3D-Action-RPG-JavaScript/src/utils/camera.js at main · hdevx/3D-Action-RPG-JavaScript · GitHub

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export function setupCamera(scene, target, engine) {

const camera = new BABYLON.ArcRotateCamera("arcCam", 3 * Math.PI / 2, 3 * Math.PI / 8, 200, target.position, scene);

camera.attachControl(document.getElementById('renderCanvas'), false);

scene.collisionsEnabled = true;

// camera.checkCollisions = true;

camera.collisionRadius = new BABYLON.Vector3(0.5, 0.5, 0.5);

camera.allowUpsideDown = false;

camera.panningSensibility = 0;

camera.radius = 70;

// More Professional Limited Camera, avoids collision

camera.wheelDeltaPercentage = 0.0200;

// camera.upperBetaLimit = 3.13;

camera.lowerRadiusLimit = 4; // Minimum distance to target (closest zoom)

camera.upperRadiusLimit = 656.8044;

camera.upperBetaLimit = Math.PI / 2; // Stops at the horizon (90 degrees)

camera.lowerBetaLimit = (Math.PI / 2) * 0.01; // Slightly below the top-down view

camera.alpha = 4.954;

camera.beta = 1.3437;

// if camera

// setupCameraCollision(scene, camera, target);

// setupCameraCollisionZoomInOnly(scene, camera, target);

setupTurnCamera(scene, camera, engine);

if (isMobileDevice()) {

// keep the left click and drag to rotate the camera

} else {

freeLeftClick(scene, camera);

};

return camera;

}

function setupCameraCollision(scene, camera, player) {

camera.upperBetaLimit = Math.PI // Full rotate

let cameraSnap = 0.01;

let targetRadius = 80;

let targetPosition = camera.position.clone();

let transitionSpeed = 0.1;

let ray = new BABYLON.Ray(camera.position, player.position.subtract(camera.position), 800);

// let rayHelper = new BABYLON.RayHelper(ray);

// rayHelper.show(scene);

let frameCounter = 0;

const updateInterval = 10; // Update every 3 frames

scene.registerBeforeRender(() => {

const offset = 0.00; // Adjust this value as needed

ray.direction = player.position.subtract(camera.position).normalize();

ray.origin = camera.position.add(ray.direction.scale(offset));

// Perform ray cast

let pickInfo = scene.pickWithRay(ray, (mesh) => mesh !== player);

let hitObjectName = pickInfo.pickedMesh ? pickInfo.pickedMesh.name : "Unknown";

// console.log("Hit object name:", hitObjectName);

// console.log("pickInfo.pickedMesh.cameraCollide", pickInfo.pickedMesh?.cameraCollide);

let distanceBetweenCameraAndProjected = BABYLON.Vector3.Distance(camera.position, BABYLON.Vector3.Lerp(camera.position, targetPosition, 0.2));

if (pickInfo.pickedMesh?.cameraCollide ?? true) {

let distanceToObject = pickInfo.distance;

let distanceToPlayer = BABYLON.Vector3.Distance(camera.position, player.position);

// Adjust these values as needed

let minDistanceFromWall = 0; // Minimum distance to keep from the wall

let minDistanceFromPlayer = 0; // Minimum distance to keep from the player

let forwardBias = 0.0; // Small forward bias

// Calculate target distance

let targetDistance = Math.min(

distanceToObject - minDistanceFromWall,

distanceToPlayer - minDistanceFromPlayer

);

// Ensure we don't go backwards

// targetDistance = Math.max(targetDistance, 0);

// Calculate new target position

targetPosition = camera.position.add(ray.direction.scale(targetDistance));

// console.log(distanceToPlayer);

// console.log(distanceToPlayer);

// camera.position = targetPosition;

let distanceBetweenCameraAndProjected = BABYLON.Vector3.Distance(camera.position, BABYLON.Vector3.Lerp(camera.position, targetPosition, 0.2));

// if (distanceBetweenCameraAndProjected > 0.10) {

camera.position = BABYLON.Vector3.Lerp(camera.position, targetPosition, 0.91);

// camera.position = targetPosition;

// } else {

// console.log("not moving");

// }

} else {

// if the camera has room to move inward, don't apply moving out force

if (distanceBetweenCameraAndProjected > cameraSnap) {

// If no collision, set target to a position behind the player

let defaultDistance = 70;

let judgedDistance = targetRadius;

let distanceToPlayer = BABYLON.Vector3.Distance(camera.position, player.position);

// if there would still be a collision, set distance to player, otherwise set target radius

if (distanceToPlayer < targetRadius)

judgedDistance = distanceToPlayer;

// defaultDistance = camera.radius;

// targetPosition = player.position.subtract(ray.direction.scale(defaultDistance));

// console.log(pickInfo.pickedMesh?.cameraCollide);

targetPosition = player.position.subtract(ray.direction.scale(targetRadius));

// targetPosition = player.position.subtract(ray.direction.scale(judgedDistance));

camera.position = BABYLON.Vector3.Lerp(camera.position, targetPosition, 0.02);

// camera.position = targetPosition;

}

}

// Smoothly move camera

// camera.position = BABYLON.Vector3.Lerp(camera.position, targetPosition, transitionSpeed);

