59 lines
1.6 KiB
JavaScript
59 lines
1.6 KiB
JavaScript
/* On collisions, entities are sent a 'hit' object, which looks like this:
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var HIT = {
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normal: "The normal of the collision point.",
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obj: "The gameobject of the object that collided.",
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sensor: "Boolean for if the colliding object was a sensor.",
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velocity: "Velocity of the contact.",
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pos: "Position in world space of the contact.",
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depth: "Depth of the contact.",
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};
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*/
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export function pos_query(pos, start = world, give = 10) {
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var ret;
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ret = physics.point_query_nearest(pos, 0);
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if (ret) return ret.entity;
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return game.all_objects(function (o) {
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var dist = Vector.length(o.pos.sub(pos));
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if (dist <= give) return o;
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});
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};
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export function box_point_query(box, points) {
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if (!box || !points) return [];
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var bbox = bbox.fromcwh(box.pos, box.wh);
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var inside = [];
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for (var i in points) if (bbox.pointin(bbox, points[i])) inside.push[i];
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return inside;
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};
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Object.assign(physics, {
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dynamic: 0,
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kinematic: 1,
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static: 2,
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com(pos) {
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if (!Array.isArray(pos)) return [0, 0];
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return pos.reduce((a, i) => a.add(i)).map(g => g / pos.length);
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},
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});
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physics.doc = {};
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physics.doc.pos_query = "Returns any object colliding with the given point.";
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physics.doc.box_query = "Calls a given function on every shape object in the given bbox.";
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physics.doc.box_point_query = "Returns the subset of points from a given list that are inside a given box.";
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physics.gravity = physics.make_gravity();
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physics.gravity.mask = ~1;
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physics.gravity.strength = 500;
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physics.damp = physics.make_damp();
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physics.damp.mask = ~1;
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physics.delta = 1 / 240;
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return {
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physics,
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};
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