1 files changed, 58 insertions, 0 deletions
diff --git a/themes/src/autumn/LeafParticleRender.h b/themes/src/autumn/LeafParticleRender.h
new file mode 100644
index 0000000..f6efe1f
--- /dev/null
+++ b/themes/src/autumn/LeafParticleRender.h
@@ -0,0 +1,58 @@
+#include "../Renderer2d.h"
+#include "../mathlib.h"
+#include "../types.h"
+
+struct TreeShapeLoadResult;
+
+struct LeafParticleLoadData {
+    Vector2 initPosition;
+    Vector4 initColor;
+    int numLeaves = 48;
+};
+
+enum LeafParticleState {
+    OnTree,
+    Falling,
+    OnGround,
+    Remerging
+};
+
+struct LeafParticleUpdateData {
+    LeafParticleState state = LeafParticleState::Remerging;
+
+    Vertex2D* vertexToFollow = NULL;
+    Vector4 color = Vector4(1.f, 0.f, 0.f, 0.f);
+    f32 scale = 1.f;
+
+    f32 timeElapsedSeconds = 0.f;
+    i32 fallChance = -1;
+    Vector2 fallPosition;
+    f32 fallVerticalVelocity;
+    f32 fallHorizontalFrequency;
+    
+    f32 resetTime = 0.f;
+
+    Vertex2D* vertexPtr = NULL;
+};
+
+struct LeafParticleRender {
+    f32 elapsedTimeSeconds = 0.5;
+    f32 fallIntervalSeconds = 1.f;
+
+    // Update data
+    i32 numLeaves = 0;
+
+    LeafParticleUpdateData* updateData = NULL;
+    Vertex2D* vertices = NULL;
+
+    // Render data
+	u32 vao;
+	u32 vbo;
+	u32 numVertices = 0;
+	Mat4x4 model;
+
+    void load(Renderer2d* renderer, TreeShapeLoadResult* lr);
+	void update(f32 dtSeconds);
+	void render(Renderer2d* renderer);
+	void unload();
+};
+\ No newline at end of file