Add files
This commit is contained in:
commit
069d80e867
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const express = require('express');
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const app = express();
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app.use(express.static('public'));
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module.exports = app;
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const io = require('./io');
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var gameState = require('./gamestate');
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const STATE_BUFFER_SIZE = 300; // 10 seconds at 30 FPS
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const EMIT_FPS=10;
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const EMIT_MS=Math.round(1000/EMIT_FPS);
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let stateBuffer = new Array(STATE_BUFFER_SIZE);
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let stateBufferIndex = 0;
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let lastSerializedState = null;
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let lastSerializedTimestamp = 0;
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module.exports = emitState;
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function emitState() {
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gameState.timestamp = Date.now();
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// Serialize the state only if it has changed since last time
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if (gameState.timestamp !== lastSerializedTimestamp) {
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lastSerializedState = JSON.stringify(gameState);
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lastSerializedTimestamp = gameState.timestamp;
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}
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//console.log(gameState.clients);
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//console.log(gameState.models.human1);
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// Store the current state in the ring buffer
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stateBuffer[stateBufferIndex] = lastSerializedState;
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stateBufferIndex = (stateBufferIndex + 1) % STATE_BUFFER_SIZE;
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// Emit state to clients
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Object.entries(gameState.clients).forEach(([socketId, client]) => {
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const socket = io.sockets.sockets.get(socketId);
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if (socket) {
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if (client.viewDelay > 0) {
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const delayedStateIndex = (stateBufferIndex - Math.round(client.viewDelay / EMIT_MS) + STATE_BUFFER_SIZE) % STATE_BUFFER_SIZE;
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const delayedState = stateBuffer[delayedStateIndex];
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if (delayedState) socket.emit('stateUpdate', JSON.parse(delayedState));
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} else {
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socket.emit('stateUpdate', JSON.parse(lastSerializedState));
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}
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}
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});
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}
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setInterval(emitState,EMIT_MS);
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let gameState = {
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timestamp: Date.now(),
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models: {
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human1:{ id: 'human1', type: 'human', x: 0, y: 0, z: 1.8, pitch: 0, yaw: 0, roll: 0,dx:0,dy:0,dz:0},
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human2:{ id: 'human2', type: 'human', x: 100, y: 100, z: 1.8, pitch: 0, yaw: 0, roll: 0 ,dx:0,dy:0,dz:0},
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drone1:{ id: 'drone1', type: 'drone', x: 50, y: 50, z: 20, pitch: 0, yaw: 0, roll: 0, propSpeed: 3 ,dx:0,dy:0,dz:0,dpitch:0,dyaw:0,droll:0},
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antenna1:{ id: 'antenna1', type: 'antenna', x: 75, y: 75, z: 5, pitch: 0, yaw: 0, roll: 0}
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},
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clients: {}
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};
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module.exports = gameState;
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var http = require('http').createServer(require('./app.js'));
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const PORT = 3000;
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http.listen(PORT, () => {
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console.log(`Server running on port ${PORT}`);
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});
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module.exports = http;
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var gameState = require('./gamestate');
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var io = require('socket.io')(require('./http'));
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module.exports = io;
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var gameState = require('./gamestate');
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const PHYSICS_FPS = 30;
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var GRAVITY = 9.81; // m/s^2
