Miroirs/c-urs_-toil-s
1
0
Fork 0
mirror of https://github.com/gwenhael-le-moine/c-urs_-toil-s.git synced 2025-01-13 08:01:08 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

refined make_a_move to make the vector manipulation more visible

Browse source
This commit is contained in:
Gwenhael Le Moine 2011-07-04 09:49:42 +02:00
parent 630842effe
commit dfdd3c9883
1 changed files with 58 additions and 57 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

115
star.c
View file

@ -363,63 +363,6 @@ int won_or_not( struct state *s )
return( count_gifts( s ) == 0 );
}
/* Move the current actor towards direction in the current level,
eating gifts on the way if the moving actor is the ball
FIXME: more documentation
*/
void make_a_move( struct state *s, direction where )
{
int dx = 0, dy = 0, tmpx, tmpy, *item_coord;
item_coord = malloc( sizeof( int ) * 2 );
get_pos( s, item_coord, s->moving );
tmpx = item_coord[ 0 ];
tmpy = item_coord[ 1 ];
switch( where ) {
case UP:
dy--;
break;
case DOWN:
dy++;
break;
case LEFT:
dx--;
break;
case RIGHT:
dx++;
break;
default: break;
}
/* Calculating arrival coordinates */
while ( /* Hairy conditions ahead */
/* target cell is within level's boundaries */
( ( tmpx + dx >= 0 ) && ( tmpx + dx < LEVEL_WIDTH ) ) &&
( ( tmpy + dy >= 0 ) && ( tmpy + dy < LEVEL_HEIGHT ) ) &&
/* and target cell is empty */
( get_cell( s, tmpx + dx, tmpy + dy ) == VOID )
/* or, in case the ball is moving, target cell can be a gift (which we'll eat) */
|| ( s->moving == BALL && ( get_cell( s, tmpx + dx, tmpy + dy ) == GIFT ) )
)
{
tmpx += dx;
tmpy += dy;
if ( s->moving == BALL && get_cell( s, tmpx, tmpy ) == GIFT ) {
set_cell( s, tmpx, tmpy, VOID );
}
}
/* Moving to arrival coordinates */
set_cell( s, item_coord[ 0 ], item_coord[ 1 ], VOID );
set_cell( s, tmpx, tmpy, s->moving );
s->moves++;
free( item_coord );
}
/* display the current level (with Ncurses)
*/
void display_level( struct state *s )
@ -486,6 +429,64 @@ void display_level( struct state *s )
refresh();
}
/* Move the current actor towards direction in the current level,
eating gifts on the way if the moving actor is the ball
*/
void make_a_move( struct state *s, direction where )
{
int motion[ 2 ] = { 0, 0 };
int *item_coord;
item_coord = malloc( sizeof( int ) * 2 );
get_pos( s, item_coord, s->moving ); /* get the coordinates of the moving actor */
/* Setup the motion vector according to direction.*/
switch( where ) {
case UP:
motion[ 1 ]--;
break;
case DOWN:
motion[ 1 ]++;
break;
case LEFT:
motion[ 0 ]--;
break;
case RIGHT:
motion[ 0 ]++;
break;
default: break;
}
/* Calculating arrival coordinates */
while ( /* Hairy conditions ahead */
/* target cell is within level's boundaries */
( ( item_coord[ 0 ] + motion[ 0 ] >= 0 ) && ( item_coord[ 0 ] + motion[ 0 ] < LEVEL_WIDTH ) ) &&
( ( item_coord[ 1 ] + motion[ 1 ] >= 0 ) && ( item_coord[ 1 ] + motion[ 1 ] < LEVEL_HEIGHT ) ) &&
/* and target cell is empty */
( get_cell( s, item_coord[ 0 ] + motion[ 0 ], item_coord[ 1 ] + motion[ 1 ] ) == VOID )
/* or, the ball will eat gifts so we can move it on one */
|| ( s->moving == BALL && ( get_cell( s, item_coord[ 0 ] + motion[ 0 ], item_coord[ 1 ] + motion[ 1 ] ) == GIFT ) )
)
{
set_cell( s, item_coord[ 0 ], item_coord[ 1 ], VOID ); /* void the origin cell */
item_coord[ 0 ] += motion[ 0 ]; /* move coordinate */
item_coord[ 1 ] += motion[ 1 ]; /* to those of target cells */
set_cell( s, item_coord[ 0 ], item_coord[ 1 ], s->moving ); /* move actor into target cell */
/*
We could update the display here, but in practice it all happen so fast
that the move isn't noticeable. So it's commented.
(maybe on a very slow machine it adds beauty?...)
*/
/* display_level( s ); */
}
s->moves++; /* increment moves' counter */
free( item_coord ); /* we don't need item_coord anymore */
}
/* Parse the --arguments, if any, to populate options
*/
int parse_args( int argc, char* argv[], struct options *o, struct state *s )