fluencelabs/assemblyscript
1
0
Fork 0
mirror of https://github.com/fluencelabs/assemblyscript synced 2025-06-23 03:31:44 +00:00
Code Issues Projects Releases Wiki Activity

Implement 'this' context parsing and serialization; Other minor improvements

Browse Source
This commit is contained in:
dcodeIO
2018-05-30 16:22:56 +02:00
parent c9ed03028d
commit 9d25f78fc1
18 changed files with 1589 additions and 1464 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
examples/n-body/assembly/index.ts
View File

@ -3,22 +3,24 @@ import "allocator/arena";
// From The Computer Language Benchmarks Game
// http://benchmarksgame.alioth.debian.org
const SOLAR_MASS = 4.0 * Math.PI * Math.PI;
const DAYS_PER_YEAR = 365.24;
type float = f64; // interchangeable f32/f64 for testing
const SOLAR_MASS = <float>(4.0 * Math.PI * Math.PI);
const DAYS_PER_YEAR: float = 365.24;
class Body {
constructor(
public x: f64,
public y: f64,
public z: f64,
public vx: f64,
public vy: f64,
public vz: f64,
public mass: f64
public x: float,
public y: float,
public z: float,
public vx: float,
public vy: float,
public vz: float,
public mass: float
) {}
offsetMomentum(px: f64, py: f64, pz: f64): this {
offsetMomentum(px: float, py: float, pz: float): this {
this.vx = -px / SOLAR_MASS;
this.vy = -py / SOLAR_MASS;
this.vz = -pz / SOLAR_MASS;
@ -85,9 +87,9 @@ class NBodySystem {
constructor(
public bodies: Body[]
) {
var px = 0.0;
var py = 0.0;
var pz = 0.0;
var px: float = 0.0;
var py: float = 0.0;
var pz: float = 0.0;
var size = bodies.length;
for (let i = 0; i < size; i++) {
let b = unchecked(bodies[i]);
@ -99,7 +101,7 @@ class NBodySystem {
bodies[0].offsetMomentum(px, py, pz);
}
advance(dt: f64): void {
advance(dt: float): void {
var bodies = this.bodies;
var size: u32 = bodies.length;
// var buffer = changetype<usize>(bodies.buffer_);
@ -126,7 +128,7 @@ class NBodySystem {
let dz = iz - bodyj.z;
let distanceSq = dx * dx + dy * dy + dz * dz;
let distance = Math.sqrt(distanceSq);
let distance = <float>Math.sqrt(distanceSq);
let mag = dt / (distanceSq * distance);
let bim = bodyim * mag;
@ -151,8 +153,8 @@ class NBodySystem {
}
}
energy(): f64 {
var e = 0.0;
energy(): float {
var e: float = 0.0;
var bodies = this.bodies;
for (let i: u32 = 0, size: u32 = bodies.length; i < size; ++i) {
@ -171,11 +173,11 @@ class NBodySystem {
e += 0.5 * bim * (vx * vx + vy * vy + vz * vz);
for (let j: u32 = i + 1; j < size; ++j) {
let bodyj = bodies[j];
let bodyj = unchecked(bodies[j]);
let dx = ix - bodyj.x;
let dy = iy - bodyj.y;
let dz = iz - bodyj.z;
let distance = Math.sqrt(dx * dx + dy * dy + dz * dz);
let distance = <float>Math.sqrt(dx * dx + dy * dy + dz * dz);
e -= bim * bodyj.mass / distance;
}
}
@ -200,7 +202,7 @@ export function getBody(index: i32): Body | null {
return <u32>index < <u32>bodies.length ? bodies[index] : null;
}
export function step(): f64 {
export function step(): float {
system.advance(0.01);
return system.energy();
}