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GRAVITY/=3;
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const GRAVITY_MS = GRAVITY / 1000; // m/ms^2
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const HOVER_PROP_SPEED = 3;
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const MIN_PROP_SPEED = -3;
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const MAX_PROP_SPEED = 10;
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const DRONE_THRUST_PER_PROP_SPEED = GRAVITY_MS / HOVER_PROP_SPEED;
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const PROP_CTRL_MS = 9000; // Time to go from min to max by holding down the control
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const PROP_CHANGE_PER_MS = (MAX_PROP_SPEED - MIN_PROP_SPEED) / PROP_CTRL_MS;
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const PHYSICS_MS = Math.round(1000 / PHYSICS_FPS);
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const JUMP_VELOCITY = 1; // m/s
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const DRONE_SENSITIVITY = 0.01; // rad/s/s
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const DRONE_SENSITIVITY_MS = DRONE_SENSITIVITY/1000; // rad/s/ms
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const DRONE_STABILITY_FACTOR = 2/3;
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var BABYLON = null;
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import('@babylonjs/core').then(i=>BABYLON=i);
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// Update game state at approximately 30 FPS
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setInterval(updateGameState, PHYSICS_MS);
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function updateGameState() {
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var deltaT = PHYSICS_MS;
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gameState.timestamp = Date.now();
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// Apply control physics
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Object.values(gameState.clients).forEach(client => applyControlPhysics(client, deltaT));
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// Apply physics to all models
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Object.values(gameState.models).forEach(model => {
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if (model.type === 'human') applyHumanPhysics(model, deltaT);
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if (model.type === 'drone') applyDronePhysics(model, deltaT);
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});
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}
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function applyControlPhysics(client, deltaT) {
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const model = gameState.models[client.controllingId];
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//console.log('control model',model);
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if (!model) return;
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if (model.type === 'human') applyHumanControlPhysics(client, model, deltaT);
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if (model.type === 'drone') applyDroneControlPhysics(client, model, deltaT);
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}
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function applyHumanPhysics(model, deltaT) {
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// Apply gravity
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model.dz -= GRAVITY_MS * deltaT;
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// Apply movement
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model.x += model.dx * deltaT;
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model.y += model.dy * deltaT;
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model.z += model.dz * deltaT;
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// Apply walk slowing
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var backthrust = 0.1*GRAVITY_MS;
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var velocity = Math.sqrt(model.dx*model.dx+model.dy*model.dy+model.dz*model.dz);
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var nx = model.dx/velocity;
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var ny = model.dy/velocity;
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var nz = model.dz/velocity;
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var backx = -nx*deltaT*backthrust;
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var backy = -ny*deltaT*backthrust;
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var backz = -nz*deltaT*backthrust;
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if(backx>model.dx) {
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model.dx=0;
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model.dy=0;
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model.dz=0;
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}
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else {
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model.dx=backx;
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model.dy=backy;
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model.dz=backz;
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}
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// Prevent going below ground
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if (model.z < 1.8) {
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model.z = 1.8;
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model.dz = 0;
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}
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}
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function applyDronePhysics(model, deltaT) {
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// Apply gravity
