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Use HTML for Holyc files as well
2024-03-24 21:24:44 +00:00
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<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> THRUST 1000
<a name="l2"></a>
<a name="l3"></a></span><span class=cF1>Bool</span><span class=cF0> blast_off,plane_hit;
<a name="l4"></a>
<a name="l5"></a></span><span class=cF9>CMass</span><span class=cF0> m1, </span><span class=cF2>//Bottom of rocket</span><span class=cF0>
<a name="l6"></a> m2, </span><span class=cF2>//Top of rocket</span><span class=cF0>
<a name="l7"></a> m3; </span><span class=cF2>//Plane</span><span class=cF0>
<a name="l8"></a></span><span class=cF9>CSpring</span><span class=cF0> s;
<a name="l9"></a>
<a name="l10"></a>#</span><span class=cF1>define</span><span class=cF0> ROCKET_HEIGHT 40
<a name="l11"></a>#</span><span class=cF1>define</span><span class=cF0> GROUND_Y (</span><span class=cF3>GR_HEIGHT</span><span class=cF0>-3*</span><span class=cF3>FONT_HEIGHT</span><span class=cF0>)
<a name="l12"></a></span><span class=cB0>
<a name="l13"></a>
<a name="l14"></a> </span><span class=cBA>&lt;1&gt;/* Graphics Not Rendered in HTML */</span><span class=cB0>
<a name="l15"></a>
<a name="l16"></a>
<a name="l17"></a>
<a name="l18"></a> </span><span class=cBA>&lt;2&gt;/* Graphics Not Rendered in HTML */</span><span class=cB0>
<a name="l19"></a>
<a name="l20"></a>
<a name="l21"></a>
<a name="l22"></a> </span><span class=cBA>&lt;3&gt;/* Graphics Not Rendered in HTML */</span><span class=cB0>
<a name="l23"></a>
<a name="l24"></a></span><span class=cF0>
<a name="l25"></a>
<a name="l26"></a>
<a name="l27"></a>
<a name="l28"></a>
<a name="l29"></a>
<a name="l30"></a>
<a name="l31"></a>
<a name="l32"></a>
<a name="l33"></a>
<a name="l34"></a>
<a name="l35"></a>
<a name="l36"></a>
<a name="l37"></a>
<a name="l38"></a></span><span class=cFA>
<a name="l39"></a>/* Graphics Not Rendered in HTML */</span><span class=cF0>
<a name="l40"></a>
<a name="l41"></a></span><span class=cF9>CDC</span><span class=cF0> *dc2;
<a name="l42"></a></span><span class=cF9>CMathODE</span><span class=cF0> *ode;
<a name="l43"></a>
<a name="l44"></a>#</span><span class=cF1>define</span><span class=cF0> STATE_NOZZLE_ANGLE 0
<a name="l45"></a>#</span><span class=cF1>define</span><span class=cF0> STATE_NOZZLE_ANGLE_VELOCITY 1
<a name="l46"></a>#</span><span class=cF1>define</span><span class=cF0> STATE_NUM 2
<a name="l47"></a>
<a name="l48"></a></span><span class=cF9>CD3</span><span class=cF0> target;
<a name="l49"></a></span><span class=cF1>F64</span><span class=cF0> my_dbg,antispin_coefficient;
<a name="l50"></a>
<a name="l51"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>DrawIt</span><span class=cF0>(</span><span class=cF9>CTask</span><span class=cF0> *task,</span><span class=cF9>CDC</span><span class=cF0> *dc)
<a name="l52"></a>{
<a name="l53"></a> </span><span class=cF9>I64</span><span class=cF0> i,x,y,cx=</span><span class=cF3>GR_WIDTH</span><span class=cF0>/2,cy=GROUND_Y;
<a name="l54"></a> </span><span class=cF1>F64</span><span class=cF0> theta=</span><span class=cF5>Arg</span><span class=cF0>(m2.x-m1.x,m2.y-m1.y),
