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5 changed files with 80 additions and 457 deletions

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@ -1,338 +0,0 @@
use crate::instruction::{InstructionEmitter, InstructionConsumer, TimedInstruction};
pub enum PhysicsInstruction {
CollisionStart(RelativeCollision),
CollisionEnd(RelativeCollision),
StrafeTick,
Jump,
SetWalkTargetVelocity(glam::Vec3),
ReachWalkTargetVelocity,
// Water,
// Spawn(
// Option<SpawnId>,
// bool,//true = Trigger; false = teleport
// bool,//true = Force
// )
}
pub struct Body {
position: glam::Vec3,//I64 where 2^32 = 1 u
velocity: glam::Vec3,//I64 where 2^32 = 1 u/s
acceleration: glam::Vec3,//I64 where 2^32 = 1 u/s/s
time: TIME,//nanoseconds x xxxxD!
}
pub enum MoveRestriction {
Air,
Water,
Ground,
Ladder,//multiple ladders how
}
pub struct PhysicsState {
pub body: Body,
pub contacts: Vec<RelativeCollision>,
//temp
pub models_cringe_clone: Vec<Model>,
pub temp_control_dir: glam::Vec3,
pub time: TIME,
pub strafe_tick_num: TIME,
pub strafe_tick_den: TIME,
pub tick: u32,
pub mv: f32,
pub walkspeed: f32,
pub friction: f32,
pub walk_target_velocity: glam::Vec3,
pub gravity: glam::Vec3,
pub grounded: bool,
pub jump_trying: bool,
}
#[derive(Clone,Copy)]
pub enum AabbFace{
Right,//+X
Top,
Back,
Left,
Bottom,
Front,
}
pub struct Aabb {
min: glam::Vec3,
max: glam::Vec3,
}
impl Aabb {
// const FACE_DATA: [[f32; 3]; 6] = [
// [0.0f32, 0., 1.],
// [0.0f32, 0., -1.],
// [1.0f32, 0., 0.],
// [-1.0f32, 0., 0.],
// [0.0f32, 1., 0.],
// [0.0f32, -1., 0.],
// ];
const VERTEX_DATA_RIGHT: [glam::Vec3; 4] = [
glam::vec3(1., -1., -1.),
glam::vec3(1., 1., -1.),
glam::vec3(1., 1., 1.),
glam::vec3(1., -1., 1.),
];
const VERTEX_DATA_TOP: [glam::Vec3; 4] = [
glam::vec3(1., 1., -1.),
glam::vec3(-1., 1., -1.),
glam::vec3(-1., 1., 1.),
glam::vec3(1., 1., 1.),
];
const VERTEX_DATA_BACK: [glam::Vec3; 4] = [
glam::vec3(-1., -1., 1.),
glam::vec3(1., -1., 1.),
glam::vec3(1., 1., 1.),
glam::vec3(-1., 1., 1.),
];
const VERTEX_DATA_LEFT: [glam::Vec3; 4] = [
glam::vec3(-1., -1., 1.),
glam::vec3(-1., 1., 1.),
glam::vec3(-1., 1., -1.),
glam::vec3(-1., -1., -1.),
];
const VERTEX_DATA_BOTTOM: [glam::Vec3; 4] = [
glam::vec3(1., -1., 1.),
glam::vec3(-1., -1., 1.),
glam::vec3(-1., -1., -1.),
glam::vec3(1., -1., -1.),
];
const VERTEX_DATA_FRONT: [glam::Vec3; 4] = [
glam::vec3(-1., 1., -1.),
glam::vec3(1., 1., -1.),
glam::vec3(1., -1., -1.),
glam::vec3(-1., -1., -1.),
];
pub fn new() -> Self {
Self {min: glam::Vec3::INFINITY,max: glam::Vec3::NEG_INFINITY}
}
pub fn grow(&mut self, point:glam::Vec3){
self.min=self.min.min(point);
self.max=self.max.max(point);
}
pub fn normal(face:AabbFace) -> glam::Vec3 {
match face {
AabbFace::Right => glam::vec3(1.,0.,0.),
AabbFace::Top => glam::vec3(0.,1.,0.),
AabbFace::Back => glam::vec3(0.,0.,1.),
AabbFace::Left => glam::vec3(-1.,0.,0.),
AabbFace::Bottom => glam::vec3(0.,-1.,0.),
AabbFace::Front => glam::vec3(0.,0.,-1.),
}
}
pub fn face_vertices(face:AabbFace) -> [glam::Vec3;4] {
match face {
AabbFace::Right => Self::VERTEX_DATA_RIGHT,
AabbFace::Top => Self::VERTEX_DATA_TOP,
AabbFace::Back => Self::VERTEX_DATA_BACK,
AabbFace::Left => Self::VERTEX_DATA_LEFT,
AabbFace::Bottom => Self::VERTEX_DATA_BOTTOM,
AabbFace::Front => Self::VERTEX_DATA_FRONT,
}
}
}
type Face = AabbFace;
type TreyMesh = Aabb;
pub struct Model {
//A model is a thing that has a hitbox. can be represented by a list of TreyMesh-es
//in this iteration, all it needs is extents.
