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Mario Störmer
2026-05-07 11:54:11 +02:00
commit b8a0234ad2
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blight-game/src/main/java/de/blight/game/control/ThirdPersonCamera.java Normal file
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package de.blight.game.control;
import com.jme3.input.InputManager;
import com.jme3.input.MouseInput;
import com.jme3.input.controls.AnalogListener;
import com.jme3.input.controls.MouseAxisTrigger;
import com.jme3.math.*;
import com.jme3.renderer.Camera;
import com.jme3.scene.Spatial;
/**
* Third-Person-Kamera:
* - Mausbewegung → Kamera um den Charakter drehen (immer, kein Klick nötig)
* - Y-Achse invertiert → Maus hoch = Kamera runter (oldschool)
* - Mausrad → Zoom (Abstand)
*/
public class ThirdPersonCamera {
private static final float MOUSE_SENSITIVITY = 1.8f;
private static final float MIN_DISTANCE = 3f;
private static final float MAX_DISTANCE = 20f;
private static final float MIN_VERTICAL_ANGLE = -0.3f;
private static final float MAX_VERTICAL_ANGLE = FastMath.HALF_PI - 0.1f;
private static final float TARGET_HEIGHT = 1.6f;
private final Camera cam;
private final InputManager inputManager;
private Spatial target;
private float yaw = 0f;
private float pitch = 0.4f;
private float distance = 10f;
private boolean paused = false;
public ThirdPersonCamera(Camera cam, InputManager inputManager) {
this.cam = cam;
this.inputManager = inputManager;
registerMappings();
}
public void setTarget(Spatial target) {
this.target = target;
}
public void setPaused(boolean paused) { this.paused = paused; }
// -----------------------------------------------------------------------
private void registerMappings() {
inputManager.addMapping("ZoomIn", new MouseAxisTrigger(MouseInput.AXIS_WHEEL, false));
inputManager.addMapping("ZoomOut", new MouseAxisTrigger(MouseInput.AXIS_WHEEL, true));
inputManager.addMapping("MouseX", new MouseAxisTrigger(MouseInput.AXIS_X, false));
inputManager.addMapping("MouseXNeg", new MouseAxisTrigger(MouseInput.AXIS_X, true));
inputManager.addMapping("MouseY", new MouseAxisTrigger(MouseInput.AXIS_Y, false));
inputManager.addMapping("MouseYNeg", new MouseAxisTrigger(MouseInput.AXIS_Y, true));
AnalogListener analogListener = (name, value, tpf) -> {
if (paused) return;
switch (name) {
// Horizontale Rotation
case "MouseX" -> yaw -= value * MOUSE_SENSITIVITY;
case "MouseXNeg" -> yaw += value * MOUSE_SENSITIVITY;
// Vertikale Rotation — Y invertiert: Maus hoch → Kamera runter
case "MouseY" -> pitch = FastMath.clamp(pitch - value * MOUSE_SENSITIVITY, MIN_VERTICAL_ANGLE, MAX_VERTICAL_ANGLE);
case "MouseYNeg" -> pitch = FastMath.clamp(pitch + value * MOUSE_SENSITIVITY, MIN_VERTICAL_ANGLE, MAX_VERTICAL_ANGLE);
// Zoom
case "ZoomIn" -> distance = FastMath.clamp(distance - value * 20f, MIN_DISTANCE, MAX_DISTANCE);
case "ZoomOut" -> distance = FastMath.clamp(distance + value * 20f, MIN_DISTANCE, MAX_DISTANCE);
}
};
inputManager.addListener(analogListener,
"MouseX", "MouseXNeg", "MouseY", "MouseYNeg", "ZoomIn", "ZoomOut");
}
public void update(float tpf) {
if (target == null) return;
Vector3f pivot = target.getWorldTranslation().add(0, TARGET_HEIGHT, 0);
// Sphärische Koordinaten → kartesisch
float x = distance * FastMath.cos(pitch) * FastMath.sin(yaw);
float y = distance * FastMath.sin(pitch);
float z = distance * FastMath.cos(pitch) * FastMath.cos(yaw);
Vector3f camPos = pivot.add(x, y, z);
cam.setLocation(camPos);
cam.lookAt(pivot, Vector3f.UNIT_Y);
}
/** Aktueller Yaw-Winkel (für CharacterControl nutzbar). */
public float getYaw() { return yaw; }
}