paint.c

嵌入式系统基础课件

#include "libepc.h"
#include "tetris.h"

#define	BLOCK		0xDB

/* ------------------------------------------------------------ */
/* Paints the tetris object whose upper left corner is at row,	*/
/* col, with rotation rot, using color clr.  If on is TRUE, it	*/
/* paints the object; if on is FALSE, it erases the object.	*/
/* ------------------------------------------------------------ */
void PaintObject(int row, int col, int rot, BOOL on, char clr)
	{
	WORD16 cell ;
	int r ;

	cell = on ? CELL(BLOCK, clr) : EMPTY ;
	for (r = 0; r < 2; r++)
		{
		int c ;

		for (c = 0; c < 4; c++)
			{
			if (!On(rot, r, c)) continue ;
			*Cell(row + r, col + c) = cell ;
			}
		}
	}