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equip from a distance uses a spring to pull the object to the hand before equipping it

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This commit is contained in:
Seth Alves 2015-11-17 17:18:16 -08:00
parent 5ae3c5aea0
commit 94f18672d4
1 changed files with 85 additions and 7 deletions
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92
examples/controllers/handControllerGrab.js
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@ -55,6 +55,13 @@ var RELEASE_VELOCITY_MULTIPLIER = 1.5; // affects throwing things
var PICK_BACKOFF_DISTANCE = 0.2; // helps when hand is intersecting the grabble object
var NEAR_GRABBING_KINEMATIC = true; // force objects to be kinematic when near-grabbed
//
// equip
//
var EQUIP_SPRING_SHUTOFF_DISTANCE = 0.05;
var EQUIP_SPRING_TIMEFRAME = 0.4; // how quickly objects move to their new position
//
// other constants
//
@ -70,7 +77,7 @@ var ZERO_VEC = {
var NULL_ACTION_ID = "{00000000-0000-0000-000000000000}";
var MSEC_PER_SEC = 1000.0;
// these control how long an abandoned pointer line will hang around
// these control how long an abandoned pointer line or action will hang around
var LIFETIME = 10;
var ACTION_TTL = 15; // seconds
var ACTION_TTL_REFRESH = 5;
@ -113,6 +120,7 @@ var STATE_EQUIP = 12
var STATE_CONTINUE_EQUIP_BD = 13; // equip while bumper is still held down
var STATE_CONTINUE_EQUIP = 14;
var STATE_WAITING_FOR_BUMPER_RELEASE = 15;
var STATE_EQUIP_SPRING = 16;
function stateToName(state) {
@ -149,6 +157,8 @@ function stateToName(state) {
return "continue_equip";
case STATE_WAITING_FOR_BUMPER_RELEASE:
return "waiting_for_bumper_release";
case STATE_EQUIP_SPRING:
return "state_equip_spring";
}
return "unknown";
@ -228,14 +238,15 @@ function MyController(hand) {
this.continueDistanceHolding();
break;
case STATE_NEAR_GRABBING:
this.nearGrabbing();
break;
case STATE_EQUIP:
this.nearGrabbing();
break;
case STATE_WAITING_FOR_BUMPER_RELEASE:
this.waitingForBumperRelease();
break;
case STATE_EQUIP_SPRING:
this.pullTowardEquipPosition()
break;
case STATE_CONTINUE_NEAR_GRABBING:
case STATE_CONTINUE_EQUIP_BD:
case STATE_CONTINUE_EQUIP:
@ -444,7 +455,15 @@ function MyController(hand) {
return;
} else if (!intersection.properties.locked) {
this.grabbedEntity = intersection.entityID;
this.setState(this.state == STATE_SEARCHING ? STATE_NEAR_GRABBING : STATE_EQUIP)
if (this.state == STATE_SEARCHING) {
this.setState(STATE_NEAR_GRABBING);
} else { // equipping
if (typeof grabbableData.spatialKey !== 'undefined') {
this.setState(STATE_EQUIP_SPRING);
} else {
this.setState(STATE_EQUIP);
}
}
return;
}
} else if (! entityIsGrabbedByOther(intersection.entityID)) {
@ -455,7 +474,7 @@ function MyController(hand) {
this.grabbedEntity = intersection.entityID;
if (typeof grabbableData.spatialKey !== 'undefined' && this.state == STATE_EQUIP_SEARCHING) {
// if a distance pick in equip mode hits something with a spatialKey, equip it
this.setState(STATE_EQUIP);
this.setState(STATE_EQUIP_SPRING);
return;
} else if (this.state == STATE_SEARCHING) {
this.setState(STATE_DISTANCE_HOLDING);
@ -750,7 +769,13 @@ function MyController(hand) {
this.actionID = null;
} else {
this.actionTimeout = now + (ACTION_TTL * MSEC_PER_SEC);
this.setState(this.state == STATE_NEAR_GRABBING ? STATE_CONTINUE_NEAR_GRABBING : STATE_CONTINUE_EQUIP_BD)
if (this.state == STATE_NEAR_GRABBING) {
this.setState(STATE_CONTINUE_NEAR_GRABBING);
} else {
// equipping
this.setState(STATE_CONTINUE_EQUIP_BD);
}
if (this.hand === RIGHT_HAND) {
Entities.callEntityMethod(this.grabbedEntity, "setRightHand");
} else {
@ -822,7 +847,60 @@ function MyController(hand) {
this.setState(STATE_RELEASE);
Entities.callEntityMethod(this.grabbedEntity, "releaseGrab");
}
}
};
this.pullTowardEquipPosition = function() {
this.lineOff();
var grabbedProperties = Entities.getEntityProperties(this.grabbedEntity, GRABBABLE_PROPERTIES);
var grabbableData = getEntityCustomData(GRABBABLE_DATA_KEY, this.grabbedEntity, DEFAULT_GRABBABLE_DATA);
// use a spring to pull the object to where it will be when equipped
var relativeRotation = { x: 0.0, y: 0.0, z: 0.0, w: 1.0 };
var relativePosition = { x: 0.0, y: 0.0, z: 0.0 };
if (grabbableData.spatialKey.relativePosition) {
relativePosition = grabbableData.spatialKey.relativePosition;
}
if (grabbableData.spatialKey.relativeRotation) {
relativeRotation = grabbableData.spatialKey.relativeRotation;
}
var handRotation = this.getHandRotation();
var handPosition = this.getHandPosition();
var targetRotation = Quat.multiply(handRotation, relativeRotation);
var offset = Vec3.multiplyQbyV(targetRotation, relativePosition);
var targetPosition = Vec3.sum(handPosition, offset);
if (typeof this.equipSpringID === 'undefined' ||
this.equipSpringID === null ||
this.equipSpringID === NULL_ACTION_ID) {
this.equipSpringID = Entities.addAction("spring", this.grabbedEntity, {
targetPosition: targetPosition,
linearTimeScale: EQUIP_SPRING_TIMEFRAME,
targetRotation: targetRotation,
angularTimeScale: EQUIP_SPRING_TIMEFRAME,
ttl: ACTION_TTL
});
if (this.equipSpringID === NULL_ACTION_ID) {
this.equipSpringID = null;
this.setState(STATE_OFF);
return;
}
} else {
Entities.updateAction(this.grabbedEntity, this.equipSpringID, {
targetPosition: targetPosition,
linearTimeScale: EQUIP_SPRING_TIMEFRAME,
targetRotation: targetRotation,
angularTimeScale: EQUIP_SPRING_TIMEFRAME,
ttl: ACTION_TTL
});
}
if (Vec3.distance(grabbedProperties.position, targetPosition) < EQUIP_SPRING_SHUTOFF_DISTANCE) {
Entities.deleteAction(this.grabbedEntity, this.equipSpringID);
this.equipSpringID = null;
this.setState(STATE_EQUIP);
}
};
this.nearTrigger = function() {
if (this.triggerSmoothedReleased()) {