Prepare for terrain

src/engine/InterestManagement/HeightMap.java

@@ -36,10 +36,7 @@ public class HeightMap {
 
     public static final HashMap<Integer, HeightMap> heightmapByLoadNum = new HashMap<>();
 
-    public static final HashMap<Integer, byte[][]> _pixelData = new HashMap<>();
-
-    // Heightmap data for all zones.
-    public static float SCALEVALUE = 1.0f / 255;
+    public static final HashMap<Integer, short[][]> _pixelData = new HashMap<>();
 
     // Bootstrap Tracking
     public static int heightMapsCreated = 0;
@@ -52,16 +49,17 @@ public class HeightMap {
     public final int fullExtentsY;
     public final int zoneLoadID;
     public BufferedImage heightmapImage;
-    public float bucketWidthX;
-    public float bucketWidthY;
+    public float cell_size_x;
+    public float cell_size_y;
     public float seaLevel = 0;
-    public int[][] pixelColorValues;
-    public int bucketCountX;
-    public int bucketCountY;
-
+    public short[][] pixelColorValues;
+    public int cell_count_x;
+    public int cell_count_y;
     public float zone_minBlend;
     public float zone_maxBlend;
 
+    public float terrain_scale;
+
     public HeightMap(ResultSet rs) throws SQLException {
 
         this.heightMapID = rs.getInt("heightMapID");
@@ -97,11 +95,13 @@ public class HeightMap {
 
         // Calculate the data we do not load from table
 
-        bucketCountX = this.heightmapImage.getWidth() - 1;
-        this.bucketWidthX = this.fullExtentsX / (float) bucketCountX;
+        this.cell_count_x = this.heightmapImage.getWidth() - 1;
+        this.cell_size_x = this.fullExtentsX / (float) cell_count_x;
 
-        bucketCountY = this.heightmapImage.getHeight() - 1;
-        this.bucketWidthY = this.fullExtentsY / (float) bucketCountY;
+        this.cell_count_y = this.heightmapImage.getHeight() - 1;
+        this.cell_size_y = this.fullExtentsY / (float) cell_count_y;
+
+        this.terrain_scale = this.maxHeight / 255f;
 
         // Generate pixel array from image data
 
@@ -133,10 +133,10 @@ public class HeightMap {
 
         // Calculate the data we do not load from table
 
-        this.bucketWidthX = halfExtentsX;
-        this.bucketWidthY = halfExtentsY;
+        this.cell_size_x = halfExtentsX;
+        this.cell_size_y = halfExtentsY;
 
-        this.pixelColorValues = new int[this.fullExtentsX][this.fullExtentsY];
+        this.pixelColorValues = new short[this.fullExtentsX][this.fullExtentsY];
 
         for (int y = 0; y < this.fullExtentsY; y++) {
             for (int x = 0; x < this.fullExtentsX; x++) {
@@ -144,8 +144,9 @@ public class HeightMap {
             }
         }
 
-        bucketCountX = this.pixelColorValues.length - 1;
-        bucketCountY = this.pixelColorValues[0].length - 1;
+        cell_count_x = this.pixelColorValues.length - 1;
+        cell_count_y = this.pixelColorValues[0].length - 1;
+        this.terrain_scale = this.maxHeight / 255f;
     }
 
     public HeightMap(Zone zone) {
@@ -166,10 +167,10 @@ public class HeightMap {
 
         // Calculate the data we do not load from table
 
-        this.bucketWidthX = halfExtentsX;
-        this.bucketWidthY = halfExtentsY;
+        this.cell_size_x = halfExtentsX;
+        this.cell_size_y = halfExtentsY;
 
-        this.pixelColorValues = new int[this.fullExtentsX][this.fullExtentsY];
+        this.pixelColorValues = new short[this.fullExtentsX][this.fullExtentsY];
 
         for (int y = 0; y < this.fullExtentsY; y++) {
             for (int x = 0; x < this.fullExtentsX; x++) {
@@ -177,8 +178,9 @@ public class HeightMap {
             }
         }
 
-        bucketCountX = this.pixelColorValues.length - 1;
-        bucketCountY = this.pixelColorValues[0].length - 1;
+        cell_count_x = this.pixelColorValues.length - 1;
+        cell_count_y = this.pixelColorValues[0].length - 1;
+        this.terrain_scale = this.maxHeight / 255f;
     }
 
     public static void GeneratePlayerCityHeightMap() {
@@ -239,13 +241,13 @@ public class HeightMap {
 
     }
 
-
     public static float getWorldHeight(Vector3fImmutable worldLoc) {
 
         Zone currentZone = ZoneManager.findSmallestZone(worldLoc);
 
         if (currentZone == null)
             return 0;
+
         return getWorldHeight(currentZone, worldLoc);
 
     }
@@ -260,12 +262,6 @@ public class HeightMap {
 
         HeightMap.GeneratePlayerCityHeightMap();
 
-        // Clear all heightmap image data as it's no longer needed.
-
-        for (HeightMap heightMap : HeightMap.heightmapByLoadNum.values()) {
-            heightMap.heightmapImage = null;
-        }
-
         Logger.info(HeightMap.heightmapByLoadNum.size() + " Heightmaps cached.");
 
         // Load pixel data for heightmaps
@@ -282,13 +278,13 @@ public class HeightMap {
                         // Generate pixel data for this heightmap.  RPG channels are all the same
                         // in this greyscale TGA heightmap.  We will choose red.
 
