mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-27 02:31:00 +00:00
97 lines
1.4 KiB
C
97 lines
1.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#include "gr-sim.h"
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#include "tfv_utils.h"
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#include "tfv_zp.h"
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#include "demo_title.c"
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int main(int argc, char **argv) {
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int xx,yy,ch,color,x2,y2;
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double h,theta,dx,dy,theta2,thetadiff,nx,ny;
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int frame=0;
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double scale=1.0;
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grsim_init();
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gr();
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// clear_screens();
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ram[DRAW_PAGE]=PAGE0;
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clear_bottom();
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ram[DRAW_PAGE]=PAGE1;
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clear_bottom();
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ram[DRAW_PAGE]=PAGE2;
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clear_bottom();
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// clear_bottom(PAGE0);
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// clear_bottom(PAGE1);
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// clear_bottom(PAGE2);
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// grsim_unrle(demo_rle,0x400);
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grsim_unrle(demo_rle,0xc00);
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// gr_copy_to_current(0xc00);
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// page_flip();
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// gr_copy_to_current(0xc00);
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// page_flip();
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ram[DRAW_PAGE]=PAGE0;
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thetadiff=0;
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while(1) {
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grsim_update();
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ch=grsim_input();
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if (ch=='q') break;
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for(yy=0;yy<40;yy++) {
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for(xx=0;xx<40;xx++) {
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dx=(xx-20);
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dy=(yy-20);
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h=scale*sqrt((dx*dx)+(dy*dy));
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theta=atan2(dy,dx);
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theta2=theta+thetadiff;
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nx=h*cos(theta2);
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ny=h*sin(theta2);
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x2=nx+20;
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y2=ny+20;
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if ((x2<0) || (x2>39)) color=0;
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else if ((y2<0) || (y2>39)) color=0;
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else color=scrn_page(x2,y2,PAGE2);
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color_equals(color);
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plot(xx,yy);
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}
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}
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thetadiff-=(3.14/16.0);
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scale+=0.1;
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usleep(30000);
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frame++;
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/* reset */
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if (frame==128) {
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sleep(1);
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thetadiff=0;
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scale=1.0;
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frame=0;
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}
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}
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return 0;
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}
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