<a name="l55"></a> nozzle_angle=ode-&gt;state[STATE_NOZZLE_ANGLE];
<a name="l56"></a>
<a name="l57"></a> </span><span class=cF1>if</span><span class=cF0> (blast_off) </span><span class=cF7>{</span><span class=cF0>
<a name="l58"></a> x=m1.x-10*</span><span class=cF5>Cos</span><span class=cF0>(theta+nozzle_angle);
<a name="l59"></a> y=m1.y-10*</span><span class=cF5>Sin</span><span class=cF0>(theta+nozzle_angle);
<a name="l60"></a> </span><span class=cF1>for</span><span class=cF0> (i=0;i&lt;6;i++) {
<a name="l61"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF7>(</span><span class=cF0>i^</span><span class=cFB>winmgr</span><span class=cF0>.updates</span><span class=cF7>)</span><span class=cF0>&amp;1)
<a name="l62"></a> dc-&gt;color=</span><span class=cF3>YELLOW</span><span class=cF0>;
<a name="l63"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l64"></a> dc-&gt;color=</span><span class=cF3>RED</span><span class=cF0>;
<a name="l65"></a> </span><span class=cF5>GrLine</span><span class=cF0>(dc,cx+</span><span class=cF7>(</span><span class=cF0>m1.x+i*</span><span class=cF5>Cos</span><span class=cF0>(theta-</span><span class=cF3>pi</span><span class=cF0>/2)</span><span class=cF7>)</span><span class=cF0>,cy-</span><span class=cF7>(</span><span class=cF0>m1.y+i*</span><span class=cF5>Sin</span><span class=cF0>(theta-</span><span class=cF3>pi</span><span class=cF0>/2)</span><span class=cF7>)</span><span class=cF0>,cx+x,cy-y);
<a name="l66"></a> </span><span class=cF5>GrLine</span><span class=cF0>(dc,cx+</span><span class=cF7>(</span><span class=cF0>m1.x+i*</span><span class=cF5>Cos</span><span class=cF0>(theta+</span><span class=cF3>pi</span><span class=cF0>/2)</span><span class=cF7>)</span><span class=cF0>,cy-</span><span class=cF7>(</span><span class=cF0>m1.y+i*</span><span class=cF5>Sin</span><span class=cF0>(theta+</span><span class=cF3>pi</span><span class=cF0>/2)</span><span class=cF7>)</span><span class=cF0>,cx+x,cy-y);
<a name="l67"></a> }
<a name="l68"></a>
<a name="l69"></a> </span><span class=cF1>for</span><span class=cF0> (i=0;i&lt;10;i++) {
<a name="l70"></a> </span><span class=cF1>switch</span><span class=cF0> (</span><span class=cF5>RandU16</span><span class=cF0>&amp;3) </span><span class=cF7>{</span><span class=cF0>
<a name="l71"></a> </span><span class=cF1>case</span><span class=cF0> 0: dc2-&gt;color=</span><span class=cF3>WHITE</span><span class=cF0>; </span><span class=cF1>break</span><span class=cF0>;
<a name="l72"></a> </span><span class=cF1>case</span><span class=cF0> 1: dc2-&gt;color=</span><span class=cF3>LTGRAY</span><span class=cF0>; </span><span class=cF1>break</span><span class=cF0>;
<a name="l73"></a> </span><span class=cF1>case</span><span class=cF0> 2: dc2-&gt;color=</span><span class=cF3>DKGRAY</span><span class=cF0>; </span><span class=cF1>break</span><span class=cF0>;
<a name="l74"></a> </span><span class=cF1>case</span><span class=cF0> 3: dc2-&gt;color=</span><span class=cF3>BLACK</span><span class=cF0>; </span><span class=cF1>break</span><span class=cF0>;
