80 lines
1.9 KiB
JavaScript
80 lines
1.9 KiB
JavaScript
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/**
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* Represents an action being performed on a game object
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*
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* Copyright (C) 2012 Mike Gerwitz
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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ltjs.MapAction = Class( 'MapAction',
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{
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// arranged by keycode
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'const D__MIN': 0,
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'const D_LEFT': 0,
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'const D_UP': 1,
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'const D_RIGHT': 2,
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'const D_DOWN': 3,
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'const D__MAX': 3,
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'private _dir': 0,
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'private _stateCallback': null,
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'private _moveCallback': null,
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__construct: function( state_callback, move_callback )
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{
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this._dir = this.__self.$( 'D_UP' );
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this._stateCallback = state_callback;
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this._moveCallback = move_callback;
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},
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'public changeState': function( newstate )
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{
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this._stateCallback( newstate );
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},
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'public move': function()
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{
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this._moveCallback( this._dir );
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},
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set direction( todir )
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{
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todir = +todir;
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// ensure valid direction was provided (use >= and <= check because
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// todir could be NaN, etc)
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if ( !( ( todir >= this.__self.$( 'D__MIN' ) )
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&& ( todir <= this.__self.$( 'D__MAX' ) )
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) )
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{
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throw Error( 'Invalid tank direction' );
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}
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this._dir = todir;
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},
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get direction()
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{
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return this._dir;
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},
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} );
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