仕事中に、AmazonPrimeVideoを垂れ流して見ていると、アメリカドラマの進行がすこぶる調子がいいと感じる、ユゲタです。
レンタルビデオで、ちまちま借りていたドラマ系のビデオを思い出すと、ネット系で見られるメリットは、計り知れませんね。
そう言えば、しばらく近所のレンタルビデオには行ってないし、借りてもいないんだけど、まさか店舗が潰れているなんてことはないだろうな・・・
そんなレンタルビデオは、デブレーションの影響を受けやすく、1本100円のレンタルが当たり前になっていたため、倒産するレンタルビデオ屋も少なくないという事は数年前から聞いていたが、中古ゲーム販売や、中古漫画などのレンタルをやっている系列店舗などは、比較的ビデオ屋といいつつ、売上比率は、ゲームが主力商品になっている可能性も高いですね。
ゲームはいつの時代も強いですね。
本日のIT謎掛け
「レンタルビデオ」と、かけまして・・・
「配送手段の乏しい離島への宅配便」と、ときます。
そのココロは・・・
おくれる（遅れる、送れる）と高くつきます。
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
},
cannon_shoot : {
w : 1,
h : 3
},
ufo : {
color : "white",
src : "images/dot/ufo.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,
rate : 2.5
},
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
},
bullet : {
color : "white",
x : 0 , y : 0,
moveY : 4
},
bullet_anim : [
"images/dot/bullet_1.dot",
"images/dot/bullet_2.dot"
],
del_block : [
"01110",
"01010",
"00100"
]
};
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]);
}
for(var i=0; i<__options.bullet_anim.length; i++){
this.image_bit_set(__options.bullet_anim[i]);
}
this.image_bit_set(__options.cannon.src);
this.image_bit_set(__options.ufo.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(){
if(typeof this.image_cache[__options.tochika.src] === "undefined"
|| typeof this.image_cache[__options.tochika.src].bitmap === "undefined"
|| !this.image_cache[__options.tochika.src].bitmap.length){return;}
if(typeof __options.tochikas === "undefined"){
this.init_tochilas_info();
}
// 配置間隔
var rate = __options.tochika.rate;
// 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 in __options.tochikas){
__options.tochikas[i].x = margin + ((__options.tochika.w * rate) * i) + centering;
__options.tochikas[i].y = y;
__options.tochikas[i].bitsize = __options.tochikas[i].bitsize || this.image_cache[__options.tochika.src].bitsize;
__options.tochikas[i].h = __options.tochikas[i].bitsize * __options.tochikas[i].bitmap.length;
this.image(__options.tochikas[i]);
}
};
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.init_tochilas_info = function(){
__options.tochikas = [];
var rate = __options.tochika.rate;
var tochika_count = Math.floor(this.canvas_elm.offsetWidth / (__options.tochika.w * rate));
var bitmap = this.image_cache[__options.tochika.src].bitmap;
for(var i=0; i<tochika_count; i++){
__options.tochikas.push({
src : __options.tochika.src,
color : __options.tochika.color,
bitmap : JSON.parse(JSON.stringify(bitmap))
});
}
};
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"){return}
var bitmap = this.get_bitmap(options);
var bitsize = this.get_bitsize(options);
this.image_bit_make(bitmap , bitsize , options.color , options.x , options.y);
};
MAIN.prototype.get_bitmap = function(option){
if(typeof option.bitmap !== "undefined"){
return option.bitmap;
}
else if(typeof this.image_cache[option.src] !== "undefined"
&& typeof this.image_cache[option.src].bitmap !== "undefined"){
return this.image_cache[option.src].bitmap;
}
};
MAIN.prototype.get_bitsize = function(option){
if(typeof this.image_cache[option.src] !== "undefined"
|| typeof this.image_cache[option.src].bitsize !== "undefined"){
return this.image_cache[option.src].bitsize;
}
};
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);
}
// 上下左右の余白（マージン）値の取得
this.set_bitmap_margin(src , size);
};
// 上下左右の余白（マージン）値の取得
MAIN.prototype.set_bitmap_margin = function(src , bitsize){
if(typeof this.image_cache[src] === "undefined"){return;}
var cache = this.image_cache[src];
if(typeof cache.bitmap === "undefined"){return;}
var bitmap = cache.bitmap;
cache.margin = {
top : 0,
bottom : 0,
left : 0,
right : 0
};
for(var i=0; i<bitmap.length; i++){
if(bitmap[i].indexOf("1") !== -1){
// cache.margin.top = i;
cache.margin.top = i * bitsize;
break;
}
}
for(var i=bitmap.length-1; i>=0; i--){
if(bitmap[i].indexOf("1") !== -1){
// cache.margin.bottom = bitmap.length-1 - i;
cache.margin.bottom = (bitmap.length-1 - i) * bitsize;
break;
}
}
var bitmap2 = new LIB().bin_convert_col2row(bitmap);
for(var i=0; i<bitmap2.length; i++){
if(bitmap2[i].indexOf("1") !== -1){
// cache.margin.right = i;
