#include "boss1_action.h"

static void
null_collision(SceneGraphPtr node, int screen_w, int screen_h,
	       SceneGraphPtr tree)
{
}

static void
boss1_move_right(SceneGraphPtr node, int screen_w, int screen_h) {
  node->xyz[0] += node->stack_xyz[0];
  if(node->xyz[0] > (screen_w - boss_radius_x)) {
    node->set_move_collision(boss1_move_left, null_collision);
  }
}

//ボスが左に移動する動作
static void
boss1_move_left(SceneGraphPtr node, int screen_w, int screen_h) {
  node->xyz[0] -= node->stack_xyz[0];
  if(node->xyz[0] < boss_radius_x) {
    node->set_move_collision(boss1_move_right, null_collision);
  }
}

static void
player_move(SceneGraphPtr node, int screen_w, int screen_h)
{
  Pad *pad = sgroot->getController();
  
  if (pad->left.isPush()
      || pad->left.isHold()) {
#if 0
    SceneGraphPtr player_left;
    player_left =  sgroot->createSceneGraph(PLAYER_L);
    player_left->set_move_collision(player_move_left, null_collision);
    player_left->xyz[0] = node->xyz[0];
    player_left->xyz[1] = node->xyz[1];
    node->addChild(player_left);
    node->flag_drawable = 1;
#endif
    node->xyz[0] -= player_speed;
    
    if (node->xyz[0] - player_radius< 0) {
      node->xyz[0] = player_radius;
    }
  }
  
  
  if (pad->right.isPush()
      || pad->right.isHold()) {
    node->xyz[0] += player_speed;
    
    if (node->xyz[0] + player_radius > screen_w) {
      node->xyz[0] = screen_w - player_radius;
    }
  }
  
  if (pad->up.isPush()
      || pad->up.isHold()) {
    node->xyz[1] -= player_speed;
    
    if (node->xyz[1] - player_radius < 0) {
      node->xyz[1] = player_radius;
    }
  }
  
  if (pad->down.isPush()
      || pad->down.isHold()) {
    node->xyz[1] += player_speed;
    
    if (node->xyz[1] + player_radius > screen_h) {
      node->xyz[1] = screen_h - player_radius;
    }
  }
  
  if (pad->circle.isPush()) {
    SceneGraphPtr shot = sgroot->createSceneGraph(P_SHOT1);
    shot->set_move_collision(shot_move, shot_collision);
    shot->xyz[0] = node->xyz[0];
    shot->xyz[1] = node->xyz[1] - player_radius;
    node->addBrother(shot);
  }    
}

static void
player_collision(SceneGraphPtr node, int screen_w, int screen_h,
		 SceneGraphPtr tree)
{
  //自機とボスのx,y座標での距離と2点間の距離
  static float x_distant, y_distant, distance;
  //ボスの四角形の四隅の座標
  //  static float boss_low_x, boss_low_y, boss_high_x, boss_high_y;
  
  SceneGraphIteratorPtr it = sgroot->getIterator(tree);
  
  
  for (; it->hasNext(BOSS1);) {
    it->next(BOSS1);
    SceneGraphPtr enemy = it->get();
    
    //各変数の初期化
    x_distant = node->xyz[0] - enemy->xyz[0];
    y_distant = node->xyz[1] - enemy->xyz[1];
    
    //hypotfで2点間の距離を求める
    distance = hypotf(x_distant, y_distant);
    
    /*四角形と円のcollision
    if( (fabs( node->xyz[1] - ( boss_low_y )))
    */
    
    //円同士のcollision
    if(distance < (player_radius + boss_radius_y)) {
      printf("!!!CAUTION!!!\n");
    }
  }
}

static void
shot_move(SceneGraphPtr node, int screen_w, int screen_h)
{
  node->xyz[1] -= shot_speed;
  
  // 描画領域から抜けたら削除
  if (node->xyz[1] < 0) {
    node->remove();
  }
}

static void
shot_collision(SceneGraphPtr node, int screen_2, int screen_h,
	       SceneGraphPtr tree)
{
  //自機とボスのx,y座標での距離と2点間の距離
  static float x_distant, y_distant, distance;
  //ボスの四角形の四隅の座標
  //  static float boss_low_x, boss_low_y, boss_high_x, boss_high_y;
  
  SceneGraphIteratorPtr it = sgroot->getIterator(tree);
  
  
  for (; it->hasNext(BOSS1);) {
    it->next(BOSS1);
    SceneGraphPtr enemy = it->get();
    
    x_distant = node->xyz[0] - enemy->xyz[0];
    y_distant = node->xyz[1] - enemy->xyz[1];
    
    //hypotfで2点間の距離を求める
    distance = hypotf(x_distant, y_distant);
    
    //円同士のcollision
    if(distance <  boss_radius_y) {
      SceneGraphPtr blast = sgroot->createSceneGraph(BLAST1);
      
      blast->set_move_collision(blast_move, null_collision);
      blast->xyz[0] = node->xyz[0];
      blast->xyz[1] = node->xyz[1];
      node->addBrother(blast);
      node->remove();
    }
  }
}

static void
blast_move(SceneGraphPtr node, int screen_w, int screen_h)
{
  if(node->sgid > BLAST8) {
    SceneGraphPtr blast = sgroot->createSceneGraph(node->sgid - 1);
    blast->set_move_collision(blast_move, null_collision);
    blast->xyz[0] = node->xyz[0];
    blast->xyz[1] = node->xyz[1];
    node->addBrother(blast);
  }
  
  if (node->sgid == BLAST8) {
    node->flag_drawable = 1;
  }
  
  if((node->frame > 1)) {
    node->remove();
  }
  node->frame += 1;
}
  
void
boss1_init(int screen_w, int screen_h)
{
  SceneGraphPtr root;
  SceneGraphPtr player;
  SceneGraphPtr boss1;
  SceneGraphPtr left_parts;
  SceneGraphPtr right_parts;

  sgroot->createFromXMLfile("xml_file/boss1.xml");
  sgroot->createFromXMLfile("xml_file/player.xml");
  sgroot->createFromXMLfile("xml_file/p_shot.xml");
  sgroot->createFromXMLfile("xml_file/blast.xml");
  
  //rootとなるSceneGraphを生成
  root = sgroot->createSceneGraph();
  
  //自機の初期化
  player = sgroot->createSceneGraph(PLAYER);
  player->xyz[0] = screen_w/2;
  player->xyz[1] = screen_h - player_radius;
  root->addChild(player);

  //ボスの初期化
  boss1 = sgroot->createSceneGraph(BOSS1);
  boss1->xyz[0] = screen_w/2;
  boss1->xyz[1] = boss_radius_y;
  //  boss1->xyz[2] = first_boss1_depth;
  boss1->stack_xyz[0] = first_boss1_speed;
  root->addChild(boss1);

  //ボスの左右パーツを追加
  left_parts = sgroot->createSceneGraph(BOSS1_L);
  boss1->addChild(left_parts);
  right_parts = sgroot->createSceneGraph(BOSS1_R);
  boss1->addChild(right_parts);

  //各機体の動きと当たり判定をセット
  player->set_move_collision(player_move, player_collision);  
  boss1->set_move_collision(boss1_move_left, null_collision);
  
  //仕上げ
  sgroot->setSceneData(root);
}