basic wormholes (no velocity or camera transformation)

src/bvh.rs

@@ -12,12 +12,12 @@ use crate::aabb::Aabb;
 #[derive(Default)]
 pub struct BvhNode{
 	children:Vec<Self>,
-	models:Vec<u32>,
+	models:Vec<usize>,
 	aabb:Aabb,
 }
 
 impl BvhNode{
-	pub fn the_tester<F:FnMut(u32)>(&self,aabb:&Aabb,f:&mut F){
+	pub fn the_tester<F:FnMut(usize)>(&self,aabb:&Aabb,f:&mut F){
 		for &model in &self.models{
 			f(model);
 		}
@@ -37,7 +37,7 @@ fn generate_bvh_node(boxen:Vec<(usize,Aabb)>)->BvhNode{
 	let n=boxen.len();
 	if n<20{
 		let mut aabb=Aabb::default();
-		let models=boxen.into_iter().map(|b|{aabb.join(&b.1);b.0 as u32}).collect();
+		let models=boxen.into_iter().map(|b|{aabb.join(&b.1);b.0}).collect();
 		BvhNode{
 			children:Vec::new(),
 			models,

src/integer.rs

@@ -531,7 +531,14 @@ impl std::ops::Mul<Planar64> for Planar64{
 	type Output=Planar64;
 	#[inline]
 	fn mul(self, rhs: Self) -> Self::Output {
-		Planar64((((self.0 as i128)*(rhs.0 as i128))>>32) as i64)
+		Planar64(((self.0 as i128*rhs.0 as i128)>>32) as i64)
+	}
+}
+impl std::ops::Mul<Time> for Planar64{
+	type Output=Planar64;
+	#[inline]
+	fn mul(self,rhs:Time)->Self::Output{
+		Planar64(((self.0 as i128*rhs.0 as i128)/1_000_000_000) as i64)
 	}
 }
 impl std::ops::Div<i64> for Planar64{
@@ -574,6 +581,10 @@ impl Planar64Vec3{
 		Self(glam::i64vec3((x as i64)<<32,(y as i64)<<32,(z as i64)<<32))
 	}
 	#[inline]
+	pub const fn raw(x:i64,y:i64,z:i64)->Self{
+		Self(glam::i64vec3(x,y,z))
+	}
+	#[inline]
 	pub fn x(&self)->Planar64{
 		Planar64(self.0.x)
 	}
@@ -808,6 +819,23 @@ impl Planar64Mat3{
 		}
 	}
 	#[inline]
+	pub fn from_rotation_yx(yaw:Angle32,pitch:Angle32)->Self{
+		let xtheta=yaw.0 as f64*ANGLE32_TO_FLOAT64_RADIANS;
+		let (xs,xc)=xtheta.sin_cos();
+		let (xc,xs)=(xc*PLANAR64_ONE_FLOAT64,xs*PLANAR64_ONE_FLOAT64);
+		let ytheta=pitch.0 as f64*ANGLE32_TO_FLOAT64_RADIANS;
+		let (ys,yc)=ytheta.sin_cos();
+		let (yc,ys)=(yc*PLANAR64_ONE_FLOAT64,ys*PLANAR64_ONE_FLOAT64);
+		//TODO: fix this rounding towards 0
+		let (xc,xs):(i64,i64)=(unsafe{xc.to_int_unchecked()},unsafe{xs.to_int_unchecked()});
+		let (yc,ys):(i64,i64)=(unsafe{yc.to_int_unchecked()},unsafe{ys.to_int_unchecked()});
+		Self::from_cols(
+			Planar64Vec3(glam::i64vec3(xc,0,-xs)),
+			Planar64Vec3(glam::i64vec3(((xs as i128*ys as i128)>>32) as i64,yc,((xc as i128*ys as i128)>>32) as i64)),
+			Planar64Vec3(glam::i64vec3(((xs as i128*yc as i128)>>32) as i64,-ys,((xc as i128*yc as i128)>>32) as i64)),
+		)
+	}
+	#[inline]
 	pub fn from_rotation_y(angle:Angle32)->Self{
 		let theta=angle.0 as f64*ANGLE32_TO_FLOAT64_RADIANS;
 		let (s,c)=theta.sin_cos();

