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Fix it!

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Zach Fox 2017-01-30 11:52:08 -08:00
parent 89cc6ac315
commit 725cfa8045
1 changed files with 38 additions and 14 deletions
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52
script-archive/entity-server-filter-example.js
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@ -4,51 +4,75 @@ function filter(p) {
/* Simple example: if someone specifies name, add an 'x' to it. Note that print is ok to use. */
if (p.name) {p.name += 'x'; print('fixme name', p. name);}
/* This example clamps y. A better filter would probably zero y component of velocity and acceleration. */
if (p.position) {p.position.y = Math.min(1, p.position.y); print('fixme p.y', p.position.y);}
/* Can also reject altogether */
if (p.userData) { return false; }
/* Reject if modifications made to Model properties */
if (p.modelURL || p.compoundShapeURL || p.shape || p.shapeType || p.url || p.fps || p.currentFrame || p.running || p.loop || p.firstFrame || p.lastFrame || p.hold || p.textures || p.xTextureURL || p.yTextureURL || p.zTextureURL) { return false; }
/* Clamp velocity to maxVelocity units/second. Zeroing each component of acceleration keeps us from slamming.*/
var maxVelocity = 5;
function sign(val) {
if (val > 0) {
return 1;
} else if (val < 0) {
return -1;
} else {
return 0;
}
}
/* Random near-zero value used as "zero" to prevent two sequential updates from being
exactly the same (which would cause them to be ignored) */
var nearZero = 0.0001 * Math.random() + 0.001;
if (p.velocity) {
if (Math.abs(p.velocity.x) > maxVelocity) {
p.velocity.x = Math.sign(p.velocity.x) * maxVelocity;
p.acceleration.x = 0;
p.velocity.x = sign(p.velocity.x) * (maxVelocity + nearZero);
p.acceleration.x = nearZero;
}
if (Math.abs(p.velocity.y) > maxVelocity) {
p.velocity.y = Math.sign(p.velocity.y) * maxVelocity;
p.acceleration.y = 0;
p.velocity.y = sign(p.velocity.y) * (maxVelocity + nearZero);
p.acceleration.y = nearZero;
}
if (Math.abs(p.velocity.z) > maxVelocity) {
p.velocity.z = Math.sign(p.velocity.z) * maxVelocity;
p.acceleration.z = 0;
p.velocity.z = sign(p.velocity.z) * (maxVelocity + nearZero);
p.acceleration.z = nearZero;
}
}
/* Define an axis-aligned zone in which entities are not allowed to enter. */
/* This example zone corresponds to an area to the right of the spawnpoint
in your Sandbox. It's an area near the big rock to the right. If an entity
enters the zone, it'll move behind the rock.*/
var boxMin = {x: 25.5, y: -0.48, z: -9.9};
var boxMax = {x: 31.1, y: 4, z: -3.79};
var zero = {x: 0.0, y: 0.0, z: 0.0};
if (p.position) {
/* Random near-zero value used as "zero" to prevent two sequential updates from being
exactly the same (which would cause them to be ignored) */
var nearZero = 0.0001 * Math.random() + 0.001;
/* Define the points that create the "NO ENTITIES ALLOWED" box */
var boxMin = {x: 25.5, y: -0.48, z: -9.9};
var boxMax = {x: 31.1, y: 4, z: -3.79};
/* Define the point that you want entites that enter the box to appear */
var resetPoint = {x: 29.5, y: 0.37 + nearZero, z: -2};
var x = p.position.x;
var y = p.position.y;
var z = p.position.z;
if ((x > boxMin.x && x < boxMax.x) &&
(y > boxMin.y && y < boxMax.y) &&
(z > boxMin.z && z < boxMax.z)) {
/* Move it to the origin of the zone */
p.position = boxMin;
p.velocity = zero;
p.acceleration = zero;
p.position = resetPoint;
if (p.velocity) {
p.velocity = {x: 0, y: nearZero, z: 0};
}
if (p.acceleration) {
p.acceleration = {x: 0, y: nearZero, z: 0};
}
}
}