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  1. package world;
  2.  
  3. import exceptions.ChunkNotLoadedException;
  4. import gen.ChunkLoader;
  5. import gen.WorldBuilder;
  6.  
  7. import java.awt.Color;
  8. import java.awt.Graphics2D;
  9. import java.awt.Point;
  10. import java.awt.image.BufferedImage;
  11. import java.io.FileNotFoundException;
  12. import java.util.ArrayList;
  13. import java.util.concurrent.Phaser;
  14.  
  15. import main.GraphicsMain;
  16.  
  17. public class World implements ScreenComponent{
  18.  
  19. 	private volatile ArrayList<Chunk> chunks = new ArrayList<Chunk>();
  20. 	private volatile int chunksStability = 0; //+'ive = # threads accessing, -'ive = # threads editing
  21. 	private volatile Object chunkStabilityCountLock = new Object();
  22. 	private volatile Phaser chunkStabilityPhaser = new Phaser() {
  23. 		protected boolean onAdvance(int phase, int registeredParties) {
  24. 			synchronized(chunkStabilityCountLock)
  25. 			{
  26. 				if (registeredParties == 0)
  27. 				{
  28. 					chunksStability = 0;
  29. 				}
  30. 				else
  31. 				{
  32. 					chunksStability = Math.max(Math.min(chunksStability*-1, 1), -1);
  33. 				}
  34. 			}
  35. 			return false;
  36. 		}
  37. 	};
  38.  
  39. 	private WorldBuilder worldBuilder;
  40.  
  41. 	public World(String fileName) throws FileNotFoundException {
  42. 		worldBuilder = new WorldBuilder(fileName);
  43. 	}
  44.  
  45. 	public void load()
  46. 	{
  47. 		worldBuilder.loadWorld();
  48. 	}
  49.  
  50. 	public void update() {
  51. 		growVillages();
  52. 		lockEditChunks();
  53. 		for (Chunk c : chunks)
  54. 		{
  55. 			c.update();
  56. 		}
  57. 		unlockEditChunks();
  58.  
  59. 		ArrayList<Village> villages = getVillages();
  60. 		for (Village v : villages)
  61. 		{
  62. 			v.update();
  63. 		}
  64. 	}
  65.  
  66. 	public void growVillages()
  67. 	{
  68. 		ArrayList<Village> toGrow = getGrownVillages();
  69. 		for (Village v : toGrow)
  70. 		{
  71. 			boolean complete = true;
  72. 			int maxDX = (int)(v.getRelativeChunkCenter().getX());
  73. 			int maxDY = (int)(v.getRelativeChunkCenter().getY());
  74. 			int oldVillageChunkLength = v.getChunkSideLength(v.getSizeRank()-v.getGrowth());
  75. 			for (int dX = (int) (-1*v.getRelativeChunkCenter().getX()); dX <= maxDX; ++dX)
  76. 			{
  77. 				for (int dY = (int) (-1*v.getRelativeChunkCenter().getY()); dY <= maxDY; ++dY)
  78. 				{
  79. 					if (dX < oldVillageChunkLength*-1 || dX > oldVillageChunkLength || dY < oldVillageChunkLength*-1 || dY > oldVillageChunkLength)
  80. 					{
  81. 						Chunk cur;
  82. 						try {
  83. 							cur = getChunk(v.getX()+dX, v.getY()+dY);
  84. 						} catch (ChunkNotLoadedException e) {
  85. 							complete = false;
  86. 							continue;
  87. 						}
  88. 						//TODO decide what to do if there is already a village there
  89. 						cur.addVillage(v);
  90. 					}
  91. 				}
  92. 			}
  93. 			v.resetGrowth();
  94. 		}
  95. 	}
  96.  
  97. 	@Override
  98. 	public BufferedImage draw() { return draw(GraphicsMain.WIDTH/-2, GraphicsMain.HEIGHT/-2, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
  99. 	public BufferedImage draw(int x, int y) { return draw(x, y, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
  100. 	public BufferedImage draw(int x, int y, int width, int height)
  101. 	{
  102. 		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
  103. 		Graphics2D gI = image.createGraphics();
  104.  
