I'm creating a fairly simple C# Monogame project using visual studios 2019. I am getting a stack overflow error but it breaks on random lines each time I debug. Sometimes it'll break just on a "{". I think I've had weird errors like this before that seem like something messed up in the lower level code I don't have access to. I've already tried clean code, rebuild project, closing solutions, unloading/reloading project, and restarting my pc. Can anyone help me out?
So I found which code block is breaking somehow.
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;
namespace Project1
{
class Map
{
public Vector2 Player;
public Vector2 Destination;
public GameState gamestate = new GameState();
public int Rows { get; set; }
public int Cols { get; set; }
private SpriteBatch spriteBatch;
private Texture2D texture;
private Color[] colors;
private bool[,] state;
private bool[,] next_state;
private Random random = new Random();
public Map(GraphicsDevice graphicsDevice, SpriteBatch spriteBatch, int rows, int cols)
{
texture = new Texture2D(graphicsDevice, cols, rows);
this.spriteBatch = spriteBatch;
colors = new Color[rows * cols];
state = new bool[rows, cols];
next_state = new bool[rows, cols];
this.Rows = rows;
this.Cols = cols;
Player = new Vector2(random.Next(Cols), random.Next(Rows));
Destination = new Vector2(random.Next(Cols), random.Next(Rows));
gamestate.Reset();
}
public void Randomize()
{
Player = new Vector2(random.Next(Cols), random.Next(Rows));
Destination = new Vector2(random.Next(Cols), random.Next(Rows));
for (int r = 0; r < Rows; r )
{
for (int c = 0; c < Cols; c )
{
int ran = random.Next(3);
if (ran == 1) next_state[r, c] = true;
else next_state[r, c] = false;
}
}
next_state[(int)Player.Y, (int)Player.X] = true;
next_state[(int)Destination.Y, (int)Destination.X] = true;
Apply();
}
int neighbors;
public void Step()
{
for (int r = 0; r < Rows; r )
{
for (int c = 0; c < Cols; c )
{
neighbors = 0;
if (r < Rows - 1 && state[r 1, c]) neighbors ;
if (c < Cols - 1 && state[r, c 1]) neighbors ;
if (r > 0 && state[r - 1, c]) neighbors ;
if (c > 0 && state[r, c - 1]) neighbors ;
if (r < Rows - 1 && c < Cols - 1 && state[r 1, c
1]) neighbors ;
if (r > 0 && c > 0 && state[r - 1, c - 1]) neighbors ;
if (r < Rows - 1 && c > 0 && state[r 1, c - 1]) neighbors ;
if (r > 0 && c < Cols - 1 && state[r - 1, c 1]) neighbors ;
if (state[r, c] == true)
{
if (neighbors < 2 || neighbors > 3)
next_state[r, c] = false;
}
else
{
if (neighbors == 3) next_state[r, c] = true;
}
}
}
gamestate.Moves ;
Apply();
}
public void Apply()
{
int i = 0;
state = next_state;
for (int r = 0; r < Rows; r )
{
for (int c = 0; c < Cols; c )
{
if (state[r, c] == true) colors[i] = Color.Black;
else colors[i] = Color.White;
if (state[r, c] == true && Player == new Vector2(c, r)) colors[i] = Color.Red;
else if (state[r, c] == false && Player == new Vector2(c, r)) colors[i] = Color.Green;
if (Destination == new Vector2(c, r)) colors[i] = Color.Blue;
i ;
}
}
texture.SetData(colors);
if (Player == Destination)
{
gamestate.Level ;
gamestate.SaveState();
gamestate.Reset();
Randomize();
}
if (state[(int)Player.Y, (int)Player.X])
{
gamestate.Level = 0;
Randomize();
}
}
Vector2 size_to_draw;
Vector2 position_to_draw;
Rectangle rectangle_to_draw;
public void Draw()
{
size_to_draw = new Vector2(Cols * 15, Rows * 15);
position_to_draw = new Vector2((Game1.screen.X - size_to_draw.X) / 2, (Game1.screen.Y - size_to_draw.Y) / 2);
rectangle_to_draw = new Rectangle((int)position_to_draw.X, (int)position_to_draw.Y, (int)size_to_draw.X, (int)size_to_draw.Y);
spriteBatch.Draw(texture, rectangle_to_draw, Color.White);
gamestate.DrawData(spriteBatch);
}
}
}
When I take out
if (Player == Destination)
{
gamestate.Level ;
gamestate.SaveState();
gamestate.Reset();
Randomize();
}
if (state[(int)Player.Y, (int)Player.X])
{
gamestate.Level = 0;
Randomize();
}
from the Apply() method it lets me run the program. Here is the gamestate class:
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System.Collections.Generic;
namespace Project1
{
class GameState
{
public float Clock { get; set; }
public int Level { get; set; }
public int Moves { get; set; }
public List<SaveState> saves = new List<SaveState>();
public void SaveState()
{
saves.Add(new SaveState(Level, Moves, Clock));
}
public void Reset()
{
Clock = 0;
Moves = 0;
}
public void DrawData(SpriteBatch spriteBatch)
{
for (int i = 0; i < saves.Count; i )
{
spriteBatch.DrawString(Game1.font, saves[(saves.Count - 1) - i].String, new Vector2(10, 10 (30 * i)), Color.White);
}
}
}
struct SaveState
{
public SaveState(int level, int moves, float time)
{
Level = level;
Moves = moves;
Timestamp = time;
String = " Level: " Level " Moves: " Moves " Time: " Timestamp;
}
int Level;
int Moves;
float Timestamp;
public string String;
}
}
CodePudding user response：
Randomize() calls Apply() and the code you removed from Apply() to make it work calls Randomize(). Since all those (infinite) method calls are pushed on the stack you will eventually get a stack overflow.