From c98985fd3a426ebca5733cc02d3ad9fd26a3b72b Mon Sep 17 00:00:00 2001
From: Justin Scofield <justin.scofield@outlook.com>
Date: Wed, 20 Jul 2022 22:13:13 -0400
Subject: [PATCH] Added CreateTiles function very important

---
 src/app/gfx/bitmap.cc | 32 ++++++++++++++++++++++++++++++++
 src/app/gfx/bitmap.h  |  8 ++++++--
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/src/app/gfx/bitmap.cc b/src/app/gfx/bitmap.cc
index 0d00bba3..892cf471 100644
--- a/src/app/gfx/bitmap.cc
+++ b/src/app/gfx/bitmap.cc
@@ -24,6 +24,21 @@ Bitmap::Bitmap(int width, int height, int depth, uchar *data)
   surface_->pixels = data;
 }
 
+Bitmap::Bitmap(int width, int height, int depth, int data_size)
+    : width_(width), height_(height), depth_(depth), data_size_(data_size) {
+  surface_ = SDL_CreateRGBSurfaceWithFormat(0, width, height, depth,
+                                            SDL_PIXELFORMAT_INDEX8);
+  // Default grayscale palette
+  for (int i = 0; i < 8; i++) {
+    surface_->format->palette->colors[i].r = i * 31;
+    surface_->format->palette->colors[i].g = i * 31;
+    surface_->format->palette->colors[i].b = i * 31;
+  }
+
+  pixel_data_ = (uchar *)SDL_malloc(data_size);
+  surface_->pixels = pixel_data_;
+}
+
 void Bitmap::Create(int width, int height, int depth, uchar *data) {
   width_ = width;
   height_ = height;
@@ -77,6 +92,23 @@ void Bitmap::CreateTexture(std::shared_ptr<SDL_Renderer> renderer) {
 
 void Bitmap::ApplyPalette(const SNESPalette &palette) { palette_ = palette; }
 
+std::vector<Bitmap> Bitmap::CreateTiles() {
+  std::vector<Bitmap> tiles;
+  for (int i = 0; i < 16; ++i) {
+    for (int j = 0; j < 4; ++j) {
+      tiles.emplace_back(8, 8, 8, 32);
+      auto surface = tiles[i + j].GetSurface();
+      SDL_Rect src_rect;
+      src_rect.x = i;
+      src_rect.y = j;
+      src_rect.w = 8;
+      src_rect.h = 8;
+      SDL_BlitSurface(surface_, &src_rect, surface, NULL);
+    }
+  }
+  return tiles;
+}
+
 }  // namespace gfx
 }  // namespace app
 }  // namespace yaze
diff --git a/src/app/gfx/bitmap.h b/src/app/gfx/bitmap.h
index 1a1c7433..59959512 100644
--- a/src/app/gfx/bitmap.h
+++ b/src/app/gfx/bitmap.h
@@ -16,6 +16,7 @@ class Bitmap {
  public:
   Bitmap() = default;
   Bitmap(int width, int height, int depth, uchar *data);
+  Bitmap(int width, int height, int depth, int data_size);
 
   void Create(int width, int height, int depth, uchar *data);
   void Create(int width, int height, int depth, int data_size);
@@ -25,10 +26,13 @@ class Bitmap {
 
   void ApplyPalette(const SNESPalette &palette);
 
+  std::vector<Bitmap> CreateTiles();
+
   int GetWidth() const { return width_; }
   int GetHeight() const { return height_; }
-  uchar *GetData() const { return pixel_data_; }
-  SDL_Texture *GetTexture() const { return texture_; }
+  auto GetData() const { return pixel_data_; }
+  auto GetTexture() const { return texture_; }
+  auto GetSurface() const { return surface_; }
 
  private:
   int width_ = 0;