  105. 		drawChunks(x, y, width, height, gI);
  106. 		drawVillagers(x, y, gI);
  107. 		gI.dispose();
  108. 		return image;
  109. 	}
  110.  
  111. 	private void drawChunks(int x0, int y0, int width, int height, Graphics2D gI)
  112. 	{
  113. 		for (int x = (int) ((x0-.0)/Chunk.getPixelLength()-0.5); x <= Math.ceil(((double)x0+width)/Chunk.getPixelLength()); ++x)
  114. 		{
  115. 			for (int y = (int) ((y0-.0)/Chunk.getPixelLength()-0.5); y <= Math.ceil(((double)y0+height)/Chunk.getPixelLength()); ++y)
  116. 			{
  117. 				Chunk c;
  118. 				try {
  119. 					c = getChunk(x, y);
  120. 				} catch (ChunkNotLoadedException e) {
  121. 					continue;
  122. 				}
  123.  
  124. 				int cScreenX = (int)((x-0.5)*Chunk.getPixelLength()-x0), cScreenY = (int)((y-0.5)*Chunk.getPixelLength()-y0);
  125. 				if (!(cScreenX <= width && cScreenX+Chunk.getPixelLength() >= 0 && cScreenY <= width && cScreenY+Chunk.getPixelLength() >= 0)) //Check that shouldn't fail!
  126. 				{
  127. 					System.out.println("WHOOPS! Check src.world.World.drawChunks()!");
  128. 				}
  129. 				BufferedImage cI = c.draw();
  130. 				gI.drawImage(cI, cScreenX, cScreenY, Chunk.getPixelLength(), Chunk.getPixelLength(), null);
  131. 			}
  132. 		}
  133. 	}
  134.  
  135. 	private void drawVillagers(int screenX0, int screenY0, Graphics2D gI)
  136. 	{
  137. 		ArrayList<Village> villages = getVillages();
  138. 		for (Village v : villages)
  139. 		{
  140. 			for (Villager villager : v.getPopulation())
  141. 			{
  142. 				double vAbsX = villager.getRelativeX()+(v.getX()-screenX0+0.5)*Chunk.lengthOfChunk-0.5, vAbsY = villager.getRelativeY()+(v.getY()-screenY0+0.5)*Chunk.lengthOfChunk-0.5;
  143. 				//gI.drawImage(villager.draw(), (int)(vAbsX*Building.lengthOfBuilding), (int)(vAbsY*Building.lengthOfBuilding), null);
  144. 			}
  145. 		}
  146. 	}
  147.  
  148. 	private ArrayList<Village> getGrownVillages()
  149. 	{
  150. 		ArrayList<Village> villages = getVillages();
  151. 		ArrayList<Village> grownVillages = new ArrayList<Village>();
  152. 		for (int i = 0; i < villages.size(); ++i)
  153. 		{
  154. 			if (villages.get(i).getGrowth() != 0)
  155. 			{
  156. 				grownVillages.add(villages.get(i));
  157. 			}
  158. 		}
  159. 		return grownVillages;
  160. 	}
  161.  
  162. 	private ArrayList<Chunk> getGrownVillageChunks()
  163. 	{
  164. 		ArrayList<Chunk> grownVillageChunks = new ArrayList<Chunk>();
  165.  
  166. 		lockEditChunks();
  167. 		for (Chunk c : chunks)
  168. 		{
  169. 			if (c.hasVillage() && c.getVillage().getGrowth() != 0)
  170. 			{
  171. 				grownVillageChunks.add(c);
  172. 			}
  173. 		}
  174. 		unlockEditChunks();
  175. 		return grownVillageChunks;
  176. 	}
  177.  
  178. 	private ArrayList<Village> getVillages()
  179. 	{
  180. 		ArrayList<Village> villages = new ArrayList<Village>();
  181. 		// Iterator has issues when the ArrayList is modified. 
