New particle system, mostly working, some small features missing.

editor/plugins/curve_editor_plugin.h

@@ -0,0 +1,66 @@
+#ifndef CURVE_EDITOR_PLUGIN_H
+#define CURVE_EDITOR_PLUGIN_H
+
+#include "editor/editor_node.h"
+#include "editor/editor_plugin.h"
+
+class CurveTextureEdit : public Control {
+
+	GDCLASS(CurveTextureEdit, Control);
+
+	struct Point {
+
+		float offset;
+		float height;
+		bool operator<(const Point &p_ponit) const {
+			return offset < p_ponit.offset;
+		}
+	};
+
+	bool grabbing;
+	int grabbed;
+	Vector<Point> points;
+	float max, min;
+
+	void _plot_curve(const Vector2 &p_a, const Vector2 &p_b, const Vector2 &p_c, const Vector2 &p_d);
+
+protected:
+	void _gui_input(const InputEvent &p_event);
+	void _notification(int p_what);
+	static void _bind_methods();
+
+public:
+	void set_range(float p_min, float p_max);
+	void set_points(const Vector<Vector2> &p_points);
+	Vector<Vector2> get_points() const;
+	virtual Size2 get_minimum_size() const;
+	CurveTextureEdit();
+};
+
+class CurveTextureEditorPlugin : public EditorPlugin {
+
+	GDCLASS(CurveTextureEditorPlugin, EditorPlugin);
+
+	CurveTextureEdit *curve_editor;
+	Ref<CurveTexture> curve_texture_ref;
+	EditorNode *editor;
+	ToolButton *curve_button;
+
+protected:
+	static void _bind_methods();
+	void _curve_changed();
+	void _undo_redo_curve_texture(const PoolVector<Vector2> &points);
+	void _curve_settings_changed();
+
+public:
+	virtual String get_name() const { return "CurveTexture"; }
+	bool has_main_screen() const { return false; }
+	virtual void edit(Object *p_node);
+	virtual bool handles(Object *p_node) const;
+	virtual void make_visible(bool p_visible);
+
+	CurveTextureEditorPlugin(EditorNode *p_node);
+	~CurveTextureEditorPlugin();
+};
+
+#endif // CURVE_EDITOR_PLUGIN_H