src/load_roblox.rs

@@ -50,8 +50,17 @@ fn get_attributes(name:&str,can_collide:bool,velocity:Planar64Vec3,force_interse
 	let mut contacting=crate::model::ContactingAttributes::default();
 	let mut force_can_collide=can_collide;
 	match name{
-		"Water"=>intersecting.water=Some(crate::model::IntersectingWater{density:Planar64::ONE,viscosity:Planar64::ONE/10,current:velocity}),
-		"Accelerator"=>{force_can_collide=false;intersecting.accelerator=Some(crate::model::IntersectingAccelerator{acceleration:velocity})},
+		"Water"=>{
+			force_can_collide=false;
+			//TODO: read stupid CustomPhysicalProperties
+			intersecting.water=Some(crate::model::IntersectingWater{density:Planar64::ONE,viscosity:Planar64::ONE/10,current: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});
+		},
+		"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{
@@ -72,12 +81,28 @@ fn get_attributes(name:&str,can_collide:bool,velocity:Planar64Vec3,force_interse
 					},
 					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;
@@ -86,39 +111,33 @@ fn get_attributes(name:&str,can_collide:bool,velocity:Planar64Vec3,force_interse
 					"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+)$")
+			.captures(other){
+				force_can_collide=false;
+				match &captures[1]{
+					"WormholeIn"=>general.teleport_behaviour=Some(crate::model::TeleportBehaviour::Wormhole(crate::model::GameMechanicWormhole{destination_model_id:captures[2].parse::<u32>().unwrap()})),
+					_=>panic!("regex3[1] messed up bad"),
+				}
 			}
 		}
 	}
 	//need some way to skip this
 	if velocity!=Planar64Vec3::ZERO{
-		general.booster=Some(crate::model::GameMechanicBooster{velocity});
+		general.booster=Some(crate::model::GameMechanicBooster::Velocity(velocity));
 	}
 	match force_can_collide{
 		true=>{
 			match name{
-				"Bounce"=>contacting.elasticity=Some(u32::MAX),
-				"Surf"=>contacting.surf=Some(crate::model::ContactingSurf{}),
-				"Ladder"=>contacting.ladder=Some(crate::model::ContactingLadder{sticky:true}),
-				other=>{
-					if let Some(captures)=lazy_regex::regex!(r"^(Jump|WormholeIn)(\d+)$")
-					.captures(other){
-						match &captures[1]{
-							"Jump"=>general.jump_limit=Some(crate::model::GameMechanicJumpLimit{count:captures[2].parse::<u32>().unwrap()}),
-							"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"),
-						}
-					}
-				}
+				"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.jump_limit.is_some()
-		||general.booster.is_some()
-		||general.zone.is_some()
-		||general.teleport_behaviour.is_some()
-		||intersecting.water.is_some()
-		||intersecting.accelerator.is_some()
+		||general.any()
+		||intersecting.any()
 		{
 			crate::model::CollisionAttributes::Intersect{intersecting,general}
 		}else{
@@ -244,16 +263,17 @@ pub fn generate_indexed_models(dom:rbx_dom_weak::WeakDom) -> crate::model::Index
 				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{mode_id:0})
+						Some(crate::model::TempIndexedAttributes::Start(crate::model::TempAttrStart{mode_id:0}))
 					},
-					"UnorderedCheckpoint"=>Some(crate::model::TempIndexedAttributes::UnorderedCheckpoint{mode_id:0}),
+					"UnorderedCheckpoint"=>Some(crate::model::TempIndexedAttributes::UnorderedCheckpoint(crate::model::TempAttrUnorderedCheckpoint{mode_id:0})),
 					other=>{
-						let regman=lazy_regex::regex!(r"^(BonusStart|Spawn|ForceSpawn|OrderedCheckpoint)(\d+)$");
+						let regman=lazy_regex::regex!(r"^(BonusStart|Spawn|ForceSpawn|OrderedCheckpoint|WormholeOut)(\d+)$");
 						if let Some(captures) = regman.captures(other) {
 							match &captures[1]{
-								"BonusStart"=>Some(crate::model::TempIndexedAttributes::Start{mode_id:captures[2].parse::<u32>().unwrap()}),
-								"Spawn"|"ForceSpawn"=>Some(crate::model::TempIndexedAttributes::Spawn{mode_id:0,stage_id:captures[2].parse::<u32>().unwrap()}),
-								"OrderedCheckpoint"=>Some(crate::model::TempIndexedAttributes::OrderedCheckpoint{mode_id:0,checkpoint_id:captures[2].parse::<u32>().unwrap()}),
+								"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()})),
+								"OrderedCheckpoint"=>Some(crate::model::TempIndexedAttributes::OrderedCheckpoint(crate::model::TempAttrOrderedCheckpoint{mode_id:0,checkpoint_id:captures[2].parse::<u32>().unwrap()})),
+								"WormholeOut"=>Some(crate::model::TempIndexedAttributes::Wormhole(crate::model::TempAttrWormhole{wormhole_id:captures[2].parse::<u32>().unwrap()})),
 								_=>None,
 							}
 						}else{