transform: glam::Mat4,
}
impl Model {
pub fn new(transform:glam::Mat4) -> Self {
Self{transform}
}
pub fn face_vertices(&self,face:Face) -> [glam::Vec3;4] {
Aabb::face_vertices(face)
}
pub fn face_mesh(&self,face:Face) -> TreyMesh {
let mut aabb=Aabb::new();
for &vertex in self.face_vertices(face).iter() {
aabb.grow(vertex);
}
return aabb;
}
pub fn face_normal(&self,face:Face) -> glam::Vec3 {
let mut n=glam::Vec3Swizzles::xyzz(Aabb::normal(face));
n.w=0.0;//what a man will do to avoid writing out the components
glam::Vec4Swizzles::xyz(self.transform*n)//this is wrong for scale
}
}
pub struct RelativeCollision {
face: Face,//just an id
model: u32,//using id to avoid lifetimes
}
impl RelativeCollision {
pub fn mesh(&self,models:&Vec<Model>) -> TreyMesh {
return models.get(self.model as usize).unwrap().face_mesh(self.face)
}
pub fn normal(&self,models:&Vec<Model>) -> glam::Vec3 {
return models.get(self.model as usize).unwrap().face_normal(self.face)
}
}
pub type TIME = i64;
impl Body {
pub fn with_position(position:glam::Vec3) -> Self {
Self{
position: position,
velocity: glam::Vec3::ZERO,
acceleration: glam::Vec3::ZERO,
time: 0,
}
}
pub fn extrapolated_position(&self,time: TIME)->glam::Vec3{
let dt=(time-self.time) as f64/1_000_000_000f64;
self.position+self.velocity*(dt as f32)+self.acceleration*((0.5*dt*dt) as f32)
}
pub fn advance_time(&mut self, time: TIME){
self.position=self.extrapolated_position(time);
self.time=time;
}
}
impl PhysicsState {
//tickless gaming
pub fn run(&mut self, time: TIME){
//prepare is ommitted - everything is done via instructions.
while let Some(instruction) = self.next_instruction(time) {//collect
//advance
//self.advance_time(instruction.time);
//process
self.process_instruction(instruction);
//write hash lol
}
}
pub fn advance_time(&mut self, time: TIME){
self.body.advance_time(time);
self.time=time;
}
fn next_strafe_instruction(&self) -> Option<TimedInstruction<PhysicsInstruction>> {
return Some(TimedInstruction{
time:(self.time*self.strafe_tick_num/self.strafe_tick_den+1)*self.strafe_tick_den/self.strafe_tick_num,
//only poll the physics if there is a before and after mouse event
instruction:PhysicsInstruction::StrafeTick
});
}
//state mutated on collision:
//Accelerator
//stair step-up
//state mutated on instruction
//change fly acceleration (fly_sustain)
//change fly velocity
//generic event emmiters
//PlatformStandTime
//walk/swim/air/ladder sounds
//VState?