<a name="l75"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l76"></a> </span><span class=cF5>GrPlot</span><span class=cF0>(dc2,cx+</span><span class=cF7>(</span><span class=cF0>x+</span><span class=cF5>RandU16</span><span class=cF0>%12-6</span><span class=cF7>)</span><span class=cF0>,cy-</span><span class=cF7>(</span><span class=cF0>y+</span><span class=cF5>RandU16</span><span class=cF0>%12-6</span><span class=cF7>)</span><span class=cF0>);
<a name="l77"></a> }
<a name="l78"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l79"></a>
<a name="l80"></a> </span><span class=cF1>if</span><span class=cF0> (plane_hit)
<a name="l81"></a> </span><span class=cF5>Sprite3</span><span class=cF0>(dc,cx+m3.x,cy-m3.y,0,</span><span class=cFA>&lt;2&gt;</span><span class=cF0>);
<a name="l82"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l83"></a> </span><span class=cF5>Sprite3</span><span class=cF0>(dc,cx+m3.x,cy-m3.y,0,</span><span class=cFA>&lt;1&gt;</span><span class=cF0>);
<a name="l84"></a>
<a name="l85"></a> </span><span class=cF1>if</span><span class=cF0> (blast_off &amp;&amp; !plane_hit) </span><span class=cF7>{</span><span class=cF0>
<a name="l86"></a> dc-&gt;color=</span><span class=cF3>ROP_COLLISION</span><span class=cF0>;
<a name="l87"></a> dc-&gt;bkcolor=</span><span class=cF3>LTCYAN</span><span class=cF0>;
<a name="l88"></a> dc-&gt;collision_cnt=0;
<a name="l89"></a> </span><span class=cF5>Sprite3ZB</span><span class=cF0>(dc,cx+</span><span class=cF7>(</span><span class=cF0>m1.x+m2.x</span><span class=cF7>)</span><span class=cF0>/2,cy-</span><span class=cF7>(</span><span class=cF0>m1.y+m2.y</span><span class=cF7>)</span><span class=cF0>/2,0,</span><span class=cFA>&lt;3&gt;</span><span class=cF0>,-theta);
<a name="l90"></a> </span><span class=cF1>if</span><span class=cF0> (dc-&gt;collision_cnt&gt;100) {
<a name="l91"></a> </span><span class=cF5>Noise</span><span class=cF0>(1000,62,81);
<a name="l92"></a> plane_hit=</span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l93"></a> } </span><span class=cF1>else</span><span class=cF0>
<a name="l94"></a> </span><span class=cF5>Snd</span><span class=cF0>(22);
<a name="l95"></a> </span><span class=cF7>}</span><span class=cF0> </span><span class=cF1>else</span><span class=cF0> </span><span class=cF1>if</span><span class=cF0> (!plane_hit)
<a name="l96"></a> </span><span class=cF5>Snd</span><span class=cF0>;
<a name="l97"></a>
<a name="l98"></a> dc-&gt;color=</span><span class=cF3>ROP_EQU</span><span class=cF0>;
<a name="l99"></a> </span><span class=cF5>Sprite3</span><span class=cF0>(dc,0,GROUND_Y,0,</span><span class=cFA>&lt;4&gt;</span><span class=cF0>);
<a name="l100"></a> </span><span class=cF5>Sprite3ZB</span><span class=cF0>(dc,cx+</span><span class=cF7>(</span><span class=cF0>m1.x+m2.x</span><span class=cF7>)</span><span class=cF0>/2,cy-</span><span class=cF7>(</span><span class=cF0>m1.y+m2.y</span><span class=cF7>)</span><span class=cF0>/2,0,</span><span class=cFA>&lt;3&gt;</span><span class=cF0>,-theta);
<a name="l101"></a>
<a name="l102"></a> dc-&gt;color=</span><span class=cF3>RED</span><span class=cF0>;
<a name="l103"></a> </span><span class=cF5>GrCircle</span><span class=cF0>(dc,cx+target.x,cy-target.y,5);
<a name="l104"></a>
<a name="l105"></a> dc-&gt;color=</span><span class=cF3>BLUE</span><span class=cF0>;
<a name="l106"></a> </span><span class=cF5>GrCircle</span><span class=cF0>(dc,cx+m3.x,cy-m3.y,5);