  182. 		// if the draw thread tries to zoom out and load new chunks during the time this loop is iterating,
  183. 		// the thread will crash
  184. 		lockEditChunks();
  185. 		for (Chunk c : chunks)
  186. 		{
  187. 			if (c.hasVillage() && !villages.contains(c.getVillage()))
  188. 			{
  189. 				villages.add(c.getVillage());
  190. 			}
  191. 		}
  192. 		unlockEditChunks();
  193. 		return villages;
  194. 	}
  195.  
  196. 	private ArrayList<Chunk> getVillageChunks()
  197. 	{
  198. 		ArrayList<Chunk> villageChunks = new ArrayList<Chunk>();
  199.  
  200. 		lockEditChunks();
  201. 		for (Chunk c : chunks)
  202. 		{
  203. 			if (c.hasVillage())
  204. 			{
  205. 				villageChunks.add(c);
  206. 			}
  207. 		}
  208. 		unlockEditChunks();
  209. 		return villageChunks;
  210. 	}
  211.  
  212. 	public Chunk getChunk(int x, int y) throws ChunkNotLoadedException
  213. 	{
  214. 		lockEditChunks();
  215. 		for (Chunk c : chunks)
  216. 		{
  217. 			if (c.getX() == x && c.getY() == y)
  218. 			{
  219. 				unlockEditChunks();
  220. 				return c;
  221. 			}
  222. 		}
  223. 		unlockEditChunks();
  224.  
  225. 		worldBuilder.getChunkLoader().queueLoad(new Point(x, y));
  226.  
  227. 		throw new ChunkNotLoadedException();
  228. 	}
  229.  
  230. 	public void addChunk(Chunk C)
  231. 	{
  232. 		destabalizeChunks();
  233. 		chunks.add(C);
  234. 		stabalizeChunks();
  235. 	}
  236.  
  237.  
  238. 	/**
  239. 	 *  Prevents other threads from editing <b>World.chunks</b>. 
  240. 	 *  Calling this will freeze the thread if another thread has called <b>World.destabalizeChunks()</b>
  241. 	 *  without calling <b>World.stabalizeChunks()</b>
  242. 	 */
  243. 	/*
  244. 	 * #UnArrivedParties = # threads currently requiring stability level
  245. 	 * #ArrivedParties = # threads waiting for opposite stability level
  246. 	 * #RegisteredParites == 0 = no one is accessing/modifying
  247. 	 */
  248. 	public void lockEditChunks()
  249. 	{
  250. 		chunkStabilityPhaser.register();
  251. 		if (this.chunkStabilityPhaser.getUnarrivedParties() > 1 && this.chunksStability < 0) //number threads currently editing > 0
  252. 		{
  253. 			this.chunkStabilityPhaser.arriveAndAwaitAdvance(); //wait until threads editing finish
  254. 		}
  255. 		//SOLVED I THINK
  256. 		//#registered threads > 0 then happened at momentary blip before decrement of chunk stability by threads waiting to modify chunks
  257. 		//#retistered threads == 0 then no threads waiting
  258. 		//other thread performs above check, but for a chunk stability of > 0
  259. 		//continues past believing that no threads are waiting for stable access
  260. 		//then begins editing, and we have a problem
  261. 		//not only that but increment operator messes up
  262. 		synchronized(chunkStabilityCountLock)
  263. 		{
  264. 			++this.chunksStability;
  265. 		}
  266. 	}
  267. 	public void unlockEditChunks()
  268. 	{
  269. 		chunkStabilityPhaser.arriveAndDeregister();
  270. 	}
  271.  
  272. 	/**
  273. 	 *  Prevents other threads requiring stability of <b>World.chunks</b> from continuing 
  274. 	 *  Calling this will freeze the thread if another thread has called <b>World.lockEditChunks()</b>
  275. 	 *  without calling <b>World.unlockEditChunks()</b>
  276. 	 */
  277. 	public void destabalizeChunks()
  278. 	{
  279. 		chunkStabilityPhaser.register();
  280. 		if (this.chunkStabilityPhaser.getUnarrivedParties() > 1 && this.chunksStability > 0) //number threads currently editing > 0
  281. 		{
  282. 			this.chunkStabilityPhaser.arriveAndAwaitAdvance(); //wait until threads editing finish
  283. 		}
  284.  
