initial

src/main/java/de/welterde/em/CollisionException.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em;
+
+/**
+ *
+ * @author welterde
+ */
+public class CollisionException extends RuntimeException {
+
+    /**
+     * Creates a new instance of <code>CollisionException</code> without detail
+     * message.
+     */
+    public CollisionException() {
+    }
+
+    /**
+     * Constructs an instance of <code>CollisionException</code> with the
+     * specified detail message.
+     *
+     * @param msg the detail message.
+     */
+    public CollisionException(String msg) {
+        super(msg);
+    }
+}

src/main/java/de/welterde/em/Exotic_matter.java

@@ -0,0 +1,16 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ */
+
+package de.welterde.em;
+
+/**
+ *
+ * @author welterde
+ */
+public class Exotic_matter {
+
+    public static void main(String[] args) {
+        System.out.println("Hello World!");
+    }
+}

src/main/java/de/welterde/em/data/BuildingManager.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ * Manage presence of rooms, walls, corridors, etc.
+ * @author welterde
+ */
+public class BuildingManager {
+    
+}

src/main/java/de/welterde/em/data/CoordVector.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public record CoordVector(short dz, short dx, short dy) {
+
+}

src/main/java/de/welterde/em/data/Corridor.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public final class Corridor extends LocationBase implements Location {
+    
+}

src/main/java/de/welterde/em/data/CounterName.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public enum CounterName {
+    LOCATION_IDX,
+    ENTITY_IDX,
+}

src/main/java/de/welterde/em/data/Direction.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public enum Direction {
+    EAST,
+    WEST,
+    NORTH,
+    SOUTH,
+    UP,
+    DOWN;
+    
+    public static final CoordVector EAST_VEC = new CoordVector((short) 0, (short) 1, (short) 0);
+    public static final CoordVector WEST_VEC = new CoordVector((short) 0, (short) -1, (short) 0);
+    public static final CoordVector NORTH_VEC = new CoordVector((short) 0, (short) 0, (short) 1);
+    public static final CoordVector SOUTH_VEC = new CoordVector((short) 0, (short) 0, (short) -1);
+    public static final CoordVector UP_VEC = new CoordVector((short) 1, (short) 0, (short) 0);
+    public static final CoordVector DOWN_VEC = new CoordVector((short) -1, (short) 0, (short) 0);
+    
+    public CoordVector getNormVector() {
+        return switch(this) {
+            case EAST -> EAST_VEC;
+            case WEST -> WEST_VEC;
+            case NORTH -> NORTH_VEC;
+            case SOUTH -> SOUTH_VEC;
+            case UP -> UP_VEC;
+            case DOWN -> DOWN_VEC;
+        };
+    }
+}

src/main/java/de/welterde/em/data/Entity.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public interface Entity {
+    
+    /**
+     * Space occupied by entity.
+     * In case of small object with no bounding box return null.
+     * 
+     * @return 
+     */
+    public Object getBoundingBox();
+    
+    /**
+     * Get current location of object.
+     * 
+     * @return 
+     */
+    public Location getLocation();
+    
+    public boolean isMovable();
+    
+    public MovementStatus getMovementStatus();
+}

src/main/java/de/welterde/em/data/EntityBase.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public abstract class EntityBase implements Entity {
+    
+}

src/main/java/de/welterde/em/data/EntityPosMgr.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ * Manages position and occupied tiles by entities
+ * 
+ * @author welterde
+ */
+public class EntityPosMgr {
+    protected final OutpostMap ctx;
+    
+    public EntityPosMgr(OutpostMap ctx) {
+        this.ctx = ctx;
+    }
+    
+    public void occupyTile(Tile t, Entity e) {
+        // do something
+    }
+}

src/main/java/de/welterde/em/data/EntityType.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public enum EntityType {
+    
+    SMALL_ITEM,
+    LARGE_ITEM,
+    
+    MACHINERY,
+    FURNITURE,
+}

