#include "monster.h"

Monster::Monster(IMAGE* floor, Map* map) :Mover(floor, map)
{
	fear = 0;
	x = BLOCK_SIZE * 9 + BLOCK_SIZE / 2;
	y = BLOCK_SIZE * 6 + BLOCK_SIZE / 2;
	speed = 1;

	ImportImage("image/Pinky.png");
}

int Monster::Update(int px, int py)
{
	if (fear == 0)
	{
		if (TryEatPlayer(px, py))
			return -1;
	}
	else if (fear > 0)
	{
		fear--;
		if (EscapePlayer(px, py))
		{
			fear = -1000;
			return 1;
		}
	}
	else
	{
		// 死亡，返回重生区

		// 待补充代码
		fear++;
	}
	
	return 0;
}

bool Monster::TryEatPlayer(int px, int py)
{
	dir = GainDirToEatPlayer(px,py);
	if (Move())
	{
		int dx = px - x;
		int dy = py - y;
		if (abs(dx) < EAT_TOLERANCE && abs(dy) < EAT_TOLERANCE)
			return true;
	}
	else
	{
		dir += 1;
		dir %= 2;
		Move();
	}

	return false;

}

bool Monster::EscapePlayer(int px, int py)
{
	dir = -GainDirToEatPlayer(px, py);
	if (Move())
	{
		int dx = px - x;
		int dy = py - y;
		if (abs(dx) < EAT_TOLERANCE && abs(dy) < EAT_TOLERANCE)
			return true;
	}
	else
	{
		dir += 1;
		dir %= 2;
		Move();
	}
	return false;
}

void Monster::SetFear(int f)
{
	fear = f;
}

int Monster::GetFear()
{
	return fear;
}

int Monster::GainDirToEatPlayer(int px, int py)
{
	
		int dir = DIR_NONE;
	if (px < x - MOVE_TOLERENCE / 2)
	{
		dir = DIR_LEFT;
	}
	else if (px > x + MOVE_TOLERENCE / 2)
	{
		dir = DIR_RIGHT;
	}
	else if (py < y - MOVE_TOLERENCE / 2)
	{
		dir = DIR_UP;
	}
	else if (py > y + MOVE_TOLERENCE / 2)
	{
		dir = DIR_DOWN;
	}



	/*
	int dir = this->dir;
	static int ddd = 1000;
	ddd--;
	if (ddd == 0)
	{
		dir = rand() % 5 - 2;
		while (dir == 0)
		{
			dir = rand() % 5 - 2;
		}
		ddd = 1000;
	}
	*/


	return dir;
}