src/main.rs

@@ -234,6 +234,10 @@ impl GlobalState{
 					})
 				}
 			}).collect();
+			//skip pushing a model if all instances are invisible
+			if instances.len()==0{
+				continue;
+			}
 			//check each group, if it's using a new texture then make a new clone of the model
 			let id=unique_texture_models.len();
 			let mut unique_textures=Vec::new();
@@ -301,27 +305,24 @@ impl GlobalState{
 				model_instance_list.push((model_id,instance_id));
 			}
 		}
-		//populate a hashmap of models selected for transposition
+		//populate a hashset of models selected for transposition
+		//construct transposed models
 		let mut selected_model_instances=std::collections::HashSet::new();
 		for (texture,unique_color) in unique_texture_color.into_iter(){
 			for (color,model_instance_list) in unique_color.into_iter(){
+				//world transforming one model does not meet the definition of deduplicaiton
 				if 1<model_instance_list.len(){
 					//create model
 					let mut unique_pos=Vec::new();
 					let mut pos_id_from=std::collections::HashMap::new();
-					let mut map_pos_id=std::collections::HashMap::new();
 					let mut unique_tex=Vec::new();
 					let mut tex_id_from=std::collections::HashMap::new();
-					let mut map_tex_id=std::collections::HashMap::new();
 					let mut unique_normal=Vec::new();
 					let mut normal_id_from=std::collections::HashMap::new();
-					let mut map_normal_id=std::collections::HashMap::new();
 					let mut unique_color=Vec::new();
 					let mut color_id_from=std::collections::HashMap::new();
-					let mut map_color_id=std::collections::HashMap::new();
 					let mut unique_vertices=Vec::new();
 					let mut vertex_id_from=std::collections::HashMap::new();
-					let mut map_vertex_id=std::collections::HashMap::new();
 
