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<div class="title">Tutorial 19: Mouse and Joystick </div> </div>
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<p>This tutorial builds on example 04.Movement which showed how to handle keyboard events in Irrlicht. Here we'll handle mouse events and joystick events, if you have a joystick connected and a device that supports joysticks. These are currently Windows, Linux and SDL devices. </p><div class="fragment"><div class="line"><span class="preprocessor">#ifdef _MSC_VER</span></div><div class="line"><span class="comment">// We&#39;ll define this to stop MSVC complaining about sprintf().</span></div><div class="line"><span class="preprocessor">#define _CRT_SECURE_NO_WARNINGS</span></div><div class="line"><span class="preprocessor">#pragma comment(lib, &quot;Irrlicht.lib&quot;)</span></div><div class="line"><span class="preprocessor">#endif</span></div><div class="line"></div><div class="line"><span class="preprocessor">#include &lt;irrlicht.h&gt;</span></div><div class="line"><span class="preprocessor">#include &quot;driverChoice.h&quot;</span></div><div class="line"></div><div class="line"><span class="keyword">using namespace </span>irr;</div></div><!-- fragment --><p> Just as we did in example 04.Movement, we'll store the latest state of the mouse and the first joystick, updating them as we receive events. </p><div class="fragment"><div class="line"><span class="keyword">class </span>MyEventReceiver : <span class="keyword">public</span> IEventReceiver</div><div class="line">{</div><div class="line"><span class="keyword">public</span>:</div><div class="line"> <span class="comment">// We&#39;ll create a struct to record info on the mouse state</span></div><div class="line"> <span class="keyword">struct </span>SMouseState</div><div class="line"> {</div><div class="line"> core::position2di Position;</div><div class="line"> <span class="keywordtype">bool</span> LeftButtonDown;</div><div class="line"> SMouseState() : LeftButtonDown(false) { }</div><div class="line"> } MouseState;</div><div class="line"></div><div class="line"> <span class="comment">// This is the one method that we have to implement</span></div><div class="line"> <span class="keyword">virtual</span> <span class="keywordtype">bool</span> OnEvent(<span class="keyword">const</span> SEvent&amp; event)</div><div class="line"> {</div><div class="line"> <span class="comment">// Remember the mouse state</span></div><div class="line"> <span class="keywordflow">if</span> (event.EventType == irr::EET_MOUSE_INPUT_EVENT)</div><div class="line"> {</div><div class="line"> <span class="keywordflow">switch</span>(event.MouseInput.Event)</div><div class="line"> {</div><div class="line"> <span class="keywordflow">case</span> EMIE_LMOUSE_PRESSED_DOWN:</div><div class="line"> MouseState.LeftButtonDown = <span class="keyword">true</span>;</div><div class="line"> <span class="keywordflow">break</span>;</div><div class="line"></div><div class="line"> <span class="keywordflow">case</span> EMIE_LMOUSE_LEFT_UP:</div><div class="line"> MouseState.LeftButtonDown = <span class="keyword">false</span>;</div><div class="line"> <span class="keywordflow">break</span>;</div><div class="line"></div><div class="line"> <span class="keywordflow">case</span> EMIE_MOUSE_MOVED:</div><div class="line"> MouseState.Position.X = <span class="keyword">event</span>.MouseInput.X;</div><div class="line"> MouseState.Position.Y = <span class="keyword">event</span>.MouseInput.Y;</div><div class="line"> <span class="keywordflow">break</span>;</div><div class="line"></div><div class="line"> <span class="keywordflow">default</span>:</div><div class="line"> <span class="comment">// We won&#39;t use the wheel</span></div><div class="line"> <span class="keywordflow">break</span>;</div><div class="line"> }</div><div class="line"> }</div><div class="line"></div><div class="line"> <span class="comment">// The state of each connected joystick
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