src/main/java/de/welterde/em/data/Location.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public sealed interface Location permits LocationBase, Corridor, Room {
+    public short getSecurityLevel();
+    public Location setSecurityLevel(short newLevel);
+}

src/main/java/de/welterde/em/data/LocationBase.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public abstract class LocationBase implements Location {
+    
+    protected short securityLevel;
+    
+    @Override
+    public short getSecurityLevel() {
+        return this.securityLevel;
+    }
+    
+    @Override
+    public Location setSecurityLevel(short newLevel) {
+        this.securityLevel = newLevel;
+        return this;
+    }
+}

src/main/java/de/welterde/em/data/LocationManager.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ * Manages locations like rooms, corridors, sectors
+ * @author welterde
+ */
+public class LocationManager {
+    protected final OutpostMap ctx;
+    
+    public LocationManager(OutpostMap ctx) {
+        this.ctx = ctx;
+    }
+    
+    public Corridor buildCorridor(MapCoord startPos, Direction dir, short width, short height) {
+        var vec = dir.getNormVector();
+    }
+    
+}

src/main/java/de/welterde/em/data/MapCoord.java

@@ -0,0 +1,44 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Record.java to edit this template
+ */
+package de.welterde.em.data;
+
+/**
+ * z coordinate goes from 65km to 0, where ground-level is at 50km
+ * @author welterde
+ */
+public record MapCoord(int z, int x, int y) {
+
+    public MapCoord move(Direction dir) {
+        switch (dir) {
+            case EAST -> {
+                return new MapCoord(z, x + 1, y);
+            }
+            case WEST -> {
+                return new MapCoord(z, x - 1, y);
+            }
+            case NORTH -> {
+                return new MapCoord(z, x, y + 1);
+            }
+            case SOUTH -> {
+                return new MapCoord(z, x, y - 1);
+            }
+            case UP -> {
+                return new MapCoord(z - 1, x, y);
+            }
+            case DOWN -> {
+                return new MapCoord(z + 1, x, y);
+            }
+        }
+        return null;
+    }
+
+    public boolean isUnderground() {
+        return (z < 50000);
+    }
+
+    public MapCoord add(CoordVector v) {
+        return new MapCoord(z + v.dz(), x + v.dx(), y + v.dy());
+    }
+}

src/main/java/de/welterde/em/data/MovementStatus.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public enum MovementStatus {
+    /**
+     * Entity is fixed in place
+     */
+    FIXED,
+    STATIONARY,
+    MOVING
+}

src/main/java/de/welterde/em/data/OutpostMap.java

@@ -0,0 +1,57 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package de.welterde.em.data;
+
+import java.util.EnumMap;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ *
+ * @author welterde
+ */
+public class OutpostMap {
+    
+    protected final Map<MapCoord,Tile> tiles;
+    protected final Map<Integer, Location> locations;
+    protected final Map<Integer, Entity> entities;
+    protected final EntityPosMgr entityPosMgr;
+    protected final TerrainGen gen;
+    protected final EnumMap<CounterName, Integer> counters;
+    
+    public OutpostMap(TerrainGen gen) {
+        this.tiles = new HashMap<>();
+        this.locations = new HashMap<>();
+        this.entities = new HashMap<>();
+        this.counters = new EnumMap<>(CounterName.class);
+        this.gen = gen;
+        this.entityPosMgr = new EntityPosMgr(this);
+    }
+    
+    public Tile getTile(MapCoord c) {
+        if(!this.tiles.containsKey(c)) {
+            // default to the terrain generator
+            return this.gen.generateTile(this, c);
+        } else {
+            return this.tiles.get(c);
+        }
+    }
+    
+    public void updateTile(MapCoord c, Tile upd) {
+        this.tiles.put(c, upd);
+    }
+    
+    public int incrCounter(CounterName n) {
+        synchronized(this.counters) {
+            var nextVal = this.counters.get(n) + 1;
+            this.counters.put(n, nextVal);
+            return nextVal;
+        }
+    }
+    
+    public void occupyTile(Tile t, Entity e) {
+        this.entityPosMgr.occupyTile(t, e);
+    }
+}

