30歳を過ぎて初めてプログラミングの仕事をし始めて、東証一部情報会社のCTOに登りつめた、ユゲタです。
youtubeで「エンジニア 無理ゲー」と検索すると、30歳からプログラミングを始めるのは、無駄。という内容が山のように出てきます。
そして、こうした動画を公開している人は、全て20台の人でしたねwww。
30歳を過ぎて、企業に務めていると、こうしたしがらみも感じるようになるんですね。お〜こわ！
確かにプログラミングを簡単に習得できないのはよくわかりますが、僕の知り合いのCTO仲間は、みんな40オーバー。
確かにマネジメントもたくさんやっていますが、ほとんどが現役プログラマーで、趣味でもプログラミングをやっている人ばかりですね。
これからプログラミングを始めたいと考えている中高年の人は、あまりこうした情報に惑わされないほうがいいかもしれませんね。
本日のIT謎掛け
「エンジニア35歳定年説」と、かけまして・・・
「高血圧の人の食事」と、ときます。
そのココロは・・・
ソースを、あまりかけなくなります。
ソースコード
(function(w,d){
var __options = {
canvas_size : { x : null , y : null },
bitmap_size : { w : 48 , h : 48},
cannon : {
color : "#57F2D6",
bitSize : 4,
src : "images/dot/cannon.dot",
x : 0 , y : 0,
moveX : 10
},
ufo : {
color : "white",
src : "images/dot/ufo.dot",
x : 0 , y : 0,
moveX : 10
},
bullet : {
color : "white",
src : "images/dot/bullet.dot",
x : 0 , y : 0,
moveX : 10
},
invader_effect_1 : {
color : "white",
src : "images/dot/invader_effect_1.dot",
x : 0 , y : 0,
},
tochika : {
color : "red",
src : "images/dot/tochika.dot",
w : 72
},
invader_src : {
"crab" : [
'images/dot/crab_1.dot',
"images/dot/crab_2.dot"
],
"octpus" : [
"images/dot/octpus_1.dot",
"images/dot/octpus_2.dot"
],
"squid" : [
"images/dot/squid_1.dot",
"images/dot/squid_2.dot"
]
},
invader_row_infos : [
{ invader : "squid" , color : "#68F205"},
{ invader : "crab" , color : "#68F205"},
{ invader : "crab" , color : "#57F2D6"},
{ invader : "octpus", color : "#57F2D6"},
{ invader : "octpus", color : "#F22786"}
],
invader_config : {
type : "invader",
margin : 10, // display-margin
move_x : 4, // [1:right , -1:left]
move_y : 4
}
};
var MAIN = function(canvas_selector){
this.canvas_selector = canvas_selector || "canvas";
this.shoots = [];
this.pattern = 0;
this.setCanvas(this.canvas_selector);
this.set_imageMax();
this.event_set();
this.bitmap_load();
this.view();
this.animation_roop();
};
MAIN.prototype.setCanvas = function(selector){
this.canvas_elm = d.querySelector(selector);
if(!this.canvas_elm){return;}
this.canvas_elm.style.setProperty("background-color","black","");
if(w.innerWidth < this.canvas_elm.offsetWidth){
this.canvas_elm.setAttribute("width" , w.innerWidth);
}
if(w.innerHeight < this.canvas_elm.offsetHeight){
this.canvas_elm.setAttribute("height" , w.innerHeight);
}
__options.canvas_size.x = this.canvas_elm.offsetWidth;
__options.canvas_size.y = this.canvas_elm.offsetHeight;
__options.cannon.y = __options.canvas_size.y - 100;
// smooth-off
this.ctx = this.canvas_elm.getContext("2d");
this.ctx.imageSmoothingEnabled = false;
this.ctx.mozImageSmoothingEnabled = false;
this.ctx.webkitImageSmoothingEnabled = false;
this.ctx.msImageSmoothingEnabled = false;
};
MAIN.prototype.clear = function(){
this.ctx.clearRect(0, 0, this.canvas_elm.width, this.canvas_elm.height);
};
MAIN.prototype.bitmap_load = function(){
var bitmap_files = [];
for(var i in __options.invader_src){
for(var j=0; j<__options.invader_src[i].length; j++){
bitmap_files.push(__options.invader_src[i][j]);
}
}
for(var i=0; i<bitmap_files.length; i++){
this.image_bit_set(bitmap_files[i]);
}
this.image_bit_set(__options.cannon.src);
this.image_bit_set(__options.ufo.src);