 					let mut polys=Vec::new();
 					//transform instance vertices
@@ -332,78 +333,73 @@ impl GlobalState{
 						let model=&unique_texture_models[model_id];
 						let instance=&model.instances[instance_id];
 						//just hash word slices LOL
-						for (old_pos_id,untransformed_pos) in model.unique_pos.iter().enumerate(){
+						let map_pos_id:Vec<u32>=model.unique_pos.iter().map(|untransformed_pos|{
 							let pos=instance.transform.transform_point3(glam::Vec3::from_array(untransformed_pos.clone())).to_array();
-							let h=pos.map(|v|u32::from_ne_bytes(v.to_ne_bytes()));
-							let pos_id=if let Some(&pos_id)=pos_id_from.get(&h){
+							let h=pos.map(|v|bytemuck::cast::<f32,u32>(v));
+							(if let Some(&pos_id)=pos_id_from.get(&h){
 								pos_id
 							}else{
 								let pos_id=unique_pos.len();
 								unique_pos.push(pos.clone());
 								pos_id_from.insert(h,pos_id);
 								pos_id
-							};
-							map_pos_id.insert(old_pos_id,pos_id);
-						}
-						for (old_tex_id,tex) in model.unique_tex.iter().enumerate(){
-							let h=tex.map(|v|u32::from_ne_bytes(v.to_ne_bytes()));
-							let tex_id=if let Some(&tex_id)=tex_id_from.get(&h){
+							}) as u32
+						}).collect();
+						let map_tex_id:Vec<u32>=model.unique_tex.iter().map(|tex|{
+							let h=tex.map(|v|bytemuck::cast::<f32,u32>(v));
+							(if let Some(&tex_id)=tex_id_from.get(&h){
 								tex_id
 							}else{
 								let tex_id=unique_tex.len();
 								unique_tex.push(tex.clone());
 								tex_id_from.insert(h,tex_id);
 								tex_id
-							};
-							map_tex_id.insert(old_tex_id,tex_id);
-						}
-						for (old_normal_id,untransformed_normal) in model.unique_normal.iter().enumerate(){
+							}) as u32
+						}).collect();
+						let map_normal_id:Vec<u32>=model.unique_normal.iter().map(|untransformed_normal|{
 							let normal=(instance.normal_transform*glam::Vec3::from_array(untransformed_normal.clone())).to_array();
-							let h=normal.map(|v|u32::from_ne_bytes(v.to_ne_bytes()));
-							let normal_id=if let Some(&normal_id)=normal_id_from.get(&h){
+							let h=normal.map(|v|bytemuck::cast::<f32,u32>(v));
+							(if let Some(&normal_id)=normal_id_from.get(&h){
 								normal_id
 							}else{
 								let normal_id=unique_normal.len();
 								unique_normal.push(normal.clone());
 								normal_id_from.insert(h,normal_id);
 								normal_id
-							};
-							map_normal_id.insert(old_normal_id,normal_id);
-						}
-						for (old_color_id,color) in model.unique_color.iter().enumerate(){
-							let h=color.map(|v|u32::from_ne_bytes(v.to_ne_bytes()));
-							let color_id=if let Some(&color_id)=color_id_from.get(&h){
+							}) as u32
+						}).collect();
+						let map_color_id:Vec<u32>=model.unique_color.iter().map(|color|{
+							let h=color.map(|v|bytemuck::cast::<f32,u32>(v));
+							(if let Some(&color_id)=color_id_from.get(&h){
 								color_id
 							}else{
 								let color_id=unique_color.len();
 								unique_color.push(color.clone());
 								color_id_from.insert(h,color_id);
 								color_id
-							};
-							map_color_id.insert(old_color_id,color_id);
-						}
+							}) as u32
+						}).collect();
 						//map the indexed vertices onto new indices
 						//creating the vertex map is slightly different because the vertices are directly hashable
-						for (old_vertex_id,unmapped_vertex) in model.unique_vertices.iter().enumerate(){
+						let map_vertex_id:Vec<u32>=model.unique_vertices.iter().map(|unmapped_vertex|{
 							let vertex=model::IndexedVertex{
-								pos:map_pos_id[&(unmapped_vertex.pos as usize)] as u32,
-								tex:map_tex_id[&(unmapped_vertex.tex as usize)] as u32,
-								normal:map_normal_id[&(unmapped_vertex.normal as usize)] as u32,
-								color:map_color_id[&(unmapped_vertex.color as usize)] as u32,
+								pos:map_pos_id[unmapped_vertex.pos as usize] as u32,
+								tex:map_tex_id[unmapped_vertex.tex as usize] as u32,
+								normal:map_normal_id[unmapped_vertex.normal as usize] as u32,
+								color:map_color_id[unmapped_vertex.color as usize] as u32,
 							};
-							let vertex_id=if let Some(&vertex_id)=vertex_id_from.get(&vertex){
+							(if let Some(&vertex_id)=vertex_id_from.get(&vertex){
 								vertex_id
 							}else{
 								let vertex_id=unique_vertices.len();
 								unique_vertices.push(vertex.clone());
 								vertex_id_from.insert(vertex,vertex_id);
 								vertex_id
-							};
-							map_vertex_id.insert(old_vertex_id as u32,vertex_id as u32);
-						}
+							}) as u32
+						}).collect();
 						for group in &model.groups{
 							for poly in &group.polys{
-								polys.push(model::IndexedPolygon{vertices:poly.vertices.iter().map(|vertex_id|map_vertex_id[vertex_id]).collect()});
+								polys.push(model::IndexedPolygon{vertices:poly.vertices.iter().map(|&vertex_id|map_vertex_id[vertex_id as usize]).collect()});
 							}
 						}
 					}
@@ -427,7 +423,6 @@ impl GlobalState{
 				}
 			}
 		}
-		//construct transposed models
 		//fill untouched models
 		for (model_id,model) in unique_texture_models.into_iter().enumerate(){
 			if !selected_model_instances.contains(&model_id){
@@ -436,8 +431,8 @@ impl GlobalState{
 		}
 
