using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;
namespace SpaceChace {
public class Game : Microsoft.Xna.Framework.Game {
//定数
public readonly int S_PLAY =0;//プレイ
public readonly int S_GAMEOVER=1;//ゲームオーバー
//システム
private GraphicsDeviceManager graphics; //グラフィックス
private SpriteBatch spriteBatch;//スプライトバッチ
private SpriteFont font; //フォント
//フィギュア
private Camera camera; //カメラ
private Figure fighter;//戦闘機
private Figure[] rock; //岩
//ゲーム
private int init; //初期化
private int scene; //シーン
private int score; //スコア
private int cameraMode; //カメラモード
private bool spaceKeyDown;//スペースキーダウン
//コンストラクタ
public Game() {
graphics=new GraphicsDeviceManager(this);
Content.RootDirectory="Content";
}
//初期化
protected override void Initialize() {
//描画間隔の指定
IsFixedTimeStep=true;
TargetElapsedTime=new TimeSpan(200000);
//ベースの初期化
base.Initialize();
}
//グラフィクスコンテントの読み込み
protected override void LoadContent() {
//文字表示
spriteBatch=new SpriteBatch(GraphicsDevice);
font=Content.Load<SpriteFont>("DefaultFont");
//カメラの生成
camera=new Camera(
(float)GraphicsDevice.Viewport.Width/
(float)GraphicsDevice.Viewport.Height);
camera.PositionZ=20;
camera.PositionZ=10;
camera.PositionY=-10;
camera.Pitch=(float)Math.PI/4;
cameraMode=1;
spaceKeyDown=false;
//戦闘機の生成
fighter=new Figure(Content.Load<Model>("fighter"));
fighter.RotateX=MathHelper.ToRadians(-90.0f);
fighter.RotateY=MathHelper.ToRadians(180.0f);
fighter.PositionY=-4.0f;
//岩の生成
Model model=Content.Load<Model>("rock");
rock=new Figure[30];
for (int i=0;i<rock.Length;i++) {
rock[i]=new Figure(model);
rock[i].Scale=new Vector3(0.5f,0.5f,0.5f);
}
//初期化
init=S_PLAY;
}
//グラフィクスコンテントの解放
protected override void UnloadContent() {
}
//更新
protected override void Update(GameTime gameTime) {
//キー状態
KeyboardState keyState=Keyboard.GetState();
//初期化
if (init>=0) {
if (init==S_PLAY) {
fighter.PositionX=0.0f;
fighter.PositionY=-4.0f;
for (int i=0;i<rock.Length;i++) {
rock[i].PositionX=(Rand(140)/10.0f)-7.0f;
rock[i].PositionY=10.0f+Rand(500)/10.0f;
}
}
scene=init;
init=-1;
}
//プレイ
if (scene==S_PLAY) {
//スコアの加算
score++;
for (int i=0;i<rock.Length;i++) {
//岩の移動
rock[i].PositionY-=0.3f;
if (rock[i].PositionY<-20.0f) {
rock[i].PositionX=(Rand(160)/10.0f)-8.0f;
rock[i].PositionY=10.0f+Rand(500)/10.0f;
}
//ゲームオーバー判定
if (IsHit(fighter.PositionX,fighter.PositionY,
rock[i].PositionX,rock[i].PositionY)) {
init=S_GAMEOVER;
}
}
//キー操作
if (keyState.IsKeyDown(Keys.Left)) {
if (fighter.PositionX>-7.0f) fighter.PositionX-=0.2f;
} else if (keyState.IsKeyDown(Keys.Right)) {
if (fighter.PositionX< 7.0f) fighter.PositionX+=0.2f;
} else if (keyState.IsKeyDown(Keys.Up)) {
if (fighter.PositionY<10.0f) fighter.PositionY+=0.2f;
} else if (keyState.IsKeyDown(Keys.Down)) {
if (fighter.PositionY>-8.0f) fighter.PositionY-=0.2f;
}
}
//ゲームオーバー
else if (scene==S_GAMEOVER) {
//キー操作
if (keyState.IsKeyDown(Keys.Enter)) {
init=S_PLAY;
}
}
//カメラモード
if (keyState.IsKeyDown(Keys.Space) && !spaceKeyDown) {
if (cameraMode==0) {
camera.PositionZ=10;
camera.PositionY=-10;
camera.Pitch=(float)Math.PI/4;
cameraMode=1;
} else {
camera.PositionZ=20;
camera.PositionY=0;
camera.Pitch=0;
cameraMode=0;
}
}
spaceKeyDown=keyState.IsKeyDown(Keys.Space);
//ベースの更新
base.Update(gameTime);
}
//岩の衝突判定
private bool IsHit(float x0,float y0,float x1,float y1) {
return (x0-x1)*(x0-x1)+(y0-y1)*(y0-y1)<1.0f;
}
//描画
protected override void Draw(GameTime gameTime) {
//背景色
graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
//フィギュアの描画
fighter.Draw(camera);
for (int i=0;i<rock.Length;i++) {
rock[i].Draw(camera);
}
//2D描画
spriteBatch.Begin();
DrawString("SCORE "+score,0,0);
if (scene==S_GAMEOVER) {
DrawString("G A M E O V E R",
(int)(800.0f-font.MeasureString(
"G A M E O V E R").X)/2,140);
}
spriteBatch.End();
//ベースの描画
base.Draw(gameTime);
}
//文字列の描画
private void DrawString(String str,int x,int y) {
spriteBatch.DrawString(font,str,new Vector2(x,y),Color.White);
}
//乱数の取得
private Random random=new Random();
private int Rand(int num) {
return random.Next(num);
}
}
}
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