src/main/java/de/welterde/em/data/Room.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public final class Room extends LocationBase implements Location {
+    
+}

src/main/java/de/welterde/em/data/RoomCoord.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public record RoomCoord(short sector, short level, short corridor, short room) {
+
+}

src/main/java/de/welterde/em/data/TerrainGen.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public interface TerrainGen<X> {
+    public Tile generateTile(X ctx, MapCoord c);
+}

src/main/java/de/welterde/em/data/Tile.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public interface Tile {
+    public TileType getType();
+    
+    // get Room/Corridor/.. if there is any
+    public Location getLocation();
+    
+    public Tile setLocation(Location loc);
+    
+    // get next tile in specified direction
+    public Tile next(Direction dir);
+    
+    public boolean isWalkable();
+    
+    public boolean isBuildable();
+    
+    /**
+     * Get entity occupying this tile if there is any
+     * 
+     * @return 
+     */
+    public Entity getEntity();
+    
+    public Tile occupy(Entity e);
+    
+}

src/main/java/de/welterde/em/data/TileImpl.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+import de.welterde.em.CollisionException;
+
+/**
+ *
+ * @author welterde
+ */
+public record TileImpl(OutpostMap ctx, MapCoord coord, TileType type, Location location, Entity occupator) implements Tile {
+
+    @Override
+    public TileType getType() {
+        return type;
+    }
+
+    @Override
+    public Location getLocation() {
+        return location;
+    }
+
+    @Override
+    public Tile setLocation(Location newLocation) {
+        Tile upd = new TileImpl(ctx, coord, type, newLocation, occupator);
+        ctx.updateTile(coord, upd);
+        return upd;
+    }
+
+    @Override
+    public Tile next(Direction dir) {
+        var nextCoord = coord.move(dir);
+        return this.ctx.getTile(nextCoord);
+    }
+
+    @Override
+    public boolean isWalkable() {
+        // this tile needs to be empty, the tile above needs to be empty
+        // and tile below needs to be solid
+        
+    }
+
+    @Override
+    public boolean isBuildable() {
+        // only check if this tile is available for building
+        // check if it is occupied already
+    }
+
+    @Override
+    public Entity getEntity() {
+        
+    }
+
+    @Override
+    public Tile occupy(Entity e) {
+        // if we are already occupied..
+        if(this.getEntity() != null)
+            throw new CollisionException();
+        
+        // in case object is fixed we will remember that
+        if(!e.isMovable()) {
+            Tile upd = new TileImpl(ctx, coord, type, location, e);
+            ctx.updateTile(coord, upd);
+            return upd;
+        } else {
+            ctx.occupyTile(this, e);
+        }
+    }
+}

src/main/java/de/welterde/em/data/TileType.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data;
+
+/**
+ *
+ * @author welterde
+ */
+public enum TileType {
+    // tile is fully filed with some material
+    FILLED,
+    // tile is fully unfilled/uninvolved
+    AIR,
+    CORRIDOR,
+    ROOM,
+    WALL,
+    DOOR,
+}

src/main/java/de/welterde/em/data/gen/BasicTerrainGen.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data.gen;
+
+import de.welterde.em.data.MapCoord;
+import de.welterde.em.data.OutpostMap;
+import de.welterde.em.data.TerrainGen;
+import de.welterde.em.data.Tile;
+import de.welterde.em.data.TileImpl;
+import de.welterde.em.data.TileType;
+
+/**
+ *
+ * @author welterde
+ */
+public class BasicTerrainGen implements TerrainGen<OutpostMap> {
+    
+    @Override
+    public Tile generateTile(OutpostMap ctx, MapCoord c) {
+        if(c.isUnderground()) {
+            // generate tile with filled material
+            return new TileImpl(ctx, c, TileType.FILLED, null, null);
+        } else {
+            return new TileImpl(ctx, c, TileType.AIR, null, null);
+        }
+    }
+    
+}