this.image_bit_set(__options.bullet.src);
this.image_bit_set(__options.invader_effect_1.src);
this.image_bit_set(__options.tochika.src , __options.tochika.w);
};
MAIN.prototype.view = function(){
// invader
this.view_invader();
// canon
this.image(__options.cannon);
// tochika
this.view_tochika();
}
MAIN.prototype.view_invader = function(){
if(typeof __options.invaders === "undefined"){
this.init_invaders_info();
}
for(var i in __options.invaders){
for(var j in __options.invaders[i]){
if(typeof __options.invaders[i][j][0].shoot_flg !== "undefined"){
if(__options.invaders[i][j][0].shoot_flg <= 2){
__options.invaders[i][j][0].shoot_flg++;
}
else{
__options.invaders[i].splice(j,1);
continue;
}
}
this.image(__options.invaders[i][j][this.pattern]);
}
}
};
MAIN.prototype.view_tochika = function(){
// 配置間隔
var rate = 2.5;
// 配置計算
var tochika_count = Math.floor(this.canvas_elm.offsetWidth / (__options.tochika.w * rate));
var margin = (this.canvas_elm.offsetWidth - ((__options.tochika.w * rate) * tochika_count)) / 2;
var centering = __options.tochika.w * (rate - 1) /2;
var y = this.canvas_elm.offsetHeight - 170;
for(var i=0; i<tochika_count; i++){
var x = margin + ((__options.tochika.w * rate) * i) + centering;
var option = JSON.parse(JSON.stringify(__options.tochika));
option.x = x;
option.y = y;
this.image(option);
}
};
MAIN.prototype.init_invaders_info = function(){
// 配置マージン
margin = __options.invader_config.margin;
// 配置個数（w）
var count_w = Math.floor((__options.canvas_size.x - margin * 2) / __options.bitmap_size.w) -2;
// 敵機配置情報作成
__options.invaders = [];
for(var i=0; i<__options.invader_row_infos.length; i++){
var type = __options.invader_row_infos[i].invader;
__options.invaders[i] = [];
var srcs = __options.invader_src[type];
for(var j=0; j<count_w; j++){
__options.invaders[i][j] = [];
for(var k=0; k<srcs.length; k++){
__options.invaders[i][j][k] = {
color : __options.invader_row_infos[i].color,
x : (j * __options.bitmap_size.w) + margin,
y : (i * __options.bitmap_size.h) + margin,
type : type,
src : srcs[k]
};
}
}
}
};
MAIN.prototype.image_cache = [];
MAIN.prototype.image = function(options){
if(!this.canvas_elm){return;}
if(!options){return;}
if(typeof this.image_cache[options.src] !== "undefined"){
this.image_bit_make(options);
}
};
MAIN.prototype.image_bit_set = function(src , bitmap_size){
if(typeof this.image_cache[src] !== "undefined"){return;}
bitmap_size = bitmap_size || __options.bitmap_size.w;
this.image_cache[src] = {
bitsize : 0,
bitmap : []
};
new AJAX({
url : src,
methdo : "GET",
async : true,
onSuccess : (function(src , bitmap_size , data){
this.image_bit_loaded(src , bitmap_size , data);
}).bind(this , src , bitmap_size)
});
};
MAIN.prototype.image_bit_loaded = function(src , bitmap_size , data){
var char16 = data.split("\n");
var str_count = char16[0].length * 4;
var size = bitmap_size / str_count;
// ゼロパディング用桁数算出
var zero = new Array(str_count).fill("0").join("")
for(var i in char16){
// 16進数を２進数に変換
var char2 = parseInt(char16[i] , 16).toString(2);
// サイズ取得
this.image_cache[src].bitsize = size;
