GeometryDash3D/js/Player.js

import { Cube } from "./Cube.js";
import { Rotation } from "./utils.js";
import { jumpDemo } from "./Game.js";

export class Player extends Cube {
    constructor(color) {
        super(color, "assets/images/player.jpg");

        this.data.position.x = -2;
        this.data.rotation.x = this.gameRotation;

        this.movementData = new Rotation(this.data.position);
    }

    /**
     * Play the player animation
     * @param {*} listEnnemies
     * @param {boolean} demo
     * @returns boolean if the player is alive or not
     */
    animation = (listEnnemies, demo) => {
        if (demo) {
            listEnnemies.forEach((ennemy) => {
                const pos = ennemy.position.x - this.data.position.x;
                if (pos < Math.random() * 2.8 + 0.2 && pos > 0) {
                    dispatchEvent(jumpDemo);
                }
            });
        }

        // If we jump
        if (this.movementData.state) {
            // Rotation
            this.data.rotation.y -= this.movementData.rotationVelocity;

            // If we're falling (2nd part of the jump)
            if (this.movementData.falling()) {
                // Gravity!
                this.data.position.y -= this.movementData.jumpVelocity;
            } else {
                // If we're jumping (1st part of the jump) : jumping
                this.data.position.y += this.movementData.jumpVelocity;

                // Check if the jump stop and we need to goes down
                if (this.data.position.y >= this.movementData.jump) {
                    this.movementData.changeJump(this.movementData.default.y);
                }
            }

            // End of the rotation
            if (this.data.rotation.y <= this.movementData.rotation) {
                // Force the final rotation
                this.data.rotation.y = this.movementData.rotation;

                // Force the end of the jump
                this.data.position.y = this.movementData.default.y;

                // End
                this.movementData.changeState();
            }
        }

        return !this.checkCollision(listEnnemies);
    };

    /**
     * Handle player's input
     * @param {string} key key pressed
     */
    controlUser = (key) => {
        if (key.code == "Space" && !this.movementData.state) {
            this.movementData.changeRotation(this.data.rotation.y - Math.PI);
            this.movementData.changeJump(this.data.position.y + Math.PI);
            this.movementData.changeState();
        }
    };

    /**
     * Check collisions with ennemies
     * @param {*} listEnnemies
     * @returns boolean
     */
    checkCollision = (listEnnemies) => {
        for (
            let vertexIndex = 0;
            vertexIndex < this.data.geometry.attributes.position.array.length;
            vertexIndex++
        ) {
            // Retrieve the vertex from the player geometry
            const localVertex = new THREE.Vector3()
                .fromBufferAttribute(
                    this.data.geometry.attributes.position,
                    vertexIndex
                )
                .clone();

            // Apply the player matrix for the vector
            const globalVertex = localVertex.applyMatrix4(this.data.matrix);

            // Substract the position to obtain the position
            const directionVector = globalVertex.sub(this.data.position);

            // Create the raycaster for this vector from the player position
            const ray = new THREE.Raycaster(
                this.data.position,
                directionVector.clone().normalize()
            );

            // Check if the raycaster hit ennemies
            const collisionResults = ray.intersectObjects(listEnnemies, false);
            if (
                collisionResults.length > 0 &&
                directionVector.length() < 1.5 &&
                collisionResults[0].distance < directionVector.length()
            ) {
                // Yes some ennemies are in the way
                return true;
            }
        }

        // No ennemies found
        return false;
    };
}