Add support for Context global objects

api/src/main/java/com/bartlomiejpluta/base/api/context/Context.java

@@ -85,6 +85,46 @@ public interface Context extends Updatable, Renderable, Disposable {
 
    <E extends Event> void removeEventListener(EventType<E> type, Consumer<E> listener);
 
+   void putGlobal(String key, Object value);
+
+   void putGlobal(String key, boolean value);
+
+   void putGlobal(String key, byte value);
+
+   void putGlobal(String key, short value);
+
+   void putGlobal(String key, int value);
+
+   void putGlobal(String key, long value);
+
+   void putGlobal(String key, float value);
+
+   void putGlobal(String key, double value);
+
+   void putGlobal(String key, char value);
+
+   Object getGlobal(String key);
+
+   <T> T getGlobal(String key, Class<T> type);
+
+   boolean getBooleanGlobal(String key);
+
+   byte getByteGlobal(String key);
+
+   short getShortGlobal(String key);
+
+   int getIntGlobal(String key);
+
+   long getLongGlobal(String key);
+
+   float getFloatGlobal(String key);
+
+   double getDoubleGlobal(String key);
+
+   char getCharGlobal(String key);
+
+   String getStringGlobal(String key);
+
    void init(Screen screen, Input input, Camera camera);
 
    void input(Input input);

engine/src/main/java/com/bartlomiejpluta/base/engine/context/model/DefaultContext.java

@@ -43,13 +43,16 @@ import lombok.extern.slf4j.Slf4j;
 
 import java.sql.Connection;
 import java.sql.SQLException;
+import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
 import java.util.function.Consumer;
 
 @Slf4j
 @Builder
 public class DefaultContext implements Context {
+   private final Map<String, Object> globals = new HashMap<>();
 
    @NonNull
    private final GameEngine engine;
@@ -286,6 +289,106 @@ public class DefaultContext implements Context {
       eventHandler.removeListener(type, listener);
    }
 
+   @Override
+   public void putGlobal(String key, Object value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, boolean value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, byte value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, short value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, int value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, long value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, float value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, double value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public void putGlobal(String key, char value) {
+      globals.put(key, value);
+   }
+
+   @Override
+   public Object getGlobal(String key) {
+      return globals.get(key);
+   }
+
+   @Override
+   public <T> T getGlobal(String key, Class<T> type) {
+      return type.cast(globals.get(key));
+   }
+
+   @Override
+   public boolean getBooleanGlobal(String key) {
+      return (boolean) globals.get(key);
+   }
+
+   @Override
+   public byte getByteGlobal(String key) {
+      return (byte) globals.get(key);
+   }
+
+   @Override
+   public short getShortGlobal(String key) {
+      return (short) globals.get(key);
+   }
+
+   @Override
+   public int getIntGlobal(String key) {
+      return (int) globals.get(key);
+   }
+
+   @Override
+   public long getLongGlobal(String key) {
+      return (long) globals.get(key);
+   }
+
+   @Override
+   public float getFloatGlobal(String key) {
+      return (float) globals.get(key);
+   }
+
+   @Override
+   public double getDoubleGlobal(String key) {
+      return (double) globals.get(key);
+   }
+
+   @Override
+   public char getCharGlobal(String key) {
+      return (char) globals.get(key);
+   }
+
+   @Override
+   public String getStringGlobal(String key) {
+      return (String) globals.get(key);
+   }
+
    @Override
    public void input(Input input) {
       gameRunner.input(input);