revamp GridMap

src/utils/GridMap.cpp

@@ -0,0 +1,42 @@
+#include "GridMap.hpp"
+
+void DrawGridMap(Texture texture, Camera2D cam)
+{
+  Vector2 topLeft = GetScreenToWorld2D({0.0f, 0.0f}, cam);
+  Vector2 botRight = GetScreenToWorld2D({(float)GetScreenWidth(), (float)GetScreenHeight()}, cam);
+  float offsetX = (int)topLeft.x % texture.width;
+  float offsetY = (int)topLeft.y % texture.width;
+
+  DrawTextureTiled(
+    texture,
+    {offsetX, offsetY, (float)texture.width, (float)texture.height},
+    {topLeft.x, topLeft.y, botRight.x-topLeft.x, botRight.y-topLeft.y},
+    {0.0f, 0.0f}, 0.0f, 1.0f, WHITE
+  );
+}
+
+void DrawGridMapQuick(Texture texture, Vector2 offset)
+{
+  float offsetX = (int)offset.x % texture.width;
+  float offsetY = (int)offset.y % texture.width;
+
+  DrawTextureTiled(
+    texture,
+    {offsetX, offsetY, (float)texture.width, (float)texture.height},
+    {offset.x, offset.y, (float)GetScreenWidth(), (float)GetScreenHeight()},
+    {0.0f, 0.0f}, 0.0f, 1.0f, WHITE
+  );
+}
+
+Texture LoadDefaultGridMap()
+{
+  Image image = GenImageColor(100, 100, WHITE);
+  ImageDrawLine(&image, image.width*0.5f, 0, image.width*0.5f, image.height, {0, 0, 0, 120});
+  ImageDrawLine(&image, 0, image.height*0.5f, 100, image.height*0.5f, {0, 0, 0, 120});
+  ImageDrawRectangleLines(&image, {0.0f, 0.0f, (float)image.width, (float)image.height}, 1, {0, 0, 0, 180});
+
+  Texture tex = LoadTextureFromImage(image);
+  UnloadImage(image);
+
+  return tex;
+}

src/utils/GridMap.hpp

@@ -1,50 +1,20 @@
 #pragma once
 
-#include <cmath>
+#include "utils/RaylibDeprecated.hpp"
 #include <raylib.h>
 
-#include "utils/RaylibDeprecated.hpp"
+/**
+ * Draw GridMap using cam, use this inside BeginMode2D
+ * @param  {Texture} texture : 
+ * @param  {Camera2D} cam    : 
+ */
+void DrawGridMap(Texture texture, Camera2D cam);
 
-class GridMap
-{
-public:
-  GridMap()
-  {
-    Image image = GenImageColor(100, 100, WHITE);
-    ImageDrawLine(&image, image.width*0.5f, 0, image.width*0.5f, image.height, {0, 0, 0, 120});
-    ImageDrawLine(&image, 0, image.height*0.5f, 100, image.height*0.5f, {0, 0, 0, 120});
-    ImageDrawRectangleLines(&image, {0.0f, 0.0f, image.width - 2.0f, image.height - 2.0f}, 2, {0, 0, 0, 180});
+/**
+ * This is quick version without cam, does not support zoom
+ * @param  {Texture} texture : 
+ * @param  {Camera2D} cam    : 
+ */
+void DrawGridMapQuick(Texture texture, Vector2 offset);
 
-    texture = LoadTextureFromImage(image);
-    UnloadImage(image);
-  }
-
-  ~GridMap()
-  {
-    UnloadTexture(texture);
-  }
-
-
-  void Draw(Camera2D camera)
-  {
-    Vector2 topLeft = GetScreenToWorld2D({0.0f, 0.0f}, camera);
-    Vector2 botRight = GetScreenToWorld2D({(float)GetScreenWidth(), (float)GetScreenHeight()}, camera);
-
-    float SWidth = (std::ceil((botRight.x-topLeft.x) / texture.width) + 1) * texture.width;
-    float SHeight = (std::ceil((botRight.y-topLeft.y) / texture.height) + 1) * texture.height;
-
-    float SX = (std::ceil(topLeft.x / texture.width) - 1) * texture.width;
-    float SY = (std::ceil(topLeft.y / texture.height) - 1) * texture.height;
-
-    DrawTextureTiled(
-      texture,
-      {0.0f, 0.0f, (float)texture.width, (float)texture.height},
-      {SX, SY, SWidth, SHeight},
-      // {topLeft.x, topLeft.y, botRight.x-topLeft.x, botRight.y-topLeft.y},
-      {0.0f, 0.0f}, 0.0f, 1.0f, WHITE
-    );
-  }
-
-private:
-  Texture2D texture;
-};
+Texture LoadDefaultGridMap();