpoint"=>general.teleport_behaviour=Some(crate::model::TeleportBehaviour::StageElement(crate::model::GameMechanicStageElement{
// mode_id:0,
// stage_id:0,
// force:false,
// behaviour:crate::model::StageElementBehaviour::Unordered
// })),
"SetVelocity"=>general.trajectory=Some(crate::model::GameMechanicSetTrajectory::Velocity(velocity)),
"MapFinish"=>{force_can_collide=false;general.zone=Some(crate::model::GameMechanicZone{mode_id:0,behaviour:crate::model::ZoneBehaviour::Finish})},
"MapAnticheat"=>{force_can_collide=false;general.zone=Some(crate::model::GameMechanicZone{mode_id:0,behaviour:crate::model::ZoneBehaviour::Anitcheat})},
"Platform"=>general.teleport_behaviour=Some(crate::model::TeleportBehaviour::StageElement(crate::model::GameMechanicStageElement{
mode_id:0,
stage_id:0,
force:false,
behaviour:crate::model::StageElementBehaviour::Platform,
})),
other=>{
if let Some(captures)=lazy_regex::regex!(r"^(Force)?(Spawn|SpawnAt|Trigger|Teleport|Platform)(\d+)$")
.captures(other){
general.teleport_behaviour=Some(crate::model::TeleportBehaviour::StageElement(crate::model::GameMechanicStageElement{
mode_id:0,
stage_id:captures[3].parse::<u32>().unwrap(),
force:match captures.get(1){
Some(m)=>m.as_str()=="Force",
None=>false,
},
behaviour:match &captures[2]{
"Spawn"|"SpawnAt"=>crate::model::StageElementBehaviour::SpawnAt,
//cancollide false so you don't hit the side
//NOT a decoration
"Trigger"=>{force_can_collide=false;crate::model::StageElementBehaviour::Trigger},
"Teleport"=>{force_can_collide=false;crate::model::StageElementBehaviour::Teleport},
"Platform"=>crate::model::StageElementBehaviour::Platform,
_=>panic!("regex1[2] messed up bad"),
}
}));
}else if let Some(captures)=lazy_regex::regex!(r"^(Force)?(Jump)(\d+)$")
.captures(other){
general.teleport_behaviour=Some(crate::model::TeleportBehaviour::StageElement(crate::model::GameMechanicStageElement{
mode_id:0,
stage_id:0,
force:match captures.get(1){
Some(m)=>m.as_str()=="Force",
None=>false,
},
behaviour:match &captures[2]{
"Jump"=>crate::model::StageElementBehaviour::JumpLimit(captures[3].parse::<u32>().unwrap()),
_=>panic!("regex4[1] messed up bad"),
}
}));
}else if let Some(captures)=lazy_regex::regex!(r"^Bonus(Finish|Anticheat)(\d+)$")
.captures(other){
force_can_collide=false;
match &captures[1]{
"Finish"=>general.zone=Some(crate::model::GameMechanicZone{mode_id:captures[2].parse::<u32>().unwrap(),behaviour:crate::model::ZoneBehaviour::Finish}),
"Anticheat"=>general.zone=Some(crate::model::GameMechanicZone{mode_id:captures[2].parse::<u32>().unwrap(),behaviour:crate::model::ZoneBehaviour::Anitcheat}),
_=>panic!("regex2[1] messed up bad"),
}
}else if let Some(captures)=lazy_regex::regex!(r"^(WormholeIn)(\d+)$")
.captures(other){
force_can_collide=false;
match &captures[1]{
"WormholeIn"=>general.teleport_behaviour=Some(crate::model::TeleportBehaviour::Wormhole(crate::model::GameMechanicWormhole{destination_model_id:captures[2].parse::<u32>().unwrap()})),
_=>panic!("regex3[1] messed up bad"),
}
}
// else if let Some(captures)=lazy_regex::regex!(r"^(OrderedCheckpoint)(\d+)$")
// .captures(other){
// match &captures[1]{
