tiles and block no longer delete on script end, now user can delete all the stuff with a button click instead. Also blocks now spawn with random angular velocity for spinning fun

examples/blockWorld.js

@@ -0,0 +1,201 @@
+//  blockWorld.js
+//  examples
+//
+//  Created by Eric Levin on May 26, 2015
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Creates a floor of tiles and then drops planky blocks at random points above the tile floor
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+var TILE_SIZE = 7
+var GENERATE_INTERVAL = 50;
+var NUM_ROWS = 10;
+var angVelRange = 4;
+
+var floorTiles = [];
+var blocks = [];
+var blockSpawner;
+
+HIFI_PUBLIC_BUCKET = "http://s3.amazonaws.com/hifi-public/";
+
+
+var floorPos = Vec3.sum(MyAvatar.position, {
+  x: 0,
+  y: -2,
+  z: 0
+});
+var x = floorPos.x;
+
+var currentRowIndex = 0;
+var currentColumnIndex = 0;
+
+var DROP_HEIGHT = floorPos.y + 5;
+var BLOCK_GRAVITY = {
+  x: 0,
+  y: -9,
+  z: 0
+};
+var BLOCK_SIZE = {
+  x: 0.2,
+  y: 0.1,
+  z: 0.8
+};
+
+var bounds = {
+  xMin: floorPos.x,
+  xMax: floorPos.x + (TILE_SIZE * NUM_ROWS) - TILE_SIZE,
+  zMin: floorPos.z,
+  zMax: floorPos.z + (TILE_SIZE * NUM_ROWS) - TILE_SIZE
+};
+
+var screenSize = Controller.getViewportDimensions();
+
+var BUTTON_SIZE = 32;
+var PADDING = 3;
+
+var offButton = Overlays.addOverlay("image", {
+  x: screenSize.x / 2 - BUTTON_SIZE * 2 + PADDING,
+  y: screenSize.y - (BUTTON_SIZE + PADDING),
+  width: BUTTON_SIZE,
+  height: BUTTON_SIZE,
+  imageURL: HIFI_PUBLIC_BUCKET + "images/close.png",
+  color: {
+    red: 255,
+    green: 255,
+    blue: 255
+  },
+  alpha: 1
+});
+
+var deleteButton = Overlays.addOverlay("image", {
+  x: screenSize.x / 2 - BUTTON_SIZE,
+  y: screenSize.y - (BUTTON_SIZE + PADDING),
+  width: BUTTON_SIZE,
+  height: BUTTON_SIZE,
+  imageURL: HIFI_PUBLIC_BUCKET + "images/delete.png",
+  color: {
+    red: 255,
+    green: 255,
+    blue: 255
+  },
+  alpha: 1
+});
+
+
+function generateFloor() {
+  for (var z = floorPos.z; currentColumnIndex < NUM_ROWS; z += TILE_SIZE, currentColumnIndex++) {
+    floorTiles.push(Entities.addEntity({
+      type: 'Box',
+      position: {
+        x: x,
+        y: floorPos.y,
+        z: z
+      },
+      dimensions: {
+        x: TILE_SIZE,
+        y: 2,
+        z: TILE_SIZE
+      },
+      color: {
+        red: randFloat(70, 120),
+        green: randFloat(70, 71),
+        blue: randFloat(70, 80)
+      },
+      // collisionsWillMove: true
+    }));
+  }
+
+  currentRowIndex++;
+  if (currentRowIndex < NUM_ROWS) {
+    currentColumnIndex = 0;
+    x += TILE_SIZE;
+    Script.setTimeout(generateFloor, GENERATE_INTERVAL);
+  } else {
+    //Once we're done generating floor, drop planky blocks at random points on floor
+    blockSpawner = Script.setInterval(function() {
+      dropBlock();
+    }, GENERATE_INTERVAL)
+  }
+}
+
+function dropBlock() {
+  var dropPos = floorPos;
+  dropPos.y = DROP_HEIGHT;
+  dropPos.x = randFloat(bounds.xMin, bounds.xMax);
+  dropPos.z = randFloat(bounds.zMin, bounds.zMax);
+  blocks.push(Entities.addEntity({
+    type: "Model",
+    modelURL: 'http://s3.amazonaws.com/hifi-public/marketplace/hificontent/Games/blocks/block.fbx',
+    shapeType: 'box',
+    position: dropPos,
+    dimensions: BLOCK_SIZE,
+    collisionsWillMove: true,
+    gravity: {
+      x: 0,
+      y: -9,
+      z: 0
+    },
+    velocity: {
+      x: 0,
+      y: .1,
+      z: 0
+    },
+    angularVelocity: {
+      x: randFloat(-angVelRange, angVelRange),
+      y: randFloat(-angVelRange, angVelRange),
+      z: randFloat(-angVelRange, angVelRange),
+    }
+  }));
+}
+
+function mousePressEvent(event) {
+  var clickedOverlay = Overlays.getOverlayAtPoint({
+    x: event.x,
+    y: event.y
+  });
+  if (clickedOverlay == offButton) {
+    Script.clearInterval(blockSpawner);
+  } 
+  if(clickedOverlay == deleteButton){
+    destroyStuff();
+  }
+}
+
+generateFloor();
+
+function cleanup() {
+  // for (var i = 0; i < floorTiles.length; i++) {
+  //   Entities.deleteEntity(floorTiles[i]);
+  // }
+  // for (var i = 0; i < blocks.length; i++) {
+  //   Entities.deleteEntity(blocks[i]);
+  // }
+  Overlays.deleteOverlay(offButton);
+  Overlays.deleteOverlay(deleteButton)
+  Script.clearInterval(blockSpawner);
+}
+
+function destroyStuff() {
+  for (var i = 0; i < floorTiles.length; i++) {
+    Entities.deleteEntity(floorTiles[i]);
+  }
+  for (var i = 0; i < blocks.length; i++) {
+    Entities.deleteEntity(blocks[i]);
+  }
+  Script.clearInterval(blockSpawner);
+
+}
+
+function randFloat(low, high) {
+  return Math.floor(low + Math.random() * (high - low));
+}
+
+function map(value, min1, max1, min2, max2) {
+  return min2 + (max2 - min2) * ((value - min1) / (max1 - min1));
+}
+
+Script.scriptEnding.connect(cleanup);
+Controller.mousePressEvent.connect(mousePressEvent);