//falling under the map
// fn next_respawn_instruction(&self) -> Option<TimedInstruction<PhysicsInstruction>> {
// if self.body.position<self.world.min_y {
// return Some(TimedInstruction{
// time:self.time,
// instruction:PhysicsInstruction::Trigger(None)
// });
// }
// }
// fn next_water_instruction(&self) -> Option<TimedInstruction<PhysicsInstruction>> {
// return Some(TimedInstruction{
// time:(self.time*self.strafe_tick_num/self.strafe_tick_den+1)*self.strafe_tick_den/self.strafe_tick_num,
// //only poll the physics if there is a before and after mouse event
// instruction:PhysicsInstruction::Water
// });
// }
fn next_walk_instruction(&self) -> Option<TimedInstruction<PhysicsInstruction>> {
//check if you are accelerating towards a walk target velocity and create an instruction
return None;
}
fn predict_collision_end(&self,model:&Model) -> Option<TimedInstruction<PhysicsInstruction>> {
//must treat cancollide false objects differently: you may not exit through the same face you entered.
None
}
fn predict_collision_start(&self,model:&Model) -> Option<TimedInstruction<PhysicsInstruction>> {
None
}
}
impl crate::instruction::InstructionEmitter<PhysicsInstruction> for PhysicsState {
//this little next instruction function can cache its return value and invalidate the cached value by watching the State.
fn next_instruction(&self,time_limit:TIME) -> Option<TimedInstruction<PhysicsInstruction>> {
//JUST POLLING!!! NO MUTATION
let mut collector = crate::instruction::InstructionCollector::new(time_limit);
//autohop (already pressing spacebar; the signal to begin trying to jump is different)
if self.grounded&&self.jump_trying {
//scroll will be implemented with InputInstruction::Jump(true) but it blocks setting self.jump_trying=true
collector.collect(Some(TimedInstruction{
time:self.time,
instruction:PhysicsInstruction::Jump
}));
}
//check for collision stop instructions with curent contacts
for collision_data in self.contacts.iter() {
collector.collect(self.predict_collision_end(self.models_cringe_clone.get(collision_data.model as usize).unwrap()));
}
//check for collision start instructions (against every part in the game with no optimization!!)
for model in &self.models_cringe_clone {
collector.collect(self.predict_collision_start(model));
}
if self.grounded {
//walk maintenance
collector.collect(self.next_walk_instruction());
}else{
//check to see when the next strafe tick is
collector.collect(self.next_strafe_instruction());
}
collector.instruction()
}
}
impl crate::instruction::InstructionConsumer<PhysicsInstruction> for PhysicsState {
fn process_instruction(&mut self, ins:TimedInstruction<PhysicsInstruction>) {
//mutate position and velocity and time
self.advance_time(ins.time);//should this be in run?
match ins.instruction {
PhysicsInstruction::CollisionStart(_) => todo!(),
PhysicsInstruction::CollisionEnd(_) => todo!(),
PhysicsInstruction::StrafeTick => {
//let control_dir=self.get_control_dir();//this should respect your mouse interpolation settings
let d=self.body.velocity.dot(self.temp_control_dir);
if d<self.mv {
self.body.velocity+=(self.mv-d)*self.temp_control_dir;
}
}
PhysicsInstruction::Jump => {
self.grounded=false;//do I need this?
self.body.velocity+=glam::Vec3::new(0.0,0.715588/2.0*100.0,0.0);
}
PhysicsInstruction::ReachWalkTargetVelocity => {
//precisely set velocity
self.body.velocity=self.walk_target_velocity;
}
PhysicsInstruction::SetWalkTargetVelocity(v) => {
self.walk_target_velocity=v;
//calculate acceleration yada yada
},
}
}
}

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@ -1,47 +0,0 @@
pub struct TimedInstruction<I> {
pub time: crate::body::TIME,
pub instruction: I,
}
pub trait InstructionEmitter<I> {
fn next_instruction(&self, time:crate::body::TIME) -> Option<TimedInstruction<I>>;
}
pub trait InstructionConsumer<I> {
fn process_instruction(&mut self, instruction:TimedInstruction<I>);
}
//PROPER PRIVATE FIELDS!!!
