html-tower/static/player.js

console.log("loading player system");

const playerSystem = (engine) => {
    const entity = document.getElementById("player");
    const movementRate = 0.5;
    engine("registerEntity", entity);
    const playerTransform = engine ("getComponentConstructor", "transform")(entity);
    const playerCollision =
          engine ("getComponentConstructor", "collision")(entity, {
              layers: new Set(["player"]),
              mask: new Set(["environment"]),
              collisionShape: {

              }
          });
    // const interactionCollision =
    //       engine ("getComponentConstructor", "collision") (entity, {
    //           layers: ["player"],
    //           mask: ["interactable"],
    //           collisionShape: {

    //           }
    //       });

    const move = (direction) => (delta, eventData) => {
        let translation = [0,0];
        switch (direction) {
        case "left":
            translation [0] = -( movementRate * delta );
            break;
        case "right":
            translation[0] = movementRate * delta;
            break;
        case "up":
            translation[1] = - ( movementRate * delta );
            break;
        case "down":
            translation[1] = movementRate * delta;
            break;
        }
        playerTransform("translate", translation);
        playerCollision("checkCollision");
        // interactionCollision("checkCollision");
    };

    engine("registerEntity", entity);
    engine("addComponent", entity, "transform", playerTransform);
    engine("addComponent", entity, "collision", playerCollision);
    // engine("addComponent", entity, "collision", interactionCollision);
    // engine("")
    engine("subscribeToEvent", "moveLeft", "movePlayerLeft", move("left"));
    engine("subscribeToEvent", "moveRight", "movePlayerRight", move("right"));
    engine("subscribeToEvent", "moveUp", "movePlayerUp", move("up"));
    engine("subscribeToEvent", "moveDown", "movePlayerDown", move("down"));
};