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//console.log('pre physics',model);
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// Apply thrust
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if(BABYLON) {
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model.dz -= GRAVITY_MS * deltaT;
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const thrust = model.propSpeed * DRONE_THRUST_PER_PROP_SPEED;
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const thrustVector = new BABYLON.Vector3(0, thrust, 0);
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const rotationMatrix = BABYLON.Matrix.RotationYawPitchRoll(model.yaw, model.pitch, model.roll);
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const rotatedThrustVector = BABYLON.Vector3.TransformNormal(thrustVector, rotationMatrix);
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//console.log('prop vector',rotatedThrustVector);
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model.dx += rotatedThrustVector.x * deltaT;
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model.dy += rotatedThrustVector.z * deltaT;
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model.dz += rotatedThrustVector.y * deltaT;
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//console.log({gravity:GRAVITY_MS*deltaT,thrust:rotatedThrustVector.y*deltaT});
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}
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// Apply movement
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model.x += model.dx * deltaT;
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model.y += model.dy * deltaT;
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model.z += model.dz * deltaT;
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model.pitch += model.dpitch * deltaT;
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model.yaw += model.dyaw * deltaT;
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model.roll += model.droll * deltaT;
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//console.log({dronedz:model.dz});
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// Apply drag (air resistance)
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//const dragFactor = 0.1 * deltaT;
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//model.dx *= (1 - dragFactor);
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//model.dy *= (1 - dragFactor);
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//model.dz *= (1 - dragFactor);
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//model.dpitch *= (1 - dragFactor);
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//model.dyaw *= (1 - dragFactor);
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//model.droll *= (1 - dragFactor);
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//Apply linear drag
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var velocity = Math.sqrt(model.dx*model.dx+model.dy*model.dy+model.dz*model.dz);
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if(velocity) {
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var drag_coef=500;
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var dragForce = drag_coef*velocity*velocity;
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var dragForce_ms = dragForce/1000;
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var nx = model.dx/velocity;
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var ny = model.dy/velocity;
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var nz = model.dz/velocity;
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model.dx-=nx*dragForce_ms*deltaT;
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model.dy-=ny*dragForce_ms*deltaT;
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model.dz-=nz*dragForce_ms*deltaT;
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//console.log({velocity,drag_coef,dragForce,nx,ny,nz,deltaT});
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}
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//Apply rotational drag
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const rotationSpeed = DRONE_STABILITY_FACTOR * DRONE_SENSITIVITY_MS * deltaT;
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if(model.droll>0) {
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model.droll-=rotationSpeed;
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if(model.droll<0) model.droll=0;
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}
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else if(model.droll<0) {
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model.droll+=rotationSpeed;
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if(model.droll>0) model.droll=0;
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}
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if(model.dpitch>0) {
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model.dpitch-=rotationSpeed;
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if(model.dpitch<0) model.dpitch=0;
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}
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else if(model.dpitch<0) {
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model.dpitch+=rotationSpeed;
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if(model.dpitch>0) model.dpitch=0;
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}
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if(model.dyaw>0) {
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model.dyaw-=rotationSpeed;
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if(model.dyaw<0) model.dyaw=0;
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}
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else if(model.dyaw<0) {
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model.dyaw+=rotationSpeed;
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if(model.dyaw>0) model.dyaw=0;
|