  285. 		synchronized(chunkStabilityCountLock)
  286. 		{
  287. 			--this.chunksStability;
  288. 		}
  289. 	}
  290.  
  291. 	public void stabalizeChunks()
  292. 	{
  293. 		chunkStabilityPhaser.arriveAndDeregister();
  294. 	}
  295. }
  296.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:17: error: class World is public, should be declared in a file named World.java
public class World implements ScreenComponent{
       ^
Main.java:3: error: package exceptions does not exist
import exceptions.ChunkNotLoadedException;
                 ^
Main.java:4: error: package gen does not exist
import gen.ChunkLoader;
          ^
Main.java:5: error: package gen does not exist
import gen.WorldBuilder;
          ^
Main.java:15: error: package main does not exist
import main.GraphicsMain;
           ^
Main.java:17: error: cannot find symbol
public class World implements ScreenComponent{
                              ^
  symbol: class ScreenComponent
Main.java:19: error: cannot find symbol
	private volatile ArrayList<Chunk> chunks = new ArrayList<Chunk>();
	                           ^
  symbol:   class Chunk
  location: class World
Main.java:39: error: cannot find symbol
	private WorldBuilder worldBuilder;
	        ^
  symbol:   class WorldBuilder
  location: class World
Main.java:148: error: cannot find symbol
	private ArrayList<Village> getGrownVillages()
	                  ^
  symbol:   class Village
  location: class World
Main.java:162: error: cannot find symbol
	private ArrayList<Chunk> getGrownVillageChunks()
	                  ^
  symbol:   class Chunk
  location: class World
Main.java:178: error: cannot find symbol
	private ArrayList<Village> getVillages()
	                  ^
  symbol:   class Village
  location: class World
Main.java:196: error: cannot find symbol
	private ArrayList<Chunk> getVillageChunks()
	                  ^
  symbol:   class Chunk
  location: class World
Main.java:212: error: cannot find symbol
	public Chunk getChunk(int x, int y) throws ChunkNotLoadedException
	       ^
  symbol:   class Chunk
  location: class World
Main.java:212: error: cannot find symbol
	public Chunk getChunk(int x, int y) throws ChunkNotLoadedException
	                                           ^
  symbol:   class ChunkNotLoadedException
  location: class World
Main.java:230: error: cannot find symbol
	public void addChunk(Chunk C)
	                     ^
  symbol:   class Chunk
  location: class World
Main.java:19: error: cannot find symbol
	private volatile ArrayList<Chunk> chunks = new ArrayList<Chunk>();
	                                                         ^
  symbol:   class Chunk
  location: class World
Main.java:42: error: cannot find symbol
		worldBuilder = new WorldBuilder(fileName);
		                   ^
  symbol:   class WorldBuilder
  location: class World
Main.java:53: error: cannot find symbol
		for (Chunk c : chunks)
		     ^
  symbol:   class Chunk
  location: class World
Main.java:59: error: cannot find symbol
		ArrayList<Village> villages = getVillages();
		          ^
  symbol:   class Village
  location: class World
Main.java:60: error: cannot find symbol
		for (Village v : villages)
		     ^
  symbol:   class Village
  location: class World
Main.java:68: error: cannot find symbol
		ArrayList<Village> toGrow = getGrownVillages();
		          ^
  symbol:   class Village
  location: class World
Main.java:69: error: cannot find symbol
		for (Village v : toGrow)
		     ^
  symbol:   class Village
  location: class World
Main.java:81: error: cannot find symbol
						Chunk cur;
						^
  symbol:   class Chunk
  location: class World
Main.java:84: error: cannot find symbol
						} catch (ChunkNotLoadedException e) {
						         ^
  symbol:   class ChunkNotLoadedException
  location: class World
Main.java:97: error: method does not override or implement a method from a supertype
	@Override
	^
Main.java:98: error: cannot find symbol
	public BufferedImage draw() { return draw(GraphicsMain.WIDTH/-2, GraphicsMain.HEIGHT/-2, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
