Raylib-csでゲームを作る
1. 環境構築
- VSCodeインストール
- .NET SDKインストール
- VSCodeの拡張機能C# Dev Kitをインストール
- ※確認
code --version dotnet --version
2. ゲームプログラムを作成
-
コマンドプロンプトを開く
-
作業用のプロジェクトを作成
- 例：デスクトップ上に新しいプロジェクトを作成
cd Desktop dotnet new console -o MyGameSpace
- 例：デスクトップ上に新しいプロジェクトを作成
-
Raylib-csライブラリを追加する
- 作成したプロジェクトフォルダに移動
cd MyGameSpace - Raylib-csを追加
dotnet add package Raylib-cs
- 作成したプロジェクトフォルダに移動
3. VSCodeでコードを書く
- VSCodeを開く
code .
-
Program.csに以下のコードを貼り付け
using System;
using System.Collections.Generic;
using Raylib_cs;
using System.Numerics;
public static class Program
{
private enum GameState { READY, PLAYING, GAMEOVER, GAMECLEAR }
// --- ゲーム全体の設定 ---
private static class GameConfig
{
public const int ScreenWidth = 1280;
public const int ScreenHeight = 720;
public const int Fps = 60;
public const float Gravity = 0.5f;
public const float JumpPower = -8.0f;
public const float PipeSpeed = 3;
public const float PipeGap = 150;
public const float PipeWidth = 50;
public const float PipeSpawnInterval = 120;
public const float PlayerRadius = 15;
}
// --- プレイヤー ---
private class Player
{
public Vector2 Position;
private float velocity;
public Player() => Reset();
public void Reset()
{
Position = new Vector2(100, GameConfig.ScreenHeight / 2);
velocity = 0;
}
public void Update()
{
velocity += GameConfig.Gravity;
Position.Y += velocity;
if (Raylib.IsKeyPressed(KeyboardKey.Space))
{
velocity = GameConfig.JumpPower;
}
}
public void Draw() =>
Raylib.DrawCircleV(Position, GameConfig.PlayerRadius, Color.Black);
public bool IsOutOfBounds() =>
Position.Y + GameConfig.PlayerRadius > GameConfig.ScreenHeight ||
Position.Y - GameConfig.PlayerRadius < 0;
}
// --- パイプ管理 ---
private class PipeManager
{
private readonly List<Rectangle> pipes = new();
private float spawnTimer = 0;
private bool scored = false;
public void Reset()
{
pipes.Clear();
spawnTimer = 0;
scored = false;
}
public void Update()
{
spawnTimer++;
if (spawnTimer >= GameConfig.PipeSpawnInterval)
{
SpawnPipes();
spawnTimer = 0;
scored = false;
}
for (int i = pipes.Count - 1; i >= 0; i--)
{
pipes[i] = new Rectangle(
pipes[i].X - GameConfig.PipeSpeed,
pipes[i].Y,
pipes[i].Width,
pipes[i].Height
);
if (pipes[i].X < -GameConfig.PipeWidth)
{
pipes.RemoveAt(i);
}
}
}
private void SpawnPipes()
{
float gapCenterY = Raylib.GetRandomValue(GameConfig.ScreenHeight / 4, GameConfig.ScreenHeight * 3 / 4);
float topHeight = gapCenterY - GameConfig.PipeGap / 2;
float bottomY = gapCenterY + GameConfig.PipeGap / 2;
float bottomHeight = GameConfig.ScreenHeight - bottomY;
pipes.Add(new Rectangle(GameConfig.ScreenWidth, 0, GameConfig.PipeWidth, topHeight));
pipes.Add(new Rectangle(GameConfig.ScreenWidth, bottomY, GameConfig.PipeWidth, bottomHeight));
}
public bool CheckCollision(Player player)
{
foreach (var pipe in pipes)
{
if (Raylib.CheckCollisionCircleRec(player.Position, GameConfig.PlayerRadius, pipe))
return true;
}
return false;
}
public bool TryScore(Player player, ref int score)
{
if (!scored && pipes.Count > 0 && pipes[0].X + pipes[0].Width < player.Position.X)
{
score++;
scored = true;
return true;
}
return false;
}
public void Draw()
{
foreach (var pipe in pipes)
Raylib.DrawRectangleRec(pipe, Color.Green);
}
}
// --- メイン処理 ---
public static void Main()
{
Raylib.InitWindow(GameConfig.ScreenWidth, GameConfig.ScreenHeight, "Flappy Bird Clone");
Raylib.SetTargetFPS(GameConfig.Fps);
GameState state = GameState.READY;
bool isFirstTime = true;
Player player = new Player();
PipeManager pipeManager = new PipeManager();
int score = 0;
while (!Raylib.WindowShouldClose())
{
// --- 更新 ---
switch (state)
{
case GameState.READY:
if (Raylib.IsKeyPressed(KeyboardKey.Enter))
{
state = GameState.PLAYING;
isFirstTime = false;
}
break;
case GameState.PLAYING:
player.Update();
pipeManager.Update();
if (pipeManager.CheckCollision(player) || player.IsOutOfBounds())
state = GameState.GAMEOVER;
pipeManager.TryScore(player, ref score);
// ===== ここでゲームクリア条件を管理 =====
if (score >= 5)
state = GameState.GAMECLEAR;
break;
case GameState.GAMEOVER:
case GameState.GAMECLEAR:
if (Raylib.IsKeyPressed(KeyboardKey.Enter))
{
player.Reset();
pipeManager.Reset();
score = 0;
state = GameState.PLAYING;
}
break;
}
// --- 描画 ---
Raylib.BeginDrawing();
Raylib.ClearBackground(Color.RayWhite);
switch (state)
{
case GameState.PLAYING:
player.Draw();
pipeManager.Draw();
Raylib.DrawText(score.ToString(), 10, 10, 30, Color.Black);
break;
case GameState.READY:
if (isFirstTime)
{
Raylib.DrawText("FLAPPY BIRD", GameConfig.ScreenWidth / 2 - 200, GameConfig.ScreenHeight / 2 - 100, 50, Color.Black);
Raylib.DrawText("Press 'ENTER' to start", GameConfig.ScreenWidth / 2 - 150, GameConfig.ScreenHeight / 2, 20, Color.Black);
}
break;
case GameState.GAMEOVER:
Raylib.DrawText("GAME OVER", GameConfig.ScreenWidth / 2 - 150, GameConfig.ScreenHeight / 2 - 50, 50, Color.Black);
Raylib.DrawText($"Score: {score}", GameConfig.ScreenWidth / 2 - 50, GameConfig.ScreenHeight / 2, 25, Color.Black);
Raylib.DrawText("Press 'ENTER' to Restart", GameConfig.ScreenWidth / 2 - 150, GameConfig.ScreenHeight / 2 + 50, 20, Color.Black);
break;
case GameState.GAMECLEAR:
Raylib.DrawText("GAME CLEAR!!", GameConfig.ScreenWidth / 2 - 200, GameConfig.ScreenHeight / 2 - 50, 50, Color.Gold);
Raylib.DrawText($"Final Score: {score}", GameConfig.ScreenWidth / 2 - 80, GameConfig.ScreenHeight / 2, 25, Color.Black);
Raylib.DrawText("Press 'ENTER' to Play Again", GameConfig.ScreenWidth / 2 - 180, GameConfig.ScreenHeight / 2 + 50, 20, Color.Black);
break;
}
Raylib.EndDrawing();
}
Raylib.CloseWindow();
}
}