// "OrderedCheckpoint"=>general.checkpoint=Some(crate::model::GameMechanicCheckpoint::Ordered{mode_id:0,checkpoint_id:captures[2].parse::<u32>().unwrap()}),
// _=>panic!("regex3[1] messed up bad"),
// }
// }
}
}
//need some way to skip this
if velocity!=Planar64Vec3::ZERO{
general.booster=Some(crate::model::GameMechanicBooster::Velocity(velocity));
}
match force_can_collide{
true=>{
match name{
"Bounce"=>contacting.contact_behaviour=Some(crate::model::ContactingBehaviour::Elastic(u32::MAX)),
"Surf"=>contacting.contact_behaviour=Some(crate::model::ContactingBehaviour::Surf),
"Ladder"=>contacting.contact_behaviour=Some(crate::model::ContactingBehaviour::Ladder(crate::model::ContactingLadder{sticky:true})),
_=>(),
}
crate::model::CollisionAttributes::Contact{contacting,general}
},
false=>if force_intersecting
||general.any()
||intersecting.any()
{
crate::model::CollisionAttributes::Intersect{intersecting,general}
}else{
crate::model::CollisionAttributes::Decoration
},
}
}
struct RobloxAssetId(u64);
struct RobloxAssetIdParseErr;
impl std::str::FromStr for RobloxAssetId {
type Err=RobloxAssetIdParseErr;
fn from_str(s: &str) -> Result<Self, Self::Err>{
let regman=lazy_regex::regex!(r"(\d+)$");
if let Some(captures) = regman.captures(s) {
if captures.len()==2{//captures[0] is all captures concatenated, and then each individual capture
if let Ok(id) = captures[0].parse::<u64>() {
return Ok(Self(id));
}
}
}
Err(RobloxAssetIdParseErr)
}
}
#[derive(Clone,Copy,PartialEq)]
struct RobloxTextureTransform{
offset_u:f32,
offset_v:f32,
scale_u:f32,
scale_v:f32,
}
impl std::cmp::Eq for RobloxTextureTransform{}//????
impl std::default::Default for RobloxTextureTransform{
fn default() -> Self {
Self{offset_u:0.0,offset_v:0.0,scale_u:1.0,scale_v:1.0}
}
}
impl std::hash::Hash for RobloxTextureTransform {
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
self.offset_u.to_ne_bytes().hash(state);
self.offset_v.to_ne_bytes().hash(state);
self.scale_u.to_ne_bytes().hash(state);
self.scale_v.to_ne_bytes().hash(state);
}
}
#[derive(Clone,PartialEq)]
struct RobloxFaceTextureDescription{
texture:u32,
color:glam::Vec4,
transform:RobloxTextureTransform,
}
impl std::cmp::Eq for RobloxFaceTextureDescription{}//????
impl std::hash::Hash for RobloxFaceTextureDescription {
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
self.texture.hash(state);
self.transform.hash(state);
for &el in self.color.as_ref().iter() {
el.to_ne_bytes().hash(state);
}
}
}
impl RobloxFaceTextureDescription{
fn to_face_description(&self)->primitives::FaceDescription{
primitives::FaceDescription{
texture:Some(self.texture),
transform:glam::Affine2::from_translation(
glam::vec2(self.transform.offset_u,self.transform.offset_v)
)
*glam::Affine2::from_scale(
glam::vec2(self.transform.scale_u,self.transform.scale_v)
),
color:self.color,
}
}
}
type RobloxPartDescription=[Option<RobloxFaceTextureDescription>;6];
type RobloxWedgeDescription=[Option<RobloxFaceTextureDescription>;5];
type RobloxCornerWedgeDescription=[Option<RobloxFaceTextureDescription>;5];
#[derive(Clone,Eq,Hash,PartialEq)]
enum RobloxBasePartDescription{
Sphere(RobloxPartDescription),
Part(RobloxPartDescription),
Cylinder(RobloxPartDescription),