	                                          ^
  symbol:   variable GraphicsMain
  location: class World
Main.java:98: error: cannot find symbol
	public BufferedImage draw() { return draw(GraphicsMain.WIDTH/-2, GraphicsMain.HEIGHT/-2, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
	                                                                 ^
  symbol:   variable GraphicsMain
  location: class World
Main.java:98: error: cannot find symbol
	public BufferedImage draw() { return draw(GraphicsMain.WIDTH/-2, GraphicsMain.HEIGHT/-2, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
	                                                                                         ^
  symbol:   variable GraphicsMain
  location: class World
Main.java:98: error: cannot find symbol
	public BufferedImage draw() { return draw(GraphicsMain.WIDTH/-2, GraphicsMain.HEIGHT/-2, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
	                                                                                                             ^
  symbol:   variable GraphicsMain
  location: class World
Main.java:99: error: cannot find symbol
	public BufferedImage draw(int x, int y) { return draw(x, y, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
	                                                            ^
  symbol:   variable GraphicsMain
  location: class World
Main.java:99: error: cannot find symbol
	public BufferedImage draw(int x, int y) { return draw(x, y, GraphicsMain.WIDTH, GraphicsMain.HEIGHT); }
	                                                                                ^
  symbol:   variable GraphicsMain
  location: class World
Main.java:113: error: cannot find symbol
		for (int x = (int) ((x0-.0)/Chunk.getPixelLength()-0.5); x <= Math.ceil(((double)x0+width)/Chunk.getPixelLength()); ++x)
		                            ^
  symbol:   variable Chunk
  location: class World
Main.java:113: error: cannot find symbol
		for (int x = (int) ((x0-.0)/Chunk.getPixelLength()-0.5); x <= Math.ceil(((double)x0+width)/Chunk.getPixelLength()); ++x)
		                                                                                           ^
  symbol:   variable Chunk
  location: class World
Main.java:115: error: cannot find symbol
			for (int y = (int) ((y0-.0)/Chunk.getPixelLength()-0.5); y <= Math.ceil(((double)y0+height)/Chunk.getPixelLength()); ++y)
			                            ^
  symbol:   variable Chunk
  location: class World
Main.java:115: error: cannot find symbol
			for (int y = (int) ((y0-.0)/Chunk.getPixelLength()-0.5); y <= Math.ceil(((double)y0+height)/Chunk.getPixelLength()); ++y)
			                                                                                            ^
  symbol:   variable Chunk
  location: class World
Main.java:117: error: cannot find symbol
				Chunk c;
				^
  symbol:   class Chunk
  location: class World
Main.java:120: error: cannot find symbol
				} catch (ChunkNotLoadedException e) {
				         ^
  symbol:   class ChunkNotLoadedException
  location: class World
Main.java:124: error: cannot find symbol
				int cScreenX = (int)((x-0.5)*Chunk.getPixelLength()-x0), cScreenY = (int)((y-0.5)*Chunk.getPixelLength()-y0);
				                             ^
  symbol:   variable Chunk
  location: class World
Main.java:124: error: cannot find symbol
				int cScreenX = (int)((x-0.5)*Chunk.getPixelLength()-x0), cScreenY = (int)((y-0.5)*Chunk.getPixelLength()-y0);
				                                                                                  ^
  symbol:   variable Chunk
  location: class World
Main.java:125: error: cannot find symbol
				if (!(cScreenX <= width && cScreenX+Chunk.getPixelLength() >= 0 && cScreenY <= width && cScreenY+Chunk.getPixelLength() >= 0)) //Check that shouldn't fail!
				                                    ^
  symbol:   variable Chunk
  location: class World
Main.java:125: error: cannot find symbol
				if (!(cScreenX <= width && cScreenX+Chunk.getPixelLength() >= 0 && cScreenY <= width && cScreenY+Chunk.getPixelLength() >= 0)) //Check that shouldn't fail!
