bro

include/td/display/state/NodeEditorState.h

@@ -0,0 +1,127 @@
+#pragma once
+
+#include <td/display/DisplayState.h>
+
+#include <imgui_node_editor.h>
+
+namespace ed = ax::NodeEditor;
+
+namespace td {
+
+class NodeEditorState : public DisplayState {
+  public:
+	enum class PinType {
+		Flow,
+		Bool,
+		Int,
+		Float,
+		String,
+		Object,
+		Function,
+		Delegate,
+	};
+
+	enum class PinKind { Output, Input };
+
+	enum class NodeType { Blueprint, Simple, Tree, Comment, Houdini };
+
+	struct Pin;
+
+	struct Node {
+		ed::NodeId ID;
+		std::string Name;
+		std::vector<Pin> Inputs;
+		std::vector<Pin> Outputs;
+		ImColor Color;
+		NodeType Type;
+		ImVec2 Size;
+
+		std::string State;
+		std::string SavedState;
+
+		Node(int id, const char* name, ImColor color = ImColor(255, 255, 255)) :
+			ID(id), Name(name), Color(color), Type(NodeType::Blueprint), Size(0, 0) {}
+	};
+
+	struct Pin {
+		ed::PinId ID;
+		::td::NodeEditorState::Node* Node;
+		std::string Name;
+		PinType Type;
+		PinKind Kind;
+
+		Pin(int id, const char* name, PinType type) : ID(id), Node(nullptr), Name(name), Type(type), Kind(PinKind::Input) {}
+	};
+
+	struct Link {
+		ed::LinkId ID;
+
+		ed::PinId StartPinID;
+		ed::PinId EndPinID;
+
+		ImColor Color;
+
+		Link(ed::LinkId id, ed::PinId startPinId, ed::PinId endPinId) :
+			ID(id), StartPinID(startPinId), EndPinID(endPinId), Color(255, 255, 255) {}
+	};
+
+	struct NodeIdLess {
+		bool operator()(const ed::NodeId& lhs, const ed::NodeId& rhs) const {
+			return lhs.AsPointer() < rhs.AsPointer();
+		}
+	};
+
+	int                  m_NextId = 1;
+    const int            m_PinIconSize = 24;
+    std::vector<Node>    m_Nodes;
+    std::vector<Link>    m_Links;
+    ImTextureID          m_HeaderBackground = 0;
+    ImTextureID          m_SaveIcon = 0;
+    ImTextureID          m_RestoreIcon = 0;
+    const float          m_TouchTime = 1.0f;
+    std::map<ed::NodeId, float, NodeIdLess> m_NodeTouchTime;
+    bool                 m_ShowOrdinals = false;
+
+
+  public:
+	NodeEditorState(Display& a_Display);
+	~NodeEditorState();
+
+	virtual void Update(float a_Delta) override;
+
+  private:
+	int GetNextId();
+	ed::LinkId GetNextLinkId();
+	void TouchNode(ed::NodeId id);
+	float GetTouchProgress(ed::NodeId id);
+	void UpdateTouch();
+	Node* FindNode(ed::NodeId id);
+	Link* FindLink(ed::LinkId id);
+	Pin* FindPin(ed::PinId id);
+	bool IsPinLinked(ed::PinId id);
+	bool CanCreateLink(Pin* a, Pin* b);
+	void BuildNode(Node* node);
+	Node* SpawnInputActionNode();
+	Node* SpawnBranchNode();
+	Node* SpawnDoNNode();
+	Node* SpawnOutputActionNode();
+	Node* SpawnPrintStringNode();
+	Node* SpawnMessageNode();
+	Node* SpawnSetTimerNode();
+	Node* SpawnLessNode();
+	Node* SpawnWeirdNode();
+	Node* SpawnTraceByChannelNode();
+	Node* SpawnTreeSequenceNode();
+	Node* SpawnTreeTaskNode();
+	Node* SpawnTreeTask2Node();
+	Node* SpawnComment();
+	Node* SpawnHoudiniTransformNode();
+	Node* SpawnHoudiniGroupNode();
+	void BuildNodes();
+	ImColor GetIconColor(PinType type);
+	void DrawPinIcon(const Pin& pin, bool connected, int alpha);
+	void ShowStyleEditor(bool* show = nullptr);
+	void ShowLeftPane(float paneWidth);
+};
+
+}  // namespace td

lib/imgui-node.lua

@@ -0,0 +1,6 @@
+
+target("imgui-node-editor")
+	set_kind("static")
+	add_files("imgui-node-editor/**.cpp")
+	add_includedirs("imgui-node-editor", {public = true})
+	add_packages("imgui")

src/main.cpp

@@ -1,12 +1,12 @@
 #include <chrono>
-#include <td/display/state/MainMenuState.h>
+#include <td/display/state/NodeEditorState.h>
 #include <td/misc/Time.h>
 
 int main(int argc, char** argv) {
 	// init GL context
 	td::Display display(1920, 1080, "Tower-Defense 2");
 
-	display.ChangeState<td::MainMenuState>();
+	display.ChangeState<td::NodeEditorState>();
 
 	td::Timer timer;
 	while (!display.IsCloseRequested()) {

xmake.lua

@@ -2,8 +2,7 @@ add_rules("mode.debug", "mode.release")
 
 add_repositories("persson-repo https://git.ale-pri.com/Persson-dev/xmake-repo.git")
 
-add_requires("imgui 1.92.0", {configs = {sdl3 = true, opengl3 = true}})
-add_requires("libsdl3 3.2.16", "splib 2.3.2", "zlib", "glew", "fpm", "enet6")
+add_requires("imgui[sdl3,opengl3] 1.92.1", "splib 2.3.2", "zlib", "glew", "fpm", "enet6")
 
 set_languages("c++20")
 
@@ -17,6 +16,8 @@ else
     set_policy("build.sanitizer.undefined", true)
 end
 
+includes("lib/*.lua")
+
 target("Tower-Defense2")
     add_includedirs("include", {public = true})
     set_kind("binary")
@@ -24,6 +25,7 @@ target("Tower-Defense2")
     add_packages("libsdl3", "imgui", "glew", "splib", "zlib", "fpm", "enet6", {public = true})
     set_rundir(".")
     add_defines("TD_GL_LOADER_GLEW")
+    add_deps("imgui-node-editor")
 
 
 -- Tests