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POXNA Fighting Game Style Animation Looping Issue
 

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  1. POXNA Fighting Game Style Animation Looping Issue
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    <p>I've been working on this for quite some time looking for solutions in various places. I've used Nick Gravelyn's style of storing animations into a text file and am simply incrementing an index to change frames. The trouble I'm having is looping an animation once and only once, but for some reason the way that I know should work isn't working the way I thought it would. I can't for the life of me figure out why, unless it's very specific to how XNA works.</p> <p>Here is my code: </p> <pre class="lang-c# prettyprint-override"><code>private void UpdateAttack(KeyboardState current, KeyboardState last, GameTime gameTime) { if (current.IsKeyDown(Keys.S) &amp;&amp; last.IsKeyUp(Keys.S)) { neutralStandingKick(gameTime); } } private void neutralStandingKick(GameTime gameTime) { //timeSinceLastFrame += gameTime.ElapsedGameTime.Milliseconds; //Framerate control //if (timeSinceLastFrame &gt; millisecondsPerFrame) //Framerate control //{ //timeSinceLastFrame -= millisecondsPerFrame; //Framerate control if (mCurrentState != State.Kicking) { mCurrentState = State.Kicking; Position.Y = 200; loopOnce(25, 30); //Starts at frame 25, ends at 30 } //} } private void loopOnce(int min, int max) { if (currentImageIndex &gt; max || currentImageIndex &lt; min) //Checks to see if index out of range of current animation currentImageIndex = min; //Starts at the beginning of the animation for (int i = min; i &lt; max; i++) //Uses the range to determine when to stop { currentImageIndex++; } //Increments index each iteration that passes } </code></pre> <p>Edit: Here is the Draw method of this particular class</p> <pre class="lang-c# prettyprint-override"><code>public void Draw(SpriteBatch spriteBatch) { //Get the name of the current sprite to draw string spriteName = possibleImages[currentImageIndex]; //Use that to get the source rectangle Rectangle source = spriteSourceRectangles[spriteName]; //Send rectangle to a function to set the framesize for bounds checking getFrameSize(source); spriteBatch.Draw(theSpriteSheet, Position, source, Color.White); } private void getFrameSize(Rectangle frame) { frameSize = frame; //For bounds checking } </code></pre> <p>Why wouldn't this work?</p> <p>New Code (Gavin's Suggestion): </p> <pre class="lang-c# prettyprint-override"><code>private void UpdateAttack(KeyboardState current, KeyboardState last, GameTime gameTime) { const int min = 22; const int max = 30; timeSinceLastFrame += gameTime.ElapsedGameTime.Milliseconds; //Framerate control if (current.IsKeyDown(Keys.S) &amp;&amp; mCurrentState != State.Kicking) { mCurrentState = State.Kicking; currentImageIndex = min; } if (mCurrentState == State.Kicking) { if (timeSinceLastFrame &gt; millisecondsPerFrame) //Framerate control { timeSinceLastFrame -= millisecondsPerFrame; //Framerate control currentImageIndex++; } } if (currentImageIndex == max) mCurrentState = State.Idle; } </code></pre> <p>Method that calls UpdateAttack:</p> <pre class="lang-c# prettyprint-override"><code>public void Update(GameTime theGameTime, Game game) { KeyboardState aCurrentKeyboardState = Keyboard.GetState(); UpdateMovement(aCurrentKeyboardState); UpdateJump(aCurrentKeyboardState); UpdateAttack(aCurrentKeyboardState, mPreviousKeyboardState, theGameTime); UpdateStageBounds(game); mPreviousKeyboardState = aCurrentKeyboardState; } </code></pre> <p>It will loop the animation on holding the keyboard key "s" down. But it will not loop all 7 frames in 1 key press like it's supposed to. </p>
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    1. COWhats not working? Is it looping more than once or not looping at all?
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      1. POXNA Fighting Game Style Animation Looping Issue
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    2. COI apologize for not specifying. The problem is that when the key is pressed, it doesn't loop through the frames using the for loops. Instead, it is showing just 1 frame of the animation frozen into place. Possibly, the last frame as you stated below.
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