com.cesarandres.aw.OrthoCamController.java Source code

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Here is the source code for com.cesarandres.aw.OrthoCamController.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.cesarandres.aw;

import com.badlogic.gdx.InputAdapter;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.math.Vector3;

public class OrthoCamController extends InputAdapter {
    final OrthographicCamera camera;
    final Vector3 curr = new Vector3();
    final Vector3 last = new Vector3(-1, -1, -1);
    final Vector3 delta = new Vector3();
    final GameWorld world;

    public OrthoCamController(OrthographicCamera camera, GameWorld world) {
        this.camera = camera;
        this.world = world;
    }

    @Override
    public boolean touchDragged(int x, int y, int pointer) {
        this.camera.unproject(this.curr.set(x, y, 0));
        if (!(this.last.x == -1 && this.last.y == -1 && this.last.z == -1)) {
            this.camera.unproject(this.delta.set(this.last.x, this.last.y, 0));
            this.delta.sub(this.curr);
            this.camera.position.add(this.delta.x, this.delta.y, 0);
        }
        this.last.set(x, y, 0);
        return false;
    }

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

    @Override
    public boolean touchUp(int x, int y, int pointer, int button) {
        this.camera.unproject(this.curr.set(x, y, 0));
        this.world.mapClick((int) this.curr.x, (int) this.curr.y);
        this.last.set(-1, -1, -1);
        return false;
    }

    @Override
    public boolean scrolled(int ammount) {
        float newZoom = this.camera.zoom + (float) ammount / 50f;
        if (newZoom >= 0.2f && newZoom <= 4f) {
            this.camera.zoom = newZoom;
            return true;
        } else {
            return false;
        }
    }
}