-                        byte[][] colorData = new byte[heightmapImage.getWidth()][heightmapImage.getHeight()];
+                        short[][] colorData = new short[heightmapImage.getWidth()][heightmapImage.getHeight()];
 
                         for (int y = 0; y < heightmapImage.getHeight(); y++)
                             for (int x = 0; x < heightmapImage.getWidth(); x++) {
 
                                 Color color = new Color(heightmapImage.getRGB(x, y));
-                                colorData[x][y] = (byte) color.getRed();
+                                colorData[x][y] = (short) color.getRed();
                             }
 
                         // Insert color data into lookup table
@@ -315,13 +311,13 @@ public class HeightMap {
 
         // Generate altitude lookup table for this heightmap
 
-        heightMap.pixelColorValues = new int[heightMap.heightmapImage.getWidth()][heightMap.heightmapImage.getHeight()];
+        heightMap.pixelColorValues = new short[heightMap.heightmapImage.getWidth()][heightMap.heightmapImage.getHeight()];
 
         for (int y = 0; y < heightMap.heightmapImage.getHeight(); y++) {
             for (int x = 0; x < heightMap.heightmapImage.getWidth(); x++) {
 
                 color = new Color(heightMap.heightmapImage.getRGB(x, y));
-                heightMap.pixelColorValues[x][y] = color.getRed();
+                heightMap.pixelColorValues[x][y] = (short) color.getRed();
             }
         }
 
@@ -329,28 +325,31 @@ public class HeightMap {
 
     public Vector2f getGridSquare(Vector2f zoneLoc) {
 
-        // Clamp values.
+        float xBucket = zoneLoc.x / this.cell_size_x;
+        float yBucket = zoneLoc.y / this.cell_size_y;
 
-        float xBucket = zoneLoc.x / this.bucketWidthX;
-        float yBucket = zoneLoc.y / this.bucketWidthY;
+        // Clamp values when standing directly on max pole
 
-        if (xBucket >= this.bucketCountX)
+        if (xBucket >= this.cell_count_x)
             xBucket = xBucket - 1;
 
-        if (yBucket >= this.bucketCountY)
+        if (yBucket >= this.cell_count_y)
             yBucket = xBucket - 1;
 
         return new Vector2f(xBucket, yBucket);
     }
 
-    public float getInterpolatedTerrainHeight(Vector2f zoneLoc) {
+    public float getInterpolatedTerrainHeight(Vector2f terrainLoc) {
 
         float interpolatedHeight;
 
-        Vector2f gridSquare = getGridSquare(zoneLoc);
+        Vector2f gridSquare = getGridSquare(terrainLoc);
 
-        int gridX = (int) gridSquare.x;
-        int gridY = (int) gridSquare.y;
+        int gridX = (int) Math.floor(gridSquare.x);
+        int gridY = (int) Math.floor(gridSquare.y);
+
+        float offsetX = gridSquare.x % 1;
+        float offsetY = gridSquare.y % 1;
 
         //get 4 surrounding vertices from the pixel array.
 
@@ -366,15 +365,12 @@ public class HeightMap {
 
         // Interpolate between the 4 vertices
 
-        float offsetX = (gridSquare.x - gridX);
-        float offsetY = gridSquare.y - gridY;
-
         interpolatedHeight = topRightHeight * (1 - offsetY) * (offsetX);
         interpolatedHeight += (bottomRightHeight * offsetY * offsetX);
         interpolatedHeight += (bottomLeftHeight * (1 - offsetX) * offsetY);
         interpolatedHeight += (topLeftHeight * (1 - offsetX) * (1 - offsetY));
 
-        interpolatedHeight *= (float) this.maxHeight * SCALEVALUE;  // Scale height
+        interpolatedHeight *= this.terrain_scale; // Scale height
 
         return interpolatedHeight;
     }

src/engine/devcmd/cmds/ZoneInfoCmd.java

@@ -93,9 +93,9 @@ public class ZoneInfoCmd extends AbstractDevCmd {
         if (zone.getHeightMap() != null) {
             output += "HeightMap ID: " + zone.getHeightMap().heightMapID;
             output += newline;
-            output += "Bucket Width X : " + zone.getHeightMap().bucketWidthX;
+            output += "Bucket Width X : " + zone.getHeightMap().cell_size_x;
             output += newline;
-            output += "Bucket Width Y : " + zone.getHeightMap().bucketWidthY;
+            output += "Bucket Width Y : " + zone.getHeightMap().cell_size_y;
 
         }
         output += "radius: x: " + zone.bounds.getHalfExtents().x + ", z: " + zone.bounds.getHalfExtents().y;

src/engine/server/world/WorldServer.java

@@ -468,7 +468,7 @@ public class WorldServer {
 
 		for (Zone zone : ZoneManager.getAllZones()) {
 			if (zone.getHeightMap() != null) {
-				if (zone.getHeightMap().bucketWidthX == 0) {
+				if (zone.getHeightMap().cell_size_x == 0) {
 					System.out.println("Zone load num: " + zone.template + " has no bucket width");
 				}
 			}