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< pre style = "font-family:courier;font-size:10pt" >
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< a name = "l1" > < / a > < span class = cF2 > //Uses < / span > < a href = "https://tomawezome.github.io/ZealOS/Demo/Lectures/FixedPoint.html#l1" > < span class = cF4 > fixed-point-arithmetic< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 >
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< a name = "l2" > < / a >
< a name = "l3" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > x[< / span > < span class = cFE > 16< / span > < span class = cF0 > ], y[< / span > < span class = cFE > 16< / span > < span class = cF0 > ], dx[< / span > < span class = cFE > 16< / span > < span class = cF0 > ], dy[< / span > < span class = cFE > 16< / span > < span class = cF0 > ];
< a name = "l4" > < / a >
< a name = "l5" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > Init()
< a name = "l6" > < / a > {
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< a name = "l7" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i;
< a name = "l8" > < / a > < / span > < span class = cF1 > F64< / span > < span class = cF0 > theta;
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< a name = "l9" > < / a >
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< a name = "l10" > < / a > < / span > < span class = cF5 > MemSet< / span > < span class = cF0 > (x, < / span > < span class = cFE > 0< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > x< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l11" > < / a > < / span > < span class = cF5 > MemSet< / span > < span class = cF0 > (y, < / span > < span class = cFE > 0< / span > < span class = cF0 > , < / span > < span class = cF1 > sizeof< / span > < span class = cF7 > (< / span > < span class = cF0 > y< / span > < span class = cF7 > )< / span > < span class = cF0 > );
< a name = "l12" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < < / span > < span class = cFE > 16< / span > < span class = cF0 > ; i++)
< a name = "l13" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l14" > < / a > theta = < / span > < span class = cF5 > Rand< / span > < span class = cF0 > *< / span > < span class = cFE > 2< / span > < span class = cF0 > *< / span > < span class = cF3 > pi< / span > < span class = cF0 > ;
< a name = "l15" > < / a > dx[i] = < / span > < span class = cF3 > I32_MAX< / span > < span class = cF0 > * < / span > < span class = cF5 > Cos< / span > < span class = cF0 > (theta);
< a name = "l16" > < / a > dy[i] = < / span > < span class = cF3 > I32_MAX< / span > < span class = cF0 > * < / span > < span class = cF5 > Sin< / span > < span class = cF0 > (theta);
< a name = "l17" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
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< a name = "l18" > < / a > }
< a name = "l19" > < / a >
< a name = "l20" > < / a > < / span > < span class = cF1 > U0< / span > < span class = cF0 > Bounce()
< a name = "l21" > < / a > {
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< a name = "l22" > < / a > < / span > < span class = cF9 > CDC< / span > < span class = cF0 > *dc = < / span > < span class = cF5 > DCAlias< / span > < span class = cF0 > ;
< a name = "l23" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > i, ch;
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< a name = "l24" > < / a >
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< a name = "l25" > < / a > Init;
< a name = "l26" > < / a > < / span > < span class = cF1 > try< / span > < span class = cF0 >
< a name = "l27" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF2 > //Catch < CTRL-ALT-c> < / span > < span class = cF0 >
< a name = "l28" > < / a > < / span > < span class = cF1 > do< / span > < span class = cF0 >
< a name = "l29" > < / a > {
< a name = "l30" > < / a > < / span > < span class = cF1 > for< / span > < span class = cF0 > (i = < / span > < span class = cFE > 0< / span > < span class = cF0 > ; i < < / span > < span class = cFE > 16< / span > < span class = cF0 > ; i++)
< a name = "l31" > < / a > < / span > < span class = cF7 > {< / span > < span class = cF0 >
< a name = "l32" > < / a > dc-> color =i;
< a name = "l33" > < / a > < / span > < span class = cF5 > GrPlot< / span > < span class = cF0 > (dc, x[i].i32[< / span > < span class = cFE > 1< / span > < span class = cF0 > ], y[i].i32[< / span > < span class = cFE > 1< / span > < span class = cF0 > ]);
< a name = "l34" > < / a > x[i] += dx[i];
< a name = "l35" > < / a > y[i] += dy[i];
< a name = "l36" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!< / span > < span class = cF7 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > < = x[i] < < / span > < span class = cF5 > Fs< / span > < span class = cF0 > -> pix_width < < < / span > < span class = cFE > 32< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l37" > < / a > {
< a name = "l38" > < / a > x[i] -= dx[i];
< a name = "l39" > < / a > dx[i] = -dx[i];
< a name = "l40" > < / a > }
< a name = "l41" > < / a > < / span > < span class = cF1 > if< / span > < span class = cF0 > (!< / span > < span class = cF7 > (< / span > < span class = cFE > 0< / span > < span class = cF0 > < = y[i] < < / span > < span class = cF5 > Fs< / span > < span class = cF0 > -> pix_height < < < / span > < span class = cFE > 32< / span > < span class = cF7 > )< / span > < span class = cF0 > )
< a name = "l42" > < / a > {
< a name = "l43" > < / a > y[i] -= dy[i];
< a name = "l44" > < / a > dy[i] = -dy[i];
< a name = "l45" > < / a > }
< a name = "l46" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l47" > < / a > < / span > < span class = cF5 > Yield< / span > < span class = cF0 > ;
< a name = "l48" > < / a > }
< a name = "l49" > < / a > < / span > < span class = cF1 > while< / span > < span class = cF0 > (!< / span > < span class = cF7 > (< / span > < span class = cF0 > ch = < / span > < span class = cF5 > CharScan< / span > < span class = cF7 > )< / span > < span class = cF0 > || < / span > < span class = cF7 > (< / span > < span class = cF0 > ch != < / span > < span class = cF3 > CH_SHIFT_ESC< / span > < span class = cF0 > & & ch != < / span > < span class = cF3 > CH_ESC< / span > < span class = cF7 > )< / span > < span class = cF0 > );
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< a name = "l50" > < / a >
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< a name = "l51" > < / a > < / span > < span class = cF7 > }< / span > < span class = cF0 >
< a name = "l52" > < / a > < / span > < span class = cF1 > catch< / span > < span class = cF0 >
< a name = "l53" > < / a > < / span > < span class = cF5 > PutExcept< / span > < span class = cF0 > ;
< a name = "l54" > < / a > < / span > < span class = cF5 > DCFill< / span > < span class = cF0 > (dc);
< a name = "l55" > < / a > < / span > < span class = cF5 > DCDel< / span > < span class = cF0 > (dc);
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< a name = "l56" > < / a > }
< a name = "l57" > < / a >
< a name = "l58" > < / a > Bounce;
< / span > < / pre > < / body >
< / html >
