package sdu.edu.entities;

import java.awt.Color;
import java.awt.Graphics;

import sdu.edu.util.Global;

public class Ground {

	int[][] obstacles = new int [Global.GAME_WIDTH][Global.GAME_HEIGHT];
	public void accept(Shap shap) {
		System.out.println("Ground's accept");
		for(int x = 0; x < 4; x++) {
			for(int y = 0; y < 4; y++) {
				if(shap.isMember(x, y, false)){
					obstacles[shap.getLeft() + x][shap.getTop() + y] = 1;
				}
			}
		}
		deleteFullLine();
	}
	
	private void deleteFullLine() {//删除所有行
		int y = Global.GAME_HEIGHT - 1;
		for(y = Global.GAME_HEIGHT - 1; y >= 0; y--) {
			boolean full = true;
			for(int x = 0; x < Global.GAME_WIDTH; x++) {
				if(obstacles[x][y] == 0){
					full = false;
				}
			}
			if(full){//
				deleteLine(y);
				y = Global.GAME_HEIGHT;//次句相当重要，不然只会消掉一行
			}
		}
	}
	
	private void deleteLine(int line) {//删除第y行
		for(int y = line; y > 0; y--) {
			for(int x = 0; x < Global.GAME_WIDTH; x++) {
				obstacles[x][y] = obstacles[x][y - 1];
			}
		}
		for(int x = 0; x < Global.GAME_WIDTH; x ++) {
			obstacles[x][0] = 0;
		}
	}
	
	public boolean isFull() {
		for(int x = 0; x < Global.GAME_WIDTH; x++) {
			if(obstacles[x][0] == 1)
				return true;
		}
		return false;
	}

	public void drawMe(Graphics g) {
		Color c = g.getColor();
		g.setColor(Color.BLUE);
		System.out.println("Ground's drawMe");
		for(int i = 0; i < Global.GAME_WIDTH; i++) {
			for(int j = 0; j < Global.GAME_HEIGHT; j++){
				if(obstacles[i][j] == 1)
				g.fill3DRect(i * Global.CELL_WIDTH, j * Global.CELL_HEIGHT, Global.CELL_WIDTH,
						Global.CELL_HEIGHT, true);
			}
		}
		g.setColor(c);
	}
	
	public boolean isShapMove(Shap shap, int action) {
		int top = shap.getTop();
		int left = shap.getLeft();
		switch (action) {
		case Shap.LEFT:
			left --;
			break;
		case Shap.RIGHT:
			left ++;
			break;
		case Shap.DOWN:
			top ++;
			break;
		}
		for(int x = 0; x < 4; x++) {
			for(int y = 0; y < 4; y++) {
				if(shap.isMember(x, y, action == Shap.RARTE)){
					if(top + y >= Global.GAME_HEIGHT ||
							left < 0 || left + x >= Global.GAME_WIDTH ||
							obstacles[left + x][top + y] == 1)
						return false;
				}
			}
		}
		return true;
	}
}