Wedge(RobloxWedgeDescription),
CornerWedge(RobloxCornerWedgeDescription),
}
pub fn generate_indexed_models(dom:rbx_dom_weak::WeakDom) -> crate::model::IndexedModelInstances{
//IndexedModelInstances includes textures
let mut spawn_point=Planar64Vec3::ZERO;
let mut indexed_models=Vec::new();
let mut model_id_from_description=std::collections::HashMap::<RobloxBasePartDescription,usize>::new();
let mut texture_id_from_asset_id=std::collections::HashMap::<u64,u32>::new();
let mut asset_id_from_texture_id=Vec::new();
let mut object_refs=Vec::new();
let mut temp_objects=Vec::new();
recursive_collect_superclass(&mut object_refs, &dom, dom.root(),"BasePart");
for object_ref in object_refs {
if let Some(object)=dom.get_by_ref(object_ref){
if let (
Some(rbx_dom_weak::types::Variant::CFrame(cf)),
Some(rbx_dom_weak::types::Variant::Vector3(size)),
Some(rbx_dom_weak::types::Variant::Vector3(velocity)),
Some(rbx_dom_weak::types::Variant::Float32(transparency)),
Some(rbx_dom_weak::types::Variant::Color3uint8(color3)),
Some(rbx_dom_weak::types::Variant::Bool(can_collide)),
) = (
object.properties.get("CFrame"),
object.properties.get("Size"),
object.properties.get("Velocity"),
object.properties.get("Transparency"),
object.properties.get("Color"),
object.properties.get("CanCollide"),
)
{
let model_transform=planar64_affine3_from_roblox(cf,size);
//push TempIndexedAttributes
let mut force_intersecting=false;
let mut temp_indexing_attributes=Vec::new();
if let Some(attr)=match &object.name[..]{
"MapStart"=>{
spawn_point=model_transform.transform_point3(Planar64Vec3::ZERO)+Planar64Vec3::Y*5/2;
Some(crate::model::TempIndexedAttributes::Start(crate::model::TempAttrStart{mode_id:0}))
},
other=>{
let regman=lazy_regex::regex!(r"^(BonusStart|Spawn|ForceSpawn|WormholeOut)(\d+)$");
if let Some(captures) = regman.captures(other) {
match &captures[1]{
"BonusStart"=>Some(crate::model::TempIndexedAttributes::Start(crate::model::TempAttrStart{mode_id:captures[2].parse::<u32>().unwrap()})),
"Spawn"|"ForceSpawn"=>Some(crate::model::TempIndexedAttributes::Spawn(crate::model::TempAttrSpawn{mode_id:0,stage_id:captures[2].parse::<u32>().unwrap()})),
"WormholeOut"=>Some(crate::model::TempIndexedAttributes::Wormhole(crate::model::TempAttrWormhole{wormhole_id:captures[2].parse::<u32>().unwrap()})),
_=>None,
}
}else{
None
}
}
}{
force_intersecting=true;
temp_indexing_attributes.push(attr);
}
//TODO: also detect "CylinderMesh" etc here
let shape=match &object.class[..]{
"Part"=>{
if let Some(rbx_dom_weak::types::Variant::Enum(shape))=object.properties.get("Shape"){
match shape.to_u32(){
0=>primitives::Primitives::Sphere,
1=>primitives::Primitives::Cube,
2=>primitives::Primitives::Cylinder,
3=>primitives::Primitives::Wedge,
4=>primitives::Primitives::CornerWedge,
_=>panic!("Funky roblox PartType={};",shape.to_u32()),
}
}else{
panic!("Part has no Shape!");
}
},
"TrussPart"=>primitives::Primitives::Cube,
"WedgePart"=>primitives::Primitives::Wedge,
"CornerWedgePart"=>primitives::Primitives::CornerWedge,
_=>{
println!("Unsupported BasePart ClassName={}; defaulting to cube",object.class);
primitives::Primitives::Cube
}
};
//use the biggest one and cut it down later...
