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batype.js
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/*
* ____ _____
* | __ ) __ |_ _| _ _ __ ___
* | _ \ / _` || || | | | '_ \ / _ \
* | |_) | (_| || || |_| | |_) | __/
* |____/ \__,_||_| \__, | .__/ \___|
* |___/|_|
*
* BaType is a small game based on canvas that helps you to learn
* typing faster. It is more a proof of concept.
*
* Copyright (C) 2009 Florian Herlings (florianherlings.de)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Version: 0.1
* Date: 21.08.2009
*/
var Config = {
'fps': 60,
'bats_per_second': 1,
'width': function() { return document.getElementById("canvas").width; },
'height': function() { return document.getElementById("canvas").height; },
'text_field_height': function() { return (document.getElementById("canvas").height/8); },
'playingfield_height': function() { return (Config.height() - Config.text_field_height()); }
}
var Wordlist = [
"Mary",
"had",
"little",
"lamb",
"whose",
"fleece",
"was",
"white",
"as",
"snow",
"everywhere",
"that",
"went",
"and",
"the",
"sure",
"to",
"go"
]
var Key = {
'Backspace': 8,
'Enter': 13
}
var Textfield = {
'init': function(ctx) {
self.ctx = ctx;
self.text = '';
document.onkeydown = Textfield.key_up;
}, //init()
'draw': function() {
ctx.fillStyle = "rgb(9,21,45)";
ctx.fillRect (0, Config.playingfield_height(), Config.width(), Config.height());
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.font = "24px 'Arial'";
ctx.textBaseline = 'middle';
ctx.textAlign = 'center';
ctx.fillText(text+'_', Config.width()/2, Config.playingfield_height() + Config.text_field_height()/2 );
}, //draw()
'key_up': function(event) {
switch(event.keyCode) {
case Key.Enter:
BaType.check_word(text);
text = '';
event.cancelBubble = true;
event.returnValue = false;
break;
case Key.Backspace:
text = text.slice(0,-1);
event.cancelBubble = true;
event.returnValue = false;
break;
default:
text += String.fromCharCode(event.keyCode);
}//switch
return false;
}//key_up()
}//Textfield
var PlayingField = {
'init': function(ctx){
self.ctx = ctx;
self.bats = [];
self.bat_image = new Image();
self.bat_image.src="bat.png";
},//init()
'draw': function() {
PlayingField.draw_background();
if (self.bats.length >= 10) {
BaType.running = false;
}
//draw the bats
for(i=0; i < self.bats.length; i++)
PlayingField.draw_bat( self.bats[i] );
},//draw()
'draw_background': function() {
var objGradient = ctx.createRadialGradient(Config.width()/2, (Config.height()-Config.text_field_height()), 50, Config.width()/2, Config.playingfield_height(), Config.width()/2);
objGradient.addColorStop(0, '#1C2F5C');
objGradient.addColorStop(1, '#09152D');
ctx.fillStyle = objGradient;
ctx.fillRect(0, 0, Config.width(), (Config.height()-Config.text_field_height()));
},//draw_background()
'draw_bat': function(bat) {
//draw the bat image
ctx.drawImage(bat_image,bat.x, bat.y);
//draw the bat's text
ctx.font = "18px 'Arial'";
ctx.textAlign = 'center';
ctx.fillStyle = "rgba(0, 0, 0, 0.2)";
ctx.fillText(bat.caption, 1 + bat.x + bat_image.width/2, 1 + bat.y + bat_image.height);
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.fillText(bat.caption, bat.x + bat_image.width/2, bat.y + bat_image.height);
},//draw_bat()
'draw_fin': function() {
ctx.fillStyle = "rgba(0, 0, 0, 1)";
ctx.fillRect(0, 0, Config.width(), Config.height());
if (Scores.score > 2)
var fin_text = 'You got ' + Scores.score + ' bats.';
else if (Scores.score == 1)
var fin_text = 'You got 1 bat.';
else
var fin_text = 'You got no bats. Try again!';
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.font = "24px 'Arial'";
ctx.textBaseline = 'middle';
ctx.textAlign = 'center';
ctx.fillText(fin_text, Config.width()/2, Config.height()/2 );
},//draw_fin()
'add_bat': function(caption) {
bats.push({
'caption': caption.toUpperCase(),
'x': Math.random()* (Config.width() - bat_image.width),
'y': Math.random()* (Config.playingfield_height() - bat_image.height)
});
},//add_bat()
'remove_bat': function(caption) {
for(i=0; i < bats.length; i++)
if (bats[i].caption == caption) {
bats.splice(i,1);
Scores.add();
}
}//remove_bat()
}//PlayingField
var Scores = {
'init': function(ctx) {
self.ctx = ctx;
Scores.score = 0;
},//init()
'draw': function() {
if (Scores.score > 0) {
ctx.fillStyle = "rgb(255, 255, 255)";
ctx.font = "18px 'Arial'";
ctx.textBaseline = 'middle';
ctx.textAlign = 'right';
ctx.fillText(Scores.score + " Bats", Config.width()-30, 25 );
}//if
},//draw()
'add': function() {
Scores.score++;
}
}
var BaType = {
'init': function() {
self.canvas = document.getElementById("canvas");
BaType.ctx = canvas.getContext("2d");
BaType.running = true;
//maximize in window
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
Textfield.init(BaType.ctx);
PlayingField.init(BaType.ctx);
Scores.init(BaType.ctx);
setInterval( BaType.draw, 1000/Config.fps );
setInterval( BaType.add_bat, 1000/Config.bats_per_second );
},//init()
'check_word': function(word) {
PlayingField.remove_bat(word);
},//check_word()
'draw': function() {
//clear canvas
BaType.ctx.clearRect(0,0,canvas.width,canvas.height);
if (!BaType.running) {
PlayingField.draw_fin();
} else {
Textfield.draw();
PlayingField.draw();
Scores.draw();
}
},//draw()
'add_bat': function() {
var index = Math.floor( Math.random() * Wordlist.length );
PlayingField.add_bat( Wordlist[index] );
}//add_bat()
}//BaType