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  Collision from text file  (Read 560 times)
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Offline Shazer2

Junior Member


Medals: 3


Aspiring developer.


« Posted 2011-09-06 14:24:27 »

When I used to store my map as a 2D Array I could simply check the players position against the position in the 2D array (x, y) now that I read from a text file I'm not sure how to do so. Below is my code.

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package game;

import java.awt.Graphics;
import java.awt.Image;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import javax.imageio.ImageIO;

public class Map {
   
   Image key;
   Image wall;
   
   public Map() {
      try {
         wall = ImageIO.read(new File("src/img/wall.png"));
         key = ImageIO.read(new File("src/img/key.png"));
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
   
   public boolean isBlockedWall(int bx, int by) {
     
      for (int x = 0; x < 37; x++) {
         for (int y = 0; y < 15; y++) {
           
         }
      }
     
      //return map[y][x] == 1;
  }
   
   public boolean getGoal(int x, int y) {
      return map[y][x] == 2;
   }
   
   public void draw(Graphics g, Player player) {
        int width = 32;
        int height = 32;

        //for (int x = 0; x < 37; x++) {
          //for (int y = 0; y < 15; y++) {
             //switch(map[y][x]) {
             //case 1:
                //g.drawImage(wall, (x - player.x) * width, (y - player.y) * height, null);
                //break;
             //case 2:
                //g.drawImage(key, (x - player.x) * width, (y - player.y) * height, null);
                //break;
             //}
          //}
      // }
       
        try {
           BufferedReader in = new BufferedReader(new FileReader(new File("src/levels/1.txt")));
           String read = in.readLine();
           char letter = 0;
           
         for (int x = 0; x < 37; x++) {
            for (int y = 0; y < 15; y++) {
               if (read.charAt(y) == '1') {
                  if (read.charAt(x) == '1') {
                     g.drawImage(wall, (x - player.x) * width, (y - player.y) * height, null);
                  }
               }
            }
         }
      } catch (IOException e) {
         e.printStackTrace();
      }
   }
}


There are obvious errors in isBlockedWall, so I'm wondering how to rectify it.

Shannon.

"When you want to be successful as bad as you want to breathe, then you will be successful." - Eric Thomas
Offline cylab

JGO Ninja


Medals: 38



« Reply #1 - Posted 2011-09-06 16:15:25 »

Read the files content into the map[][] array when starting a map (I would suggest to add a loadMap(String location) method for this) and change your collision code back to the way it was.

Reading in a file on every draw() call is highly unwanted, since it limits your render speed to how fast your file can be read...

Mathias - I Know What [you] Did Last Summer!
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