let mut part_texture_description:RobloxPartDescription=[None,None,None,None,None,None];
temp_objects.clear();
recursive_collect_superclass(&mut temp_objects, &dom, object,"Decal");
for &decal_ref in &temp_objects{
if let Some(decal)=dom.get_by_ref(decal_ref){
if let (
Some(rbx_dom_weak::types::Variant::Content(content)),
Some(rbx_dom_weak::types::Variant::Enum(normalid)),
Some(rbx_dom_weak::types::Variant::Color3(decal_color3)),
Some(rbx_dom_weak::types::Variant::Float32(decal_transparency)),
) = (
decal.properties.get("Texture"),
decal.properties.get("Face"),
decal.properties.get("Color3"),
decal.properties.get("Transparency"),
) {
if let Ok(asset_id)=content.clone().into_string().parse::<RobloxAssetId>(){
let texture_id=if let Some(&texture_id)=texture_id_from_asset_id.get(&asset_id.0){
texture_id
}else{
let texture_id=asset_id_from_texture_id.len() as u32;
texture_id_from_asset_id.insert(asset_id.0,texture_id);
asset_id_from_texture_id.push(asset_id.0);
texture_id
};
let normal_id=normalid.to_u32();
if normal_id<6{
let (roblox_texture_color,roblox_texture_transform)=if decal.class=="Texture"{
//generate tranform
if let (
Some(rbx_dom_weak::types::Variant::Float32(ox)),
Some(rbx_dom_weak::types::Variant::Float32(oy)),
Some(rbx_dom_weak::types::Variant::Float32(sx)),
Some(rbx_dom_weak::types::Variant::Float32(sy)),
) = (
decal.properties.get("OffsetStudsU"),
decal.properties.get("OffsetStudsV"),
decal.properties.get("StudsPerTileU"),
decal.properties.get("StudsPerTileV"),
)
{
let (size_u,size_v)=match normal_id{
0=>(size.z,size.y),//right
1=>(size.x,size.z),//top
2=>(size.x,size.y),//back
3=>(size.z,size.y),//left
4=>(size.x,size.z),//bottom
5=>(size.x,size.y),//front
_=>panic!("unreachable"),
};
(
glam::vec4(decal_color3.r,decal_color3.g,decal_color3.b,1.0-*decal_transparency),
RobloxTextureTransform{
offset_u:*ox/(*sx),offset_v:*oy/(*sy),
scale_u:size_u/(*sx),scale_v:size_v/(*sy),
}
)
}else{
(glam::Vec4::ONE,RobloxTextureTransform::default())
}
}else{
(glam::Vec4::ONE,RobloxTextureTransform::default())
};
part_texture_description[normal_id as usize]=Some(RobloxFaceTextureDescription{
texture:texture_id,
color:roblox_texture_color,
transform:roblox_texture_transform,
});
}else{
println!("NormalId={} unsupported for shape={:?}",normal_id,shape);
}
}
}
}
}
//obscure rust syntax "slice pattern"
let [
f0,//Cube::Right
f1,//Cube::Top
f2,//Cube::Back
f3,//Cube::Left
f4,//Cube::Bottom
f5,//Cube::Front
]=part_texture_description;
let basepart_texture_description=match shape{
primitives::Primitives::Sphere=>RobloxBasePartDescription::Sphere([f0,f1,f2,f3,f4,f5]),
primitives::Primitives::Cube=>RobloxBasePartDescription::Part([f0,f1,f2,f3,f4,f5]),
primitives::Primitives::Cylinder=>RobloxBasePartDescription::Cylinder([f0,f1,f2,f3,f4,f5]),
//use front face texture first and use top face texture as a fallback
primitives::Primitives::Wedge=>RobloxBasePartDescription::Wedge([
f0,//Cube::Right->Wedge::Right
if f5.is_some(){f5}else{f1},//Cube::Front|Cube::Top->Wedge::TopFront
f2,//Cube::Back->Wedge::Back
f3,//Cube::Left->Wedge::Left
f4,//Cube::Bottom->Wedge::Bottom
]),
//TODO: fix Left+Back texture coordinates to match roblox when not overwridden by Top
primitives::Primitives::CornerWedge=>RobloxBasePartDescription::CornerWedge([
f0,//Cube::Right->CornerWedge::Right
if f2.is_some(){f2}else{f1.clone()},//Cube::Back|Cube::Top->CornerWedge::TopBack
if f3.is_some(){f3}else{f1},//Cube::Left|Cube::Top->CornerWedge::TopLeft
