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ant

#include "paper.h"

#define up 1
#define right 2
#define down 3
#define left 4
int ant_looks;

void ant_turns_left_then_move();
void ant_turns_right_then_move();

int main()
{
ant_looks = right;
init_paper(75,75,8,0.0005,0);
move_to(37,37);
repeat(11000) {
if (!is_colored()) {
colorize();
ant_turns_right_then_move();
} else {
erase();
ant_turns_left_then_move();
}
} loop;
display_paper();
return 0;
}

void ant_turns_left_then_move() {
switch (ant_looks) {
case up : // ant looks up
ant_looks = left;
move_left();
break;
case left : // ant looks left
ant_looks = down;
move_down();
break;
case down : // ant looks down
ant_looks = right;
move_right();
break;
case right : // ant looks right
ant_looks = up;
move_up();
break;
}
}

void ant_turns_right_then_move() {
switch (ant_looks) {
case up : // ant looks up
ant_looks = right;
move_right();
break;
case right : // ant looks right
ant_looks = down;
move_down();
break;
case down : // ant looks down
ant_looks = left;
move_left();
break;
case left : // ant looks left
ant_looks = up;
move_up();
break;
}
}