com.caresilabs.ase.SceneController.java Source code

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Here is the source code for com.caresilabs.ase.SceneController.java

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/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.caresilabs.ase;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.Input.Keys;
import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.math.Vector3;
import com.badlogic.gdx.utils.IntIntMap;

/**
 * Takes a {@link Camera} instance and controls it via w,a,s,d and mouse
 * panning.
 * 
 * @author badlogic
 */
public class SceneController implements InputProcessor {
    private final Camera camera;
    private final IntIntMap keys = new IntIntMap();
    private int STRAFE_LEFT = Keys.A;
    private int STRAFE_RIGHT = Keys.D;
    private int FORWARD = Keys.W;
    private int BACKWARD = Keys.S;
    private int UP = Keys.E;
    private int DOWN = Keys.Q;
    private float velocity = 5;
    private float degreesPerPixel = 0.1f;
    private final Vector3 tmp = new Vector3();

    private World world;

    public SceneController(World world) {
        this.world = world;
        this.camera = world.getCamera();
    }

    @Override
    public boolean keyDown(int keycode) {
        keys.put(keycode, keycode);

        if (keycode == Keys.F) {
            camera.lookAt(world.getEditor().getSelected().getGlobalPosition());
        }
        return true;
    }

    @Override
    public boolean keyUp(int keycode) {
        keys.remove(keycode, 0);
        return true;
    }

    /**
     * Sets the velocity in units per second for moving forward, backward and
     * strafing left/right.
     * 
     * @param velocity
     *            the velocity in units per second
     */
    public void setVelocity(float velocity) {
        this.velocity = velocity;
    }

    /**
     * Sets how many degrees to rotate per pixel the mouse moved.
     * 
     * @param degreesPerPixel
     */
    public void setDegreesPerPixel(float degreesPerPixel) {
        this.degreesPerPixel = degreesPerPixel;
    }

    @Override
    public boolean touchDragged(int screenX, int screenY, int pointer) {
        if (Gdx.input.isButtonPressed(1)) {
            float deltaX = -Gdx.input.getDeltaX() * degreesPerPixel;
            float deltaY = -Gdx.input.getDeltaY() * degreesPerPixel;
            camera.direction.rotate(camera.up, deltaX);
            tmp.set(camera.direction).crs(camera.up).nor();
            camera.direction.rotate(tmp, deltaY);
            // camera.up.rotate(tmp, deltaY);

        } else if (Gdx.input.isButtonPressed(2)) {
            tmp.set(camera.direction).crs(camera.up).nor().scl(-Gdx.input.getDeltaX() / camera.viewportWidth * .1f);
            camera.position.add(tmp);

            tmp.set(camera.up).nor().scl(Gdx.input.getDeltaY() / camera.viewportHeight * .1f);
            camera.position.add(tmp);
        }
        return true;
    }

    public void update() {
        update(Gdx.graphics.getDeltaTime());
    }

    @Override
    public boolean touchDown(int screenX, int screenY, int pointer, int button) {
        if (button == 0) {
            world.insertNew();
        } else if (button == 1) {
            world.select();
        }
        return false;// super.touchDown(screenX, screenY, pointer, button);
    }

    public void update(float deltaTime) {
        float velocity = Gdx.input.isKeyPressed(Keys.SHIFT_LEFT) ? this.velocity * 4 : this.velocity;

        if (keys.containsKey(FORWARD)) {
            tmp.set(camera.direction).nor().scl(deltaTime * velocity);
            camera.position.add(tmp);
        }
        if (keys.containsKey(BACKWARD)) {
            tmp.set(camera.direction).nor().scl(-deltaTime * velocity);
            camera.position.add(tmp);
        }
        if (keys.containsKey(STRAFE_LEFT)) {
            tmp.set(camera.direction).crs(camera.up).nor().scl(-deltaTime * velocity);
            camera.position.add(tmp);
        }
        if (keys.containsKey(STRAFE_RIGHT)) {
            tmp.set(camera.direction).crs(camera.up).nor().scl(deltaTime * velocity);
            camera.position.add(tmp);
        }

        camera.update(true);
    }

    @Override
    public boolean keyTyped(char character) {
        return false;
    }

    @Override
    public boolean touchUp(int screenX, int screenY, int pointer, int button) {
        return false;
    }

    @Override
    public boolean mouseMoved(int screenX, int screenY) {
        return false;
    }

    @Override
    public boolean scrolled(int amount) {
        tmp.set(camera.direction).nor().scl(-amount * velocity / 2f);
        camera.position.add(tmp);
        return false;
    }
}