Android Open Source - AndroidFramework Game Screen

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The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package com.mdobbins.sample;
//from  ww w  . j av  a  2  s. c o m
import java.util.List;

import android.graphics.Color;
import android.graphics.Paint;

import com.mdobbins.framework.Game;
import com.mdobbins.framework.Graphics;
import com.mdobbins.framework.Image;
import com.mdobbins.framework.Screen;
import com.mdobbins.framework.Input.TouchEvent;

public class GameScreen extends Screen {
    enum GameState {
        Ready, Running, Paused, GameOver
    }

    GameState state = GameState.Ready;

    // Variable Setup
    // You would create game objects here.

    int livesLeft = 1;
    Paint paint;

    public GameScreen(Game game) {
        super(game);

        // Initialize game objects here

        // Defining a paint object
        paint = new Paint();
        paint.setTextSize(30);
        paint.setTextAlign(Paint.Align.CENTER);
        paint.setAntiAlias(true);
        paint.setColor(Color.WHITE);

    }

    @Override
    public void update(float deltaTime) {
        List<TouchEvent> touchEvents = game.getInput().getTouchEvents();

        // We have four separate update methods in this example.
        // Depending on the state of the game, we call different update methods.
        // Refer to Unit 3's code. We did a similar thing without separating the
        // update methods.

        if (state == GameState.Ready)
            updateReady(touchEvents);
        if (state == GameState.Running)
            updateRunning(touchEvents, deltaTime);
        if (state == GameState.Paused)
            updatePaused(touchEvents);
        if (state == GameState.GameOver)
            updateGameOver(touchEvents);
    }

    private void updateReady(List<TouchEvent> touchEvents) {
       
        // This example starts with a "Ready" screen.
        // When the user touches the screen, the game begins.
        // state now becomes GameState.Running.
        // Now the updateRunning() method will be called!
       
        if (touchEvents.size() > 0)
            state = GameState.Running;
    }

    private void updateRunning(List<TouchEvent> touchEvents, float deltaTime) {
       
        //This is identical to the update() method from our Unit 2/3 game.
       
       
        // 1. All touch input is handled here:
        int len = touchEvents.size();
        for (int i = 0; i < len; i++) {
            TouchEvent event = touchEvents.get(i);

            if (event.type == TouchEvent.TOUCH_DOWN) {

                if (event.x < 640) {
                    // Move left.
                }

                else if (event.x > 640) {
                    // Move right.
                }

            }

            if (event.type == TouchEvent.TOUCH_UP) {

                if (event.x < 640) {
                    // Stop moving left.
                }

                else if (event.x > 640) {
                    // Stop moving right. }
                }
            }

           
        }
       
        // 2. Check miscellaneous events like death:
       
        if (livesLeft == 0) {
            state = GameState.GameOver;
        }
       
       
        // 3. Call individual update() methods here.
        // This is where all the game updates happen.
        // For example, robot.update();
    }

    private void updatePaused(List<TouchEvent> touchEvents) {
        int len = touchEvents.size();
        for (int i = 0; i < len; i++) {
            TouchEvent event = touchEvents.get(i);
            if (event.type == TouchEvent.TOUCH_UP) {

            }
        }
    }

    private void updateGameOver(List<TouchEvent> touchEvents) {
        int len = touchEvents.size();
        for (int i = 0; i < len; i++) {
            TouchEvent event = touchEvents.get(i);
            if (event.type == TouchEvent.TOUCH_UP) {
                if (event.x > 300 && event.x < 980 && event.y > 100
                        && event.y < 500) {
                    nullify();
                    game.setScreen(new MainMenuScreen(game));
                    return;
                }
            }
        }

    }

    @Override
    public void paint(float deltaTime) {
        Graphics g = game.getGraphics();

        // First draw the game elements.

        // Example:
        // g.drawImage(Assets.background, 0, 0);
        // g.drawImage(Assets.character, characterX, characterY);

        // Secondly, draw the UI above the game elements.
        if (state == GameState.Ready)
            drawReadyUI();
        if (state == GameState.Running)
            drawRunningUI();
        if (state == GameState.Paused)
            drawPausedUI();
        if (state == GameState.GameOver)
            drawGameOverUI();

    }

    private void nullify() {

        // Set all variables to null. You will be recreating them in the
        // constructor.
        paint = null;

        // Call garbage collector to clean up memory.
        System.gc();
    }

    private void drawReadyUI() {
        Graphics g = game.getGraphics();

        g.drawARGB(155, 0, 0, 0);
        g.drawString("Tap each side of the screen to move in that direction.",
                640, 300, paint);

    }

    private void drawRunningUI() {
        Graphics g = game.getGraphics();

    }

    private void drawPausedUI() {
        Graphics g = game.getGraphics();
        // Darken the entire screen so you can display the Paused screen.
        g.drawARGB(155, 0, 0, 0);

    }

    private void drawGameOverUI() {
        Graphics g = game.getGraphics();
        g.drawRect(0, 0, 1281, 801, Color.BLACK);
        g.drawString("GAME OVER.", 640, 300, paint);

    }

    @Override
    public void pause() {
        if (state == GameState.Running)
            state = GameState.Paused;

    }

    @Override
    public void resume() {

    }

    @Override
    public void dispose() {

    }

    @Override
    public void backButton() {
        pause();
    }
}

Java Source Code List

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