place buildings along roads

assets/Data/game/structure.json

@@ -5,9 +5,9 @@
             "displayName" : "Default House",
             "fabPath" : "Data/fab/defaultHouse.fab",
             "dimensions" : {
-                "x" : 100,
+                "x" : 5,
-                "y" : 100,
+                "y" : 5,
-                "z" : 100
+                "z" : 5
             },
             "placementOffset" : {
                 "x" : 0,

docs/src/progress/renderertodo.md

@@ -1922,6 +1922,7 @@ Roads block content generation
 Properly layout roads along town points in TownLayout
 Town generates a structure -- scaffolding for doing it across roads
 Structures create foundations in terrain voxels
+Place buildings along roads
 
 
 

src/main/java/electrosphere/server/datacell/gridded/GriddedDataCellManager.java

@@ -40,6 +40,7 @@ import electrosphere.server.datacell.interfaces.VoxelCellManager;
 import electrosphere.server.datacell.physics.PhysicsDataCell;
 import electrosphere.server.entity.ServerContentManager;
 import electrosphere.server.entity.serialization.ContentSerialization;
+import electrosphere.server.macro.MacroDataUpdater;
 import electrosphere.server.macro.spatial.MacroObject;
 import electrosphere.server.pathfinding.recast.PathingProgressiveData;
 import electrosphere.server.pathfinding.voxel.VoxelPathfinder;
@@ -362,6 +363,7 @@ public class GriddedDataCellManager implements DataCellManager, VoxelCellManager
             worldPos.z * ServerTerrainChunk.CHUNK_PLACEMENT_OFFSET
         );
 
+        MacroDataUpdater.update(parent, parent.getMacroData(), realPos);
         BlockChunkData blockChunkData = parent.getServerWorldData().getServerBlockManager().getChunk(worldPos.x, worldPos.y, worldPos.z);
         ServerTerrainChunk terrainChunk = parent.getServerWorldData().getServerTerrainManager().getChunk(worldPos.x, worldPos.y, worldPos.z, ServerChunkCache.STRIDE_FULL_RES);
 
@@ -813,6 +815,7 @@ public class GriddedDataCellManager implements DataCellManager, VoxelCellManager
             ServerEntityUtils.destroyEntity(blockEntity);
         }
 
+        MacroDataUpdater.update(parent, parent.getMacroData(), realPos);
         this.generationService.submit(() -> {
             try {
                 BlockChunkData blockChunkData = realm.getServerWorldData().getServerBlockManager().getChunk(worldPos.x, worldPos.y, worldPos.z);

src/main/java/electrosphere/server/macro/MacroData.java

@@ -288,6 +288,7 @@ public class MacroData {
      * @param structure The structure
      */
     public void addStructure(VirtualStructure structure){
+        structure.setId(structures.size());
         structures.add(structure);
     }
 

src/main/java/electrosphere/server/macro/structure/VirtualStructure.java

@@ -138,6 +138,14 @@ public class VirtualStructure implements MacroAreaObject {
     public int getId(){
         return id;
     }
+
+    /**
+     * Sets the id of this structure
+     * @param id The id
+     */
+    public void setId(int id){
+        this.id = id;
+    }
     
     
 }

src/main/java/electrosphere/server/macro/town/TownLayout.java

@@ -88,33 +88,103 @@ public class TownLayout {
         scanPoint.set(townCenter).add(0,0,-TOWN_LAYOUT_SCALER);
         Vector3d downNodeLoc = TownLayout.getTownCenter(realm, scanPoint);
 
+        //
+        //generate roads
+        Road newRoad;
+
         //up-facing road
-        Road.createRoad(macroData, upNodeLoc, centerNodeLoc);
+        newRoad = Road.createRoad(macroData, upNodeLoc, centerNodeLoc);
-        //generate structures along the road
+        TownLayout.generateStructuresAlongRoad(realm, town, newRoad, allowedStructures);
-        StructureData structureData = allowedStructures.get(0);
-        Vector3d pos = new Vector3d(centerNodeLoc).add(10,0,10);
-        pos.y = realm.getServerWorldData().getServerTerrainManager().getElevation(pos);
-        AABBd aabb = new AABBd();
-        aabb.setMin(pos);
-        aabb.setMax(new Vector3d(pos).add(structureData.getDimensions()));
-        if(!macroData.intersectsStruct(aabb)){
-            VirtualStructure struct = VirtualStructure.createStructure(macroData, structureData, pos);
-            town.addStructure(struct);
-        }
 
         //right-facing road
-        Road.createRoad(macroData, rightNodeLoc, centerNodeLoc);
+        newRoad = Road.createRoad(macroData, rightNodeLoc, centerNodeLoc);
+        TownLayout.generateStructuresAlongRoad(realm, town, newRoad, allowedStructures);
 
