3 files changed, 136 insertions, 0 deletions
diff --git a/source/resources/sprites/BlockFrames.cs b/source/resources/sprites/BlockFrames.cs
new file mode 100644
index 0000000..33db3e8
--- /dev/null
+++ b/source/resources/sprites/BlockFrames.cs
@@ -0,0 +1,53 @@
+using System;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.TextureAtlases;
+
+namespace Celesteia.Resources.Sprites {
+    public class BlockFrames {
+        private readonly Vector2 _scaling;
+
+        private BlockFrame[] _frames;
+
+        private bool _doDraw;
+        public bool DoDraw => _doDraw;
+
+        public BlockFrames(TextureAtlas atlas, int startIndex, int frameCount, Vector2? origin = null) {
+            _doDraw = frameCount > 0;
+
+            _scaling = new Vector2(ResourceManager.SPRITE_SCALING);
+
+            _frames = new BlockFrame[frameCount];
+            for (int i = 0; i < frameCount; i++) {
+                _frames[i] = new BlockFrame(atlas.GetRegion(startIndex + i), _scaling, origin);
+            }
+        }
+
+        public BlockFrame GetFrame(int index) {
+            if (!_doDraw) return null;
+            
+            return _frames[index % _frames.Length];
+        }
+
+        public BlockFrame GetProgressFrame(float progress) {
+            return GetFrame((int)MathF.Round(progress * (_frames.Length - 1)));
+        }
+    }
+
+    public class BlockFrame {
+        private TextureRegion2D _region;
+        private Vector2 _scaling;
+        private Vector2 _origin;
+
+        public BlockFrame(TextureRegion2D region, Vector2 scaling, Vector2? origin = null) {
+            _region = region;
+            _scaling = scaling;
+            _origin = origin.HasValue ? origin.Value : Vector2.Zero;
+        }
+
+        public void Draw(int index, SpriteBatch spriteBatch, Vector2 position, Color color, float depth = 0f)
+        => spriteBatch.Draw(_region, position, color, 0f, _origin, _scaling, SpriteEffects.None, depth);
+        
+        public TextureRegion2D GetRegion() => _region;
+    }
+}
+\ No newline at end of file
diff --git a/source/resources/sprites/EntityFrames.cs b/source/resources/sprites/EntityFrames.cs
new file mode 100644
index 0000000..65e31ee
--- /dev/null
+++ b/source/resources/sprites/EntityFrames.cs
@@ -0,0 +1,32 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.TextureAtlases;
+
+namespace Celesteia.Resources.Sprites {
+    public class EntityFrames {
+        public SpriteEffects Effects;
+
+        public int Frame;
+
+        private readonly Vector2 _scaling;
+
+        private TextureRegion2D[] _frames;
+
+        public EntityFrames(TextureAtlas atlas, int startIndex, int frameCount, float scaling) {
+            _scaling = new Vector2(scaling);
+
+            _frames = new TextureRegion2D[frameCount];
+            for (int i = 0; i < frameCount; i++) {
+                _frames[i] = atlas.GetRegion(startIndex + i);
+            }
+        }
+
+        private Vector2 GetOrigin(TextureRegion2D frame) {
+            return new Vector2(0.5f * frame.Width, 0.5f * frame.Height);
+        }
+
+        public void Draw(int index, SpriteBatch spriteBatch, Vector2 position, Vector2 scale, Color color) {
+            spriteBatch.Draw(_frames[Frame % _frames.Length], position, color, 0f, GetOrigin(_frames[index % _frames.Length]), _scaling * scale, Effects, 0f, null);
+        }
+    }
+}
+\ No newline at end of file
diff --git a/source/resources/sprites/SkyboxPortionFrames.cs b/source/resources/sprites/SkyboxPortionFrames.cs
new file mode 100644
index 0000000..dc26156
--- /dev/null
+++ b/source/resources/sprites/SkyboxPortionFrames.cs
@@ -0,0 +1,51 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using MonoGame.Extended.TextureAtlases;
+
+namespace Celesteia.Resources.Sprites {
+    public class SkyboxPortionFrames {
+        private readonly Vector2 _scaling;
+
+        private TextureAtlas _atlas;
+        private int _start;
+        private int _count;
+
+        private TextureRegion2D[] _frames;
+        private Color _color;
+        private float _depth;
+
+        public SkyboxPortionFrames(TextureAtlas atlas, int size, int startIndex, int frameCount) {
+            _atlas = atlas;
+            _start = startIndex;
+            _count = frameCount;
+            _scaling = new Vector2(ResourceManager.SPRITE_SCALING) / 2f;
+
+            _frames = new TextureRegion2D[frameCount];
+            for (int i = 0; i < frameCount; i++) {
+                _frames[i] = atlas.GetRegion(startIndex + i);
+            }
+        }
+
+        public SkyboxPortionFrames SetColor(Color color) {
+            _color = color;
+            return this;
+        }
+
+        public SkyboxPortionFrames SetDepth(float depth) {
+            _depth = depth;
+            return this;
+        }
+
+        private Vector2 GetOrigin(TextureRegion2D frame) {
+            return new Vector2(0.5f * frame.Width, 0.5f * frame.Height);
+        }
+
+        public void Draw(int index, SpriteBatch spriteBatch, Vector2 position, float rotation, Vector2 scale) {
+            spriteBatch.Draw(_frames[index % _frames.Length], position, _color, rotation, GetOrigin(_frames[index % _frames.Length]), scale * _scaling, SpriteEffects.None, _depth, null);
+        }
+        
+        public SkyboxPortionFrames Clone() {
+            return new SkyboxPortionFrames(_atlas, 0, _start, _count).SetColor(_color).SetDepth(_depth);
+        }
+    }
+}
+\ No newline at end of file