Implement Custom Chase Camera for platforming gameplay.

src/mygame/appstate/RunLevel.java

@@ -28,6 +28,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import static mygame.Main.main;
+import mygame.camera.CustomChaseCamera;
 import mygame.control.NetworkPlayableCharacter;
 import mygame.control.PhysicsControl;
 import mygame.control.PlayableCharacter;
@@ -134,8 +135,11 @@ public class RunLevel extends BaseAppState
         
         //System.out.println("In here.,");
         
-        ChaseCamera chaseCam = new ChaseCamera(this.app.getCamera(), player, inputManager);
+        CustomChaseCamera chaseCam = new CustomChaseCamera(this.app.getCamera(), player, inputManager);
         chaseCam.setLookAtOffset(new Vector3f(0,2.5f,0));
+        chaseCam.setDefaultHorizontalRotation((float)Math.PI);
+        chaseCam.setSmoothMotion(false);
+        chaseCam.setTrailingEnabled(false);
         //this.app.getCamera().setFrustumPerspective(this.app.getCamera().getFr, aspect, near, far);
         //this.app.getCamera().setFrustumPerspective(90, 16f/9, 0, 2000f);
         //float fov = 50;

src/mygame/camera/CustomChaseCamera.java

@@ -0,0 +1,63 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package mygame.camera;
+
+import com.jme3.input.ChaseCamera;
+import com.jme3.input.InputManager;
+import com.jme3.math.FastMath;
+import com.jme3.math.Vector3f;
+import com.jme3.renderer.Camera;
+import com.jme3.scene.Spatial;
+
+/**
+ *
+ * @author sigon
+ */
+public class CustomChaseCamera extends ChaseCamera{
+    
+    public boolean canZoom = true;
+    
+    public CustomChaseCamera(Camera cam, Spatial target, InputManager inputManager) {
+        super(cam, target, inputManager);
+    }
+    
+    public void setHorizontalRotation(float newRotation) {
+       targetRotation = newRotation; 
+    }
+    /*
+    public float getRotation() {
+        return targetRotation;
+    }*/
+    
+    @Override
+    protected void updateCamera(float tpf) {
+        super.updateCamera(tpf);
+        targetRotation = (float)(targetRotation % (2*Math.PI));
+    }
+    
+    @Override
+    protected void zoomCamera(float value) {
+        if (!canZoom || !enabled) {
+            return;
+        }
+
+        zooming = false;
+        targetDistance += value * zoomSensitivity;
+        if (targetDistance > maxDistance) {
+            targetDistance = maxDistance;
+        }
+        if (targetDistance < minDistance) {
+            targetDistance = minDistance;
+        }
+        if (veryCloseRotation) {
+            if ((targetVRotation < minVerticalRotation) && (targetDistance > (minDistance + 1.0f))) {
+                targetVRotation = minVerticalRotation;
+            }
+        }
+        distance = targetDistance;
+            System.out.println(targetDistance);
+    }
+}

src/mygame/control/PlayableCharacter.java

@@ -8,6 +8,7 @@ import com.jme3.collision.CollisionResults;
 import com.jme3.export.JmeExporter;
 import com.jme3.export.JmeImporter;
 import com.jme3.export.Savable;
+import com.jme3.input.ChaseCamera;
 import com.jme3.input.KeyInput;
 import com.jme3.input.controls.ActionListener;
 import com.jme3.input.controls.AnalogListener;
@@ -27,6 +28,7 @@ import com.jme3.scene.control.Control;
 import java.io.IOException;
 import static mygame.Main.level;
 import static mygame.Main.main;
+import mygame.camera.CustomChaseCamera;
 import mygame.server.ServerMain.PlayerActionMessage;
 import mygame.server.ServerMain.PlayerPositionMessage;
 import mygame.server.ServerMain.ServerMessage;
@@ -52,6 +54,11 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
     PhysicsControl physics;
     Vector3f walkDirection;
     
+    float lastActionPerformed = 0.0f;
+    static final float FREECAMERATIME = 0.5f;
+    float cameraTransition = 0.0f;
+    float oldRotation = 0.0f;
+            
     // empty serialization constructor
 
