com.github.skittishSloth.openSkies.battles.BattleScreen.java Source code

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Here is the source code for com.github.skittishSloth.openSkies.battles.BattleScreen.java

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package com.github.skittishSloth.openSkies.battles;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.DelayedRemovalArray;
import com.github.skittishSloth.openSkies.battles.ships.BankState;
import com.github.skittishSloth.openSkies.battles.ships.PlayerShip;
import com.github.skittishSloth.openSkies.battles.weapons.Laser;

/**
 *
 * @author mcory01
 */
public class BattleScreen implements Screen {

    public BattleScreen() {
        batch = new SpriteBatch();
        player = new PlayerShip("gfx/ships/spaceship_banking64.pack");
        camera = new OrthographicCamera();
        camera.setToOrtho(true);
    }

    @Override
    public void render(final float delta) {
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        if (Gdx.input.isKeyPressed(Input.Keys.SHIFT_LEFT)) {
            if (Gdx.input.isKeyPressed(Input.Keys.LEFT)) {
                player.setBankState(BankState.LEFT);
                player.bankLeft(delta);
            } else if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) {
                player.setBankState(BankState.RIGHT);
                player.bankRight(delta);
            } else {
                player.setBankState(BankState.NONE);
            }
        } else {
            player.setBankState(BankState.NONE);
            if (Gdx.input.isKeyPressed(Input.Keys.LEFT)) {
                player.rotateLeft(delta);
            } else if (Gdx.input.isKeyPressed(Input.Keys.RIGHT)) {
                player.rotateRight(delta);
            }
        }

        if (Gdx.input.isKeyPressed(Input.Keys.UP)) {
            player.moveForward(delta);
        } else if (Gdx.input.isKeyPressed(Input.Keys.DOWN)) {
            player.moveBackward(delta);
        }

        if (Gdx.input.isKeyPressed(Input.Keys.SPACE)) {
            if (player.canFire()) {
                final Laser laser = player.fireLaser();
                lasers.add(laser);
            }
        }

        camera.update();
        batch.setProjectionMatrix(camera.combined);
        batch.begin();
        updateLasers(delta);
        player.render(batch, delta);
        batch.end();
    }

    @Override
    public void resize(int width, int height) {

    }

    @Override
    public void show() {

    }

    @Override
    public void hide() {

    }

    @Override
    public void pause() {

    }

    @Override
    public void resume() {

    }

    @Override
    public void dispose() {
        batch.dispose();
        player.dispose();
        for (final Laser laser : lasers) {
            laser.dispose();
        }
        lasers.clear();
    }

    private void updateLasers(final float delta) {
        lasers.begin();
        for (final Laser laser : lasers) {
            if (laser.isAlive()) {
                laser.render(batch, delta);
                handleLaserState(laser);
            } else {
                laser.dispose();
                lasers.removeValue(laser, true);
            }
        }
        lasers.end();
    }

    private void handleLaserState(final Laser laser) {
        final float x = laser.getX();
        final float y = laser.getY();

        if ((x < 0) || (x > Gdx.graphics.getWidth())) {
            laser.setAlive(false);
        }

        if ((y < 0) || (y > Gdx.graphics.getHeight())) {
            laser.setAlive(false);
        }
    }

    private final DelayedRemovalArray<Laser> lasers = new DelayedRemovalArray<Laser>();
    private final SpriteBatch batch;
    private final PlayerShip player;
    private final OrthographicCamera camera;
}