74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
#include <stdio.h>
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#include <ncurses.h>
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#include <unistd.h>
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#include <math.h>
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#include <signal.h>
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#include "grid.h"
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#include "vect.h"
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static volatile int running = 1;
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static void contain(int* pos, int* velocity, int min, int max);
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// if ^C is pressed, set running flag to false
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static void signalHandler(int sig);
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int main()
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{
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signal(SIGINT, signalHandler);
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int count = 0;
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//init
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initscr();
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//noecho();
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curs_set(FALSE);
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int width = 0;
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int height = 0;
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// stdscr created by initscr()
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getmaxyx(stdscr, height, width);
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Vect2i pos = {0, 0};
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Vect2i vel = {1, 1};
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const int DELAY = 33*pow(10,3);
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Grid grid;
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initGrid(&grid, width, height);
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putPixel(&grid, pos.x, pos.y);
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while (running) {
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clearGrid(&grid);
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putPixel(&grid, pos.x, pos.y);
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drawGrid(&grid);
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refresh();
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moveVect2i(&pos, vel.x, vel.y);
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contain(&pos.x, &vel.x, 0, width-1);
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contain(&pos.y, &vel.y, 0, height-1);
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usleep(DELAY);
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}
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endwin();
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return 0;
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}
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static void contain(int* pos, int* velocity, int min, int max)
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{
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bool above_max = max < *pos;
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bool below_min = *pos < min;
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bool not_in_range = below_min || above_max;
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if (not_in_range) {
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if (below_min) *pos = min;
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else if (above_max) *pos = max;
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*velocity *= -1;
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}
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}
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static void signalHandler(int sig)
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{
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printf("interrupt\n");
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running = 0;
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}
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