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https://github.com/Ellpeck/MLEM.git
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82 lines
No EOL
4.3 KiB
C#
82 lines
No EOL
4.3 KiB
C#
using System;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using Microsoft.Xna.Framework.Input;
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using MLEM.Animations;
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using MLEM.Misc;
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using MLEM.Startup;
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using MLEM.Textures;
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namespace Demos {
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public class AnimationDemo : Demo {
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private SpriteAnimationGroup group;
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private Direction2 facing = Direction2.Down;
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public AnimationDemo(MlemGame game) : base(game) {
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}
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public override void LoadContent() {
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base.LoadContent();
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var tex = LoadContent<Texture2D>("Textures/Anim");
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// create the four animations by supplying the time per frame, the texture and the four regions used
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var downAnim = new SpriteAnimation(0.2F, tex, new Rectangle(0, 0, 8, 8), new Rectangle(0, 8, 8, 8), new Rectangle(0, 16, 8, 8), new Rectangle(0, 24, 8, 8)) {Name = "Down"};
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var upAnim = new SpriteAnimation(0.2F, tex, new Rectangle(8, 0, 8, 8), new Rectangle(8, 8, 8, 8), new Rectangle(8, 16, 8, 8), new Rectangle(8, 24, 8, 8)) {Name = "Up"};
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var leftAnim = new SpriteAnimation(0.2F, tex, new Rectangle(16, 0, 8, 8), new Rectangle(16, 8, 8, 8), new Rectangle(16, 16, 8, 8), new Rectangle(16, 24, 8, 8)) {Name = "Left"};
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var rightAnim = new SpriteAnimation(0.2F, tex, new Rectangle(24, 0, 8, 8), new Rectangle(24, 8, 8, 8), new Rectangle(24, 16, 8, 8), new Rectangle(24, 24, 8, 8)) {Name = "Right"};
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// create a sprite animation group which manages a list of animations and figures out which one should
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// be playing right now based on supplied conditions
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// using a group isn't necessary, but highly recommended for things like character animations as it makes
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// it very easy to have different animations play at different times
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this.group = new SpriteAnimationGroup();
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// for example, the down animation should only play when we're facing down
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this.group.Add(downAnim, () => this.facing == Direction2.Down);
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this.group.Add(upAnim, () => this.facing == Direction2.Up);
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this.group.Add(leftAnim, () => this.facing == Direction2.Left);
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this.group.Add(rightAnim, () => this.facing == Direction2.Right);
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// you can also add a priority to an animation in the group (10 in this case, which is higher than the default of 0)
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// if two animations' playing conditions are both true, then the one with the higher priority will be picked to play
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// in this instance, a standing "animation" is displayed when we're facing down and also holding the space key
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this.group.Add(new SpriteAnimation(1F, tex, new Rectangle(0, 0, 8, 8)) {Name = "DownStanding"}, () => this.facing == Direction2.Down && this.InputHandler.IsKeyDown(Keys.Space), 10);
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// you can also add a callback to see when the animation used changes
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this.group.OnAnimationChanged += (anim, newAnim) => {
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Console.WriteLine("Changing anim from " + (anim?.Name ?? "None") + " to " + (newAnim?.Name ?? "None"));
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};
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}
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public override void Update(GameTime gameTime) {
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base.Update(gameTime);
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if (this.InputHandler.IsKeyDown(Keys.Down))
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this.facing = Direction2.Down;
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else if (this.InputHandler.IsKeyDown(Keys.Up))
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this.facing = Direction2.Up;
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else if (this.InputHandler.IsKeyDown(Keys.Left))
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this.facing = Direction2.Left;
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else if (this.InputHandler.IsKeyDown(Keys.Right))
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this.facing = Direction2.Right;
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// update the animation group
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// if not using a group, just update the animation itself here
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this.group.Update(gameTime);
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}
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public override void DoDraw(GameTime gameTime) {
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this.GraphicsDevice.Clear(Color.Black);
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this.SpriteBatch.Begin(SpriteSortMode.Deferred, null, SamplerState.PointClamp, transformMatrix: Matrix.CreateScale(10));
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// draw the group's current region
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// if not using a group, just draw the animation's CurrentRegion here
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this.SpriteBatch.Draw(this.group.CurrentRegion, new Vector2(10, 10), Color.White);
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this.SpriteBatch.End();
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base.DoDraw(gameTime);
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}
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}
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} |