<a name="l107"></a>
<a name="l108"></a> dc-&gt;color=</span><span class=cF3>BLACK</span><span class=cF0>;
<a name="l109"></a> </span><span class=cF5>GrPrint</span><span class=cF0>(dc,0,</span><span class=cF3>FONT_HEIGHT</span><span class=cF0>,</span><span class=cF6>&quot;%12.6f&quot;</span><span class=cF0>,my_dbg);
<a name="l110"></a>}
<a name="l111"></a>
<a name="l112"></a></span><span class=cF1>U0</span><span class=cF0> MyDerivative(</span><span class=cF9>CMathODE</span><span class=cF0> *,</span><span class=cF1>F64</span><span class=cF0>,</span><span class=cF1>F64</span><span class=cF0> *state,</span><span class=cF1>F64</span><span class=cF0> *DstateDt)
<a name="l113"></a>{
<a name="l114"></a> </span><span class=cF1>F64</span><span class=cF0> d,discriminant,v,a,theta=</span><span class=cF5>Arg</span><span class=cF0>(m2.state-&gt;x-m1.state-&gt;x,m2.state-&gt;y-m1.state-&gt;y),
<a name="l115"></a> DthetaDt,collision_estimate_t,target_heading,target_angle_error,
<a name="l116"></a> desired_nozzle_angle;
<a name="l117"></a> </span><span class=cF9>CD3</span><span class=cF0> p,p_target,p_body;
<a name="l118"></a>
<a name="l119"></a> </span><span class=cF2>//Unit vect pointing to top of rocket from bottom.</span><span class=cF0>
<a name="l120"></a> </span><span class=cF5>D3Sub</span><span class=cF0>(&amp;p_body,&amp;m2.state-&gt;x,&amp;m1.state-&gt;x);
<a name="l121"></a> </span><span class=cF5>D3Unit</span><span class=cF0>(&amp;p_body);
<a name="l122"></a>
<a name="l123"></a> </span><span class=cF2>//DthetaDt lets us prevent too much spin.</span><span class=cF0>
<a name="l124"></a> DthetaDt=antispin_coefficient*
<a name="l125"></a> (m2.state-&gt;DyDt*p_body.x-m2.state-&gt;DxDt*p_body.y-
<a name="l126"></a> m1.state-&gt;DyDt*p_body.x+m1.state-&gt;DxDt*p_body.y)/ROCKET_HEIGHT;
<a name="l127"></a>
<a name="l128"></a> </span><span class=cF2>//p_target is vect from top of rocket to plane.</span><span class=cF0>
<a name="l129"></a> </span><span class=cF5>D3Sub</span><span class=cF0>(&amp;p_target,&amp;m3.state-&gt;x,&amp;m2.state-&gt;x);
<a name="l130"></a>
<a name="l131"></a> </span><span class=cF2>//d=0.5at^2+vt</span><span class=cF0>
<a name="l132"></a> d=</span><span class=cF5>D3Norm</span><span class=cF0>(&amp;p_target);
<a name="l133"></a>
<a name="l134"></a> </span><span class=cF5>D3Copy</span><span class=cF0>(&amp;p,&amp;p_target);
<a name="l135"></a> </span><span class=cF5>D3Unit</span><span class=cF0>(&amp;p);
<a name="l136"></a> v=(m2.state-&gt;DxDt*p.x+m2.state-&gt;DyDt*p.y)-
<a name="l137"></a> (m3.state-&gt;DxDt*p.x+m3.state-&gt;DyDt*p.y);
<a name="l138"></a>
<a name="l139"></a> a=THRUST/(m1.mass+m2.mass);
<a name="l140"></a>
<a name="l141"></a> discriminant=v*v+4*0.5*a*d;
<a name="l142"></a> </span><span class=cF1>if</span><span class=cF0> (discriminant&gt;0)
<a name="l143"></a> collision_estimate_t=(-v+</span><span class=cF5>Sqrt</span><span class=cF7>(</span><span class=cF0>discriminant</span><span class=cF7>)</span><span class=cF0>)/a;
<a name="l144"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l145"></a> collision_estimate_t=0;
<a name="l146"></a> my_dbg=collision_estimate_t;
<a name="l147"></a>
