Merge pull request #5275 from howard-stearns/sword-button-away-hit-points

Add a button to create/toggle-away sword.

examples/example/games/sword.js

@@ -11,7 +11,7 @@
 //
 "use strict";
 /*jslint vars: true*/
-var Script, Entities, MyAvatar, Window, Controller, Vec3, Quat; // Referenced globals provided by High Fidelity.
+var Script, Entities, MyAvatar, Window, Overlays, Controller, Vec3, Quat, print; // Referenced globals provided by High Fidelity.
 
 var hand = "right";
 var nullActionID = "00000000-0000-0000-0000-000000000000";
@@ -20,39 +20,86 @@ var controllerActive;
 var stickID = null;
 var actionID = nullActionID;
 var dimensions = { x: 0.3, y: 0.1, z: 2.0 };
+var AWAY_ORIENTATION =  Quat.fromPitchYawRollDegrees(-90, 0, 0);
 
 var stickModel = "https://hifi-public.s3.amazonaws.com/eric/models/stick.fbx";
 var swordModel = "https://hifi-public.s3.amazonaws.com/ozan/props/sword/sword.fbx";
 var whichModel = "sword";
+var rezButton = Overlays.addOverlay("image", {
+    x: 100,
+    y: 380,
+    width: 32,
+    height: 32,
+    imageURL: "http://s3.amazonaws.com/hifi-public/images/delete.png",
+    color: {
+        red: 255,
+        green: 255,
+        blue: 255
+    },
+    alpha: 1
+});
 
-// sometimes if this is run immediately the stick doesn't get created?  use a timer.
+var health = 100;
-Script.setTimeout(function () {
+var display;
-    stickID = Entities.addEntity({
+var isAway = false;
-        type: "Model",
+function updateDisplay() {
-        modelURL: (whichModel === "sword") ? swordModel : stickModel,
+    var text = health.toString();
-        //compoundShapeURL: "https://hifi-public.s3.amazonaws.com/eric/models/stick.obj",
+    if (!display) {
-        shapeType: "box",
+        health = 100;
-        dimensions: dimensions,
+        display = Overlays.addOverlay("text", {
-        position: MyAvatar.getRightPalmPosition(), // initial position doesn't matter, as long as it's close
+            text: text,
-        rotation: MyAvatar.orientation,
+            font: { size: 20 },
-        damping: 0.1,
+            color: {red: 0, green: 255, blue: 0},
-        collisionSoundURL: "http://public.highfidelity.io/sounds/Collisions-hitsandslaps/swordStrike1.wav",
+            backgroundColor: {red: 100, green: 100, blue: 100}, // Why doesn't this and the next work?
-        restitution: 0.01,
+            backgroundAlpha: 0.9,
-        collisionsWillMove: true
+            x: Window.innerWidth - 50,
-    });
+            y: 50
-    actionID = Entities.addAction("hold", stickID, {relativePosition: {x: 0.0, y: 0.0, z: -dimensions.z / 2},
+        });
-                                                    hand: hand,
+    } else {
-                                                    timeScale: 0.15});
+        Overlays.editOverlay(display, {text: text});
-}, 3000);
+    }
-
+}
-
+function removeDisplay() {
-function cleanUp() {
+    if (display) {
-    Entities.deleteEntity(stickID);
+        Overlays.deleteOverlay(display);
+        display = null;
+    }
 }
 
+function cleanUp() {
+    if (stickID) {
+        Entities.deleteAction(stickID, actionID);
+        Entities.deleteEntity(stickID);
+        stickID = null;
+        actionID = null;
+    }
+    removeDisplay();
+    Overlays.deleteOverlay(rezButton);
+}
+
+function computeEnergy(collision, entityID) {
+    var id = entityID || collision.idA || collision.idB;
+    var entity = id && Entities.getEntityProperties(id);
+    var mass = entity ? (entity.density * entity.dimensions.x * entity.dimensions.y * entity.dimensions.z) : 1;
+    var linearVelocityChange = Vec3.length(collision.velocityChange);
+    var energy = 0.5 * mass * linearVelocityChange * linearVelocityChange;
+    return Math.min(Math.max(1.0, Math.round(energy)), 20);
+}
+function gotHit(collision) {
+    if (isAway) { return; }
+    var energy = computeEnergy(collision);
+    health -= energy;
+    updateDisplay();
+}
+function scoreHit(idA, idB, collision) {
+    if (isAway) { return; }
+    var energy = computeEnergy(collision, idA);
+    health += energy;
+    updateDisplay();
+}
 
 function positionStick(stickOrientation) {
-    var baseOffset = {x: 0.0, y: 0.0, z: -dimensions.z / 2};
+    var baseOffset = {x: 0.3, y: 0.0, z: -dimensions.z / 2}; // FIXME: don't move yourself by colliding with your own capsule. Fudge of 0.3 in x.
     var offset = Vec3.multiplyQbyV(stickOrientation, baseOffset);
     Entities.updateAction(stickID, actionID, {relativePosition: offset,
                                               relativeRotation: stickOrientation});
@@ -60,7 +107,7 @@ function positionStick(stickOrientation) {
 
 
 function mouseMoveEvent(event) {
-    if (!stickID || actionID === nullActionID) {
+    if (!stickID || actionID === nullActionID || isAway) {
         return;
     }
     var windowCenterX = Window.innerWidth / 2;
@@ -98,7 +145,51 @@ function update() {
     positionStick(stickOrientation);
 }
 
+function toggleAway() {
+    isAway = !isAway;
+    if (isAway) {
+        positionStick(AWAY_ORIENTATION);
+        removeDisplay();
+    } else {
+        updateDisplay();
+    }
+}
+
+function onClick(event) {
+    switch (Overlays.getOverlayAtPoint({x: event.x, y: event.y})) {
+    case rezButton:
+        if (!stickID) {
+            stickID = Entities.addEntity({
+                type: "Model",
+                modelURL: (whichModel === "sword") ? swordModel : stickModel,
+                //compoundShapeURL: "https://hifi-public.s3.amazonaws.com/eric/models/stick.obj",
+                shapeType: "box",
+                dimensions: dimensions,
+                position: MyAvatar.getRightPalmPosition(), // initial position doesn't matter, as long as it's close
+                rotation: MyAvatar.orientation,
+                damping: 0.1,
+                collisionSoundURL: "http://public.highfidelity.io/sounds/Collisions-hitsandslaps/swordStrike1.wav",
+                restitution: 0.01,
+                collisionsWillMove: true
+            });
+            actionID = Entities.addAction("hold", stickID, {relativePosition: {x: 0.0, y: 0.0, z: -dimensions.z / 2},
+                                                            hand: hand,
+                                                            timeScale: 0.15});
+            if (actionID === nullActionID) {
+                print('*** FAILED TO MAKE SWORD ACTION ***');
+                cleanUp();
+            }
+            Script.addEventHandler(stickID, 'collisionWithEntity', scoreHit);
+            updateDisplay();
+        } else {
+            toggleAway();
+        }
+        break;
+    }
+}
 
 Script.scriptEnding.connect(cleanUp);
 Controller.mouseMoveEvent.connect(mouseMoveEvent);
+Controller.mousePressEvent.connect(onClick);
 Script.update.connect(update);
+MyAvatar.collisionWithEntity.connect(gotHit);