From 9a4dc7311d39b3beac519348e36141ebdadf6fa5 Mon Sep 17 00:00:00 2001
From: Aman Menda <aman.menda@epitech.eu>
Date: Tue, 14 May 2024 17:41:32 +0100
Subject: [PATCH] feat: render chess board without pieces

---
 include/UI/HomePage.hpp |  7 +++++++
 src/UI/HomePage.cpp     | 43 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/include/UI/HomePage.hpp b/include/UI/HomePage.hpp
index 6d6f2a5..bf72e4e 100644
--- a/include/UI/HomePage.hpp
+++ b/include/UI/HomePage.hpp
@@ -8,6 +8,10 @@
 #include "Page.hpp"
 #include "../Imgui.hpp"
 
+#define CHESSBOARD_SIZE 8
+#define TILE_SIZE 70.0f
+#define LABEL_SIZE 20.0f
+
 namespace Stuckfish
 {
 	class Core;
@@ -40,6 +44,9 @@ namespace Stuckfish
 		void RenderUsernameInputBox(bool isDisabled);
 		void RenderGameReview(void);
 
+		static inline ImU32 whiteTileColor = IM_COL32(240, 217, 181, 255);
+		static inline ImU32 blackTileColor = IM_COL32(181, 136, 99, 255);
+		static inline ImU32 coordinatetextColor = IM_COL32(0, 0, 0, 255);
 	private:
 		Core& _app;
 		HomePageEvent _event;
diff --git a/src/UI/HomePage.cpp b/src/UI/HomePage.cpp
index 54c2170..b1e9cdd 100644
--- a/src/UI/HomePage.cpp
+++ b/src/UI/HomePage.cpp
@@ -60,6 +60,7 @@ void HomePage::Render(void)
 		| ImGuiWindowFlags_NoSavedSettings);
 
 	RenderUsernameInputBox(isDisabled);
+	RenderChessBoard();
 
 	if (_event == HomePageEvent::ON_GAME_SELECTION)
 		RenderPopup();
@@ -187,4 +188,46 @@ void HomePage::RenderUsernameInputBox(bool isDisabled)
 	ImGui::PopStyleVar();
 }
 
+void HomePage::RenderChessBoard(void)
+{
+	// Get the ImGui window draw list
+	ImDrawList* drawList = ImGui::GetWindowDrawList();
+
+	// Get the top-left corner of the window where the board should start
+	ImVec2 boardPos = ImGui::GetCursorScreenPos();
+
+	for (int row = 0; row < CHESSBOARD_SIZE; ++row)
+	{
+		for (int col = 0; col < CHESSBOARD_SIZE; ++col)
+		{
+			// Calculate the position of the current tile and draw the tile
+			ImU32 tileColor = ((row + col) % 2 == 0) ? whiteTileColor : blackTileColor;
+			ImVec2 tilePos = ImVec2(boardPos.x + col * TILE_SIZE, boardPos.y + row * TILE_SIZE);
+			ImVec2 tileEndPos = ImVec2(tilePos.x + TILE_SIZE, tilePos.y + TILE_SIZE);
+			drawList->AddRectFilled(tilePos, tileEndPos, tileColor);
+
+			std::string coordText;
+			/*if (row == 0) {
+				// Bottom row (a to h)
+				coordText = std::string(1, 'h' - col);
+			}*/
+			// Case where user has played as white.
+			if (row == 7) {
+				// Top row (h to a)
+				// Draw the letters coordinates text
+				coordText = std::string(1, 'a' + col);
+				ImVec2 letterPos = ImVec2(tilePos.x + TILE_SIZE - ImGui::CalcTextSize(coordText.c_str()).x - 2, tilePos.y + TILE_SIZE - ImGui::CalcTextSize(coordText.c_str()).y - 2);
+				drawList->AddText(letterPos, coordinatetextColor, coordText.c_str());
+			}
+			if (col == 0)
+			{
+				// Draw the coordinates text
+				coordText = std::to_string(8 - row);
+				ImVec2 textPos = ImVec2(tilePos.x + 2, tilePos.y + 2);
+				drawList->AddText(textPos, coordinatetextColor, coordText.c_str());
+			}
+		}
+	}
+}
+
 }
\ No newline at end of file