<a name="l148"></a> </span><span class=cF2>//Aim for projected pos of plane at time of impact.</span><span class=cF0>
<a name="l149"></a> </span><span class=cF5>D3Copy</span><span class=cF0>(&amp;p,&amp;m3.state-&gt;DxDt);
<a name="l150"></a> </span><span class=cF5>D3MulEqu</span><span class=cF0>(&amp;p,collision_estimate_t);
<a name="l151"></a> </span><span class=cF5>D3AddEqu</span><span class=cF0>(&amp;p_target,&amp;p);
<a name="l152"></a>
<a name="l153"></a> </span><span class=cF5>D3Copy</span><span class=cF0>(&amp;target,&amp;p_target);
<a name="l154"></a> </span><span class=cF5>D3AddEqu</span><span class=cF0>(&amp;target,&amp;m2.state-&gt;x);
<a name="l155"></a>
<a name="l156"></a> target_heading=</span><span class=cF5>Arg</span><span class=cF0>(p_target.x,p_target.y);
<a name="l157"></a> target_angle_error=</span><span class=cF5>Wrap</span><span class=cF0>(theta-target_heading); </span><span class=cF2>//Force to range [-pi,pi)</span><span class=cF0>
<a name="l158"></a> desired_nozzle_angle=</span><span class=cF5>Clamp</span><span class=cF0>(50.0*DthetaDt+750*target_angle_error,-</span><span class=cF3>pi</span><span class=cF0>/8,</span><span class=cF3>pi</span><span class=cF0>/8);
<a name="l159"></a>
<a name="l160"></a> </span><span class=cF2>//For realism we limit the speed the nozzle angle can change.</span><span class=cF0>
<a name="l161"></a> DstateDt[STATE_NOZZLE_ANGLE]=state[STATE_NOZZLE_ANGLE_VELOCITY];
<a name="l162"></a> DstateDt[STATE_NOZZLE_ANGLE_VELOCITY]=
<a name="l163"></a> </span><span class=cF5>Clamp</span><span class=cF0>(10000*</span><span class=cF7>(</span><span class=cF0>desired_nozzle_angle-state[STATE_NOZZLE_ANGLE]</span><span class=cF7>)</span><span class=cF0>,
<a name="l164"></a> -1000,1000)-10.0*state[STATE_NOZZLE_ANGLE_VELOCITY]; </span><span class=cF2>//Damping</span><span class=cF0>
<a name="l165"></a>
<a name="l166"></a> </span><span class=cF1>if</span><span class=cF0> (blast_off) </span><span class=cF7>{</span><span class=cF0>
<a name="l167"></a> m1.DstateDt-&gt;DxDt+=THRUST*</span><span class=cF5>Cos</span><span class=cF0>(theta+state[STATE_NOZZLE_ANGLE]);
<a name="l168"></a> m1.DstateDt-&gt;DyDt+=THRUST*</span><span class=cF5>Sin</span><span class=cF0>(theta+state[STATE_NOZZLE_ANGLE]);
<a name="l169"></a>
<a name="l170"></a> m1.DstateDt-&gt;DyDt-=25; </span><span class=cF2>//Gravity</span><span class=cF0>
<a name="l171"></a> m2.DstateDt-&gt;DyDt-=25;
<a name="l172"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l173"></a>
<a name="l174"></a> </span><span class=cF2>//For more realism reduce the mass of the rocket because of fuel.</span><span class=cF0>
<a name="l175"></a> </span><span class=cF2>//You might also factor-in fuel slosh in the tank.</span><span class=cF0>
<a name="l176"></a>
<a name="l177"></a> </span><span class=cF2>//To do this, you would have to set-up state vars for mass and</span><span class=cF0>
<a name="l178"></a> </span><span class=cF2>//do A=F/m manually instead of relyin on </span><a href="/Wb/Adam/AMathODE.HC.HTML#l380"><span class=cF4>ODECallDerivative</span></a><span class=cF2>() to divide</span><span class=cF0>
<a name="l179"></a> </span><span class=cF2>//by mass.</span><span class=cF0>