src/main/java/de/welterde/em/data/gen/OutpostGen.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.data.gen;
+
+/**
+ *
+ * @author welterde
+ */
+public class OutpostGen {
+    
+}

src/main/java/de/welterde/em/e/Employee.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.e;
+
+/**
+ *
+ * @author welterde
+ */
+public class Employee {
+    protected String name;
+    
+    
+    public Employee(String name) {
+        this.name = name;
+    }
+}

src/main/java/de/welterde/em/e/Skill.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.e;
+
+/**
+ *
+ * @author welterde
+ */
+public interface Skill {
+
+}

src/main/java/de/welterde/em/entity/EntityManager.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.entity;
+
+import de.welterde.em.data.OutpostMap;
+
+/**
+ *
+ * @author welterde
+ */
+public class EntityManager {
+    
+    protected final OutpostMap ctx;
+    
+    public EntityManager(OutpostMap ctx) {
+        this.ctx = ctx;
+    }
+}

src/main/java/de/welterde/em/entity/ItemBase.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.entity;
+
+import de.welterde.em.data.Entity;
+
+/**
+ *
+ * @author welterde
+ */
+public abstract class ItemBase implements Entity {
+    
+}

src/main/java/de/welterde/em/room/RoomType.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.room;
+
+/**
+ *
+ * @author welterde
+ */
+public enum RoomType {
+    LAB,
+    OFFICE,
+    COMPUTER_ROOM,
+}

src/main/java/de/welterde/em/w/City.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public class City {
+    
+}

src/main/java/de/welterde/em/w/Country.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public class Country {
+    
+}

src/main/java/de/welterde/em/w/Dimension.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public class Dimension {
+    
+}

src/main/java/de/welterde/em/w/DimensionType.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public enum DimensionType {
+    /**
+     * Our dimension or other dimension with nor particular features
+     */
+    BASE,
+    /**
+     * Endless backrooms
+     */
+    BACKROOMS,
+}

src/main/java/de/welterde/em/w/Org.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ * Organization
+ * @author welterde
+ */
+public class Org {
+    
+}

src/main/java/de/welterde/em/w/Outpost.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+import java.util.EnumSet;
+
+/**
+ *
+ * @author welterde
+ */
+public class Outpost {
+    protected final EnumSet<OutpostFlags> flags;
+    
+    public Outpost() {
+        this.flags = EnumSet.noneOf(OutpostFlags.class);
+    }
+}

src/main/java/de/welterde/em/w/OutpostFlags.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public enum OutpostFlags {
+    /**
+     * Traffic connection via rail
+     */
+    RAIL_CONNECTION,
+    BOAT_CONNECTION,
+    ROAD_CONNECTION,
+    AIR_CONNECTION,
+    
+    /**
+     * receives mail service from government
+     */
+    MAIL_SERVICE,
+    
+    /**
+     * Has outside connection for utilities like water, sewage, electricity
+     */
+    UTILITIES_CONNECTION;
+}

src/main/java/de/welterde/em/w/OutpostLocationType.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public enum OutpostLocationType {
+    INNER_CITY,
+    CITY_RESEARCH_PARK,
+    VILLAGE,
+    REMOTE_DESERT,
+    REMOTE_WOODS,
+    REMOTE_MOUNTAIN,
+    REMOTE_UNDERSEA;
+
+    public boolean nearPopulationCenter() {
+        return switch (this) {
+            case INNER_CITY, CITY_RESEARCH_PARK, VILLAGE ->
+                true;
+            default ->
+                false;
+        };
+    }
+}

src/main/java/de/welterde/em/w/World.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 welterde
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package de.welterde.em.w;
+
+/**
+ *
+ * @author welterde
+ */
+public class World {
+    
+}