				                                                                                                 ^
  symbol:   variable Chunk
  location: class World
Main.java:130: error: cannot find symbol
				gI.drawImage(cI, cScreenX, cScreenY, Chunk.getPixelLength(), Chunk.getPixelLength(), null);
				                                     ^
  symbol:   variable Chunk
  location: class World
Main.java:130: error: cannot find symbol
				gI.drawImage(cI, cScreenX, cScreenY, Chunk.getPixelLength(), Chunk.getPixelLength(), null);
				                                                             ^
  symbol:   variable Chunk
  location: class World
Main.java:137: error: cannot find symbol
		ArrayList<Village> villages = getVillages();
		          ^
  symbol:   class Village
  location: class World
Main.java:138: error: cannot find symbol
		for (Village v : villages)
		     ^
  symbol:   class Village
  location: class World
Main.java:140: error: cannot find symbol
			for (Villager villager : v.getPopulation())
			     ^
  symbol:   class Villager
  location: class World
Main.java:142: error: cannot find symbol
				double vAbsX = villager.getRelativeX()+(v.getX()-screenX0+0.5)*Chunk.lengthOfChunk-0.5, vAbsY = villager.getRelativeY()+(v.getY()-screenY0+0.5)*Chunk.lengthOfChunk-0.5;
				                                                               ^
  symbol:   variable Chunk
  location: class World
Main.java:142: error: cannot find symbol
				double vAbsX = villager.getRelativeX()+(v.getX()-screenX0+0.5)*Chunk.lengthOfChunk-0.5, vAbsY = villager.getRelativeY()+(v.getY()-screenY0+0.5)*Chunk.lengthOfChunk-0.5;
				                                                                                                                                                ^
  symbol:   variable Chunk
  location: class World
Main.java:150: error: cannot find symbol
		ArrayList<Village> villages = getVillages();
		          ^
  symbol:   class Village
  location: class World
Main.java:151: error: cannot find symbol
		ArrayList<Village> grownVillages = new ArrayList<Village>();
		          ^
  symbol:   class Village
  location: class World
Main.java:151: error: cannot find symbol
		ArrayList<Village> grownVillages = new ArrayList<Village>();
		                                                 ^
  symbol:   class Village
  location: class World
Main.java:164: error: cannot find symbol
		ArrayList<Chunk> grownVillageChunks = new ArrayList<Chunk>();
		          ^
  symbol:   class Chunk
  location: class World
Main.java:164: error: cannot find symbol
		ArrayList<Chunk> grownVillageChunks = new ArrayList<Chunk>();
		                                                    ^
  symbol:   class Chunk
  location: class World
Main.java:167: error: cannot find symbol
		for (Chunk c : chunks)
		     ^
  symbol:   class Chunk
  location: class World
Main.java:180: error: cannot find symbol
		ArrayList<Village> villages = new ArrayList<Village>();
		          ^
  symbol:   class Village
  location: class World
Main.java:180: error: cannot find symbol
		ArrayList<Village> villages = new ArrayList<Village>();
		                                            ^
  symbol:   class Village
  location: class World
Main.java:185: error: cannot find symbol
		for (Chunk c : chunks)
		     ^
  symbol:   class Chunk
  location: class World
Main.java:198: error: cannot find symbol
		ArrayList<Chunk> villageChunks = new ArrayList<Chunk>();
		          ^
  symbol:   class Chunk
  location: class World
Main.java:198: error: cannot find symbol
		ArrayList<Chunk> villageChunks = new ArrayList<Chunk>();
		                                               ^
  symbol:   class Chunk
  location: class World
Main.java:201: error: cannot find symbol
		for (Chunk c : chunks)
		     ^
  symbol:   class Chunk
  location: class World
Main.java:215: error: cannot find symbol
		for (Chunk c : chunks)
		     ^
  symbol:   class Chunk
  location: class World
Main.java:227: error: cannot find symbol
		throw new ChunkNotLoadedException();
		          ^
  symbol:   class ChunkNotLoadedException
  location: class World
62 errors
stdout
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Standard output is empty
https://ideone.com/n3j9yr
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
secret

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