<a name="l180"></a>}
<a name="l181"></a>
<a name="l182"></a></span><span class=cF1>U0</span><span class=cF0> Init()
<a name="l183"></a>{
<a name="l184"></a> </span><span class=cF5>DocClear</span><span class=cF0>;
<a name="l185"></a> </span><span class=cF6>&quot;$BG,LTCYAN$%h*c&quot;</span><span class=cF0>,</span><span class=cF5>ToI64</span><span class=cF0>(GROUND_Y/</span><span class=cF3>FONT_HEIGHT</span><span class=cF0>),</span><span class=cF6>'\n'</span><span class=cF0>;
<a name="l186"></a>
<a name="l187"></a> blast_off=</span><span class=cF3>FALSE</span><span class=cF0>;
<a name="l188"></a> plane_hit=</span><span class=cF3>FALSE</span><span class=cF0>;
<a name="l189"></a>
<a name="l190"></a> </span><span class=cF1>do</span><span class=cF0> antispin_coefficient=</span><span class=cF5>PopUpRangeF64Exp</span><span class=cF0>(0.1,10.001,</span><span class=cF5>Sqrt</span><span class=cF7>(</span><span class=cF0>10</span><span class=cF7>)</span><span class=cF0>,
<a name="l191"></a> </span><span class=cF6>&quot;%9.4f&quot;</span><span class=cF0>,</span><span class=cF6>&quot;Anti-spin Coefficient\n\n&quot;</span><span class=cF0>);
<a name="l192"></a> </span><span class=cF1>while</span><span class=cF0> (!</span><span class=cF7>(</span><span class=cF0>0.1&lt;=antispin_coefficient&lt;10.001</span><span class=cF7>)</span><span class=cF0>);
<a name="l193"></a>
<a name="l194"></a> </span><span class=cF2>//We don't clear que links.</span><span class=cF0>
<a name="l195"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;m1.</span><span class=cF1>start</span><span class=cF0>,0,</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CMass</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0>-</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CMass</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0>);
<a name="l196"></a> m1.y=0;
<a name="l197"></a> m1.mass=1.0;
<a name="l198"></a>
<a name="l199"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;m2.</span><span class=cF1>start</span><span class=cF0>,0,</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CMass</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0>-</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CMass</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0>);
<a name="l200"></a> m2.y=ROCKET_HEIGHT;
<a name="l201"></a> m2.mass=1.0;
<a name="l202"></a>
<a name="l203"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;m3.</span><span class=cF1>start</span><span class=cF0>,0,</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CMass</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0>-</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CMass</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0>);
<a name="l204"></a> m3.y=400;
<a name="l205"></a> m3.x=-300;
<a name="l206"></a> m3.DxDt=50;
<a name="l207"></a> m3.mass=1.0;
<a name="l208"></a>
<a name="l209"></a> </span><span class=cF5>MemSet</span><span class=cF0>(&amp;s.</span><span class=cF1>start</span><span class=cF0>,0,</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CSpring</span><span class=cF0>.</span><span class=cF1>end</span><span class=cF7>)</span><span class=cF0>-</span><span class=cF1>offset</span><span class=cF7>(</span><span class=cF9>CSpring</span><span class=cF0>.</span><span class=cF1>start</span><span class=cF7>)</span><span class=cF0>);