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}
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// Apply prop speed centering
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if(model.propSpeed>HOVER_PROP_SPEED) {
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model.propSpeed-=PROP_CHANGE_PER_MS*DRONE_STABILITY_FACTOR*deltaT;
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if(model.propSpeed<HOVER_PROP_SPEED) model.propSpeed=HOVER_PROP_SPEED;
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}
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else if(model.propSpeed<HOVER_PROP_SPEED) {
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model.propSpeed+=PROP_CHANGE_PER_MS*DRONE_STABILITY_FACTOR*deltaT;
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if(model.propSpeed>HOVER_PROP_SPEED) model.propSpeed=HOVER_PROP_SPEED;
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}
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||||||
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// Prevent going below ground
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if (model.z < 0) {
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//console.log('Hit ground',{z:model.z,dz:model.dz});
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model.z = 0;
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model.dz = 0;
|
||||||
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}
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||||||
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//console.log('post physics',model);
|
||||||
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}
|
||||||
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function applyHumanControlPhysics(client, model, deltaT) {
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//console.log('applyHumanControlPhysics');
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||||||
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var walkthrust_ms = 0.3*GRAVITY_MS
|
||||||
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var radpersec = Math.PI;
|
||||||
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var radperms = radpersec/1000;
|
||||||
|
|
||||||
|
|
||||||
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if (client.controlState['w']) {
|
||||||
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model.dx += Math.sin(model.yaw)*walkthrust_ms*deltaT;
|
||||||
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model.dy += Math.cos(model.yaw)*walkthrust_ms*deltaT;
|
||||||
|
}
|
||||||
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if (client.controlState['s']) {
|
||||||
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model.dx -= Math.sin(model.yaw)*walkthrust_ms*deltaT;
|
||||||
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model.dy -= Math.cos(model.yaw)*walkthrust_ms*deltaT;
|
||||||
|
}
|
||||||
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if (client.controlState['a']) {
|
||||||
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model.dx -= Math.cos(model.yaw)*walkthrust_ms*deltaT;
|
||||||
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model.dy += Math.sin(model.yaw)*walkthrust_ms*deltaT;
|
||||||
|
}
|
||||||
|
if (client.controlState['d']) {
|
||||||
|
model.dx += Math.cos(model.yaw)*walkthrust_ms*deltaT;
|
||||||
|
model.dy -= Math.sin(model.yaw)*walkthrust_ms*deltaT;
|
||||||
|
}
|
||||||
|
if (client.controlState['ArrowLeft']) model.yaw -= radperms*deltaT;
|
||||||
|
if (client.controlState['ArrowRight']) model.yaw += radperms*deltaT;
|
||||||
|
if (client.controlState['ArrowUp']) model.pitch -= radperms*deltaT;
|
||||||
|
if (client.controlState['ArrowDown']) model.pitch += radperms*deltaT;
|
||||||
|
if (client.controlState['j'] && Math.abs(model.z-1.8)<0.1) {
|
||||||
|
model.dz = JUMP_VELOCITY;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function applyDroneControlPhysics(client, model, deltaT) {
|
||||||
|
const rotationSpeed = DRONE_SENSITIVITY_MS * deltaT; // 1 rad/s
|
||||||
|
|
||||||
|
if (client.controlState['d']) model.droll -= rotationSpeed;
|
||||||
|
if (client.controlState['a']) model.droll += rotationSpeed;
|
||||||
|
if (client.controlState['s']) model.dpitch -= rotationSpeed;
|
||||||
|
if (client.controlState['w']) model.dpitch += rotationSpeed;
|
||||||
|
if (client.controlState['q']) model.dyaw -= rotationSpeed;
|
||||||
|
if (client.controlState['e']) model.dyaw += rotationSpeed;
|
||||||
|
if (client.controlState['ArrowLeft']) model.dyaw -= rotationSpeed;
|
||||||
|
if (client.controlState['ArrowRight']) model.dyaw += rotationSpeed;
|
||||||
|
if (client.controlState['f']) {
|
||||||
|
model.roll = model.pitch = 0;
|
||||||
|
model.droll = model.dpitch = model.dyaw = 0;
|
||||||
|
}
|
||||||
|
if (client.controlState['g']) {
|
||||||
|
model.dx = model.dy = model.dz = 0;
|
||||||
|
model.roll = model.pitch = 0;
|
||||||
|
model.droll = model.dpitch = model.dyaw = 0;
|
||||||
|
}
|
||||||
|
if (client.controlState['ArrowUp']) {
|
||||||
|
model.propSpeed += PROP_CHANGE_PER_MS * deltaT;
|
||||||
|
if (model.propSpeed > MAX_PROP_SPEED) model.propSpeed = MAX_PROP_SPEED;
|
||||||
|
}
|
||||||
|
if (client.controlState['ArrowDown']) {
|
||||||
|
model.propSpeed -= PROP_CHANGE_PER_MS * deltaT;
|
||||||
|
if (model.propSpeed < MIN_PROP_SPEED) model.propSpeed = MIN_PROP_SPEED;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = {updateGameState };
|
||||||
|
|
@ -0,0 +1,19 @@
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<html>
|
||||||
|
<head>
|
||||||
|
<title>Drone Warfare Prototype</title>
|
||||||
|
<script src="https://cdnjs.cloudflare.com/ajax/libs/babylonjs/7.19.1/babylon.min.js"></script>
|
||||||
|
<script src="/socket.io/socket.io.js"></script>
|
||||||
|
<style>
|
||||||
|
#renderCanvas {
|
||||||
|
width: 100%;
|
||||||
|
height: 100%;
|
||||||
|
touch-action: none;
|
||||||
|
}
|
