src/paddle.c


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#include <curses.h>

#include "paddle.h"
#include "board.h"

void
update_paddle(struct paddle *pad)
{
	*pad->pos += pad->speed * pad->dir;
	if (*pad->pos < pad->min_pos + *pad->size / 2) {
		*pad->pos = pad->min_pos + *pad->size / 2;
	}
	if (*pad->pos > pad->max_pos - *pad->size / 2) {
		*pad->pos = pad->max_pos - *pad->size / 2;
	}
}

void
clear_paddle(struct paddle *pad)
{
	int x_off;
	int y_off;
	int x;
	int y;

	x_off = pad->x - pad->width / 2;
	y_off = pad->y - pad->height / 2;

	for (x = 0; x < pad->width; ++x) {
		for (y = 0; y < pad->height; ++y) {
			mvprintw(y_off + y, x_off + x, " ");
		}
	}
}

void
draw_paddle(struct paddle *pad)
{
	int x_off;
	int y_off;
	int x;
	int y;

	x_off = pad->x - pad->width / 2;
	y_off = pad->y - pad->height / 2;

	attr_on(WA_REVERSE, NULL);
	for (x = 0; x < pad->width; ++x) {
		for (y = 0; y < pad->height; ++y) {
			mvprintw(y_off + y, x_off + x, " ");
		}
	}
	attr_off(WA_REVERSE, NULL);
}