150 lines
7.3 KiB
JavaScript
150 lines
7.3 KiB
JavaScript
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LEVEL_HEIGHT = 9;
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LEVEL_WIDTH = 16;
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cell= {
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WALL: '#',
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BALL: '@',
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CUBE: 'H',
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VOID: ' ',
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GIFT: 'x',
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}
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direction = {
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UP: 'u',
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DOWN: 'd',
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LEFT: 'l',
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RIGHT: 'r',
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}
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options = {
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starting_level: 0,
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}
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state = {
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moving: cell.BALL,
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moves: 0,
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level: "",
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}
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levels = [ "#################@## x#H## x #### ##x ## ## x #### x x x ## x x## x ## ##x x#################",
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" # # # # # ### x @# #x #x x # # x x # # # x # # #H# x # # # # #xx## # # # # ",
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"################# x#@## ## ##H## #x x ## x x## x## #x x x# x### ##x #x x x####x ##x #################",
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"################# #H## # ###x#x x#x#x#x#x## # #x x# # # ####x#x#x x#x#x#x## # ## # #@ #################",
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" ############## #@ # # # ## #x # x x # ### # # ##x #x# #### # x # ##x# # # # #H## # x# #x# ############## ",
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" ############ # x #x x# # x # ## # x ##@ x ### x # ### x # ##H # x ##x #################",
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"################# # ## ### #x ##x# #x #x # # # # # # ### ## ## # #x# #x# # ## @#x H #x#################",
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"############### # x## ### #x ## x ## x## # #x ### ## #x# ### # x#x ##xHx# x #@# ### # ###############",
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" # ########### #x#x # @##x x# x # # # x## x# ## #x #xHx x## x## # #x#x # # # ############ ",
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" ########### #### x ## H ###x x# x## x #x #x # # # x # x##x#x # x# #@# #x ### ### # # # # ######### # #",
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"################# # @## #xx xx #### x ## x##x #x#xx ##### ## ## ##x x# x H x###x### # ## ## ########### ",
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"## ## #### #@#####x ### x### xx x ## ## ##x #x# ## # x ###x ## ## ## ## #H# ## x ## x #################",
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" ############## # @# x ### # #x x## ## x # ## x #x## # x ### x x #x##H # x # # # ############## ",
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"#################x#x x#x## x#@ ## ## H x ## x# ## x ## x# # ##x#x x#x#################",
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" ###### ####### # x# x ## # x # # x ## @# #xx #x # # # # x H# ##x # #x # # x # #x x# ############## ",
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"################## H#x x x##x @x#x #### ### x #### x#x# ##xx x#x ### x ####x ###x# # #################",
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"################# x# #@ ## # x#xx#x # ## #x##x# x ## x# x# ## x#x x# ## # # ##x# # ## x #x H #################",
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"################# x x H# ## #x#x #x ## #x# #x ## x # x#x ## #x# # x# ## x#x # x # ##x#@ # # #################",
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"#################x ## ##x## # # #x ## x# x## x ## # #x ## # x# ## ## x# ##x #H## x# #x ##@#################",
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"################# x#x ###x x# ##x ### # # x # # ## H # ## # @x## # # x # # ### x## #x x### x#x #################",
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"################# ### x ### # # ### ##x x ## x x x ### # ###x ## x x @ H x xx################# ",
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"#################x# #x# #x # ## # ##x # #x x ### #x x #### x # ###x ## #@#H x ################# ",
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" ############## # # #x# #x # ## x # ### # x #x ## #x # xx x ###x # ## x ## #@#H x # ############## ",
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"################# # ### ##x x ##x### #x x# #### xx x# ## ## #x x # ## ## ## @#H###xx################# ",
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"################# # ## x ##x x ## #x x ## ## x ## #x ## #x x# x ## ##x #@ H ################# " ];
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function count_gifts( state ) {
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n = 0
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for ( i = 0 ; i < LEVEL_HEIGHT * LEVEL_WIDTH ; i++ ) {
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if ( state.level.charAt( i ) == GIFTS ) {
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n++;
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}
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}
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return n;
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}
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function get_pos( state, actor ) {
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p = state.level.indexOf( actor, state.level );
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pos = {}
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pos[ 1 ] = Math.floor( p / LEVEL_WIDTH ); /* y */
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pos[ 0 ] = p - ( pos[ 1 ] * LEVEL_WIDTH ); /* x */
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return pos;
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}
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function get_cell( state, x, y ) {
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return( state.level.charAt( x + ( y * LEVEL_WIDTH ) ) );
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}
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function set_cell( state, x, y, value ) {
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p = x + ( y * LEVEL_WIDTH );
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state.level = state.level.substring( 0, p ) + value + state.level.substring( p+1, state.level.length );
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return state;
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}
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function won_or_not( state ) {
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return count_gifts( state ) == 0;
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}
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function format_level( state ) {
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dl = "";
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for ( i = 0 ; i < LEVEL_HEIGHT ; i++ ) {
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dl = dl + (state.level).substr( i*LEVEL_WIDTH, LEVEL_WIDTH ) + "\n";
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}
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return dl;
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}
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function load_level( levelset, nb ) {
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state.level = levelset[ nb ];
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state.moves = 0;
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state.moving = cell.BALL;
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return state;
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}
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function display_level( elt, state ) {
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$( elt ).html( format_level( state ) );
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}
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function make_a_move( state, where ) {
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motion = [ 0, 0 ];
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item_coord = get_pos( state, state.moving );
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/* Setup the motion vector according to direction.*/
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switch( where ) {
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case direction.UP:
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motion[ 1 ]--;
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break;
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case direction.DOWN:
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motion[ 1 ]++;
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break;
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case direction.LEFT:
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motion[ 0 ]--;
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break;
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case direction.RIGHT:
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motion[ 0 ]++;
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break;
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default: break;
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}
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/* Calculating arrival coordinates */
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while ( /* Hairy conditions ahead */
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/* target cell is within level's boundaries */
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( ( item_coord[ 0 ] + motion[ 0 ] >= 0 ) && ( item_coord[ 0 ] + motion[ 0 ] < LEVEL_WIDTH ) ) &&
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( ( item_coord[ 1 ] + motion[ 1 ] >= 0 ) && ( item_coord[ 1 ] + motion[ 1 ] < LEVEL_HEIGHT ) ) &&
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/* and target cell is empty */
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( get_cell( state, item_coord[ 0 ] + motion[ 0 ], item_coord[ 1 ] + motion[ 1 ] ) == cell.VOID )
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/* or, the ball will eat gifts so we can move it on one */
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|| ( state.moving == cell.BALL && ( get_cell( state, item_coord[ 0 ] + motion[ 0 ], item_coord[ 1 ] + motion[ 1 ] ) == cell.GIFT ) )
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)
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{
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state = set_cell( state, item_coord[ 0 ], item_coord[ 1 ], cell.VOID ); /* void the origin cell */
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item_coord[ 0 ] += motion[ 0 ]; /* move coordinate */
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item_coord[ 1 ] += motion[ 1 ]; /* to those of target cells */
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state = set_cell( state, item_coord[ 0 ], item_coord[ 1 ], state.moving ); /* move actor into target cell */
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/*
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We could update the display here, but in practice it all happen so fast
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that the move isn't noticeable. So it's commented.
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(maybe on a very slow machine it adds beauty?...)
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*/
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/* display_level( s ); */
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}
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state.moves++; /* increment moves' counter */
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return state;
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}
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