<a name="l210"></a> s.end1=&amp;m1;
<a name="l211"></a> s.end2=&amp;m2;
<a name="l212"></a> s.rest_len=ROCKET_HEIGHT;
<a name="l213"></a> s.const=10000;
<a name="l214"></a>
<a name="l215"></a> ode-&gt;state[STATE_NOZZLE_ANGLE]=0;
<a name="l216"></a> ode-&gt;state[STATE_NOZZLE_ANGLE_VELOCITY]=0;
<a name="l217"></a>
<a name="l218"></a> </span><span class=cF5>DCFill</span><span class=cF0>;
<a name="l219"></a>}
<a name="l220"></a>
<a name="l221"></a></span><span class=cF1>U0</span><span class=cF0> TaskEndCB()
<a name="l222"></a>{
<a name="l223"></a> </span><span class=cF5>DCFill</span><span class=cF0>;
<a name="l224"></a> </span><span class=cF5>SndTaskEndCB</span><span class=cF0>;
<a name="l225"></a>}
<a name="l226"></a>
<a name="l227"></a></span><span class=cF1>U0</span><span class=cF0> RocketScience()
<a name="l228"></a>{
<a name="l229"></a> </span><span class=cF5>SettingsPush</span><span class=cF0>; </span><span class=cF2>//See </span><a href="/Wb/Adam/TaskSettings.HC.HTML#l3"><span class=cF4>SettingsPush</span></a><span class=cF0>
<a name="l230"></a> </span><span class=cF5>Fs</span><span class=cF0>-&gt;text_attr=</span><span class=cF3>YELLOW</span><span class=cF0>&lt;&lt;4+</span><span class=cF3>BLUE</span><span class=cF0>;
<a name="l231"></a> </span><span class=cF5>MenuPush</span><span class=cF0>(
<a name="l232"></a> </span><span class=cF6>&quot;File {&quot;</span><span class=cF0>
<a name="l233"></a> </span><span class=cF6>&quot; Abort(,CH_SHIFT_ESC);&quot;</span><span class=cF0>
<a name="l234"></a> </span><span class=cF6>&quot; Exit(,CH_ESC);&quot;</span><span class=cF0>
<a name="l235"></a> </span><span class=cF6>&quot;}&quot;</span><span class=cF0>
<a name="l236"></a> </span><span class=cF6>&quot;Play {&quot;</span><span class=cF0>
<a name="l237"></a> </span><span class=cF6>&quot; Restart(,'\n');&quot;</span><span class=cF0>
<a name="l238"></a> </span><span class=cF6>&quot; Launch(,CH_SPACE);&quot;</span><span class=cF0>
<a name="l239"></a> </span><span class=cF6>&quot;}&quot;</span><span class=cF0>
<a name="l240"></a> );
<a name="l241"></a>
<a name="l242"></a> </span><span class=cF5>AutoComplete</span><span class=cF0>;
<a name="l243"></a> </span><span class=cF5>WinBorder</span><span class=cF0>;
<a name="l244"></a> </span><span class=cF5>WinMax</span><span class=cF0>;
<a name="l245"></a> </span><span class=cF5>DocCursor</span><span class=cF0>;
<a name="l246"></a> </span><span class=cF5>DocClear</span><span class=cF0>;
<a name="l247"></a> dc2=</span><span class=cF5>DCAlias</span><span class=cF0>;
<a name="l248"></a> </span><span class=cF5>Fs</span><span class=cF0>-&gt;task_end_cb=&amp;TaskEndCB;
<a name="l249"></a>
<a name="l250"></a> ode=</span><span class=cF5>ODENew</span><span class=cF0>(STATE_NUM,1e-6,</span><span class=cF3>ODEF_HAS_MASSES</span><span class=cF0>);
<a name="l251"></a> ode-&gt;derive=&amp;MyDerivative;
<a name="l252"></a> ode-&gt;drag_v2=0.002;
<a name="l253"></a> ode-&gt;drag_v3=0.00001;
<a name="l254"></a> ode-&gt;acceleration_limit=5e3;
<a name="l255"></a>