 		//de-index models
-		let mut models=Vec::with_capacity(indexed_models_len);
-		for model in deduplicated_models.into_iter(){
+		let deduplicated_models_len=deduplicated_models.len();
+		let models:Vec<model_graphics::ModelGraphicsSingleTexture>=deduplicated_models.into_iter().map(|model|{
 			let mut vertices = Vec::new();
 			let mut index_from_vertex = std::collections::HashMap::new();//::<IndexedVertex,usize>
 			let mut entities = Vec::new();
@@ -467,13 +462,13 @@ impl GlobalState{
 				}
 			}
 				entities.push(indices);
-			models.push(model_graphics::ModelGraphicsSingleTexture{
+			model_graphics::ModelGraphicsSingleTexture{
 				instances:model.instances,
 				vertices,
 				entities,
 				texture:model.texture,
-			});
-		}
+			}
+		}).collect();
 		//.into_iter() the modeldata vec so entities can be /moved/ to models.entities
 		let mut model_count=0;
 		let mut instance_count=0;
@@ -545,6 +540,7 @@ impl GlobalState{
 		println!("Texture References={}",num_textures);
 		println!("Textures Loaded={}",texture_views.len());
 		println!("Indexed Models={}",indexed_models_len);
+		println!("Deduplicated Models={}",deduplicated_models_len);
 		println!("Graphics Objects: {}",self.graphics.models.len());
 		println!("Graphics Instances: {}",instance_count);
 	}
@@ -935,7 +931,7 @@ impl framework::Example for GlobalState {
 		let screen_size=glam::uvec2(config.width,config.height);
 
 		let camera=GraphicsCamera::new(screen_size,user_settings.calculate_fov(1.0,&screen_size).as_vec2());
-		let camera_uniforms = camera.to_uniform_data(physics.output().adjust_mouse(&physics.next_mouse));
+		let camera_uniforms = camera.to_uniform_data(physics.output().adjust_mouse(&physics::MouseState::default()));
 		let camera_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
 			label: Some("Camera"),
 			contents: bytemuck::cast_slice(&camera_uniforms),
@@ -1067,6 +1063,7 @@ impl framework::Example for GlobalState {
 					self.graphics.clear();
 
 					let mut physics=physics::PhysicsState::default();
+					//physics.spawn()
 					physics.game.stage_id=0;
 					physics.spawn_point=spawn_point;
 					physics.process_instruction(instruction::TimedInstruction{