// camera.radius = BABYLON.Vector3.Lerp(camera.radius, targetRadius, transitionSpeed);

});

// scene.onPointerObservable.add((pointerInfo) => {

// if (pointerInfo.type === BABYLON.PointerEventTypes.POINTERWHEEL) {

// // Adjust zoom speed as needed

// let zoomSpeed = 1;

// targetRadius += pointerInfo.event.wheelDelta * zoomSpeed;

// // Set min and max zoom limits

// targetRadius = Math.max(5, Math.min(targetRadius, 100));

// }

// });

}

function setupCameraCollisionZoomInOnly(scene, camera, player) {

camera.upperBetaLimit = Math.PI // Full rotate

let cameraSnap = 0.01;

let targetRadius = 80;

let targetPosition = camera.position.clone();

let transitionSpeed = 0.1;

let ray = new BABYLON.Ray(camera.position, player.position.subtract(camera.position), 800);

// let rayHelper = new BABYLON.RayHelper(ray);

// rayHelper.show(scene);

let frameCounter = 0;

const updateInterval = 10; // Update every 3 frames

scene.registerBeforeRender(() => {

const offset = 0.00; // Adjust this value as needed

ray.direction = player.position.subtract(camera.position).normalize();

ray.origin = camera.position.add(ray.direction.scale(offset));

// Perform ray cast

let pickInfo = scene.pickWithRay(ray, (mesh) => mesh !== player);

// console.log("Hit object name:", hitObjectName);

// console.log("pickInfo.pickedMesh.cameraCollide", pickInfo.pickedMesh?.cameraCollide);

if (pickInfo.pickedMesh?.cameraCollide ?? true) {

let distanceToObject = pickInfo.distance;

let distanceToPlayer = BABYLON.Vector3.Distance(camera.position, player.position);

// Adjust these values as needed

let minDistanceFromWall = 0; // Minimum distance to keep from the wall

let minDistanceFromPlayer = 0; // Minimum distance to keep from the player

let forwardBias = 0.0; // Small forward bias

// Calculate target distance

let targetDistance = Math.min(

distanceToObject - minDistanceFromWall,

distanceToPlayer - minDistanceFromPlayer

);

// Ensure we don't go backwards

// targetDistance = Math.max(targetDistance, 0);

// Calculate new target position

targetPosition = camera.position.add(ray.direction.scale(targetDistance));

// console.log(distanceToPlayer);

// console.log(distanceToPlayer);

// camera.position = targetPosition;

let distanceBetweenCameraAndProjected = BABYLON.Vector3.Distance(camera.position, BABYLON.Vector3.Lerp(camera.position, targetPosition, 0.2));

// if (distanceBetweenCameraAndProjected > 0.10) {

camera.position = BABYLON.Vector3.Lerp(camera.position, targetPosition, 0.91);

// camera.position = targetPosition;

// } else {

// console.log("not moving");

// }

}

});

// scene.onPointerObservable.add((pointerInfo) => {

// if (pointerInfo.type === BABYLON.PointerEventTypes.POINTERWHEEL) {

// // Adjust zoom speed as needed

// let zoomSpeed = 1;

// targetRadius += pointerInfo.event.wheelDelta * zoomSpeed;

// // Set min and max zoom limits

// targetRadius = Math.max(5, Math.min(targetRadius, 100));

// }

// });

}

function setupTurnCamera(scene, camera, engine) {

var cameraRotationSpeed = 2.25; // Adjust this value for faster or slower rotation

var keyStates = {};

// Function to handle keydown event

function onKeyDown(event) {

keyStates[event.key] = true;

}

// Function to handle keyup event

function onKeyUp(event) {

keyStates[event.key] = false;

}

// Add event listeners to the window

window.addEventListener('keydown', onKeyDown);

window.addEventListener('keyup', onKeyUp);

scene.onBeforeRenderObservable.add(() => {

if (keyStates['a']) {

(camera.alpha);

camera.alpha += cameraRotationSpeed * engine.getDeltaTime() / 1000;

}

// Check if 'D' is pressed for rotating right

if (keyStates['d']) {

camera.alpha -= cameraRotationSpeed * engine.getDeltaTime() / 1000;

}

});

}

// Function to update camera beta limit based on terrain height

// function updateCameraBetaLimit() {

// var ray = new Babylon.Ray(camera.target, new Babylon.Vector3(0, -1, 0));

// var pickInfo = scene.pickWithRay(ray, function(mesh) { return mesh === ground; });

// if (pickInfo.hit) {

// var terrainHeight = pickInfo.pickedPoint.y;

// var heightAboveTerrain = camera.position.y - terrainHeight;

// var minBeta = Math.atan2(heightAboveTerrain, camera.radius);

// camera.lowerBetaLimit = minBeta;

// }

// }

// updateCameraBetaLimit();

function isMobileDevice() {

return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);

}

// used in builder to make camera not intercept left click only

function freeLeftClick(scene, camera) {

// Modify pointer inputs

camera.inputs.attached.pointers.buttons = [1, 2]; // 0 = left, 1 = middle, 2 = right

}