コード例
enchant.jsのsample1の移植
http://enchantjs.com/ja/sample.html
package ;
import js.Lib;
import EnchantHX;
class Bear extends HxSprite {
public function new() {
super(32, 32);
x = 8;
y = 8;
image = Main.game.assets.get('chara1.gif');
addEventListener(event_ENTER_FRAME, function(e) {
// check input (from key or pad) on every frame
if (Main.game.input.right) {
x += 2;
}
if (Main.game.input.left) {
x -= 2;
}
if (Main.game.input.up) {
y -= 2;
}
if (Main.game.input.) {
y += 2;
}
});
}
}
class Main extends HxGame {
public static var game : HxGame;
function new() {
super(320, 320);
fps = 24;
preload(['chara1.gif']);
// The images used in the game should be preloaded
onload = function() {
var bear = new Bear();
// add bear to rootScene (default scene)
rootScene.addChild(bear);
// display d-pad
var pad = new HxPad();
pad.x = 0;
pad.y = 224;
rootScene.addChild(pad);
rootScene.backgroundColor = '#aaaaaa';
};
start();
}
static function main() {
game = new Main();
}
}
解説
クラスがJavaScriptのプロトタイプベースからJavaライクなクラスに変わっているので見た目がだいぶ違いますが、基本的に一対一でベタに移植したものです。
名前が衝突しないようにSprite -> HxSpriteのように、クラス名にHxが付きます。
haXeは可変長の引数を許さないため、preloadはリストを受け取るようになっています。
preloadしたリソースはassetsから取得しますが、assetsは単なるオブジェクトではなくHxAssetクラスのgetメソッドで取得します。
enchant.jsのシューティングゲームサンプルの移植
package ;
import js.Dom;
import js.Lib;
import EnchantHX;
import EnchantUtil;
class Main extends HxGame
{
public static var game : Main;
public static var player : Player;
public var touched : Bool;
public var score : Int;
public static var enemies : IntHash<Enemy>;
public static var scoreLabel : HxScoreLabel;
public static function rand(r:Float) : Float {
return Math.random() * r;
}
public function new(w:Int, h:Int) : Void {
super(w, h);
}
static function main()
{
game = new Main(320, 320);
Lib.window.onload = game.run;
}
function run(e:Event) : Void {
game.fps = 24; game.score = 0; game.touched = false; game.preload(['graphic.png']);
game.onload = function() {
player = new Player(0, 152);
enemies = new IntHash<Enemy>();
game.rootScene.backgroundColor = 'black';
game.rootScene.addEventListener(event_ENTER_FRAME, function(e){
if( rand(1000) < game.frame / 20 * Math.sin(game.frame / 100) + game.frame / 20 + 50){
var y = rand(320);
var omega = y < 160 ? 1 : -1;
var enemy = new Enemy(320, y, omega);
enemy.key = game.frame; enemies.set(game.frame,enemy);
}
scoreLabel.score = game.score;
});
scoreLabel = new HxScoreLabel(8, 8);
game.rootScene.addChild(scoreLabel);
}
game.start();
}
}
class Player extends HxSprite {
public function new(x:Int, y:Int) : Void {
super( 16, 16);
this.image = Main.game.assets.get('graphic.png');
this.x = x; this.y = y; //this.frame = 0;
Main.game.rootScene.addEventListener(event_TOUCH_START, function(e:Dynamic) {
Main.player.y = e.y; Main.game.touched = true; } );
Main.game.rootScene.addEventListener(event_TOUCH_END, function(e){ Main.player.y = e.y; Main.game.touched = false; });
Main.game.rootScene.addEventListener(event_TOUCH_MOVE, function(e) { Main.player.y = e.y; } );
this.addEventListener(event_ENTER_FRAME, function(e) {
if(Main.game.touched && Main.game.frame % 3 == 0){ var s = new PlayerShoot(this.x, this.y); }
});
Main.game.rootScene.addChild(this);
}
}
class Enemy extends HxSprite {
var omega : Float;
var direction : Float;
var moveSpeed : Float;
var time : Float;
public var key : Int;
public function new(x:Float, y:Float, omega){
super(16, 16);
image = Main.game.assets.get('graphic.png');
this.x = x; this.y = y; frame = 3; time = 0;
this.omega = omega; this.direction = 0; moveSpeed = 3;
addEventListener(event_ENTER_FRAME, function(e){
move();
if(this.y > 320 || this.x > 320 || this.x < -this.width || this.y < -this.height){
this.remove();
}else if(this.time++ % 10 == 0){
var s = new EnemyShoot(this.x, this.y);
}
});
Main.game.rootScene.addChild(this);
}
public function move(){
direction += Math.PI / 180 * this.omega;
x -= this.moveSpeed * Math.cos(this.direction);
y += this.moveSpeed * Math.sin(this.direction);
}
public function remove() : Void{
Main.game.rootScene.removeChild(this);
Main.enemies.remove(this.key); //delete this;
}
}
class Shoot extends HxSprite {
var direction : Float;
var moveSpeed : Float;
public function new (x, y, direction){
super(16, 16);
image = Main.game.assets.get('graphic.png');
this.x = x; this.y = y; this.frame = 1;
this.direction = direction;
moveSpeed = 10;
addEventListener(event_ENTER_FRAME, function(e){
this.x += moveSpeed * Math.cos(direction);
this.y += moveSpeed * Math.sin(direction);
if(this.y > 320 || this.x > 320 || this.x < -width || this.y < -height){
remove();
}
});
Main.game.rootScene.addChild(this);
}
public function remove(){ Main.game.rootScene.removeChild(this); }
}
class PlayerShoot extends Shoot {
public function new (x, y) : Void {
super(x, y, 0);
addEventListener(event_ENTER_FRAME, function(e){
for(i in Main.enemies){
if(i.intersect(this)){
remove(); i.remove(); Main.game.score += 100;
}
}
});
}
}
class EnemyShoot extends Shoot {
public function new (x, y) : Void{
super(x, y, Math.PI);
this.addEventListener(event_ENTER_FRAME, function(e){
if (Main.player.within(this, 8)) { Main.game.end(Main.game.score, "SCORE: " + Main.game.score); }
});
}
}