         //left-facing road
-        Road.createRoad(macroData, leftNodeLoc, centerNodeLoc);
+        newRoad = Road.createRoad(macroData, leftNodeLoc, centerNodeLoc);
+        TownLayout.generateStructuresAlongRoad(realm, town, newRoad, allowedStructures);
 
         //down-facing road
-        Road.createRoad(macroData, downNodeLoc, centerNodeLoc);
+        newRoad = Road.createRoad(macroData, downNodeLoc, centerNodeLoc);
-
+        TownLayout.generateStructuresAlongRoad(realm, town, newRoad, allowedStructures);
 
         town.setResolution(Town.TOWN_RES_MAX);
     }
 
+    /**
+     * Generates structures along a road
+     * @param realm The realm
+     * @param town The town
+     * @param road The road
+     * @param allowedStructures The list of allowed structure types
+     */
+    private static void generateStructuresAlongRoad(Realm realm, Town town, Road road, List<StructureData> allowedStructures){
+        MacroData macroData = realm.getMacroData();
+
+        //get values to scan along
+        Vector3d startPoint = road.getPoint1();
+        Vector3d endPoint = road.getPoint2();
+        Vector3d dir = new Vector3d(endPoint).sub(startPoint).normalize();
+        int len = (int)startPoint.distance(endPoint);
+
+        //determine if it's primarily north-south or east-west
+        boolean isNorthSouth = true;
+        if(Math.abs(endPoint.x - startPoint.x) > Math.abs(endPoint.z - startPoint.z)){
+            isNorthSouth = false;
+        } else {
+            isNorthSouth = true;
+        }
+
+        //offset applied to the scan location to not place it on top of the road
+        Vector3d placementOffset = null;
+        if(isNorthSouth){
+            placementOffset = new Vector3d(road.getRadius() + 10,0,0);
+        } else {
+            placementOffset = new Vector3d(0,0,road.getRadius() + 10);
+        }
+
+        //the position to try at
+        Vector3d currPos = new Vector3d();
+        AABBd aabb = new AABBd();
+
+        //the type of structure to place
+        StructureData structureData = allowedStructures.get(0);
+
+        //scan along the length of the road
+        for(int i = 0; i < len; i++){
+            //solve terrain position to place
+            currPos.set(dir).mul(i).add(startPoint).add(placementOffset);
+            currPos.y = realm.getServerWorldData().getServerTerrainManager().getElevation(currPos);
+            //apply structure placement offset
+            currPos.add(structureData.getPlacementOffset());
+            //update aabb
+            aabb.setMin(currPos);
+            aabb.setMax(new Vector3d(currPos).add(structureData.getDimensions()));
+            if(!macroData.intersectsStruct(aabb)){
+                VirtualStructure struct = VirtualStructure.createStructure(macroData, structureData, currPos);
+                town.addStructure(struct);
+                //TODO: once have successfully placed this structure type, pick a new one to place
+            }
+        }
+
+        //scan along the length of the road
+        for(int i = 0; i < len; i++){
+            //solve terrain position to place
+            currPos.set(dir).mul(i).add(startPoint).sub(placementOffset).sub(structureData.getDimensions().x,0,structureData.getDimensions().z);
+            currPos.y = realm.getServerWorldData().getServerTerrainManager().getElevation(currPos);
+            //apply structure placement offset
+            currPos.add(structureData.getPlacementOffset());
+            //update aabb
+            aabb.setMin(currPos);
+            aabb.setMax(new Vector3d(currPos).add(structureData.getDimensions()));
+            if(!macroData.intersectsStruct(aabb)){
+                VirtualStructure struct = VirtualStructure.createStructure(macroData, structureData, currPos);
+                town.addStructure(struct);
+                //TODO: once have successfully placed this structure type, pick a new one to place
+            }
+        }
+    }
+
     /**
      * Clamps the scan point to the closest town center point
      * @param realm The realm

src/main/java/electrosphere/server/physics/terrain/generation/ProceduralChunkGenerator.java

@@ -57,6 +57,11 @@ public class ProceduralChunkGenerator implements ChunkGenerator {
      */
     public static final int SURFACE_VOXEL_WIDTH = 2;
 
+    /**
+     * The width of the foundation generated underneath structures
+     */
+    public static final int VIRTUAL_STRUCTURE_FOUNDATION_WIDTH = 2;
+
     /**
      * Tag for the test generator
      */
@@ -291,7 +296,7 @@ public class ProceduralChunkGenerator implements ChunkGenerator {
                 if(realX >= aabb.minX && realX <= aabb.maxX && realZ >= aabb.minZ && realZ <= aabb.maxZ){
                     //check if within foundation range
                     double vertDist = aabb.minY - realY;
-                    if(vertDist > 0 && vertDist < 2){
+                    if(vertDist > 0 && vertDist < VIRTUAL_STRUCTURE_FOUNDATION_WIDTH){
                         voxel.type = 1;
                         voxel.weight = 1;
                         rVal = true;