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#include	<stdio.h>
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#include	"pic.h"
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#include	"y.tab.h"
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obj *movegen(void)
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{
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	static double prevdx, prevdy;
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	int i, some;
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	double defx, defy, dx, dy;
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	obj *p;
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	obj *ppos;
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	static int xtab[] = { 1, 0, -1, 0 };	/* R=0, U=1, L=2, D=3 */
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	static int ytab[] = { 0, 1, 0, -1 };
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	Attr *ap;
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	defx = getfval("movewid");
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	defy = getfval("moveht");
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	dx = dy = some = 0;
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	for (i = 0; i < nattr; i++) {
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		ap = &attr[i];
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		switch (ap->a_type) {
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		case TEXTATTR:
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			savetext(ap->a_sub, ap->a_val.p);
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			break;
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		case SAME:
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			dx = prevdx;
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			dy = prevdy;
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			some++;
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			break;
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		case LEFT:
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			dx -= (ap->a_sub==DEFAULT) ? defx : ap->a_val.f;
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			some++;
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			hvmode = L_DIR;
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			break;
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		case RIGHT:
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			dx += (ap->a_sub==DEFAULT) ? defx : ap->a_val.f;
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			some++;
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			hvmode = R_DIR;
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			break;
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		case UP:
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			dy += (ap->a_sub==DEFAULT) ? defy : ap->a_val.f;
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			some++;
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			hvmode = U_DIR;
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			break;
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		case DOWN:
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			dy -= (ap->a_sub==DEFAULT) ? defy : ap->a_val.f;
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			some++;
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			hvmode = D_DIR;
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			break;
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		case TO:
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			ppos = ap->a_val.o;
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			dx = ppos->o_x - curx;
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			dy = ppos->o_y - cury;
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			some++;
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			break;
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		case BY:
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			ppos = ap->a_val.o;
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			dx = ppos->o_x;
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			dy = ppos->o_y;
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			some++;
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			break;
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		case FROM:
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		case AT:
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			ppos = ap->a_val.o;
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			curx = ppos->o_x;
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			cury = ppos->o_y;
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			break;
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		}
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	}
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	if (some) {
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		defx = dx;
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		defy = dy;
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	} else {
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		defx *= xtab[hvmode];
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		defy *= ytab[hvmode];
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	}
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	prevdx = defx;
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	prevdy = defy;
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	extreme(curx, cury);
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	curx += defx;
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	cury += defy;
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	extreme(curx, cury);
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	p = makenode(MOVE, 0);
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	dprintf("M %g %g\n", curx, cury);
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	return(p);
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}