From 6c4ecd35da17e07b743d4ef75e234383317d22ac Mon Sep 17 00:00:00 2001
From: ilotterytea <iltsu@alright.party>
Date: Sat, 18 Jan 2025 21:22:32 +0500
Subject: feat: new editor (wip) + using Camera2D

---
 src/editor.c | 26 +++++++++++++++++++++++++
 src/editor.h | 13 +++++++++++++
 src/level.h  |  5 +++++
 src/main.c   | 62 ++++++++++++++++++++----------------------------------------
 4 files changed, 65 insertions(+), 41 deletions(-)
 create mode 100644 src/editor.c
 create mode 100644 src/editor.h

diff --git a/src/editor.c b/src/editor.c
new file mode 100644
index 0000000..64f1673
--- /dev/null
+++ b/src/editor.c
@@ -0,0 +1,26 @@
+#include "editor.h"
+
+#include "raylib.h"
+
+void SE_DrawEditor(Editor *editor, Camera2D *camera) {
+  Vector2 mousePos = GetScreenToWorld2D(GetMousePosition(), *camera);
+  float zoom = camera->zoom;
+
+  for (int x = 0; x < editor->level->width; x++) {
+    for (int y = 0; y < editor->level->height; y++) {
+      float rx = x * zoom, ry = y * zoom;
+      Color innerColor = RAYWHITE;
+      Color borderColor = LIGHTGRAY;
+
+      // recolor the tile if the cursor above the tile
+      if ((rx < mousePos.x && mousePos.x < rx + zoom) &&
+          (ry < mousePos.y && mousePos.y < ry + zoom)) {
+        innerColor = SKYBLUE;
+        borderColor = BLUE;
+      }
+
+      DrawRectangle(rx, ry, zoom, zoom, innerColor);
+      DrawRectangleLines(rx, ry, zoom, zoom, borderColor);
+    }
+  }
+}
diff --git a/src/editor.h b/src/editor.h
new file mode 100644
index 0000000..0d7450e
--- /dev/null
+++ b/src/editor.h
@@ -0,0 +1,13 @@
+#include <raylib.h>
+
+#include "level.h"
+
+typedef struct {
+} EditorState;
+
+typedef struct {
+    Level *level;
+    EditorState state;
+} Editor;
+
+void SE_DrawEditor(Editor *editor, Camera2D *camera);
diff --git a/src/level.h b/src/level.h
index fe6ce1d..35e8cb8 100644
--- a/src/level.h
+++ b/src/level.h
@@ -1,3 +1,6 @@
+#ifndef __LEVEL_H__
+#define __LEVEL_H__
+
 typedef struct {
     int x, y;
 } Point;
@@ -14,3 +17,5 @@ typedef struct {
 Level *SE_CreateLevel(int width, int height);
 void SE_RenderLevel(Level *level, int zoomScale);
 void SE_FreeLevel(Level *level);
+
+#endif
diff --git a/src/main.c b/src/main.c
index a64fb0d..36ceb19 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,6 @@
 #include <stddef.h>
-#include <stdlib.h>
 
+#include "editor.h"
 #include "level.h"
 #include "raylib.h"
 
@@ -9,57 +9,37 @@ int main() {
   InitWindow(800, 600, "sillyeditor");
   SetTargetFPS(60);
 
-  int gridSize = 32;
-
   Level *level = SE_CreateLevel(30, 30);
+  Editor editor = {level, {}};
 
-  // creating a dummy side
-  Side *side = malloc(sizeof(Side));
-  side->a = (Point){1, 1};
-  side->b = (Point){3, 4};
-  level->sides[0] = side;
+  Camera2D camera = {0};
+  camera.target = (Vector2){0.0f, 0.0f};
+  camera.offset = (Vector2){0.0f, 0.0f};
+  camera.rotation = 0.0f;
+  camera.zoom = 4.0f;
 
   while (!WindowShouldClose()) {
-    // Change the grid size
     if (GetMouseWheelMove() != 0.0) {
-      gridSize += (int)(GetMouseWheelMove() * 4.0);
-    }
-
-    BeginDrawing();
-    ClearBackground(RAYWHITE);
-    DrawText("hi world!", GetScreenWidth() / 2 - 16 * 4,
-             GetScreenHeight() / 2 - 16, 32, BLACK);
-
-    SE_RenderLevel(level, gridSize);
+      camera.zoom += (int)GetMouseWheelMove();
 
-    // Drawing grid
-    for (int x = 0; x <= level->width; x++) {
-      DrawLine(x * gridSize, 0, x * gridSize, GetScreenHeight(), LIGHTGRAY);
+      if (camera.zoom > 6.0f)
+        camera.zoom = 6.0f;
+      else if (camera.zoom < 4.0f)
+        camera.zoom = 4.0f;
     }
 
-    for (int y = 0; y <= level->height; y++) {
-      DrawLine(0, y * gridSize, GetScreenWidth(), y * gridSize, LIGHTGRAY);
+    if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT)) {
+      Vector2 mousePos = GetMouseDelta();
+      camera.target.x -= mousePos.x / 5.0f;
+      camera.target.y -= mousePos.y / 5.0f;
     }
 
-    // Drawing points
-    for (int x = 0; x < level->width; x++) {
-      for (int y = 0; y < level->height; y++) {
-        Color color = GRAY;
-
-        for (int i = 0; i < level->height * level->width; i++) {
-          Side *side = level->sides[i];
-          if (side == NULL) continue;
-
-          if ((x == side->a.x && y == side->a.y) ||
-              (x == side->b.x && y == side->b.y)) {
-            color = RED;
-            break;
-          }
-        }
+    BeginDrawing();
+    ClearBackground(RAYWHITE);
 
-        DrawCircle(x * gridSize, y * gridSize, 4, color);
-      }
-    }
+    BeginMode2D(camera);
+    SE_DrawEditor(&editor, &camera);
+    EndMode2D();
 
     EndDrawing();
   }
-- 
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