From ebddc0dfe2288de67ceb64b716e56233a0d15743 Mon Sep 17 00:00:00 2001
From: Sven Balzer <4653051+Kyuusokuna@users.noreply.github.com>
Date: Fri, 28 Feb 2025 16:16:21 +0100
Subject: [PATCH] add random rotation option

---
 src/main.cpp | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 477aae7..f43ac2e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -844,7 +844,7 @@ int main(int argc, char **argv) {
                 if (available >= 32)
                     ImGui::SameLine();
 
-                if (SelectableImage("##tile", selected_tile == i, &texture_binding, ImVec2(32, 32), uv0, uv1, selected_rotation))
+                if (SelectableImage("##tile", selected_tile == i, &texture_binding, ImVec2(32, 32), uv0, uv1, SDL_max(selected_rotation, 0)))
                     selected_tile = i;
 
                 ImGui::PopID();
@@ -876,6 +876,9 @@ int main(int argc, char **argv) {
 
                 if (SelectableImage("##270",  selected_rotation == 3, &texture_binding, ImVec2(32, 32), uv0, uv1, 3))
                     selected_rotation = 3;
+
+                if (ImGui::Selectable("Random", selected_rotation == -1))
+                    selected_rotation = -1;
             }
         }
         ImGui::End();
@@ -980,8 +983,14 @@ int main(int argc, char **argv) {
 
                     if (selected_tile != -1) {
                         if(0 <= tile_x && tile_x < map_width && 
-                        0 <= tile_y && tile_y < map_height)
-                            map_tiles[tile_x + map_width * tile_y] = (selected_rotation << 16) | selected_tile;
+                        0 <= tile_y && tile_y < map_height) {
+                            if (selected_rotation == -1) {
+                                Sint32 rotation = SDL_rand(4);
+                                map_tiles[tile_x + map_width * tile_y] = ((rotation & 3) << 16) | selected_tile;
+                            } else {
+                                map_tiles[tile_x + map_width * tile_y] = ((selected_rotation & 3) << 16) | selected_tile;
+                            }
+                        }
                     }
 
                     SDL_Keymod modifiers = SDL_GetModState();