cache.margin.right = i * bitsize;
break;
}
}
for(var i=bitmap2.length-1; i>=0; i--){
if(bitmap2[i].indexOf("1") !== -1){
// cache.margin.left = bitmap2.length-1 - i;
cache.margin.left = (bitmap2.length-1 - i) * bitsize;
break;
}
}
};
MAIN.prototype.image_bit_make = function(bitmap , bitsize , color , x , y){
if(!bitmap){return;}
color = color || "white";
this.ctx.fillStyle = 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;
this.ctx.fillRect(x+(j * w) , y+(i * h) , 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;}
var bitsize = this.image_cache[__options.cannon.src].bitsize;
var w = bitsize * __options.cannon_shoot.w;
var h = bitsize * __options.cannon_shoot.h;
var target = null;
for(var i in this.shoots){
// collision tochika
if(target = this.collision_tochika(this.shoots[i].x , this.shoots[i].y , w , h)){
var flg = this.tochika_scrape_shoot(target , this.shoots[i].x , this.shoots[i].y);
if(flg){
this.shoots.splice(i,1);
continue;
}
}
// collosion invader
else if(this.shoot_collision_invader(this.shoots[i].x , this.shoots[i].y , w , h)){
this.shoots.splice(i,1);
continue;
}
// 画面外
else if(this.shoots[i].y < h){
this.shoots.splice(i,1);
continue;
}
// 通常表示
this.ctx.fillStyle = "white";
this.ctx.fillRect(this.shoots[i].x - bitsize , this.shoots[i].y , w , h);
this.shoots[i].y -= bitsize * 2;
}
};
MAIN.prototype.animation_bullet = function(){
if(typeof this.bullets === "undefined" || !this.bullets.length){return;}
var current_time = (+new Date());
// アニメーションパターンのフレーム感覚
if(typeof this.bullet_anim_time === "undefined"){
this.bullet_anim_time = current_time;
}
// アニメーションパターンの切り替え
if(typeof this.bullet_anim_num === "undefined"){
this.bullet_anim_num = 0;
}
else if(current_time - this.bullet_anim_time > 50){
this.bullet_anim_time = current_time;
this.bullet_anim_num++;
if(this.bullet_anim_num >= __options.bullet_anim.length){
this.bullet_anim_num = 0;
}
}
var cache = this.image_cache[__options.bullet_anim[this.bullet_anim_num]];
if(!cache){return;}
var bitsize = cache.bitsize;
for(var i in this.bullets){
this.bullets[i].y += bitsize;
var y = this.bullets[i].y;
var target = null;
// 画面外に出たbulletは削除する
if(y > this.canvas_elm.offsetHeight){
this.bullets[i] = null;
continue;
}
// tochika collision
else if(target = this.collision_tochika(
this.bullets[i].x ,
this.bullets[i].y ,
__options.bitmap_size.w ,
__options.bitmap_size.h ,
cache.margin )){
var flg = this.tochika_scrape_bullet(target , this.bullets[i].x + (__options.bitmap_size.h/2) , this.bullets[i].y + __options.bitmap_size.h);
if(flg === true){
this.bullets[i] = null;
continue;
}
}
// 通常表示処理
var option = {
x : this.bullets[i].x,
y : y = y,
src : __options.bullet_anim[this.bullet_anim_num],
color : __options.bullet.color
};
this.image(option);
}
var newArr = [];
for(var i in this.bullets){
if(!this.bullets[i]){continue;}
newArr.push(this.bullets[i]);
}
this.bullets = newArr;
};
MAIN.prototype.shoot_collision_invader = 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 + w && 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.collision_tochika = function(x , y , w , h , margin){
for(var i in __options.tochikas){
var tx = __options.tochikas[i].x;
var ty = __options.tochikas[i].y;
var tw = __options.tochika.w;
var th = __options.tochikas[i].h;
var margin_top = margin ? margin.top : 0;
var margin_bottom = margin ? margin.bottom : 0;
var margin_left = margin ? margin.left : 0;
var margin_right = margin ? margin.right : 0;
if(tx + margin_left < x + w && x <= tx + tw - margin_right
&& ty < y + h - margin_bottom && y < ty + th - margin_bottom){
return __options.tochikas[i];
}
}
return false;
};
MAIN.prototype.tochika_scrape_shoot = function(tochika_data , shoot_x , shoot_y){
// 衝突したtochikaの下部分を検出
var x = shoot_x - tochika_data.x;
var y = shoot_y - tochika_data.y;
var dot_x = Math.round(x / tochika_data.bitsize);
var dot_y = Math.round(y / tochika_data.bitsize);
dot_x -= 1; // ドット絵のズレ対応
if(typeof tochika_data.bitmap[dot_y] === "undefined"){
dot_y = dot_y < 0 ? 0 : tochika_data.bitmap.length-1;
}
if(typeof tochika_data.bitmap[dot_y][dot_x] === "undefined"){
