public void AddAnimation(string animationKey, string textureName,
CelRange celRange, int celWidth, int celHeight,
int numberOfCels, int framesPerSecond)
{
CelAnimation ca = new CelAnimation(textureName, celRange, framesPerSecond);
if (!textures.ContainsKey(textureName))
{
textures.Add(textureName, content.Load <Texture2D>(contentPath + textureName));
}
ca.CelWidth = celWidth;
ca.CelHeight = celHeight;
ca.NumberOfCels = numberOfCels;
ca.CelsPerRow = textures[textureName].Width / celWidth;
if (animations.ContainsKey(animationKey))
{
animations[animationKey] = ca;
}
else
{
animations.Add(animationKey, ca);
}
}
public void DrawBottomCenter(float elapsedTime, string animationKey, SpriteBatch batch, int frame, Vector2 position, Color color)
{
if (!animations.ContainsKey(animationKey))
{
return;
}
CelAnimation ca = animations[animationKey];
//first get our x increase amount (add our offset-1 to our current frame)
int xincrease = (ca.Frame + ca.CelRange.FirstCelX - 1);
//now we need to wrap the value so it will loop to the next row
int xwrapped = xincrease % ca.CelsPerRow;
//finally we need to take the product of our wrapped value and a cel's width
int x = xwrapped * ca.CelWidth;
//to determine how much we should increase y, we need to look at how much we
//increased x and do an integer divide
int yincrease = xincrease / ca.CelsPerRow;
//now we can take this increase and add it to our Y offset-1 and multiply the sum by
//our cel height
int y = (yincrease + ca.CelRange.FirstCelY - 1) * ca.CelHeight;
Rectangle cel = new Rectangle(x, y, ca.CelWidth, ca.CelHeight);
Vector2 orgin = new Vector2((ca.CelWidth / 2), (ca.CelHeight));
batch.Draw(textures[ca.TextureName], position, cel, color, 0.0f, orgin, 1.0f, SpriteEffects.None, 0f);
//batch.Draw(textures[ca.TextureName], position, cel, color);
}
public Rectangle GetCurrentDrawRect(float elapsedTime, string animationKey, float scale)
{
if (!animations.ContainsKey(animationKey))
{
throw new Exception("animationKey not found");
}
CelAnimation ca = animations[animationKey];
//first get our x increase amount (add our offset-1 to our current frame)
int xincrease = (ca.Frame + ca.CelRange.FirstCelX - 1);
//now we need to wrap the value so it will loop to the next row
int xwrapped = xincrease % ca.CelsPerRow;
//finally we need to take the product of our wrapped value and a cel's width
int x = xwrapped * ca.CelWidth;
//to determine how much we should increase y, we need to look at how much we
//increased x and do an integer divide
int yincrease = xincrease / ca.CelsPerRow;
//now we can take this increase and add it to our Y offset-1 and multiply the sum by
//our cel height
int y = (yincrease + ca.CelRange.FirstCelY - 1) * ca.CelHeight;
Rectangle cel = new Rectangle(x, y,
(int)(ca.CelWidth),
(int)(ca.CelHeight));
return(cel);
}
public override void Update(GameTime gameTime)
{
foreach (KeyValuePair <string, CelAnimation> animation in animations)
{
CelAnimation ca = animation.Value;
if (ca.Paused)
{
continue; //no need to update this animation, check next one
}
ca.TotalElapsedTime += (float)gameTime.ElapsedGameTime.TotalSeconds;
if (ca.TotalElapsedTime > ca.TimePerFrame)
{
ca.Frame++;
//min: 0, max: total cels
if (ca.Frame >= ca.NumberOfCels)
{
ca.LoopCount++;
}
ca.Frame = ca.Frame % (ca.NumberOfCels);
//reset our timer
ca.TotalElapsedTime -= ca.TimePerFrame;
}
}
base.Update(gameTime);
}
public void Draw(float elapsedTime, string animationKey,
SpriteBatch batch, int frame, Vector2 position, Color color)
{
if (!animations.ContainsKey(animationKey))
{
return;
}
CelAnimation ca = animations[animationKey];
Rectangle cel = this.GetCurrentDrawRect(elapsedTime, animationKey);
//Vector2 orgin = new Vector2((ca.CelWidth / 2), (ca.CelHeight / 2));
//batch.Draw(textures[ca.TextureName], position, cel, color, 0.0f, orgin, 1.0f, SpriteEffects.None, 0f);
batch.Draw(textures[ca.TextureName], position, cel, color);
}
/// <summary>
/// Get the current loop count for and aniamtion
/// </summary>
/// <param name="animationKey">Name of animation</param>
/// <returns></returns>
public int GetLoopCount(string animationKey)
{
CelAnimation ca = animations[animationKey];
return(ca.LoopCount);
}