115 lines
2.6 KiB
C++
115 lines
2.6 KiB
C++
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$SP,"<1>",BI=1$
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#define NUM_APPLES 128
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I64 x[NUM_APPLES],y[NUM_APPLES],
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cur_apple,cur_sprite_elem_num,cur_dist,
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cur_x=0,cur_y=0;
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U8 buf[128];
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U0 DrawIt(CTask *,CDC *dc)
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{
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I64 i,best_dist=MAX_I64,best_apple=0,best_sprite_elem_num=0;
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dc->flags|=DCF_LOCATE_NEAREST;
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dc->cur_x=cur_x;
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dc->cur_y=cur_y;
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dc->cur_z=0;
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for (i=0;i<NUM_APPLES;i++) {
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dc->nearest_sprite_elem_num=0;
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dc->nearest_dist=MAX_I64;
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Sprite3(dc,x[i],y[i],0,$IB,"<1>",BI=1$);
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if (dc->nearest_dist<=best_dist) {
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//Distance to nearest pix, squared
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//$LK,"Sqrt",A="MN:Sqrt"$() is expensive so we work with distance squared.
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best_dist=dc->nearest_dist;
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best_apple=i;
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//Elements are the individual lines or whatever of the CSprite.
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best_sprite_elem_num=dc->nearest_sprite_elem_num;
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}
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}
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cur_apple=best_apple;
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cur_dist=best_dist;
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cur_sprite_elem_num=best_sprite_elem_num;
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dc->color=WHITE;
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GrRect(dc,5,5,StrLen(buf)*FONT_WIDTH,FONT_HEIGHT);
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dc->color=BLACK;
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GrPrint(dc,5,5,buf);
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}
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U0 Pick()
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{
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I64 i,msg_code,a1,a2,best_i=0,old_x,old_y;
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for (i=0;i<NUM_APPLES;i++) {
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x[i]=RandU16%GR_WIDTH;
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y[i]=RandU16%GR_HEIGHT;
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}
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*buf=0;
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SettingsPush; //See $LK,"SettingsPush",A="MN:SettingsPush"$
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Preempt(OFF);
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WordStat;
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DocCursor;
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DocClear;
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Fs->draw_it=&DrawIt;
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Fs->win_inhibit=WIG_TASK_DFT-WIF_SELF_FOCUS-WIF_SELF_BORDER;
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try {
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while (TRUE) {
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if (GetMsg(&a1,&a2,1<<MSG_KEY_DOWN|1<<MSG_IP_L_DOWN)==MSG_KEY_DOWN)
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goto pi_done;
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//Use screen coordinates, not window (a1,a2)
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//$LK,"ip.pos.x",A="MN:ip"$ and $LK,"ip.pos.y",A="MN:ip"$ are global vars updated
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//updated by the window mgr to hold the
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//screen coordinates of the input ptr (mouse).
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cur_x=ip.pos.x; cur_y=ip.pos.y;
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//Wait for window mgr to call DrawIt()
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WinMgrSync;
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best_i=cur_apple;
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old_x=x[best_i];
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old_y=y[best_i];
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StrPrint(buf,"Elem #%d Dist Squared:%d",cur_sprite_elem_num,cur_dist);
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do {
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msg_code=GetMsg(&a1,&a2,1<<MSG_KEY_DOWN|1<<MSG_IP_MOVE|1<<MSG_IP_L_UP);
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if (msg_code==MSG_KEY_DOWN)
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goto pi_done;
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x[best_i]=ip.pos.x-cur_x+old_x;
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y[best_i]=ip.pos.y-cur_y+old_y;
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} while (msg_code!=MSG_IP_L_UP);
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}
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pi_done:
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GetMsg(,,1<<MSG_KEY_UP);
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} catch
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PutExcept;
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SettingsPop;
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}
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Pick;
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q
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ûÿÿÿ
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ûÿÿÿ úÿÿÿ
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ÿÿÿÿ üÿÿÿ |