143 lines
4.9 KiB
C#
143 lines
4.9 KiB
C#
/*******************************************************************************************
|
|
*
|
|
* raylib [shapes] example - following eyes
|
|
*
|
|
* Example complexity rating: [★★☆☆] 2/4
|
|
*
|
|
* Example originally created with raylib 2.5, last time updated with raylib 2.5
|
|
*
|
|
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
|
|
* BSD-like license that allows static linking with closed source software
|
|
*
|
|
* Copyright (c) 2013-2025 Ramon Santamaria (@raysan5)
|
|
*
|
|
********************************************************************************************/
|
|
|
|
namespace Examples.Shapes;
|
|
|
|
public partial class FollowingEyes : IExample
|
|
{
|
|
private const int screenWidth = 800;
|
|
private const int screenHeight = 450;
|
|
|
|
public string Name => "Shapes / Following Eyes";
|
|
|
|
public string Title => "raylib [shapes] example - following eyes";
|
|
|
|
private Vector2 scleraLeftPosition;
|
|
private Vector2 scleraRightPosition;
|
|
private float scleraRadius;
|
|
|
|
private Vector2 irisLeftPosition;
|
|
private Vector2 irisRightPosition;
|
|
private float irisRadius;
|
|
|
|
private float angle;
|
|
private float dx, dy, dxx, dyy;
|
|
|
|
public void Init()
|
|
{
|
|
scleraLeftPosition = new(GetScreenWidth() / 2.0f - 100.0f, GetScreenHeight() / 2.0f);
|
|
scleraRightPosition = new(GetScreenWidth() / 2.0f + 100.0f, GetScreenHeight() / 2.0f);
|
|
scleraRadius = 80;
|
|
|
|
irisLeftPosition = new(GetScreenWidth() / 2.0f - 100.0f, GetScreenHeight() / 2.0f);
|
|
irisRightPosition = new(GetScreenWidth() / 2.0f + 100.0f, GetScreenHeight() / 2.0f);
|
|
irisRadius = 24;
|
|
|
|
angle = 0.0f;
|
|
dx = 0.0f;
|
|
dy = 0.0f;
|
|
dxx = 0.0f;
|
|
dyy = 0.0f;
|
|
}
|
|
|
|
public void Update()
|
|
{
|
|
// Update
|
|
//----------------------------------------------------------------------------------
|
|
irisLeftPosition = GetMousePosition();
|
|
irisRightPosition = GetMousePosition();
|
|
|
|
// Check not inside the left eye sclera
|
|
if (!CheckCollisionPointCircle(irisLeftPosition, scleraLeftPosition, scleraRadius - irisRadius))
|
|
{
|
|
dx = irisLeftPosition.X - scleraLeftPosition.X;
|
|
dy = irisLeftPosition.Y - scleraLeftPosition.Y;
|
|
|
|
angle = MathF.Atan2(dy, dx);
|
|
|
|
dxx = (scleraRadius - irisRadius) * MathF.Cos(angle);
|
|
dyy = (scleraRadius - irisRadius) * MathF.Sin(angle);
|
|
|
|
irisLeftPosition.X = scleraLeftPosition.X + dxx;
|
|
irisLeftPosition.Y = scleraLeftPosition.Y + dyy;
|
|
}
|
|
|
|
// Check not inside the right eye sclera
|
|
if (!CheckCollisionPointCircle(irisRightPosition, scleraRightPosition, scleraRadius - irisRadius))
|
|
{
|
|
dx = irisRightPosition.X - scleraRightPosition.X;
|
|
dy = irisRightPosition.Y - scleraRightPosition.Y;
|
|
|
|
angle = MathF.Atan2(dy, dx);
|
|
|
|
dxx = (scleraRadius - irisRadius) * MathF.Cos(angle);
|
|
dyy = (scleraRadius - irisRadius) * MathF.Sin(angle);
|
|
|
|
irisRightPosition.X = scleraRightPosition.X + dxx;
|
|
irisRightPosition.Y = scleraRightPosition.Y + dyy;
|
|
}
|
|
//----------------------------------------------------------------------------------
|
|
|
|
// Draw
|
|
//----------------------------------------------------------------------------------
|
|
BeginDrawing();
|
|
ClearBackground(Color.RayWhite);
|
|
|
|
DrawCircleV(scleraLeftPosition, scleraRadius, Color.LightGray);
|
|
DrawCircleV(irisLeftPosition, irisRadius, Color.Brown);
|
|
DrawCircleV(irisLeftPosition, 10, Color.Black);
|
|
|
|
DrawCircleV(scleraRightPosition, scleraRadius, Color.LightGray);
|
|
DrawCircleV(irisRightPosition, irisRadius, Color.DarkGreen);
|
|
DrawCircleV(irisRightPosition, 10, Color.Black);
|
|
|
|
DrawFPS(10, 10);
|
|
|
|
EndDrawing();
|
|
//----------------------------------------------------------------------------------
|
|
}
|
|
|
|
public void Unload()
|
|
{
|
|
}
|
|
|
|
public static int Main()
|
|
{
|
|
// Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - following eyes");
|
|
|
|
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
var game = new FollowingEyes();
|
|
game.Init();
|
|
|
|
// Main game loop
|
|
while (!WindowShouldClose()) // Detect window close button or ESC key
|
|
{
|
|
game.Update();
|
|
}
|
|
|
|
game.Unload();
|
|
|
|
// De-Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
CloseWindow(); // Close window and OpenGL context
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
return 0;
|
|
}
|
|
}
|