dot_x = dot_x < 0 ? 0 : tochika_data.bitmap[dot_y].length -1;
}
var del_block = "0";
// 当たった座標のドット部分を選択 衝突箇所以下を削除
for(var i=tochika_data.bitmap.length-1; i>=0; i--){
if(tochika_data.bitmap[i][dot_x] != 1){continue;}
// 座標判定
if(shoot_y >= tochika_data.y + ((i-1) * tochika_data.bitsize)){
return false;
}
var str = tochika_data.bitmap[i];
tochika_data.bitmap[i] = str.slice(0 , dot_x).concat(del_block , str.slice(dot_x + del_block.length));
return true;
}
return false;
};
MAIN.prototype.tochika_scrape_bullet = function(tochika_data , bullet_x , bullet_y){
// 衝突したtochikaの下部分を検出
var x = bullet_x - tochika_data.x;
var y = bullet_y - tochika_data.y;
var dot_x = Math.round(x / tochika_data.bitsize);
var dot_y = Math.round(y / tochika_data.bitsize);
if(typeof tochika_data.bitmap[dot_y] === "undefined"){
dot_y = dot_y < 0 ? 0 : tochika_data.bitmap.length -1;
}
if(typeof tochika_data.bitmap[dot_y][dot_x] === "undefined"){
dot_x = dot_x < 0 ? 0 : tochika_data.bitmap[dot_y].length -1;
}
// 当たった座標のドット部分を選択 衝突箇所以下を削除
for(var i=0; i<tochika_data.bitmap.length; i++){
if(tochika_data.bitmap[i][dot_x] != 1){continue;}
var zero = Array(tochika_data.bitmap[i].length + 1).join("0");
for(var j=0; j<__options.del_block.length; j++){
num = i + j;
if(typeof tochika_data.bitmap[num] === "undefined" || !tochika_data.bitmap[num]){break;}
var str = tochika_data.bitmap[num];
var shift = str.length - dot_x - __options.del_block[j].length + Math.ceil(__options.del_block[j].length/2);
shift = shift > 0 ? shift : 0;
var delbit = (String("0b"+ __options.del_block[j]) << shift).toString(2);
newbit = ((String("0b"+str)) & ~String("0b"+delbit)).toString(2);
newbit = (zero + String(newbit)).slice(-str.length);
tochika_data.bitmap[num] = newbit;
}
return true;
}
return false;
};
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);
this.invader_bullet();
}
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){
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){
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;
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;
}
}
}
};
// 各列の一番下のインベーダーがミサイルを発射する（最大同時数:2）
MAIN.prototype.invader_bullet = function(){
if(typeof this.bullets === "undefined"){
this.bullets = [];
}
this.invader_bullet_add();
this.animation_bullet();
};
MAIN.prototype.invader_bullet_add = function(){
if(this.bullets.length >= __options.bullet_anim.length){return;}
if(Math.floor(Math.random() * Math.floor(100)) > 10){return;}
var bottoms = this.get_invader_bottoms();
var keys = Object.keys(bottoms);
if(!bottoms || !keys.length){return;}
var rnd_num = Math.floor(Math.random() * Math.floor(keys.length));
var data = {
x : bottoms[keys[rnd_num]].x,
y : bottoms[keys[rnd_num]].y + __options.bitmap_size.h
};
this.bullets.push(data);
};
// 各列の最下部インベーダー一覧の取得
MAIN.prototype.get_invader_bottoms = function(){
var inv = __options.invaders;
var bottoms = {};
for(var i=inv.length-1; i>=0; i--){
for(var j in inv[i]){
if(!inv[i][j]){continue;}
var x = inv[i][j][0].x;
if(typeof bottoms[x] !== "undefined"){continue;}
bottoms[x] = inv[i][j][0];
}
}
return bottoms;
};
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)})}
};
LIB.prototype.bin_convert_col2row = function(bitmap){
var newmap = [];
for(var i in bitmap){
for(var j=0; j<bitmap[i].length; j++){
if(typeof newmap[j] === "undefined"){newmap[j] = "";}
newmap[j] += bitmap[i][j];
}
}
return newmap;
};
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、インベーダーの攻撃用のミサイルがトーチカに当たったときのコリジョン処理を付けてみました。
youtubeにアップされている、スペースインベーダーのビデオを参考に、してみましたが、トーチカの崩し方は、ブロック範囲を大きめに破壊しているようでした。
とりあえず、汎用性も考えて、自機の攻撃では、1ドット崩すのみですが、敵機のミサイルが当たった時は、3x3のブロックで、乱雑的に崩すようにしてみたので、トーチカが崩れ去るスピードは、本家よりも遅くしてあります。
技術的には、ビット演算を使って、指定のドットを除外する方法にしているので、崩すブロックの形は、後で変更することも可能な状態にしています。
さらに、敵機のミサイルは、正方形のドット絵で書かれていますが、実際の見た目は縦長なので、ドット全体の当たり判定をすると、ギリギリ触っていない状態でも、当たっていることになり、少し納得がいかない感じになるので、上下左右の空白部分をマージンとして保持して、それを反映する仕様もいれてみました。
なので、トーチカをギリギリにすり抜けていくミサイルを見ることもできますよ。
そして、ついに次回で、自機当たり判定を入れるので、自機が死にます・・・
Github
ソースは以下にアップしています。(ver:0.11)
https://github.com/yugeta/game_invader
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