<a name="l256"></a> </span><span class=cF2>// ode-&gt;t_scale=0.1; //Uncomment this to go in slow motion.</span><span class=cF0>
<a name="l257"></a>
<a name="l258"></a> Init;
<a name="l259"></a> </span><span class=cF5>QueIns</span><span class=cF0>(&amp;m1,ode-&gt;last_mass);
<a name="l260"></a> </span><span class=cF5>QueIns</span><span class=cF0>(&amp;m2,ode-&gt;last_mass);
<a name="l261"></a> </span><span class=cF5>QueIns</span><span class=cF0>(&amp;m3,ode-&gt;last_mass);
<a name="l262"></a> </span><span class=cF5>QueIns</span><span class=cF0>(&amp;s,ode-&gt;last_spring);
<a name="l263"></a>
<a name="l264"></a> </span><span class=cF5>QueIns</span><span class=cF0>(ode,</span><span class=cF5>Fs</span><span class=cF0>-&gt;last_ode);
<a name="l265"></a>
<a name="l266"></a> </span><span class=cF5>Fs</span><span class=cF0>-&gt;draw_it=&amp;</span><span class=cF5>DrawIt</span><span class=cF0>;
<a name="l267"></a>
<a name="l268"></a> </span><span class=cF1>try</span><span class=cF0> </span><span class=cF7>{</span><span class=cF0>
<a name="l269"></a> </span><span class=cF5>GetKey</span><span class=cF0>;
<a name="l270"></a> blast_off=</span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l271"></a> </span><span class=cF1>while</span><span class=cF0> (</span><span class=cF3>TRUE</span><span class=cF0>) {
<a name="l272"></a> </span><span class=cF1>switch</span><span class=cF0> (</span><span class=cF5>GetChar</span><span class=cF7>(</span><span class=cF0>,</span><span class=cF3>FALSE</span><span class=cF7>)</span><span class=cF0>) </span><span class=cF7>{</span><span class=cF0>
<a name="l273"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF6>'\n'</span><span class=cF0>:
<a name="l274"></a> Init;
<a name="l275"></a> </span><span class=cF5>GetKey</span><span class=cF0>;
<a name="l276"></a> blast_off=</span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l277"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l278"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>CH_SHIFT_ESC</span><span class=cF0>:
<a name="l279"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>CH_ESC</span><span class=cF0>:
<a name="l280"></a> </span><span class=cF1>goto</span><span class=cF0> rs_done;
<a name="l281"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l282"></a> }
<a name="l283"></a>rs_done:
<a name="l284"></a> </span><span class=cF7>}</span><span class=cF0> </span><span class=cF1>catch</span><span class=cF0>
<a name="l285"></a> </span><span class=cF5>PutExcept</span><span class=cF0>;
<a name="l286"></a> </span><span class=cF5>QueRem</span><span class=cF0>(ode);
<a name="l287"></a> </span><span class=cF5>ODEDel</span><span class=cF0>(ode);
<a name="l288"></a> </span><span class=cF5>DocClear</span><span class=cF0>;
<a name="l289"></a> </span><span class=cF5>SettingsPop</span><span class=cF0>;
<a name="l290"></a> </span><span class=cF5>DCFill</span><span class=cF0>;
<a name="l291"></a> </span><span class=cF5>DCDel</span><span class=cF0>(dc2);
<a name="l292"></a> </span><span class=cF5>MenuPop</span><span class=cF0>;
<a name="l293"></a>}
<a name="l294"></a>
<a name="l295"></a>RocketScience;
</span></pre></body>
</html>
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