24Play-Mykyta-Slobodianiuk
78d85c3799
-Add UI (Health bars, Resources UI, HUD Interface, Weapon U, Zoombie Invasion progress Indicator) -Refactor code structure for improved readability and maintainability
73 lines
2.3 KiB
TypeScript
73 lines
2.3 KiB
TypeScript
import { Physics_internal } from "@24tools/playable_template";
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import { Box3, Object3D, Vector3 } from "three";
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import { Body, Box, Quaternion, Sphere, Vec3 } from "cannon-es";
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// Collision layers. Each body has a `group` (what it IS) and a `mask` (what it
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// COLLIDES WITH); two bodies interact only if each one's group is in the other's
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// mask. Values are bit flags so masks can be OR-combined (e.g. Wall | Trigger).
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export enum PhysicsLayer {
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Player = 1,
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Wall = 2,
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Trigger = 4,
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Enemy = 8,
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}
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/**
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* Wraps a three.js object in a cannon-es rigid body. The shape is derived from
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* the object: the player gets a Sphere (rolls smoothly along walls/floor),
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* everything else gets a Box sized to the object's bounding box.
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*/
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export class PhysicsBody {
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private body: Body;
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constructor(
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object: Object3D,
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isTrigger: boolean,
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mass: number,
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collisionGroup: PhysicsLayer,
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collisionMask: PhysicsLayer,
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sphereRadius = 0.3,
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) {
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const isPlayer = collisionGroup === PhysicsLayer.Player;
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// Measure the bounding box with rotation temporarily zeroed, so the box
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// half-extents match the object's un-rotated size; the body's own
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// quaternion (set below) then applies the real orientation.
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const savedRotation = object.quaternion.clone();
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object.quaternion.copy(new Quaternion());
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const size = new Box3().setFromObject(object).getSize(new Vector3());
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object.quaternion.copy(savedRotation);
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this.body = new Body({
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isTrigger,
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mass,
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shape: isPlayer
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? new Sphere(sphereRadius)
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: new Box(new Vec3(size.x / 2, size.y / 2, size.z / 2)),
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collisionFilterGroup: collisionGroup,
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collisionFilterMask: collisionMask,
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});
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const worldPos = object.getWorldPosition(new Vector3());
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this.body.position.set(worldPos.x, worldPos.y, worldPos.z);
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this.body.quaternion.setFromEuler(
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object.rotation.x,
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object.rotation.y,
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object.rotation.z,
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"XYZ",
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);
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Physics_internal.physicsWorld?.addBody(this.body);
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}
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/** The underlying cannon body (for direct velocity/position control). */
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getPhysicsBody(): Body {
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return this.body;
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}
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/** Remove the body from the physics world (e.g. when a crate breaks). */
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destroy() {
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Physics_internal.physicsWorld?.removeBody(this.body);
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}
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}
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