Java-Gaming.org Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (777)
Games in Android Showcase (231)
games submitted by our members
Games in WIP (856)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Placing houses on random generated map?  (Read 1141 times)
0 Members and 1 Guest are viewing this topic.
Offline GustavXIII

Junior Devvie


Projects: 1



« Posted 2018-10-19 12:29:15 »

EDIT: Fixed it by checking distance between houses.

If I create a random generated map with 2 dimension array like [50][50], how could I add random houses?
I thought about putting a random number inside every array field and if the number is like 7, then a house will be generated there.
I would have to edit the surrounding arrays to make it like a house shape.

But the problem is, what if many houses spawn close together? Then it would be weird having houses inside each other.
Is there some other solution?

1  
int mapArray[][]= new int[50][50];


1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
  public void createMap(){
            Random rand = new Random();

            for (int x = 0; x < mapArray.length; x++) {
               for (int y = 0; y < mapArray[x].length; y++) {
                  int i = rand.nextInt(200);
                  if (i==199) mapArray[x][y] = 2;
                  else if (i > 150) mapArray[x][y] = 1;                
                  else mapArray[x][y] = 0;
               }
            }
}


2 means a house should be build. 0 is grass tile and 1 earth.


I draw Map like this:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
public void drawMap(Graphics g){
        for (int x = 0; x < mapArray.length; x++) {
            for (int y = 0; y < mapArray[x].length; y++) {
               switch (mapArray[x][y]) {
               case 0: g.drawImage(grass, x * 64, y * 64);  
               break;
               case 1: g.drawImage(earth, x * 64, y * 64);
               break;
               case 2: g.drawImage(stone, x * 64, y * 64);
               break;            
               }
            }
         }        
     }
Offline fenaryh
« Reply #1 - Posted 2018-12-07 21:19:15 »

Hi, GustavXIII!

The way I usually do is for every object I've created in the map, it will hold his position AND size, like (x, y, width, height). And all of them will be added to a List (Array, LinkedList, etc)

So, any time you will try to create an object, you check before, using simple rectangle collision between the new one and all of the array, like so:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
class ObjectCreator(){
   
   public static void createObject(){

      MyObject newObject = new MyObject(random_x, random_y, type_of_object_width, type_of_object_height);

      boolean collide = false;
     
      for(MyObject myobj : arrayOfMyObjects){
         if(collides(myobj, newObject)){
            //OBJECTS ARE COLLIDING, SO YOU DON'T ADD            
            collide = true;
            return; //just one collide is enough, don't need to continue walkin the array
         }
      }
     
      if(!collide){
         arrayOfMyObjects.add(newObject);
      }

   }
   public boolean collides(MyObject A, MyObject B){

      Rectangle rA = new Rectangle(A.x, A.y, A.width, A.height);
      Rectangle rB = new Rectangle(B.x, B.y, B.width, B.height);

      return rA.intersects(rB);
   }
   
}


This way you can have multiple objects with different sizes.

Hope it can help!
Pages: [1]
  ignore  |  Print  
 
 

 
hadezbladez (288 views)
2018-11-16 13:46:03

hadezbladez (157 views)
2018-11-16 13:41:33

hadezbladez (289 views)
2018-11-16 13:35:35

hadezbladez (70 views)
2018-11-16 13:32:03

EgonOlsen (2133 views)
2018-06-10 19:43:48

EgonOlsen (2151 views)
2018-06-10 19:43:44

EgonOlsen (1363 views)
2018-06-10 19:43:20

DesertCoockie (1966 views)
2018-05-13 18:23:11

nelsongames (1599 views)
2018-04-24 18:15:36

nelsongames (2247 views)
2018-04-24 18:14:32
Deployment and Packaging
by mudlee
2018-08-22 18:09:50

Java Gaming Resources
by gouessej
2018-08-22 08:19:41

Deployment and Packaging
by gouessej
2018-08-22 08:04:08

Deployment and Packaging
by gouessej
2018-08-22 08:03:45

Deployment and Packaging
by philfrei
2018-08-20 02:33:38

Deployment and Packaging
by philfrei
2018-08-20 02:29:55

Deployment and Packaging
by philfrei
2018-08-19 23:56:20

Deployment and Packaging
by philfrei
2018-08-19 23:54:46
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!