src/model.rs

@@ -1,4 +1,4 @@
-use crate::integer::{Planar64,Planar64Vec3,Planar64Affine3};
+use crate::integer::{Time,Planar64,Planar64Vec3,Planar64Affine3};
 pub type TextureCoordinate=glam::Vec2;
 pub type Color4=glam::Vec4;
 #[derive(Clone,Hash,PartialEq,Eq)]
@@ -50,53 +50,63 @@ pub struct IndexedModelInstances{
 }
 //stage description referencing flattened ids is spooky, but the map loading is meant to be deterministic.
 pub struct ModeDescription{
-	pub start:u32,//start=model_id
-	pub spawns:Vec<u32>,//spawns[spawn_id]=model_id
-	pub ordered_checkpoints:Vec<u32>,//ordered_checkpoints[checkpoint_id]=model_id
-	pub unordered_checkpoints:Vec<u32>,//unordered_checkpoints[checkpoint_id]=model_id
+	pub start:usize,//start=model_id
+	pub spawns:Vec<usize>,//spawns[spawn_id]=model_id
+	pub ordered_checkpoints:Vec<usize>,//ordered_checkpoints[checkpoint_id]=model_id
+	pub unordered_checkpoints:Vec<usize>,//unordered_checkpoints[checkpoint_id]=model_id
 	pub spawn_from_stage_id:std::collections::HashMap::<u32,usize>,
 	pub ordered_checkpoint_from_checkpoint_id:std::collections::HashMap::<u32,usize>,
 }
 impl ModeDescription{
-	pub fn get_spawn_model_id(&self,stage_id:u32)->Option<&u32>{
-		if let Some(&spawn)=self.spawn_from_stage_id.get(&stage_id){
-			self.spawns.get(spawn)
-		}else{
-			None
-		}
+	pub fn get_spawn_model_id(&self,stage_id:u32)->Option<&usize>{
+		self.spawns.get(*self.spawn_from_stage_id.get(&stage_id)?)
 	}
-	pub fn get_ordered_checkpoint_model_id(&self,checkpoint_id:u32)->Option<&u32>{
-		if let Some(&checkpoint)=self.ordered_checkpoint_from_checkpoint_id.get(&checkpoint_id){
-			self.ordered_checkpoints.get(checkpoint)
-		}else{
-			None
-		}
+	pub fn get_ordered_checkpoint_model_id(&self,checkpoint_id:u32)->Option<&usize>{
+		self.ordered_checkpoints.get(*self.ordered_checkpoint_from_checkpoint_id.get(&checkpoint_id)?)
 	}
 }
+//I don't want this code to exist!
+#[derive(Clone)]
+pub struct TempAttrStart{
+	pub mode_id:u32,
+}
+#[derive(Clone)]
+pub struct TempAttrSpawn{
+	pub mode_id:u32,
+	pub stage_id:u32,
+}
+#[derive(Clone)]
+pub struct TempAttrOrderedCheckpoint{
+	pub mode_id:u32,
+	pub checkpoint_id:u32,
+}
+#[derive(Clone)]
+pub struct TempAttrUnorderedCheckpoint{
+	pub mode_id:u32,
+}
+#[derive(Clone)]
+pub struct TempAttrWormhole{
+	pub wormhole_id:u32,
+}
 pub enum TempIndexedAttributes{
-	Start{
-		mode_id:u32,
-	},
-	Spawn{
-		mode_id:u32,
-		stage_id:u32,
-	},
-	OrderedCheckpoint{
-		mode_id:u32,
-		checkpoint_id:u32,
-	},
-	UnorderedCheckpoint{
-		mode_id:u32,
-	},
+	Start(TempAttrStart),
+	Spawn(TempAttrSpawn),
+	OrderedCheckpoint(TempAttrOrderedCheckpoint),
+	UnorderedCheckpoint(TempAttrUnorderedCheckpoint),
+	Wormhole(TempAttrWormhole),
 }
 
