package org.test.snake;
import loon.LTexture;
import loon.Screen;
import loon.canvas.LColor;
import loon.event.GameTouch;
import loon.event.LTouchCollection;
import loon.event.LTouchLocation;
import loon.event.SysInputFactory;
import loon.opengl.GLEx;
import loon.utils.timer.LTimerContext;
public class GameScreen extends Screen {
enum GameState {
Ready, Running, Paused, GameOver
}
GameState state = GameState.Ready;
World world;
int oldScore = 0;
String score = "0";
public GameScreen() {
world = new World();
}
private void updateReady(LTouchCollection touchEvents) {
if (touchEvents.size() > 0) {
state = GameState.Running;
}
}
private void updateRunning(LTouchCollection touchEvents, float deltaTime) {
for (LTouchLocation event : touchEvents) {
if (event.isUp()) {
if (event.x() < 64 && event.y() < 64) {
if (Settings.soundEnabled) {
Assets.click.play();
}
state = GameState.Paused;
return;
}
}
if (event.isDown()) {
if (event.x() < 64 && event.y() > 416) {
world.snake.turnLeft();
}
if (event.x() > 256 && event.y() > 416) {
world.snake.turnRight();
}
}
}
world.update(deltaTime);
if (world.gameOver) {
if (Settings.soundEnabled)
Assets.bitten.play();
state = GameState.GameOver;
}
if (oldScore != world.score) {
oldScore = world.score;
score = "" + oldScore;
if (Settings.soundEnabled)
Assets.eat.play();
}
}
private void updatePaused(LTouchCollection touchEvents) {
for (LTouchLocation event : touchEvents) {
if (event.isUp()) {
if (event.x() > 80 && event.x() <= 240) {
if (event.y() > 100 && event.y() <= 148) {
if (Settings.soundEnabled)
Assets.click.play();
state = GameState.Running;
return;
}
if (event.y() > 148 && event.y() < 196) {
if (Settings.soundEnabled)
Assets.click.play();
setScreen(new MainMenuScreen());
return;
}
}
}
}
}
private void updateGameOver(LTouchCollection touchEvents) {
for (LTouchLocation event : touchEvents) {
if (event.isUp()) {
if (event.x() >= 128 && event.x() <= 192 && event.y() >= 200
&& event.y() <= 264) {
if (Settings.soundEnabled)
Assets.click.play();
setScreen(new MainMenuScreen());
return;
}
}
}
}
private void drawWorld(GLEx g, World world) {
Snake snake = world.snake;
SnakePart head = snake.parts.get(0);
Stain stain = world.stain;
LTexture stainPixmap = null;
if (stain.type == Stain.TYPE_1)
stainPixmap = Assets.stain1;
if (stain.type == Stain.TYPE_2)
stainPixmap = Assets.stain2;
if (stain.type == Stain.TYPE_3)
stainPixmap = Assets.stain3;
int x = stain.x * 32;
int y = stain.y * 32;
g.draw(stainPixmap, x, y);
int len = snake.parts.size();
for (int i = 1; i < len; i++) {
SnakePart part = snake.parts.get(i);
x = part.x * 32;
y = part.y * 32;
g.draw(Assets.tail, x, y);
}
LTexture headPixmap = null;
if (snake.direction == Snake.UP)
headPixmap = Assets.headUp;
if (snake.direction == Snake.LEFT)
headPixmap = Assets.headLeft;
if (snake.direction == Snake.DOWN)
headPixmap = Assets.headDown;
if (snake.direction == Snake.RIGHT)
headPixmap = Assets.headRight;
x = head.x * 32 + 16;
y = head.y * 32 + 16;
g.draw(headPixmap, x - headPixmap.getWidth() / 2,
y - headPixmap.getHeight() / 2);
}
private void drawReadyUI(GLEx g) {
g.draw(Assets.ready, 47, 100);
g.drawLine(0, 416, 480, 416, LColor.black);
}
private void drawRunningUI(GLEx g) {
g.draw(Assets.buttons, 0, 0, 64, 128, 64, 64);
g.drawLine(0, 416, 480, 416, LColor.black);
g.draw(Assets.buttons, 0, 416, 64, 64, 64, 64);
g.draw(Assets.buttons, 256, 416, 0, 64, 64, 64);
}
private void drawPausedUI(GLEx g) {
g.draw(Assets.pause, 80, 100);
g.drawLine(0, 416, 480, 416, LColor.black);
}
private void drawGameOverUI(GLEx g) {
g.draw(Assets.gameOver, 62, 100);
g.draw(Assets.buttons, 128, 200, 0, 128, 64, 64);
g.drawLine(0, 416, 480, 416, LColor.black);
}
public void drawText(GLEx g, String line, int x, int y) {
int len = line.length();
for (int i = 0; i < len; i++) {
char character = line.charAt(i);
if (character == ' ') {
x += 20;
continue;
}
int srcX = 0;
int srcWidth = 0;
if (character == '.') {
srcX = 200;
srcWidth = 10;
} else {
srcX = (character - '0') * 20;
srcWidth = 20;
}
g.draw(Assets.numbers, x, y, srcX, 0, srcWidth, 32);
x += srcWidth;
}
}
@Override
public void pause() {
if (state == GameState.Running)
state = GameState.Paused;
if (world.gameOver) {
Settings.addScore(world.score);
Settings.save();
}
}
@Override
public void resume() {
}
@Override
public void draw(GLEx g) {
g.draw(Assets.background, 0, 0);
drawWorld(g, world);
if (state == GameState.Ready) {
drawReadyUI(g);
}
if (state == GameState.Running) {
drawRunningUI(g);
}
if (state == GameState.Paused) {
drawPausedUI(g);
}
if (state == GameState.GameOver) {
drawGameOverUI(g);
}
drawText(g, score, g.getWidth() / 2 - score.length() * 20 / 2,
g.getHeight() - 42);
}
@Override
public void onLoad() {
// 允许Loon记录触屏事件到统一的集合中(这种模式和在屏幕上直接写入touch事件中并不互相影响，只是方便用户遍历具体都触发了那些触屏操作
// 因为比较耗费资源，默认不开启)
SysInputFactory.startTouchCollection();
// 最后显示用户绘制
lastUserDraw();
}
@Override
public void alter(LTimerContext timer) {
LTouchCollection touchEvents = SysInputFactory.getTouchState();
if (state == GameState.Ready) {
updateReady(touchEvents);
}
if (state == GameState.Running) {
updateRunning(touchEvents, timer.getMilliseconds());
}
if (state == GameState.Paused) {
updatePaused(touchEvents);
}
if (state == GameState.GameOver) {
updateGameOver(touchEvents);
}
}
@Override
public void resize(int width, int height) {
}
@Override
public void touchDown(GameTouch e) {
}
@Override
public void touchUp(GameTouch e) {
}
@Override
public void touchMove(GameTouch e) {
}
@Override
public void touchDrag(GameTouch e) {
}
@Override
public void close() {
SysInputFactory.stopTouchCollection();
}
}