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Author: GamerIDGoesHere (posted 2014-03-02 10:29:54, viewed 231 times)

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package ms.nac.spacejunk.gen;

import static org.lwjgl.opengl.GL11.*;

import ms.nac.spacejunk.logic.Tile;
import ms.nac.spacejunk.main.Game;
import ms.nac.spacejunk.player.MainPlayer;
import ms.nac.spacejunk.states.MenuCore;

import org.lwjgl.input.Keyboard;
import org.lwjgl.openal.AL;
import org.lwjgl.opengl.Display;
import org.newdawn.slick.Color;


public class RandomTerrain {
   
   public MainPlayer player;

   public static int TILE_SIZE = 4; // tile size in pixels
   protected int width = 4096; // map dimensions
   protected int height = 192;
   protected static Tile[] tiles; // tile array

   public RandomTerrain() {

      makeTiles();

      loop();
      
   }

      private void makeTiles() {

            tiles = new Tile[width * height];

            SimplexNoise noise = new SimplexNoise();

            int freq = 400;
            
            for(int x=0;x<width;x++) {
               float h = (noise.noise((float) x / freq, 0) + 1) / 2; // make noise 0 to 1
               
               for(int y=0;y<height;y++) {
                  float current = (float) (height - y) / height;
                  
                  if(current > h) tiles[x+y*width]=Tile.grassTile;
                  else tiles[x+y*width]=Tile.rockTile;
                  
               }
            }

         }
      public static void loadText() {
         glEnable(GL_BLEND);
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
      }
   public void loop() {
      while (!Display.isCloseRequested()) {

         tick();
         
         render();
         Color.white.bind();

         RandomTerrain.loadText();
         MenuCore.font.drawString(50,
               50, "Seed: " + SimplexNoise.getSeed(), Color.white);
         RandomTerrain.cleanUp();
         player = new MainPlayer();
         player.draw();
         
         Display.update();
         Display.sync(60);
         Game.resize();

      }
      Display.destroy();
      AL.destroy();
      System.exit(0);
   }
   public static void cleanUp() {
      glDisable(GL_BLEND);
   }
   private void render() {
      glClear(GL_COLOR_BUFFER_BIT);
      // Draw the sky
      glBegin(GL_QUADS);

      glColor3d(0.7, 0.8, 0.9);
      glVertex2d(0, 0);
      glVertex2d(Display.getWidth(), 0);

      glColor3d(0.5, 0.6, 0.8);
      glVertex2d(Display.getWidth(), Display.getHeight());
      glVertex2d(0, Display.getHeight());

      glEnd();
      for (int y = 0; y < height; y++) {
         for (int x = 0; x < width; x++) {

            if (tiles[x + y * width] == Tile.rockTile) {
               render(x * TILE_SIZE, y * TILE_SIZE, TILE_SIZE, TILE_SIZE); // render dirt tile
         //   } else {
         //      if (tiles[x + y * width] == 2) {
         //         render(x * size, y * size, size, size, 0.2f, 0.8f, 0.2f); // render grass tile
         //      }
            }

         }
      }

   }

   private boolean wasDown = false;

   private void tick() {

      boolean down = Keyboard.isKeyDown(Keyboard.KEY_R);

      if (!wasDown && down) {
         makeTiles();
      }

      wasDown = down;
      
      if(Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)) {
         Display.destroy();
         AL.destroy();
         System.exit(0);
      }

   }
   

   public static Tile render(int x, int y, int width, int height/*, float r, float g, float b*/) {

      glBegin(GL_QUADS);

   //   glColor3f(r, g, b);

      glVertex2f(x, y);
      glVertex2f(x + width, y);
      glVertex2f(x + width, y + height);
      glVertex2f(x, y + height);

      glEnd();
      return tiles[x + y * width];
   }

}





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