f4,//Cube::Bottom->CornerWedge::Bottom
f5,//Cube::Front->CornerWedge::Front
]),
};
//make new model if unit cube has not been created before
let model_id=if let Some(&model_id)=model_id_from_description.get(&basepart_texture_description){
//push to existing texture model
model_id
}else{
let model_id=indexed_models.len();
model_id_from_description.insert(basepart_texture_description.clone(),model_id);//borrow checker going crazy
indexed_models.push(match basepart_texture_description{
RobloxBasePartDescription::Sphere(part_texture_description)
|RobloxBasePartDescription::Cylinder(part_texture_description)
|RobloxBasePartDescription::Part(part_texture_description)=>{
let mut cube_face_description=primitives::CubeFaceDescription::default();
for (face_id,roblox_face_description) in part_texture_description.iter().enumerate(){
cube_face_description.insert(
match face_id{
0=>primitives::CubeFace::Right,
1=>primitives::CubeFace::Top,
2=>primitives::CubeFace::Back,
3=>primitives::CubeFace::Left,
4=>primitives::CubeFace::Bottom,
5=>primitives::CubeFace::Front,
_=>panic!("unreachable"),
},
match roblox_face_description{
Some(roblox_texture_transform)=>roblox_texture_transform.to_face_description(),
None=>primitives::FaceDescription::default(),
});
}
primitives::generate_partial_unit_cube(cube_face_description)
},
RobloxBasePartDescription::Wedge(wedge_texture_description)=>{
let mut wedge_face_description=primitives::WedgeFaceDescription::default();
for (face_id,roblox_face_description) in wedge_texture_description.iter().enumerate(){
wedge_face_description.insert(
match face_id{
0=>primitives::WedgeFace::Right,
1=>primitives::WedgeFace::TopFront,
2=>primitives::WedgeFace::Back,
3=>primitives::WedgeFace::Left,
4=>primitives::WedgeFace::Bottom,
_=>panic!("unreachable"),
},
match roblox_face_description{
Some(roblox_texture_transform)=>roblox_texture_transform.to_face_description(),
None=>primitives::FaceDescription::default(),
});
}
primitives::generate_partial_unit_wedge(wedge_face_description)
},
RobloxBasePartDescription::CornerWedge(cornerwedge_texture_description)=>{
let mut cornerwedge_face_description=primitives::CornerWedgeFaceDescription::default();
for (face_id,roblox_face_description) in cornerwedge_texture_description.iter().enumerate(){
cornerwedge_face_description.insert(
match face_id{
0=>primitives::CornerWedgeFace::Right,
1=>primitives::CornerWedgeFace::TopBack,
2=>primitives::CornerWedgeFace::TopLeft,
3=>primitives::CornerWedgeFace::Bottom,
4=>primitives::CornerWedgeFace::Front,
_=>panic!("unreachable"),
},
match roblox_face_description{
Some(roblox_texture_transform)=>roblox_texture_transform.to_face_description(),
None=>primitives::FaceDescription::default(),
});
}
primitives::generate_partial_unit_cornerwedge(cornerwedge_face_description)
},
});
model_id
};
indexed_models[model_id].instances.push(crate::model::ModelInstance {
transform:model_transform,
color:glam::vec4(color3.r as f32/255f32, color3.g as f32/255f32, color3.b as f32/255f32, 1.0-*transparency),
attributes:get_attributes(&object.name,*can_collide,Planar64Vec3::try_from([velocity.x,velocity.y,velocity.z]).unwrap(),force_intersecting),
temp_indexing:temp_indexing_attributes,
});
}
}
}
crate::model::IndexedModelInstances{
textures:asset_id_from_texture_id.iter().map(|t|t.to_string()).collect(),
models:indexed_models,
spawn_point,
modes:Vec::new(),
}
}
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