From 5424a1d5434e3ddd911a504719918c2df027e2fd Mon Sep 17 00:00:00 2001
From: rtk0c <mail.tianyig@gmail.com>
Date: Sun, 17 Apr 2022 20:08:57 -0700
Subject: Changeset: 8 Initial work on sprites and texture system

---
 source/Sprite.hpp | 98 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 source/Sprite.hpp

(limited to 'source/Sprite.hpp')

diff --git a/source/Sprite.hpp b/source/Sprite.hpp
new file mode 100644
index 0000000..ec25fbd
--- /dev/null
+++ b/source/Sprite.hpp
@@ -0,0 +1,98 @@
+#pragma once
+
+#include "CpuMesh.hpp"
+#include "Ires.hpp"
+#include "Mesh.hpp"
+#include "PodVector.hpp"
+#include "RcPtr.hpp"
+#include "Texture.hpp"
+
+#include <rapidjson/fwd.h>
+#include <glm/glm.hpp>
+#include <string>
+#include <string_view>
+#include <vector>
+
+class Sprite : public RefCounted {
+	friend class IresSpriteFiles;
+	friend class IresSpritesheet;
+
+private:
+	RcPtr<Texture> mAtlas;
+	glm::ivec2 mBoundingBox;
+	std::vector<Subregion> mFrames;
+
+public:
+	bool IsValid() const;
+	Texture* GetAtlas() const { return mAtlas.Get(); }
+	glm::ivec2 GetBoundingBox() const { return mBoundingBox; }
+	const decltype(mFrames)& GetFrames() const { return mFrames; }
+};
+
+class IresSpriteFiles : public IresObject {
+public:
+	RcPtr<Sprite> mInstance;
+	std::vector<std::string> spriteFiles;
+
+public:
+	IresSpriteFiles()
+		: IresObject(KD_SpriteFiles) {}
+
+	// NOTE: does not check whether all specified files have the same dimensions
+	bool IsValid() const;
+
+	Sprite* CreateInstance() const;
+	Sprite* GetInstance();
+	void InvalidateInstance();
+
+	void Write(rapidjson::Value& value, rapidjson::Document& root) const override;
+	void Read(const rapidjson::Value& value) override;
+};
+
+class IresSpritesheet : public IresObject {
+public:
+	RcPtr<Sprite> mInstance;
+	std::string spritesheetFile;
+	int sheetWSplit;
+	int sheetHSplit;
+
+public:
+	IresSpritesheet()
+		: IresObject(KD_Spritesheet) {}
+
+	bool IsValid() const;
+
+	static void ResplitSpritesheet(Sprite* sprite, int wSplit, int hSplit);
+
+	Sprite* CreateInstance() const;
+	Sprite* GetInstance();
+	void InvalidateInstance();
+
+	void Write(rapidjson::Value& value, rapidjson::Document& root) const override;
+	void Read(const rapidjson::Value& value) override;
+};
+
+class SpriteMesh {
+private:
+	RcPtr<GpuMesh> mMesh;
+	RcPtr<Sprite> mSprite;
+	PodVector<StandardVertex> mVertices;
+	PodVector<uint16_t> mIndices;
+	int mCurrentFrame = 0;
+	// # of frames per second
+	int mPlaybackSpeed = 5;
+
+public:
+	SpriteMesh(Sprite* sprite);
+
+	Sprite* GetSprite() const { return mSprite.Get(); }
+	GpuMesh* GetGpuMesh() const { return mMesh.Get(); }
+
+	int GetFrame() const { return mCurrentFrame; }
+	void SetFrame(int frame);
+	// Update as if a render frame has passed
+	void PlayFrame();
+
+	int GetPlaybackSpeed() const { return mPlaybackSpeed; }
+	void SetPlaybackSpeed(int speed);
+};
-- 
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