char2 = (zero + char2).slice(-str_count);
this.image_cache[src].bitmap.push(char2);
}
};
MAIN.prototype.image_bit_make = function(options){
if(typeof this.image_cache[options.src] === "undefined"
|| typeof this.image_cache[options.src].bitmap === "undefined"
|| typeof this.image_cache[options.src].bitsize === "undefined"){return;}
var bitmap = this.image_cache[options.src].bitmap;
var bitsize = this.image_cache[options.src].bitsize;
this.ctx.fillStyle = options.color;
for(var i=0; i<bitmap.length; i++){
for(var j=0; j<bitmap[i].length; j++){
var bit = bitmap[i].charAt(j);
if(bit == 0){continue;}
var w = bitsize;
var h = bitsize;
var x = options.x + (j * w);
var y = options.y + (i * h);
this.ctx.fillRect(x , y , Math.ceil(w) , Math.ceil(h));
}
}
};
MAIN.prototype.animation_roop = function(time){
var func = (function(e){this.animation(e)}).bind(this);
this.animation_proc();
if(window.requestAnimationFrame
|| window.webkitRequestAnimationFrame
|| window.mozRequestAnimationFrame
|| window.oRequestAnimationFrame
|| window.msRequestAnimationFrame){
window.requestAnimationFrame(func);
}
else{
time = time || 10;
anim_flg = setTimeout(func , time);
}
};
MAIN.prototype.animation_proc = function(){
switch(this.keydown_flg){
case "right":
this.cannon_move(__options.cannon.x + __options.cannon.moveX);
break;
case "left":
this.cannon_move(__options.cannon.x - __options.cannon.moveX);
break;
}
this.animation_shoot();
};
MAIN.prototype.animation_shoot = function(){
if(!this.shoots.length){return;}
for(var i in this.shoots){
var w = 1 * __options.cannon.bitSize;
var h = 2 * __options.cannon.bitSize;
// collision
if(this.shoot_collision(this.shoots[i].x , this.shoots[i].y , w , h)){
this.shoots.splice(i,1);
}
else if(this.shoots[i].y < h){
this.shoots.splice(i,1);
}
else{
this.ctx.fillStyle = "white";
this.ctx.fillRect(this.shoots[i].x - __options.cannon.bitSize , this.shoots[i].y , w , h);
this.shoots[i].y -= __options.cannon.bitSize * 2;
}
}
};
MAIN.prototype.shoot_collision = function(x , y , w , h){
var inv = __options.invaders;
for(var i in inv){
for(var j in inv[i]){
var ix = inv[i][j][0].x;
var iy = inv[i][j][0].y;
var iw = __options.bitmap_size.w;
var ih = __options.bitmap_size.h;
if(ix <= x && x <= ix + iw
&& iy <= y - h && y <= iy + ih){
for(var k=0; k<inv[i][j].length; k++){
inv[i][j][k].src = __options.invader_effect_1.src;
inv[i][j][k].shoot_flg = 1;
}
return true;
}
}
}
};
MAIN.prototype.cannon_move = function(pos){
if(pos < 0){
pos = 0;
}
else if(pos > this.canvas_elm.offsetWidth - __options.bitmap_size.w){
pos = this.canvas_elm.offsetWidth - __options.bitmap_size.w;
}
__options.cannon.x = pos;
};
MAIN.prototype.animation = function(){
this.clear();
this.nextPattern(300);
this.view();
this.animation_roop(30);
}
MAIN.prototype.nextPattern = function(frame_rate){
this.prev_time = this.prev_time || 0;
if((+new Date()) - this.prev_time < frame_rate){return}
this.prev_time = (+new Date());
this.pattern++;
if(this.pattern >= this.image_max){
this.pattern = 0;
}
this.invader_move();
};
MAIN.prototype.invader_move = function(){
// 左端の情報取得
var window_min = __options.invader_config.margin;
