pyscript/examples/mario/js/floor.js

(function () {
    if (typeof Mario === "undefined") window.Mario = {};

    var Floor = (Mario.Floor = function (pos, sprite) {
        Mario.Entity.call(this, {
            pos: pos,
            sprite: sprite,
            hitbox: [0, 0, 16, 16],
        });
    });

    Mario.Util.inherits(Floor, Mario.Entity);

    Floor.prototype.isCollideWith = function (ent) {
        //the first two elements of the hitbox array are an offset, so let's do this now.
        var hpos1 = [
            Math.floor(this.pos[0] + this.hitbox[0]),
            Math.floor(this.pos[1] + this.hitbox[1]),
        ];
        var hpos2 = [
            Math.floor(ent.pos[0] + ent.hitbox[0]),
            Math.floor(ent.pos[1] + ent.hitbox[1]),
        ];

        //if the hitboxes actually overlap
        if (
            !(
                hpos1[0] > hpos2[0] + ent.hitbox[2] ||
                hpos1[0] + this.hitbox[2] < hpos2[0]
            )
        ) {
            if (
                !(
                    hpos1[1] > hpos2[1] + ent.hitbox[3] ||
                    hpos1[1] + this.hitbox[3] < hpos2[1]
                )
            ) {
                if (!this.standing) {
                    ent.bump();
                } else {
                    //if the entity is over the block, it's basically floor
                    var center = hpos2[0] + ent.hitbox[2] / 2;
                    if (
                        Math.abs(hpos2[1] + ent.hitbox[3] - hpos1[1]) <=
                        ent.vel[1]
                    ) {
                        if (
                            level.statics[this.pos[1] / 16 - 1][
                                this.pos[0] / 16
                            ]
                        ) {
                            return;
                        }
                        ent.vel[1] = 0;
                        ent.pos[1] = hpos1[1] - ent.hitbox[3] - ent.hitbox[1];
                        ent.standing = true;
                        if (ent instanceof Mario.Player) {
                            ent.jumping = 0;
                        }
                    } else if (
                        Math.abs(hpos2[1] - hpos1[1] - this.hitbox[3]) >
                            ent.vel[1] &&
                        center + 2 >= hpos1[0] &&
                        center - 2 <= hpos1[0] + this.hitbox[2]
                    ) {
                        //ent is under the block.
                        ent.vel[1] = 0;
                        ent.pos[1] = hpos1[1] + this.hitbox[3];
                        if (ent instanceof Mario.Player) {
                            this.bonk(ent.power);
                            ent.jumping = 0;
                        }
                    } else {
                        //entity is hitting it from the side, we're a wall
                        ent.collideWall(this);
                    }
                }
            }
        }
    };

    Floor.prototype.bonk = function () {};
})();