testing stuff is in transpiler now

This commit is contained in:
zongor 2024-05-27 19:04:28 -04:00
parent 11faf235d5
commit b04a243190
6 changed files with 0 additions and 2488 deletions

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emcc -lwebsocket.js -o index.html test.c

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#include <stdio.h>
#include <stdlib.h>
#include <emscripten/websocket.h>
#include <assert.h>
// Vector3, 3 components
typedef struct Vector3 {
float x; // Vector x component
float y; // Vector y component
float z; // Vector z component
} Vector3;
// Camera, defines position/orientation in 3d space
typedef struct Camera3D {
Vector3 position; // Camera position
Vector3 target; // Camera target it looks-at
Vector3 up; // Camera up vector (rotation over its axis)
float fovy; // Camera field-of-view aperture in Y (degrees) in perspective, used as near plane width in orthographic
int projection; // Camera projection: CAMERA_PERSPECTIVE or CAMERA_ORTHOGRAPHIC
} Camera3D;
EM_BOOL WebSocketOpen(int eventType, const EmscriptenWebSocketOpenEvent *e, void *userData) {
printf("open(eventType=%d, userData=%p)\n", eventType, userData);
Camera3D camera = {0};
camera.position = (Vector3){-9.0f, 9.0f, 4.0f};
camera.target = (Vector3){9.0f, 9.0f, 0.0f};
camera.up = (Vector3){0.0f, 1.0f, 0.0f};
camera.fovy = 60.0f;
camera.projection = 0;
emscripten_websocket_send_binary(e->socket, &camera, sizeof(camera));
return 0;
}
EM_BOOL WebSocketClose(int eventType, const EmscriptenWebSocketCloseEvent *e, void *userData) {
printf("close(eventType=%d, wasClean=%d, code=%d, reason=%s, userData=%p)\n", eventType, e->wasClean, e->code, e->reason, userData);
return 0;
}
EM_BOOL WebSocketError(int eventType, const EmscriptenWebSocketErrorEvent *e, void *userData) {
printf("error(eventType=%d, userData=%p)\n", eventType, userData);
return 0;
}
EM_BOOL WebSocketMessage(int eventType, const EmscriptenWebSocketMessageEvent *e, void *userData) {
printf("message(eventType=%d, userData=%p data=%p, numBytes=%d, isText=%d)\n", eventType, userData, e->data, e->numBytes, e->isText);
static int text_received = 0;
if (e->isText) {
printf("text data: \"%s\"\n", e->data);
assert(strcmp((const char*)e->data, "hello on the other side") == 0);
text_received = 1;
return 0;
}
Camera3D camera;
memcpy(&camera, e->data, sizeof camera);
printf("x: %f", camera.position.x);
printf(" y: %f", camera.position.y);
printf(" z: %f", camera.position.z);
printf(" fovy: %f", camera.fovy);
printf("\n");
emscripten_websocket_close(e->socket, 0, 0);
emscripten_websocket_delete(e->socket);
emscripten_force_exit(0);
return 0;
}
int main() {
assert(emscripten_websocket_is_supported());
EmscriptenWebSocketCreateAttributes attr;
emscripten_websocket_init_create_attributes(&attr);
const char *url = "ws://localhost:8089/";
attr.url = url;
// We don't really use a special protocol on the server backend in this test,
// but check that it can be passed.
attr.protocols = "binary,base64";
EMSCRIPTEN_WEBSOCKET_T socket = emscripten_websocket_new(&attr);
assert(socket >= 0);
// URL:
int urlLength = 0;
EMSCRIPTEN_RESULT res = emscripten_websocket_get_url_length(socket, &urlLength);
assert(res == EMSCRIPTEN_RESULT_SUCCESS);
assert(urlLength == strlen(url)+1);
char *url2 = malloc(urlLength);
res = emscripten_websocket_get_url(socket, url2, urlLength);
assert(res == EMSCRIPTEN_RESULT_SUCCESS);
printf("url: %s, verified: %s, length: %d\n", url, url2, urlLength);
assert(!strcmp(url, url2));
// Protocol:
int protocolLength = 0;
res = emscripten_websocket_get_protocol_length(socket, &protocolLength);
assert(res == EMSCRIPTEN_RESULT_SUCCESS);
assert(protocolLength == 1); // Null byte
char *protocol = malloc(protocolLength);
res = emscripten_websocket_get_protocol(socket, protocol, protocolLength);
assert(res == EMSCRIPTEN_RESULT_SUCCESS);
// We don't really use a special protocol on the server backend in this test,
// but test that it comes out as an empty string at least.
assert(!strcmp(protocol, ""));
// Extensions:
int extensionsLength = 0;
res = emscripten_websocket_get_extensions_length(socket, &extensionsLength);
assert(res == EMSCRIPTEN_RESULT_SUCCESS);
assert(extensionsLength == 1); // Null byte
char *extensions = malloc(extensionsLength);
res = emscripten_websocket_get_extensions(socket, extensions, extensionsLength);
assert(res == EMSCRIPTEN_RESULT_SUCCESS);
// We don't really use any extensions on the server backend in this test, but
// test that it comes out as an empty string at least.
assert(!strcmp(extensions, ""));
emscripten_websocket_set_onopen_callback(socket, (void*)0x42, WebSocketOpen);
emscripten_websocket_set_onclose_callback(socket, (void*)0x43, WebSocketClose);
emscripten_websocket_set_onerror_callback(socket, (void*)0x44, WebSocketError);
emscripten_websocket_set_onmessage_callback(socket, (void*)0x45, WebSocketMessage);
emscripten_exit_with_live_runtime();
return 0;
}

