#include <stdio.h>
#include <libps.h>

#include "action.h"

short	ActNum;					/* 現在アクティブなAct */
action	ActWork[ACT_MAX];		/* action構造体の配列 */

/*----------------------------------------------------------------------
	action構造体初期化
----------------------------------------------------------------------*/
void InitAct( void ){

	short   i;

	for (i=0;i<ACT_MAX;i++){
		ActWork[i].ID = EMPTY;

	}
}
/*----------------------------------------------------------------------
【空いてるワークのポインタを得る】
----------------------------------------------------------------------*/
action* GetEmptyActPtr( void ){

	short i;
	action *ap;
	ap = ActWork;

	for ( i=0; i<ACT_MAX; i++,ap++ ){
		if ( ap->ID == EMPTY ) return (ap);
	}
	return (NULL);
}
/*----------------------------------------------------------------------
【処理終了】
----------------------------------------------------------------------*/
void ResetAction( void ){

	ActWork[ActNum].ID = EMPTY;

}
/*----------------------------------------------------------------------
【action処理】
----------------------------------------------------------------------*/
void GoAction( void ){

	short i;
	action *ap;
	ap = ActWork;

	for (i=0; i<=ACT_MAX; i++, ap++ ){
		ActNum = i;
		if ( ap->ID != EMPTY ){
			ap->fnAction( ap );
		}
	}
}
/*----------------------------------------------------------------------
【action切換え】
----------------------------------------------------------------------*/
void ChangeAction( void *newfunc ){

		ActWork[ActNum].fnAction = newfunc;
}

/*----------------------------------------------------------------------
【RECT当たり判定】

in : action *ACT	自分のaction構造体

out: short			はずれ＝NULL

----------------------------------------------------------------------*/
short CheckCollisionRect( action *ap ){

	action	*cp;
	short	i;
	short	top,bottom,left,right;
	short	dtop,dbottom,dleft,dright;

	left = ap->posX + ap->collision.x;
	right = left + ap->collision.w;
	top = ap->posY + ap->collision.y;
	bottom = top + ap->collision.h;

	cp = ActWork;
	for ( i=0; i <= ACT_MAX; i++, cp++ ){
		if ( cp->ID != 0 ){
			dleft = cp->posX + cp->collision.x;
			dright = dleft + cp->collision.w;
			dtop = cp->posY + cp->collision.y;
			dbottom = dtop + cp->collision.h;
			if ((left >= dleft || right > dleft)
					&& ( left < dright || right < dright )
					&& ( top >= dtop || bottom > dtop )
					&& ( top < dbottom || bottom < dbottom )) {
				ap->ptr0 = cp;					/* 当たった相手を記録 */
				cp->message |= COLLISION;		/* 相手に当たり通知 */
				cp->ptr0 = ap;					/* 当たったのは俺じゃ！ */
				return ( 1 );
			}
		}
	}
	return ( NULL );
}