anodyne/AIR/intra/hsrc/entity/enemy/etc/Chaser.hx

package entity.enemy.etc 
{
import entity.player.Player;
import flash.geom.Point;
import global.Registry;
import helper.EventScripts;
import org.flixel.FlxG;
import org.flixel.FlxSprite;
import org.flixel.system.FlxTile;

class Chaser extends FlxSprite 
{
	private var xml:XML;
	private var player:Player;
	private var parent:Dynamic;
	
	
	private var state:Int;
	private static inline var s_idle:Int=0;
	private static inline var s_moving:Int=1;
	
	private var dame_type:Int;
	private var dt_hori:Int=0;	
	private var dt_vert:Int=1;
	
	private var float_vel:Int=15;
	
	private var tl:Point;
	
	private var lookahead:Point;
	
	
	//[Embed(source="../../../res/sprites/enemies/etc/chaser.png")] public static var embed_chaser_sprite:Class;
	
	public function new(_xml:XML, _player:Player, _parent:Dynamic)
	{
		xml=_xml;
		player=_player;
		parent=_parent;
		super(parseInt(xml.@x), parseInt(xml.@y));
		
		dame_type=parseInt(xml.@frame);
		
		state=s_idle;
		
		tl=new Point(Registry.CURRENT_GRID_X * 160, Registry.CURRENT_GRID_Y * 160 + Registry.HEADER_HEIGHT);
		lookahead=new Point(0, 0);
		
		
		loadGraphic(embed_chaser_sprite, true, false, 16, 32);
		width=height=8;
		offset.y=20;
		offset.x=4;
		x +=4;
		y +=20;
		// MARINA_ANIMS
		if(dame_type==dt_hori){
			frame=6;
		} else {
			frame=4;
		}
		addAnimation("d", [4, 5], 8);
		addAnimation("r", [6,7], 8);
		addAnimation("u", [8, 9], 8);
		addAnimation("l", [10,11], 8);
		addAnimationCallback(on_anim_change);
		
	}
	
	override public function preUpdate():Void 
	{
		super.preUpdate();
	}
	
	override public function update():Void 
	{
		if(Registry.keywatch.JP_ACTION_1){
			Registry.sound_data.play_sound_group(Registry.sound_data.mover_move_group);
		}
		
		if(player.broom.visible){
			if(Math.abs(velocity.x)<100 && Math.abs(velocity.y)<100){
				velocity.x *=1.025;
				velocity.y *=1.025;
			}
		} else {
			float_vel=15;
		}
		switch(state){
			case s_idle:
				
				if(dame_type==dt_hori){
					if(player.y>y - player.height && player.y<y + height){
						state=s_moving;
						Registry.sound_data.play_sound_group(Registry.sound_data.mover_die_group);
						if(player.x>x){
							velocity.x=float_vel;
							play("r");
 							} else {
							velocity.x=-float_vel;
							play("l");
						}
					}
				} else if(dame_type==dt_vert){
					if(player.x + player.width>x && player.x<x + width){
						state=s_moving;
						Registry.sound_data.play_sound_group(Registry.sound_data.mover_die_group);
						if(player.y>y){
							play("d");
							velocity.y=float_vel;
						} else {
							play("u");
							velocity.y=-float_vel;
						}
					}
				}
				break;
			case s_moving:
				if(EventScripts.get_tile_allow_collisions(lookahead.x,lookahead.y,parent.curMapBuf)){
					switch(facing){
						case UP:
							facing=DOWN;
							play("d");
							velocity.y *=-1;
							break;
						case DOWN:
							play("u");
							facing=UP;
							velocity.y *=-1;
							break;
						case LEFT:
							play("r");
							facing=RIGHT;
							velocity.x *=-1;
							break;
						case RIGHT:
							play("l");
							facing=LEFT;
							velocity.x *=-1;
							break;
					}
				}
				// Now update the lookahead point to reflect the possible state change above
				if(facing &(UP | DOWN)){
					if(facing & UP){
						lookahead.y=y;
						lookahead.x=x + width / 2;
					} else {
						lookahead.x=x + width / 2;
						lookahead.y=y + height;
					}
				} else {
					if(facing & RIGHT){
						lookahead.x=x + width;
						lookahead.y=y + height / 2;
					} else {
						lookahead.x=x;
						lookahead.y=y + height / 2;
					}
				}
				
				// Check to kill the player
				if(player.overlaps(this)){
					player.touchDamage(6);
				}
				break;
		}
		super.update();
	}
	
	private function on_anim_change(name:String, frame:Int, index:Int):Void {
		switch(name){
			case "u":
				facing=UP;
				break;
			case "d":
				facing=DOWN;
				break;
			case "l":
				facing=LEFT;
				break;
			case "r":
				facing=RIGHT;
				break;
		}
	}
	
	override public function destroy():Void 
	{
		tl=null;
		super.destroy();
	}
}