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class Vector3 {
constructor(init = {}, ptr = undefined) {
this._size = 12;
this._ptr = ptr.buffer || new ArrayBuffer(this._size);
this._data = new DataView(this._ptr);
for (const key of Object.keys(init)) {
this[key] = init[key];
}
}
get x() {
return this._data.getFloat32(0, true);
}
get y() {
return this._data.getFloat32(4, true);
}
get z() {
return this._data.getFloat32(8, true);
}
set x(v) {
this._data.setFloat32(0, v, true);
}
set y(v) {
this._data.setFloat32(4, v, true);
}
set z(v) {
this._data.setFloat32(8, v, true);
}
get bytes() {
return new Uint8Array(this._ptr);
}
}
class Camera3D {
constructor(init = {}, ptr = undefined) {
this._size = 44;
this._ptr = ptr.buffer || new ArrayBuffer(this._size);
this._data = new DataView(this._ptr);
for (const key of Object.keys(init)) {
this[key] = init[key];
}
}
get position() {
return new Vector3({}, new Uint8Array(this._ptr.slice(0, 12)));
}
get target() {
return new Vector3({}, new Uint8Array(this._ptr.slice(12, 24)));
}
get up() {
return new Vector3({}, new Uint8Array(this._ptr.slice(24, 36)));
}
get fovy() {
return this._data.getFloat32(36, true);
}
get projection() {
return this._data.getInt32(40, true);
}
set position(v) {
this._data.set(v.bytes(), 0);
}
set target(v) {
this._data.set(v.bytes(), 12);
}
set up(v) {
this._data.set(v.bytes(), 24);
}
set fovy(v) {
return this._data.setFloat32(36, v, true);
}
set projection(v) {
return this._data.setInt32(40, v, true);
}
get bytes() {
return new Uint8Array(this._ptr);
}
}
var decoder = new TextDecoder("utf-8");
var port = 8089;
var ws = require("ws");
var wss = new ws.WebSocketServer({ port: port });
console.log("WebSocket server listening on ws://localhost:" + port + "/");
wss.on("connection", function (ws) {
console.log("Client connected!");
ws.on("message", function (message, isBinary) {
if (!isBinary) {
var text = decoder.decode(new Uint8Array(message).buffer);
console.log("received TEXT: " + text.length + " characters:");
console.log(' "' + text + '"');
} else {
const camera = new Camera3D({}, new Uint8Array(message));
console.log(camera.position.x, camera.position.y, camera.position.z);
console.log(camera.target.x, camera.target.y, camera.target.z);
console.log(camera.up.x, camera.up.y, camera.up.z);
console.log(camera.fovy);
console.log(camera.projection);
console.log(camera.bytes);
ws.send(camera.bytes, { binary: true }); // Echo back the received message
}
});
});