||||||
|
</style>
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
<canvas id="renderCanvas"></canvas>
|
||||||
|
<script src="/render.js"></script>
|
||||||
|
</body>
|
||||||
|
</html>
|
||||||
|
|
@ -0,0 +1,98 @@
|
||||||
|
const socket = io();
|
||||||
|
|
||||||
|
let gameState = null;
|
||||||
|
let clientId = null;
|
||||||
|
const modelMeshes = {};
|
||||||
|
|
||||||
|
const canvas = document.getElementById("renderCanvas");
|
||||||
|
const engine = new BABYLON.Engine(canvas, true);
|
||||||
|
var {scene,camera} = createScene();
|
||||||
|
|
||||||
|
function createScene() {
|
||||||
|
var scene = new BABYLON.Scene(engine);
|
||||||
|
var camera = new BABYLON.FreeCamera("camera", new BABYLON.Vector3(0, 5, -10), scene);
|
||||||
|
camera.setTarget(BABYLON.Vector3.Zero());
|
||||||
|
camera.attachControl(canvas, true);
|
||||||
|
|
||||||
|
const light = new BABYLON.HemisphericLight("light", new BABYLON.Vector3(0, 1, 0), scene);
|
||||||
|
|
||||||
|
// Create ground
|
||||||
|
const ground = BABYLON.MeshBuilder.CreateGround("ground", {width: 200, height: 200}, scene);
|
||||||
|
const groundMaterial = new BABYLON.StandardMaterial("groundMaterial", scene);
|
||||||
|
groundMaterial.diffuseColor = new BABYLON.Color3(0.5, 0.5, 0.5);
|
||||||
|
ground.material = groundMaterial;
|
||||||
|
|
||||||
|
return {scene,camera};
|
||||||
|
}
|
||||||
|
|
||||||
|
function createOrUpdateMesh(model) {
|
||||||
|
if (!modelMeshes[model.id]) {
|
||||||
|
let mesh;
|
||||||
|
if (model.type === 'human') {
|
||||||
|
mesh = BABYLON.MeshBuilder.CreateBox(model.id, {height: 1.8, width: 0.5, depth: 0.5}, scene);
|
||||||
|
mesh.material = new BABYLON.StandardMaterial(model.id + "Material", scene);
|
||||||
|
mesh.material.diffuseColor = new BABYLON.Color3(0, 0, 1);
|
||||||
|
} else if (model.type === 'drone') {
|
||||||
|
mesh = BABYLON.MeshBuilder.CreateBox(model.id, {size: 1}, scene);
|
||||||
|
mesh.material = new BABYLON.StandardMaterial(model.id + "Material", scene);
|
||||||
|
mesh.material.diffuseColor = new BABYLON.Color3(1, 0, 0);
|
||||||
|
} else if (model.type === 'antenna') {
|
||||||
|
mesh = BABYLON.MeshBuilder.CreateCylinder(model.id, {height: 5, diameter: 0.5}, scene);
|
||||||
|
mesh.material = new BABYLON.StandardMaterial(model.id + "Material", scene);
|
||||||
|
mesh.material.diffuseColor = new BABYLON.Color3(0, 1, 0);
|
||||||
|
}
|
||||||
|
modelMeshes[model.id] = mesh;
|
||||||
|
}
|
||||||
|
|
||||||
|
const mesh = modelMeshes[model.id];
|
||||||
|
mesh.position.set(model.x, model.z, model.y);
|
||||||
|
mesh.rotation.set(model.pitch, model.yaw, model.roll);
|
||||||
|
}
|
||||||
|
|
||||||
|
socket.on('connect', () => {
|
||||||
|
clientId = socket.id;
|
||||||
|
});
|
||||||
|
|
||||||
|
socket.on('initialState', (state) => {
|
||||||
|
gameState = state;
|
||||||
|
Object.values(state.models).forEach(createOrUpdateMesh);
|
||||||
|
});
|
||||||
|
|
||||||
|
socket.on('stateUpdate', (state) => {
|
||||||
|
gameState = state;
|
||||||
|
console.log(gameState);
|
||||||
|
console.log(gameState.models.human1);
|
||||||
|
Object.values(state.models).forEach(createOrUpdateMesh);
|
||||||
|
|
||||||
|
const client = gameState.clients[clientId];
|
||||||
|
if (client) {
|
||||||
|
const viewerModel = gameState.models[client.viewingId]
|
||||||
|
if (viewerModel) {
|
||||||
|
camera.position.set(viewerModel.x, viewerModel.z + 1.8, viewerModel.y);
|
||||||
|
camera.rotation.set(viewerModel.pitch, viewerModel.yaw, viewerModel.roll);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
|
||||||
|
engine.runRenderLoop(() => {
|
||||||
|
scene.render();
|
||||||
|
});
|
||||||
|
|
||||||
|
window.addEventListener("resize", () => {
|
||||||
|
engine.resize();
|
||||||
|
});
|
||||||
|
|
||||||
|
document.addEventListener('keydown', (event) => {
|
||||||
|
socket.emit('keyEvent', { key: event.key, isDown: true });
|
||||||
|
});
|
||||||
|
|
||||||
|
document.addEventListener('keyup', (event) => {
|
||||||
|
socket.emit('keyEvent', { key: event.key, isDown: false });
|
||||||
|
});
|
||||||
|
|
||||||
|
document.addEventListener('keypress', (event) => {
|
||||||
|
if (event.key === 'v') {
|
||||||
|
socket.emit('toggleView');
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
@ -0,0 +1,46 @@
|
||||||
|
var app = require('./app');
|
||||||
|
const http = require('./http');
|
||||||
|
const io = require('./io');
|
||||||
|
const emitState = require('./emitstate.js');
|
||||||
|
const physics = require('./physics');
|
||||||
|
|
||||||
|
var gameState = require('./gamestate');
|
||||||
|
|
||||||
|
io.on('connection', (socket) => {
|
||||||
|
console.log('A user connected');
|
||||||
|
|
||||||
|
gameState.clients[socket.id] = {
|
||||||
|
controlState: {},
|
||||||
|
controllingId: 'human1',
|
||||||
|
viewingId: 'human1',
|
||||||
|
controlDelay: 0,
|
||||||
|
viewDelay: 0
|
||||||
|
};
|
||||||
|
|
||||||
|
socket.emit('initialState', gameState);
|
||||||
|
|
||||||
|
socket.on('keyEvent', ({ key, isDown }) => {
|
||||||
|
const client = gameState.clients[socket.id];
|
||||||
|
if (client.controlDelay > 0) {
|
||||||
|
setTimeout(() => {
|
||||||
|
client.controlState[key] = isDown;
|
||||||
|
}, client.controlDelay);
|
||||||
|
} else {
|
||||||
|
client.controlState[key] = isDown;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
socket.on('toggleView', () => {
|
||||||
|
const client = gameState.clients[socket.id];
|
||||||
|
client.viewingId = client.viewingId === 'human1' ? 'drone1' : 'human1';
|
||||||
|
client.controllingId = client.viewingId;
|
||||||
|
client.controlDelay = client.controllingId === 'human1' ? 0 : 250;
|
||||||
|
client.viewDelay = client.viewingId === 'human1' ? 0 : 250;
|
||||||
|
});
|
||||||
|
|
||||||
|
socket.on('disconnect', () => {
|
||||||
|
delete gameState.clients[socket.id];
|
||||||
|
});
|
||||||
|
});
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue