feat: player jumps like a frog!!! (FROGartha reference) + player state

1 files changed, 37 insertions, 0 deletions

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());
+    }
 }