var window_max = this.canvas_elm.offsetWidth - __options.invader_config.margin;
var pos = this.invader_pos();
var move_x = __options.invader_config.move_x;
var move_y = 0;
var w = __options.bitmap_size.w;
// move y
if(typeof this.move_y_count !== "undefined" && this.move_y_count > 0){
this.move_y_count -= 1;
move_y = __options.invader_config.move_y;
move_x = 0;
}
// Dead end ->
else if(move_x > 0 && pos.max > window_max){
// move_x = window_max - pos.max;
this.move_y_count = 1;
__options.invader_config.move_x = -__options.invader_config.move_x;
move_x = 0;
move_y = __options.invader_config.move_y;
}
// <- Dead end
else if(move_x < 0 && pos.min < window_min){
// move_x = window_min - pos.min;
this.move_y_count = 1;
__options.invader_config.move_x = -__options.invader_config.move_x;
move_x = 0;
move_y = __options.invader_config.move_y;
}
this.invader_move_set(move_x , move_y);
};
// mode @ [min : 一番左端のinvaderの座標を取得 . max : 一番右端のinvaderの座標を取得]
MAIN.prototype.invader_pos = function(mode){
var min = null;
var max = null;
var inv = __options.invaders;
var w = __options.bitmap_size.w;
for(var i in inv){
for(var j in inv[i]){
if(min === null || min > inv[i][j][0].x){
min = inv[i][j][0].x;
}
if(max === null || max < inv[i][j][0].x + w){
max = inv[i][j][0].x + w;
}
}
}
if(mode === "min"){
return min;
}
else if(mode === "max"){
return max;
}
else{
return {min : min , max : max};
}
};
MAIN.prototype.invader_move_set = function(x,y){
var inv = __options.invaders;
var w = __options.bitmap_size.w;
for(var i in inv){
for(var j in inv[i]){
for(var k in inv[i][j]){
inv[i][j][k].x += x;
inv[i][j][k].y += y;
}
}
}
};
MAIN.prototype.set_imageMax = function(){
for(var i in __options.invader_src){
this.image_max = __options.invader_src[i].length;
break;
}
};
/* Event */
MAIN.prototype.event_set = function(){
new LIB().event(w , "click" , (function(e){this.click(e)}).bind(this));
new LIB().event(w , "keydown" , (function(e){this.keydown(e)}).bind(this));
new LIB().event(w , "keyup" , (function(e){this.keyup(e)}).bind(this));
new LIB().event(w , "mousemove" , (function(e){this.mousemove(e)}).bind(this));
new LIB().event(w , "touchmove" , (function(e){this.touchmove(e)}).bind(this));
new LIB().event(w , "touchend" , (function(e){this.touchend(e)}).bind(this));
};
MAIN.prototype.click = function(e){
this.shoot_add();
};
MAIN.prototype.shoot_add = function(){
if(this.shoots.length < 2){
this.shoots.push({
x : __options.cannon.x + (__options.bitmap_size.w / 2),
y : __options.cannon.y + (__options.cannon.bitSize * 4)
});
}
};
MAIN.prototype.keydown = function(e){
switch(e.keyCode){
case 37: // <-
case 'ArrowLeft':
this.keydown_flg = "left";
break;
case 39: // ->
case 'ArrowRight':
this.keydown_flg = "right";
break;
case 32: // space
this.shoot_add();
break;
}
};
MAIN.prototype.keyup = function(e){
this.keydown_flg = false;
};
MAIN.prototype.mousemove = function(e){
// if(this.flg_gamestart !== true){return;}
this.mousePos = this.mousePos || e.clientX;
this.cannon_move(__options.cannon.x + (e.clientX - this.mousePos));
this.mousePos = e.clientX;
};