     /** This method is called when the control is added to the spatial,
@@ -87,8 +94,8 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
             main.getInputManager().addMapping("StrafeLeft", new KeyTrigger(KeyInput.KEY_A));
             main.getInputManager().addMapping("StrafeRight", new KeyTrigger(KeyInput.KEY_D));
             main.getInputManager().addMapping("Jump", new KeyTrigger(KeyInput.KEY_SPACE));
-            main.getInputManager().addListener(this, "WalkForward");
+            //main.getInputManager().addListener(this, "WalkForward");
-            main.getInputManager().addListener(this, "WalkBackward");
+            //main.getInputManager().addListener(this, "WalkBackward");
             main.getInputManager().addListener(this, "StrafeRight");
             main.getInputManager().addListener(this, "StrafeLeft");
             main.getInputManager().addListener(this, "Jump");
@@ -108,7 +115,13 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
         /*if (this instanceof NetworkPlayableCharacter) {
             System.out.println("1:"+getWalkDirection()+"Moving:"+moving+"/"+strafingLeft+"/"+strafingRight+"/"+walkingBackward+"/"+walkingForward);
         }*/
+        main.getCamera().setLocation(spatial.getLocalTranslation().add(-20,7f,0));
         if (moving) {
+            if (!(this instanceof NetworkPlayableCharacter)) {
+                cameraTransition+=tpf*4;
+                spatial.getControl(CustomChaseCamera.class).setHorizontalRotation(FastMath.interpolateLinear(cameraTransition, (float)(oldRotation), (float)Math.PI));
+                lastActionPerformed = 0.0f;
+            }
             if (!channel.getAnimationName().equalsIgnoreCase("Walk")) {   
                 channel.setAnim("Walk");
                 channel.setLoopMode(LoopMode.Loop);
@@ -132,8 +145,16 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
                 channel.setAnim("stand");
                 channel.setLoopMode(LoopMode.DontLoop);
             }
+        } else {
+            if (!(this instanceof NetworkPlayableCharacter)) {
+                //System.out.println(spatial.getControl(CustomChaseCamera.class).getHorizontalRotation()+","+(spatial.getControl(CustomChaseCamera.class).getHorizontalRotation()%(2*Math.PI)));
+                oldRotation = spatial.getControl(CustomChaseCamera.class).getHorizontalRotation();
+                cameraTransition = 0.0f;
+            }
+        }
+        if (!(this instanceof NetworkPlayableCharacter)) {
+            lastActionPerformed+=tpf;
         }
-        //isOnGround();
     }
 
     private void SmoothMoveWalk(Vector3f walkDirection, float tpf) {
@@ -174,6 +195,7 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
 
     @Override
     public void onAction(String name, boolean isPressed, float tpf) {
+        lastActionPerformed = 0.0f;
         switch (name) {
             case "StrafeLeft":{
                 current_time = 0.0f;
@@ -195,7 +217,7 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
                     main.client.send(action);
                 }
             }break;
-            case "WalkBackward":{
+            /*case "WalkBackward":{
                 current_time = 0.0f;
                 prevRot = spatial.getLocalRotation(); 
                 walkingBackward = isPressed;
@@ -214,7 +236,7 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
                     PlayerActionMessage action = new PlayerActionMessage(name,Boolean.toString(isPressed),main.client.getId(),spatial.getLocalTranslation(),spatial.getLocalRotation(),main.getCamera().getDirection(),main.getCamera().getLeft());
                     main.client.send(action);
                 }
-            }break;
+            }break;*/
         }
     }
 
@@ -254,22 +276,22 @@ public class PlayableCharacter extends AbstractControl implements Savable, Clone
         Vector3f walkDirection = new Vector3f(0,0,0);
         
         if (strafingLeft) {
-            walkDirection.addLocal(camLeftDir);
+            walkDirection.addLocal(0,0,-1);
             moving=true;
         }
         if (strafingRight) {
-            walkDirection.addLocal(camLeftDir.negate());
+            walkDirection.addLocal(0,0,1);
             moving=true;
         }
 
-        if (walkingForward) {
+        /*if (walkingForward) {
             walkDirection.addLocal(camDir);
             moving=true;
         }  
         if (walkingBackward) {
             walkDirection.addLocal(camDir.negate());
             moving=true;
-        }  
+        } */ 
         return walkDirection;
     }
 }