using System;

​

public class PlatformerPhysics

{

    // Semi Constants

    public float PlayerSpeedX = 0.25f;

    public float JumpHeight = 3f;

    public float GravityPower = 0.156912f;

    public float Timescale = 1f;

    public float WorldWidth = 800f; // Example world width

​

    // Full Vars

    public int Frames = 0;

    public float Time = 0f;

    public int DashCool = 0;

    public Vector2 PlayerPos = new Vector2(0, 0);

    public Vector2 PlayerVel = new Vector2(0, 0);

​

    // Simplified collision check (implementation not provided)

    public Func<string, bool> CheckCollision = (direction) => false;

​

    public PlatformerPhysics(Func<string, bool> collisionCheck)

    {

        CheckCollision = collisionCheck;

    }

​

    public class Vector2

    {

        public float x;

        public float y;

​

        public Vector2(float x, float y)

        {

            this.x = x;

            this.y = y;

        }

    }

​

    // Useful Functions (translated from Lua)

    public float RoundBy(float input, float by)

    {

        return (float)Math.Floor(input / by + 0.5) * by;

    }

​

    public float RPT1(float val, float max)

    {

        if (val > max) return 1;

        else if (val < 1) return max;

        else return val;

    }

​

    public int BYN(float val)

    {

        if (val > 0) return 1;

        else if (val < 0) return -1;

        else return 0;

    }

​

    public float Clamp2(float val, float min, float max)

    {

        if (val > max) return max;

        else if (val < min) return min;

        else return val;

    }

​

    // Update function (called every frame)

    public void Update()

    {

        // Apply gravity

        PlayerVel.y -= GravityPower * Timescale;

​

        // Update position based on velocity

        PlayerPos.x += PlayerVel.x * Timescale;

        PlayerPos.y += PlayerVel.y * Timescale;

​

        // Collision handling

        if (CheckCollision("left") && PlayerVel.x < 0)

        {

            PlayerVel.x = 0;

        }

        if (CheckCollision("right") && PlayerVel.x > 0)

        {

            PlayerVel.x = 0;

        }

​

        // World boundary checks

        PlayerPos.x = Clamp2(PlayerPos.x, 0, WorldWidth);

​

        Frames++;

        Time = Frames / 60.0f; // Assuming 60 FPS.

    }

​

    // Jump function

    public void Jump()

    {

        PlayerVel.y = JumpHeight;

    }

​

    // Example usage (Entry Point)

    public static void Main(string[] args)

        {

           // Mock collision check for demonstration:

           Func<string, bool> mockCollisionCheck = (direction) =>

           {

                // Simulate a wall at x = 10 and x = 790

               if (direction == "left" && new PlatformerPhysics((s) => false).PlayerPos.x <= 10) return true;

               if (direction == "right" && new PlatformerPhysics((s) => false).PlayerPos.x >= 790) return true;

                return false;

           };

            PlatformerPhysics physics = new PlatformerPhysics(mockCollisionCheck);

            physics.WorldWidth = 800;

​

            Console.WriteLine($"Initial Position: ({physics.PlayerPos.x}, {physics.PlayerPos.y})");

            Console.WriteLine($"Initial Velocity: ({physics.PlayerVel.x}, {physics.PlayerVel.y})");

​

            // Simulate a few frames

            for (int i = 0; i < 60; i++)

            {

                physics.Update();

                Console.WriteLine($"Frame {i+1}: Position: ({physics.PlayerPos.x}, {physics.PlayerPos.y}), Velocity: ({physics.PlayerVel.x}, {physics.PlayerVel.y})");

            }

            physics.Jump();

            Console.WriteLine($"Jump! Velocity: ({physics.PlayerVel.x}, {physics.PlayerVel.y})");

                // Simulate a few frames after jump.

            for (int i = 0; i < 60; i++)

            {

              physics.Update();

              Console.WriteLine($"Frame {i+61}: Position: ({physics.PlayerPos.x}, {physics.PlayerPos.y}), Velocity: ({physics.PlayerVel.x}, {physics.PlayerVel.y})");

            }

        }

}