MAIN.prototype.touchmove = function(e){
// if(this.flg_gamestart !== true){return;}
if(!e || !e.touches || e.touches.length > 1){
this.mousePos = null;
return;
}
this.mousePos = typeof this.mousePos === "number" ? this.mousePos : e.touches[0].clientX;
this.cannon_move(__options.cannon.x + (e.touches[0].clientX - this.mousePos));
this.mousePos = e.touches[0].clientX;
};
MAIN.prototype.touchend = function(e){
this.mousePos = null;
};
var LIB = function(){};
LIB.prototype.event = function(target, mode, func , flg){
flg = (flg) ? flg : false;
if (target.addEventListener){target.addEventListener(mode, func, flg)}
else{target.attachEvent('on' + mode, function(){func.call(target , window.event)})}
};
var AJAX = function(option){
if(!option){return}
var httpoj = this.createHttpRequest();
if(!httpoj){return;}
// var option = new MAIN().setOption(options);
var data = this.setQuery(option);
if(!data.length){
option.method = "get";
}
httpoj.open( option.method , option.url , option.async );
httpoj.setRequestHeader('Content-Type', option.type);
httpoj.onreadystatechange = function(){
if (this.readyState==4 && httpoj.status == 200){
option.onSuccess(this.responseText);
}
};
// FormData 送信用
if(typeof option.form === "object" && Object.keys(option.form).length){
httpoj.send(option.form);
}
// query整形後 送信
else{
if(data.length){
httpoj.send(data.join("&"));
}
else{
httpoj.send();
}
}
};
AJAX.prototype.dataOption = {
url:"",
query:{},
querys:[],
data:{},
form:{},
async:"true",
method:"POST",
type:"application/x-www-form-urlencoded",
onSuccess:function(res){},
onError:function(res){}
};
AJAX.prototype.createHttpRequest = function(){
//Win ie用
if(window.ActiveXObject){
//MSXML2以降用;
try{return new ActiveXObject("Msxml2.XMLHTTP")}
catch(e){
//旧MSXML用;
try{return new ActiveXObject("Microsoft.XMLHTTP")}
catch(e2){return null}
}
}
//Win ie以外のXMLHttpRequestオブジェクト実装ブラウザ用;
else if(window.XMLHttpRequest){return new XMLHttpRequest()}
else{return null}
};
// URL-Queryの作成
AJAX.prototype.setQuery = function(option){
var data = [];
if(typeof option.datas !== "undefined"){
for(var key of option.datas.keys()){
data.push(key + "=" + option.datas.get(key));
}
}
if(typeof option.query !== "undefined"){
for(var i in option.query){
data.push(i+"="+encodeURIComponent(option.query[i]));
}
}
if(typeof option.querys !== "undefined"){
for(var i=0;i<option.querys.length;i++){
if(typeof option.querys[i] == "Array"){
data.push(option.querys[i][0]+"="+encodeURIComponent(option.querys[i][1]));
}
else{
var sp = option.querys[i].split("=");
data.push(sp[0]+"="+encodeURIComponent(sp[1]));
}
}
}
return data;
}
new LIB().event(w , "load" , function(){new MAIN("#mycanvas")});
})(window,document);
解説
今回は、敵キャラをやっつけるモードを追加しました。
撃った弾が敵機キャラに当たったら、当たり判定（コリジョン）をしてから、エフェクトをかましつつ、画面から削除するという処理です。
もはや一気にインベーダーゲーム、バッチリですね。
※まだまだ完成ではありませんが・・・
処理としては、弾のアニメーション座標に、敵キャラが被っていたら、画像をエフェクト画像に切り替えた後に、対象の敵キャラを消す処理を追加しました。
エフェクト画像が必要だったので、ドット絵の追加も行っています。
今回はエフェクトパターンは、1パターンだけにしたんですが、２パターンぐらいあっても、いい効果が期待できそうですね。
次回は、トーチカに当たり判定をつけて、弾が当たったら、崩れていくような効果を付けてみたいと思います。
Github
ソースは以下にアップしています。(ver:0.8)
https://github.com/yugeta/game_invader
