WebSVN – HelenOS – Diff – /branches/dd/uspace/app/tetris/shapes.c



 * Return true iff the given shape fits in the given position,
 * taking the current board into account.
 */
int fits_in(const struct shape *shape, int pos)
{
    const int *o = shape->off;
   
    if ((board[pos]) || (board[pos + *o++]) || (board[pos + *o++]) ||
        (board[pos + *o]))
        return 0;
   

 * Write the given shape into the current board, turning it on
 * if `onoff' is 1, and off if `onoff' is 0.
 */
void place(const struct shape *shape, int pos, int onoff)
{
    const int *o = shape->off;
   
    board[pos] = onoff ? shape->color : 0x000000;
    board[pos + *o++] = onoff ? shape->color : 0x000000;
    board[pos + *o++] = onoff ? shape->color : 0x000000;
    board[pos + *o] = onoff ? shape->color : 0x000000;

Subversion Repositories HelenOS

(root)/branches/dd/uspace/app/tetris/shapes.c @ 4642 – Rev 4537 → 4688

Rev 4537		Rev 4688
Line 85...		Line 85...
85	* Return true iff the given shape fits in the given position,	85	* Return true iff the given shape fits in the given position,
86	* taking the current board into account.	86	* taking the current board into account.
87	*/	87	*/
88	int fits_in(const struct shape *shape, int pos)	88	int fits_in(const struct shape *shape, int pos)
89	{	89	{
90	int *o = shape->off;	90	const int *o = shape->off;
91		91
92	if ((board[pos]) \|\| (board[pos + o++]) \|\| (board[pos + o++]) \|\|	92	if ((board[pos]) \|\| (board[pos + o++]) \|\| (board[pos + o++]) \|\|
93	(board[pos + *o]))	93	(board[pos + *o]))
94	return 0;	94	return 0;
95		95
Line 100...		Line 100...
100	* Write the given shape into the current board, turning it on	100	* Write the given shape into the current board, turning it on
101	* if `onoff' is 1, and off if `onoff' is 0.	101	* if `onoff' is 1, and off if `onoff' is 0.
102	*/	102	*/
103	void place(const struct shape *shape, int pos, int onoff)	103	void place(const struct shape *shape, int pos, int onoff)
104	{	104	{
105	int *o = shape->off;	105	const int *o = shape->off;
106		106
107	board[pos] = onoff ? shape->color : 0x000000;	107	board[pos] = onoff ? shape->color : 0x000000;
108	board[pos + *o++] = onoff ? shape->color : 0x000000;	108	board[pos + *o++] = onoff ? shape->color : 0x000000;
109	board[pos + *o++] = onoff ? shape->color : 0x000000;	109	board[pos + *o++] = onoff ? shape->color : 0x000000;
110	board[pos + *o] = onoff ? shape->color : 0x000000;	110	board[pos + *o] = onoff ? shape->color : 0x000000;