pub struct InstructionCollector<I> {
time: crate::body::TIME,
instruction: Option<I>,
}
impl<I> InstructionCollector<I> {
pub fn new(time:crate::body::TIME) -> Self {
Self{
time,
instruction:None
}
}
pub fn collect(&mut self,instruction:Option<TimedInstruction<I>>){
match instruction {
Some(unwrap_instruction) => {
if unwrap_instruction.time<self.time {
self.time=unwrap_instruction.time;
self.instruction=Some(unwrap_instruction.instruction);
}
},
None => (),
}
}
pub fn instruction(self) -> Option<TimedInstruction<I>> {
//STEAL INSTRUCTION AND DESTROY INSTRUCTIONCOLLECTOR
match self.instruction {
Some(instruction)=>Some(TimedInstruction{
time:self.time,
instruction
}),
None => None,
}
}
}

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@ -1,3 +1 @@
pub mod framework; pub mod framework;
pub mod body;
pub mod instruction;

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@ -24,7 +24,7 @@ struct ModelData {
entities: Vec<Entity>, entities: Vec<Entity>,
} }
struct ModelGraphics { struct Model {
transform: glam::Mat4, transform: glam::Mat4,
vertex_buf: wgpu::Buffer, vertex_buf: wgpu::Buffer,
entities: Vec<Entity>, entities: Vec<Entity>,
@ -34,12 +34,20 @@ struct ModelGraphics {
// Note: we use the Y=up coordinate space in this example. // Note: we use the Y=up coordinate space in this example.
struct Camera { struct Camera {
time: Instant,
pos: glam::Vec3,
vel: glam::Vec3,
gravity: glam::Vec3,
friction: f32,
screen_size: (u32, u32), screen_size: (u32, u32),
offset: glam::Vec3, offset: glam::Vec3,
fov: f32, fov: f32,
yaw: f32, yaw: f32,
pitch: f32, pitch: f32,
controls: u32, controls: u32,
mv: f32,
grounded: bool,
walkspeed: f32,
} }
const CONTROL_MOVEFORWARD:u32 = 0b00000001; const CONTROL_MOVEFORWARD:u32 = 0b00000001;
@ -92,7 +100,7 @@ fn get_control_dir(controls: u32) -> glam::Vec3{
} }
impl Camera { impl Camera {
fn to_uniform_data(&self, pos: glam::Vec3) -> [f32; 16 * 3 + 4] { fn to_uniform_data(&self) -> [f32; 16 * 3 + 4] {
let aspect = self.screen_size.0 as f32 / self.screen_size.1 as f32; let aspect = self.screen_size.0 as f32 / self.screen_size.1 as f32;
let fov = if self.controls&CONTROL_ZOOM==0 { let fov = if self.controls&CONTROL_ZOOM==0 {
self.fov self.fov
@ -101,7 +109,7 @@ impl Camera {
}; };
let proj = perspective_rh(fov, aspect, 0.5, 1000.0); let proj = perspective_rh(fov, aspect, 0.5, 1000.0);
let proj_inv = proj.inverse(); let proj_inv = proj.inverse();
let view = glam::Mat4::from_translation(pos+self.offset) * glam::Mat4::from_euler(glam::EulerRot::YXZ, self.yaw, self.pitch, 0f32); let view = glam::Mat4::from_translation(self.pos+self.offset) * glam::Mat4::from_euler(glam::EulerRot::YXZ, self.yaw, self.pitch, 0f32);
let view_inv = view.inverse(); let view_inv = view.inverse();
let mut raw = [0f32; 16 * 3 + 4]; let mut raw = [0f32; 16 * 3 + 4];
@ -114,15 +122,13 @@ impl Camera {
} }
pub struct Skybox { pub struct Skybox {
start_time: std::time::Instant,
camera: Camera, camera: Camera,
physics: strafe_client::body::PhysicsState,
sky_pipeline: wgpu::RenderPipeline, sky_pipeline: wgpu::RenderPipeline,
entity_pipeline: wgpu::RenderPipeline, entity_pipeline: wgpu::RenderPipeline,
ground_pipeline: wgpu::RenderPipeline, ground_pipeline: wgpu::RenderPipeline,
main_bind_group: wgpu::BindGroup, main_bind_group: wgpu::BindGroup,
camera_buf: wgpu::Buffer, camera_buf: wgpu::Buffer,
models: Vec<ModelGraphics>, models: Vec<Model>,
depth_view: wgpu::TextureView, depth_view: wgpu::TextureView,
