feat: code editor in editor

README.md

@@ -13,12 +13,15 @@ Come back later, sorry! Jenjin is not ready for real usage.
 - [x] Scripting (Lua)
 - [x] Transparency on sprites
 - [x] Icons everywhere
-- [ ] Code editor in the editor
+- [x] Code editor in the editor
+- [ ] Autocompletion in the editor
 - [ ] Dynamic data attached to game objects at runtime
 - [ ] Hierarchy and `.Parent` in Lua along with `workspace` (e.g. `Workspace.MyGameObject.Parent` == `Workspace`)
 
 ## TODO (Future)
 - [ ] Serialization/Deserialization of scenes to better formats
+- [ ] Syntax highlighting in the editor
+- [ ] Sprite animations
 - [ ] Scripting (Python)
 - [ ] Physics engine
 - [ ] Instancing

engine/include/jenjin/camera.h

@@ -4,6 +4,7 @@
 
 #include <glm/fwd.hpp>
 #include <glm/glm.hpp>
+#include <glm/gtc/type_ptr.hpp>
 
 namespace Jenjin {
 // 2D Orthographic Camera
@@ -34,15 +35,22 @@ class Camera {
   glm::vec3 *GetPositionPointer() { return &position; }
   float *GetZoomPointer() { return &zoom; }
   float *GetRotationPointer() { return &rotation; }
+  glm::vec3 *GetBackgroundPointer() { return &background; }
+
+  glm::mat4 *GetProjetionPointer() { return &this->projection; }
+
+  glm::vec2 size;
 
 private:
   Shader *shader;
 
-  glm::vec3 position;
+  glm::vec3 position = glm::vec3(0, 0, 0);
   float rotation;
   float zoom;
 
   glm::mat4 projection;
   glm::mat4 view;
+
+  glm::vec3 background = glm::vec3(0.15, 0.15, 0.15);
 };
 } // namespace Jenjin

engine/include/jenjin/editor/editor.h

@@ -29,6 +29,7 @@ class Manager {
   void show_all(Jenjin::Scene *scene);
 
 	bool hasProjectOpen = false;
+	int renderTexture = -1;
 
 private:
   Jenjin::GameObject *selectedObject = nullptr;

engine/include/jenjin/editor/widgets.h

@@ -1,9 +1,12 @@
 #pragma once
 
 #include "jenjin/gameobject.h"
+#include "jenjin/camera.h"
 
 namespace Jenjin::Editor::Widgets {
-bool transformWidget(
+void transformWidget(
     Jenjin::GameObject::Transform
         *transform);
+
+void cameraWidget(Jenjin::Camera *camera);
 };

engine/include/jenjin/target.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <glm/glm.hpp>
+#include <imgui.h>
 
 namespace Jenjin {
 // A "Target" is somewhere for the engine to render to. This class is completely
@@ -24,6 +25,9 @@ class Target {
   // Get the mouse position
   virtual glm::vec2 GetMousePosition() { return glm::vec2(-1, -1); };
 
+	// Set the window position (information) usually used for the editor
+	virtual void SetWindowPosition(ImVec2) {};
+
   // Does the target respond to events of the window resizing
   virtual bool RespondsToWindowResize() { return true; };
 };

engine/include/jenjin/targets/editor.h

@@ -20,11 +20,14 @@ class EditorTarget : public Jenjin::Target {
   virtual glm::vec2 GetMousePosition() override;
 
   virtual bool RespondsToWindowResize() override;
+	virtual void SetWindowPosition(ImVec2 pos) override;
 
   Jenjin::Framebuffer renderTexture;
   int width, height;
 
   Jenjin::Editor::Manager editor;
+
+	ImVec2 pos;
 };
 } // namespace Targets
 } // namespace Jenjin

engine/src/camera.cpp

@@ -24,6 +24,8 @@ Camera::Camera(Shader *shader, glm::vec2 size) : shader(shader) {
 }
 
 void Camera::Resize(glm::vec2 size) {
+	this->size = size;
+
   float aspectRatio = size.x / size.y;
   float inverseZoom =
       1.0f /
@@ -35,7 +37,6 @@ void Camera::Resize(glm::vec2 size) {
 }
 
 void Camera::Update() {
-  // include rotation
   view =
       glm::translate(glm::mat4(1.0f), -position) *
       glm::rotate(glm::mat4(1.0f), glm::radians(rotation), glm::vec3(0, 0, 1));