alysbrooks-public » games » isometric-park-fna

Location: alysbrooks-public/games/isometric-park-fna/isometric-park-fna/Camera.cs

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Commit Description:
Start decoupling input....
Commit Description:
Start decoupling input. (grafted from c917ecbef5cd2ff3893c85b443a84b706f293554)
References:
r170:7ca17e8b6a7c add-encompass
File last commit:
r48:a68330329b8f default
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isometric-park-fna/Camera.cs
109 lines | 2.8 KiB | text/x-csharp | CSharpLexer
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using System;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
namespace isometricparkfna
{
public class Camera
{
public Vector2 position;
float _zoom;
float[] zoom_levels;
public static int world_width { get; set; }
public static int world_height { get; set; }
public static Vector2 display_offset { get; set; }
public float zoom
{
get { return _zoom; }
set { _zoom = value; if (zoom < 0.1f) _zoom = 0.1f; } // Negative zoom will flip image
}
public Camera()
{
this.zoom = 1.0f;
position = Vector2.Zero;
}
public Camera(float[] zoomLevels)
{
this.zoom = 1.0f;
position = Vector2.Zero;
this.zoom_levels = zoomLevels;
}
public void Move(Vector2 change)
{
this.position += change;
}
public void Jump (Vector2 change)
{
this.position = change;
}
public Matrix get_transformation(GraphicsDevice graphicsDevice)
{
Viewport viewPort = graphicsDevice.Viewport;
Matrix transformation = Matrix.CreateTranslation(new Vector3(-this.position.X, -this.position.Y, 0)) *
Matrix.CreateScale(new Vector3(this.zoom, this.zoom, 1)) *
Matrix.CreateTranslation(new Vector3(viewPort.Width * 0.5f, viewPort.Height * 0.5f, 0));
return transformation;
}
public Vector2 world_to_screen(Vector2 worldPosition)
{
return worldPosition - this.position + Camera.display_offset;
}
public Vector2 screen_to_world(Vector2 screenPosition)
{
return screenPosition + this.position - Camera.display_offset;
}
public float ZoomIn()
{
float next_level;
foreach (float level in this.zoom_levels)
{
if(level > this.zoom)
{
next_level = level;
this.zoom = next_level;
return next_level;
}
}
return this.zoom;
}
public float ZoomOut()
{
float next_level;
foreach (float level in this.zoom_levels.Reverse())
{
if (level < this.zoom)
{
next_level = level;
this.zoom = next_level;
return next_level;
}
}
return this.zoom;
}
}
}