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[/] [openmsp430/] [trunk/] [fpga/] [actel_m1a3pl_dev_kit/] [software/] [spacewar/] [rocket1.c] - Rev 224
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#include "spacewar.h" //************************************************************ // externals // extern volatile int xinit, yinit; extern void cline(int, int); extern void point(rkt_data *); //************************************************************ // // rkt1 // // draws rocket # 1 // /* Description: Draws rocket 1 made of five lines. This rocket looks like the starship enterprise. Also draws rocket 1 torpedos as points. */ void rocket1(rkt_data *rkt1) { int dif_yx, sum_yx; int xfin, yfin; dif_yx = (rkt1->ysize >> 1) - (rkt1->xsize >> 1); sum_yx = (rkt1->ysize >> 1) + (rkt1->xsize >> 1); xinit = rkt1->xdisp + rkt1->xsize; yinit = rkt1->ydisp + rkt1->ysize; xfin = rkt1->xdisp - (rkt1->xsize >> 1); yfin = rkt1->ydisp - (rkt1->ysize >> 1); cline(xfin, yfin); // draw line #1 xfin = xinit - dif_yx; yfin = yinit + sum_yx; xinit -= sum_yx; yinit -= dif_yx; cline(xfin, yfin); // draw line #2 xfin = xinit + sum_yx; yfin = yinit + dif_yx; cline(xfin, yfin); // draw line #3 xfin = xinit + dif_yx; yfin = yinit - sum_yx; cline(xfin, yfin); // draw line #4 xfin = xinit - sum_yx + dif_yx; yfin = yinit - sum_yx - dif_yx; cline(xfin, yfin); // draw line #5 point(rkt1); // update and draw rkt1's torpedoes }
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