3 files changed, 53 insertions, 2 deletions
diff --git a/server/src/main/java/kz/ilotterytea/frogartha/server/FrogarthaServer.java b/server/src/main/java/kz/ilotterytea/frogartha/server/FrogarthaServer.java
index e25dffd..c141bd9 100644
--- a/server/src/main/java/kz/ilotterytea/frogartha/server/FrogarthaServer.java
+++ b/server/src/main/java/kz/ilotterytea/frogartha/server/FrogarthaServer.java
@@ -2,6 +2,7 @@ package kz.ilotterytea.frogartha.server;
 
 import com.github.czyzby.websocket.serialization.impl.ManualSerializer;
 import kz.ilotterytea.frogartha.domain.Identity;
+import kz.ilotterytea.frogartha.domain.client.PlayerJumpAction;
 import kz.ilotterytea.frogartha.exceptions.PlayerKickException;
 import kz.ilotterytea.frogartha.utils.Logger;
 import kz.ilotterytea.frogartha.utils.SerializerUtils;
@@ -76,8 +77,13 @@ public class FrogarthaServer extends WebSocketServer {
                 throw PlayerKickException.internalServerError();
             }
 
-            if (obj instanceof Identity) ServerHandlers.handleIdentity(player, (Identity) obj);
-            else throw PlayerKickException.internalServerError();
+            if (obj instanceof Identity) {
+                ServerHandlers.handleIdentity(player, (Identity) obj);
+            } else if (obj instanceof PlayerJumpAction) {
+                ServerHandlers.handlePlayerJumpAction(player, (PlayerJumpAction) obj);
+            } else {
+                throw PlayerKickException.internalServerError();
+            }
         } catch (PlayerKickException e) {
             kickConnection(player, e);
         } catch (Exception e) {
diff --git a/server/src/main/java/kz/ilotterytea/frogartha/server/PlayerConnection.java b/server/src/main/java/kz/ilotterytea/frogartha/server/PlayerConnection.java
index d9326a6..8744e58 100644
--- a/server/src/main/java/kz/ilotterytea/frogartha/server/PlayerConnection.java
+++ b/server/src/main/java/kz/ilotterytea/frogartha/server/PlayerConnection.java
@@ -1,6 +1,7 @@
 package kz.ilotterytea.frogartha.server;
 
 import kz.ilotterytea.frogartha.domain.Identity;
+import kz.ilotterytea.frogartha.domain.PlayerState;
 import org.java_websocket.WebSocket;
 
 import java.sql.Timestamp;
@@ -11,6 +12,7 @@ public class PlayerConnection {
     private final int id;
     private final WebSocket connection;
     private Identity identity;
+    private PlayerState state;
 
     private final Timestamp connectedTimestamp;
 
@@ -21,6 +23,7 @@ public class PlayerConnection {
 
         this.connectedTimestamp = new Timestamp(System.currentTimeMillis());
         this.identity = null;
+        this.state = null;
     }
 
     public void send(Object object) {
@@ -50,6 +53,11 @@ public class PlayerConnection {
 
     public void setIdentity(Identity identity) {
         this.identity = identity;
+        if (state == null) state = new PlayerState();
+    }
+
+    public PlayerState getState() {
+        return state;
     }
 
     @Override
diff --git a/server/src/main/java/kz/ilotterytea/frogartha/server/ServerHandlers.java b/server/src/main/java/kz/ilotterytea/frogartha/server/ServerHandlers.java
index b50392f..44162ae 100644
--- a/server/src/main/java/kz/ilotterytea/frogartha/server/ServerHandlers.java
+++ b/server/src/main/java/kz/ilotterytea/frogartha/server/ServerHandlers.java
@@ -1,7 +1,12 @@
 package kz.ilotterytea.frogartha.server;
 
+import com.badlogic.gdx.math.Vector3;
+import kz.ilotterytea.frogartha.FrogarthaConstants;
 import kz.ilotterytea.frogartha.domain.Identity;
+import kz.ilotterytea.frogartha.domain.PlayerState;
+import kz.ilotterytea.frogartha.domain.client.PlayerJumpAction;
 import kz.ilotterytea.frogartha.domain.server.Acknowledge;
+import kz.ilotterytea.frogartha.events.PlayerJumpEvent;
 import kz.ilotterytea.frogartha.exceptions.PlayerKickException;
 import kz.ilotterytea.frogartha.utils.Logger;
 
@@ -22,4 +27,36 @@ public class ServerHandlers {
         player.send(new Acknowledge(Acknowledge.AcknowledgeCode.IDENTIFIED));
         log.log("Successfully identified {} for {}", identity, player);
     }
+
+    public static void handlePlayerJumpAction(PlayerConnection player, PlayerJumpAction action) {
+        PlayerState state = player.getState();
+
+        float nowTimestamp = System.currentTimeMillis() / 1000f;
+
+        if (state.getNextJumpTimestamp() > nowTimestamp) {
+            throw PlayerKickException.jumpSpam();
+        }
+
+        state.setNextJumpTimestamp(nowTimestamp + action.getJumpStrength());
+
+        // calculating start and end positions
+        Vector3 position = state.getPosition();
+        Vector3 startPosition = position.cpy();
+
+        float jumpDistance = action.getJumpStrength() * FrogarthaConstants.Player.JUMP_SPEED;
+        Vector3 d = new Vector3(state.getDirection()).sub(startPosition).nor();
+
+        Vector3 endPosition = new Vector3(
+            position.x + d.x * jumpDistance,
+            position.y,
+            position.z + d.z * jumpDistance
+        );
+
+        state.setPosition(endPosition.x, endPosition.y, endPosition.z);
+
+        player.send(new PlayerJumpEvent(
+            player.getId(), startPosition, endPosition, action.getJumpStrength()
+        ));
+        log.log("{} jumped from {} to {} with strength {}", player, startPosition, endPosition, action.getJumpStrength());
+    }
 }