staging_belt: wgpu::util::StagingBelt, staging_belt: wgpu::util::StagingBelt,
} }
@ -284,67 +290,28 @@ impl strafe_client::framework::Example for Skybox {
}); });
let camera = Camera { let camera = Camera {
time: Instant::now(),
pos: glam::Vec3::new(5.0,0.0,5.0),
vel: glam::Vec3::new(0.0,0.0,0.0),
gravity: glam::Vec3::new(0.0,-100.0,0.0),
friction: 90.0,
screen_size: (config.width, config.height), screen_size: (config.width, config.height),
offset: glam::Vec3::new(0.0,4.5,0.0), offset: glam::Vec3::new(0.0,4.5,0.0),
fov: 1.0, //fov_slope = tan(fov_y/2) fov: 1.0, //fov_slope = tan(fov_y/2)
pitch: 0.0, pitch: 0.0,
yaw: 0.0, yaw: 0.0,
controls:0,
};
let physics = strafe_client::body::PhysicsState {
body: strafe_client::body::Body::with_position(glam::Vec3::new(5.0,5.0,5.0)),
time: 0,
tick: 0,
strafe_tick_num: 100,//100t
strafe_tick_den: 1_000_000_000,
gravity: glam::Vec3::new(0.0,-100.0,0.0),
friction: 90.0,
mv: 2.7, mv: 2.7,
grounded: false, controls:0,
jump_trying: false, grounded: true,
temp_control_dir: glam::Vec3::ZERO,
walkspeed: 18.0, walkspeed: 18.0,
contacts: Vec::<strafe_client::body::RelativeCollision>::new(),
models_cringe_clone: modeldatas.iter().map(|m|strafe_client::body::Model::new(m.transform)).collect(),
walk_target_velocity: glam::Vec3::ZERO,
}; };
let camera_uniforms = camera.to_uniform_data();
let camera_uniforms = camera.to_uniform_data(physics.body.extrapolated_position(0));
let camera_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor { let camera_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Camera"), label: Some("Camera"),
contents: bytemuck::cast_slice(&camera_uniforms), contents: bytemuck::cast_slice(&camera_uniforms),
usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST, usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
}); });
//drain the modeldata vec so entities can be /moved/ to models.entities
let mut models = Vec::<ModelGraphics>::with_capacity(modeldatas.len());
for (i,modeldata) in modeldatas.drain(..).enumerate() {
let model_uniforms = get_transform_uniform_data(&modeldata.transform);
let model_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some(format!("ModelGraphics{}",i).as_str()),
contents: bytemuck::cast_slice(&model_uniforms),
usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
});
let model_bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
layout: &model_bind_group_layout,
entries: &[
wgpu::BindGroupEntry {
binding: 0,
resource: model_buf.as_entire_binding(),
},
],
label: Some(format!("ModelGraphics{}",i).as_str()),
});
//all of these are being moved here
models.push(ModelGraphics{
transform: modeldata.transform,
vertex_buf:modeldata.vertex_buf,
entities: modeldata.entities,
bind_group: model_bind_group,
model_buf,
})
}
let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor { let pipeline_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
label: None, label: None,
bind_group_layouts: &[&main_bind_group_layout, &model_bind_group_layout], bind_group_layouts: &[&main_bind_group_layout, &model_bind_group_layout],
@ -540,12 +507,39 @@ impl strafe_client::framework::Example for Skybox {
label: Some("Camera"), label: Some("Camera"),
}); });
//drain the modeldata vec so entities can be /moved/ to models.entities
let mut models = Vec::<Model>::with_capacity(modeldatas.len());
for (i,modeldata) in modeldatas.drain(..).enumerate() {
let model_uniforms = get_transform_uniform_data(&modeldata.transform);