 //you have this effect while in contact
 #[derive(Clone)]
-pub struct ContactingSurf{}
-#[derive(Clone)]
 pub struct ContactingLadder{
 	pub sticky:bool
 }
+#[derive(Clone)]
+pub enum ContactingBehaviour{
+    Surf,
+    Ladder(ContactingLadder),
+    Elastic(u32),//[1/2^32,1] 0=None (elasticity+1)/2^32
+}
 //you have this effect while intersecting
 #[derive(Clone)]
 pub struct IntersectingWater{
@@ -104,18 +114,37 @@ pub struct IntersectingWater{
 	pub density:Planar64,
 	pub current:Planar64Vec3,
 }
-#[derive(Clone)]
-pub struct IntersectingAccelerator{
-	pub acceleration:Planar64Vec3
-}
 //All models can be given these attributes
 #[derive(Clone)]
-pub struct GameMechanicJumpLimit{
-	pub count:u32,
+pub struct GameMechanicAccelerator{
+	pub acceleration:Planar64Vec3
 }
 #[derive(Clone)]
-pub struct GameMechanicBooster{
-	pub velocity:Planar64Vec3,
+pub enum GameMechanicBooster{
+	Affine(Planar64Affine3),//capable of SetVelocity,DotVelocity,normal booster,bouncy part,redirect velocity, and much more
+	Velocity(Planar64Vec3),//straight up boost velocity adds to your current velocity
+	Energy{direction:Planar64Vec3,energy:Planar64},//increase energy in direction
+}
+#[derive(Clone)]
+pub enum TrajectoryChoice{
+	HighArcLongDuration,//underhand lob at target: less horizontal speed and more air time
+	LowArcShortDuration,//overhand throw at target: more horizontal speed and less air time
+}
+#[derive(Clone)]
+pub enum GameMechanicSetTrajectory{
+	AirTime(Time),//air time (relative to gravity direction) is invariant across mass and gravity changes
+	Height(Planar64),//boost height (relative to gravity direction) is invariant across mass and gravity changes
+	TargetPointTime{//launch on a trajectory that will land at a target point in a set amount of time
+		target_point:Planar64Vec3,
+		time:Time,//short time = fast and direct, long time = launch high in the air, negative time = wrong way
+	},
+	TrajectoryTargetPoint{//launch at a fixed speed and land at a target point
+		target_point:Planar64Vec3,
+		speed:Planar64,//if speed is too low this will fail to reach the target.  The closest-passing trajectory will be chosen instead
+		trajectory_choice:TrajectoryChoice,
+	},
+	Velocity(Planar64Vec3),//SetVelocity
+	DotVelocity{direction:Planar64Vec3,dot:Planar64},//set your velocity in a specific direction without touching other directions
 }
 #[derive(Clone)]
 pub enum ZoneBehaviour{
@@ -130,10 +159,10 @@ pub struct GameMechanicZone{
 	pub behaviour:ZoneBehaviour,
 }
 // enum TrapCondition{
-// 	FasterThan(i64),
-// 	SlowerThan(i64),
-// 	InRange(i64,i64),
-// 	OutsideRange(i64,i64),
+// 	FasterThan(Planar64),
+// 	SlowerThan(Planar64),
+// 	InRange(Planar64,Planar64),
+// 	OutsideRange(Planar64,Planar64),
 // }
 #[derive(Clone)]
 pub enum StageElementBehaviour{
@@ -142,6 +171,7 @@ pub enum StageElementBehaviour{
  	Trigger,
  	Teleport,
  	Platform,
+ 	JumpLimit(u32),
  	//Speedtrap(TrapCondition),//Acts as a trigger with a speed condition
 }
 #[derive(Clone)]
@@ -164,24 +194,42 @@ pub enum TeleportBehaviour{
 	StageElement(GameMechanicStageElement),
 	Wormhole(GameMechanicWormhole),
 }
+//attributes listed in order of handling
 #[derive(Default,Clone)]
 pub struct GameMechanicAttributes{
-	pub jump_limit:Option<GameMechanicJumpLimit>,
-	pub booster:Option<GameMechanicBooster>,
 	pub zone:Option<GameMechanicZone>,
+	pub booster:Option<GameMechanicBooster>,
+	pub trajectory:Option<GameMechanicSetTrajectory>,
 	pub teleport_behaviour:Option<TeleportBehaviour>,
+	pub accelerator:Option<GameMechanicAccelerator>,
+}
+impl GameMechanicAttributes{
+	pub fn any(&self)->bool{
+		self.booster.is_some()
+		||self.trajectory.is_some()
+		||self.zone.is_some()
+		||self.teleport_behaviour.is_some()
+		||self.accelerator.is_some()
+	}
 }
 #[derive(Default,Clone)]
 pub struct ContactingAttributes{
-	pub elasticity:Option<u32>,//[1/2^32,1] 0=None (elasticity+1)/2^32
 	//friction?
-	pub surf:Option<ContactingSurf>,
-	pub ladder:Option<ContactingLadder>,
+	pub contact_behaviour:Option<ContactingBehaviour>,
+}
+impl ContactingAttributes{
+	pub fn any(&self)->bool{
+		self.contact_behaviour.is_some()
+	}
 }
 #[derive(Default,Clone)]
 pub struct IntersectingAttributes{
 	pub water:Option<IntersectingWater>,
-	pub accelerator:Option<IntersectingAccelerator>,
+}
+impl IntersectingAttributes{
+	pub fn any(&self)->bool{
+		self.water.is_some()
+	}
 }
 //Spawn(u32) NO! spawns are indexed in the map header instead of marked with attibutes
 pub enum CollisionAttributes{

src/model_graphics.rs

@@ -42,7 +42,7 @@ impl From<glam::Vec4> for ModelGraphicsColor4{
 impl std::hash::Hash for ModelGraphicsColor4{
 	fn hash<H: std::hash::Hasher>(&self,state:&mut H) {
 		for &f in self.0.as_ref(){
-			u32::from_ne_bytes(f.to_ne_bytes()).hash(state);
+			bytemuck::cast::<f32,u32>(f).hash(state);
 		}
 	}
 }

src/primitives.rs

@@ -174,7 +174,7 @@ pub fn unit_cornerwedge()->crate::model::IndexedModel{
 	generate_partial_unit_cornerwedge(t)
 }
 
-#[derive(Copy,Clone)]
+#[derive(Clone)]
 pub struct FaceDescription{
 	pub texture:Option<u32>,
 	pub transform:glam::Affine2,