<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Roger,<div class="">This is particularly difficult for the room as it does not have an easily ideifieablle sub-parts to detect when an object is about to collide with it.</div><div class=""><br class=""></div><div class="">One solution might be to place different shapes with an opacity of 0 near each of the walls, and then use the CollisionStartListener to listen for when the moving object approaches these invisible objects.</div><div class=""><br class=""></div><div class="">See the following links for more information:</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.alice.org/resources/how-tos/setting-up-collision-detection/" class="">http://www.alice.org/resources/how-tos/setting-up-collision-detection/</a></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="http://www.alice.org/resources/how-tos/setting-up-proximity-detection/" class="">http://www.alice.org/resources/how-tos/setting-up-proximity-detection/</a></div><div class=""><br class=""></div><div class="">Please let me know if you have any questions.</div><div class=""><br class=""></div><div class="">All the best,</div><div class="">Don Slater</div><div class=""><br class=""></div><div class="">Alice Project<br class=""><div><blockquote type="cite" class=""><div class="">On Mar 16, 2018, at 11:02 AM, Crowe, Roger <<a href="mailto:rcrowe@greenville.k12.sc.us" class="">rcrowe@greenville.k12.sc.us</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div id="divtagdefaultwrapper" dir="ltr" style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; font-size: 12pt; font-family: Calibri, Helvetica, sans-serif;" class=""><div style="margin-top: 0px; margin-bottom: 0px;" class="">Hi,</div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class="">When using environments like class rooms in worlds and creating user interactive programs, what is the best way to prevent a user driving a character or camera through a wall. Is there collision control? Thanks for suggestions and if you can attach files that would be great.</div><div style="margin-top: 0px; margin-bottom: 0px;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px;" class="">Thanks!</div><div style="margin-top: 0px; margin-bottom: 0px;" class="">Roger Crowe</div><div style="margin-top: 0px; margin-bottom: 0px;" class="">J L Mann HS</div></div><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">alice-teachers mailing list</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="mailto:alice-teachers@lists.andrew.cmu.edu" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">alice-teachers@lists.andrew.cmu.edu</a><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">To change settings or unsubscribe visit:</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers</a></div></blockquote></div><br class=""></div></body></html>