let model_buf = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some(format!("Model{}",i).as_str()),
contents: bytemuck::cast_slice(&model_uniforms),
usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
});
let model_bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
layout: &model_bind_group_layout,
entries: &[
wgpu::BindGroupEntry {
binding: 0,
resource: model_buf.as_entire_binding(),
},
],
label: Some(format!("Model{}",i).as_str()),
});
//all of these are being moved here
models.push(Model{
transform: modeldata.transform,
vertex_buf:modeldata.vertex_buf,
entities: modeldata.entities,
bind_group: model_bind_group,
model_buf,
})
}
let depth_view = Self::create_depth_texture(config, device); let depth_view = Self::create_depth_texture(config, device);
Skybox { Skybox {
start_time: Instant::now(),
camera, camera,
physics,
sky_pipeline, sky_pipeline,
entity_pipeline, entity_pipeline,
ground_pipeline, ground_pipeline,
@ -631,20 +625,44 @@ impl strafe_client::framework::Example for Skybox {
queue: &wgpu::Queue, queue: &wgpu::Queue,
_spawner: &strafe_client::framework::Spawner, _spawner: &strafe_client::framework::Spawner,
) { ) {
let time = Instant::now();
//physique
let dt=(time-self.camera.time).as_secs_f32();
self.camera.time=time;
let camera_mat=glam::Mat3::from_euler(glam::EulerRot::YXZ,self.camera.yaw,0f32,0f32); let camera_mat=glam::Mat3::from_euler(glam::EulerRot::YXZ,self.camera.yaw,0f32,0f32);
let control_dir=camera_mat*get_control_dir(self.camera.controls&(CONTROL_MOVELEFT|CONTROL_MOVERIGHT|CONTROL_MOVEFORWARD|CONTROL_MOVEBACK)).normalize_or_zero(); let control_dir=camera_mat*get_control_dir(self.camera.controls&(CONTROL_MOVELEFT|CONTROL_MOVERIGHT|CONTROL_MOVEFORWARD|CONTROL_MOVEBACK)).normalize_or_zero();
let d=self.camera.vel.dot(control_dir);
let time=self.start_time.elapsed().as_nanos() as i64; if d<self.camera.mv {
self.camera.vel+=(self.camera.mv-d)*control_dir;
self.physics.temp_control_dir=control_dir; }
self.physics.jump_trying=self.camera.controls&CONTROL_JUMP!=0; self.camera.vel+=self.camera.gravity*dt;
self.physics.run(time); self.camera.pos+=self.camera.vel*dt;
if self.camera.pos.y<0.0{
self.camera.pos.y=0.0;
self.camera.vel.y=0.0;
self.camera.grounded=true;
}
if self.camera.grounded&&(self.camera.controls&CONTROL_JUMP)!=0 {
self.camera.grounded=false;
self.camera.vel+=glam::Vec3::new(0.0,0.715588/2.0*100.0,0.0);
}
if self.camera.grounded {
let applied_friction=self.camera.friction*dt;
let targetv=control_dir*self.camera.walkspeed;
let diffv=targetv-self.camera.vel;
if applied_friction*applied_friction<diffv.length_squared() {
self.camera.vel+=applied_friction*diffv.normalize();
} else {
self.camera.vel=targetv;
}
}
let mut encoder = let mut encoder =
device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None }); device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
// update rotation // update rotation
let camera_uniforms = self.camera.to_uniform_data(self.physics.body.extrapolated_position(time)); let camera_uniforms = self.camera.to_uniform_data();
self.staging_belt self.staging_belt
.write_buffer( .write_buffer(
&mut encoder, &mut encoder,

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@ -1,8 +0,0 @@
//something that implements body + hitbox + transform can predict collision
impl crate::sweep::PredictCollision for Model {
fn predict_collision(&self,other:&Model) -> Option<crate::event::EventStruct> {
//math!
None
}
}