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Try to imlement [ and ], but it's not quite right yet?

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This commit is contained in:
Starbeamrainbowlabs 2018-11-04 13:55:27 +00:00
parent f7393f3949
commit 8fcadb007f
Signed by: sbrl
GPG key ID: 1BE5172E637709C2
4 changed files with 90 additions and 53 deletions
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19
SimpleTurtle/Area.cs Normal file
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@ -0,0 +1,19 @@
using System;
namespace SBRL.SimpleTurtle
{
public class Area
{
public double X;
public double Y;
public double Width;
public double Height;
public Area(double inX, double inY, double inWidth, double inHeight)
{
X = inX;
Y = inY;
Width = inWidth;
Height = inHeight;
}
}
}

2
SimpleTurtle/Help.txt
View file

@ -23,6 +23,8 @@ Input File Format:
h Also move forwards
+ Turn clockwise
- Turn anti-clockwise
[ Save position & heading to stack
] Restore position & heading from stack
Turtle Directives:
angle Sets the angle by which the turtle should turn. Note that this is specified in radians.

1
SimpleTurtle/SimpleTurtle.csproj
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@ -42,6 +42,7 @@
<Compile Include="LSystemEngine.cs" />
<Compile Include="Utilities\EmbeddedFiles.cs" />
<Compile Include="Utilities\Timer.cs" />
<Compile Include="Area.cs" />
</ItemGroup>
<ItemGroup>
<EmbeddedResource Include="Help.txt">

121
SimpleTurtle/Turtle.cs
View file

@ -6,44 +6,40 @@ using System.Collections.Generic;
namespace SBRL.SimpleTurtle
{
public class Area
{
public double X;
public double Y;
public double Width;
public double Height;
public class TurtleState : ICloneable {
public PointD Position;
public double Heading;
public Area(double inX, double inY, double inWidth, double inHeight)
{
X = inX;
Y = inY;
Width = inWidth;
Height = inHeight;
public TurtleState(PointD inPosition, double inHeading) {
Position = inPosition;
Heading = inHeading;
}
public object Clone() {
return new TurtleState(Position, Heading);
}
}
public class Turtle
{
private bool strictMode = false;
public bool StrictMode = false;
private string commandQueue;
private PointD position;
private readonly Stack<TurtleState> states = new Stack<TurtleState>();
public PointD Position {
get => states.Peek().Position;
protected set => states.Peek().Position = value;
}
public double Heading {
get => states.Peek().Heading;
protected set => states.Peek().Heading = value;
}
private Area bounds;
private double heading;
private double headingStep;
public double HeadingStep
{
get { return headingStep; }
set { headingStep = value; }
}
private double movementStep ;
public double MovementStep
{
get { return movementStep; }
set { movementStep = value; }
}
public Turtle ()
{
public double HeadingStep { get; set; }
public double MovementStep { get; set; }
public Turtle () {
Reset();
}
@ -83,15 +79,21 @@ namespace SBRL.SimpleTurtle
case '-':
Turn(true);
break;
case '[':
Save();
break;
case ']':
Restore();
break;
default:
if (strictMode) {
if (StrictMode) {
Console.WriteLine("The unexpected character '{0}' slipped through the net!", ch);
return false;
}
break;
}
}
else if(strictMode)
else if(StrictMode)
{
Console.Error.WriteLine("Error: unexpected character '{0}'", ch);
return false;
@ -105,28 +107,28 @@ namespace SBRL.SimpleTurtle
{
ImageSurface canvas = new ImageSurface(Format.ARGB32, (int)Math.Ceiling(bounds.Width + 10), (int)Math.Ceiling(bounds.Height + 10));
Context context = new Context(canvas);
position = new PointD(-bounds.X + 5, -bounds.Y + 5);
heading = 0;
Position = new PointD(-bounds.X + 5, -bounds.Y + 5);
Heading = 0;
context.LineWidth = 3;
context.MoveTo(position);
context.MoveTo(Position);
foreach(char ch in commandQueue)
{
switch(ch)
{
case 'f':
PointD newPosition = new PointD(
position.X + movementStep * Math.Sin(heading),
position.Y + movementStep * Math.Cos(heading)
Position.X + MovementStep * Math.Sin(Heading),
Position.Y + MovementStep * Math.Cos(Heading)
);
context.LineTo(newPosition);
position = newPosition;
Position = newPosition;
break;
case '+':
heading += headingStep;
Heading += HeadingStep;
break;
case '-':
heading -= headingStep;
Heading -= HeadingStep;
break;
}
}
@ -142,44 +144,57 @@ namespace SBRL.SimpleTurtle
public void Forwards()
{
PointD newPosition = new PointD(
position.X + MovementStep * Math.Sin(heading),
position.Y + MovementStep * Math.Cos(heading)
Position.X + MovementStep * Math.Sin(Heading),
Position.Y + MovementStep * Math.Cos(Heading)
);
if (newPosition.X > bounds.X + bounds.Width)
bounds.Width += newPosition.X - position.X;
bounds.Width += newPosition.X - Position.X;
if (newPosition.Y > bounds.Y + bounds.Height)
bounds.Height += newPosition.Y - position.Y;
bounds.Height += newPosition.Y - Position.Y;
if (newPosition.X < bounds.X)
{
bounds.X = newPosition.X;
bounds.Width += position.X - newPosition.X;
bounds.Width += Position.X - newPosition.X;
}
if (newPosition.Y < bounds.Y)
{
bounds.Y = newPosition.Y;
bounds.Height += position.Y - newPosition.Y;
bounds.Height += Position.Y - newPosition.Y;
}
position = newPosition;
Position = newPosition;
}
public void Turn(bool anticlockwise = false)
{
if (!anticlockwise)
heading += HeadingStep;
Heading += HeadingStep;
else
heading -= HeadingStep;
Heading -= HeadingStep;
}
public void Save()
{
states.Push(states.Peek().Clone() as TurtleState);
}
public bool Restore() {
if (states.Count <= 1)
return false;
states.Pop();
return true;
}
public void Reset()
{
states.Clear();
states.Push(new TurtleState(new PointD(0, 0), 0));
commandQueue = string.Empty;
position = new PointD(0, 0);
bounds = new Area(position.X, position.Y, 1, 1);
heading = 0;
headingStep = Math.PI / 2;
movementStep = 25;
bounds = new Area(Position.X, Position.Y, 1, 1);
HeadingStep = Math.PI / 2;
MovementStep = 25;
}
}
}