make a SameLineOrWrap helper and fix wrapping bug introduced by switching to the docking branch of imgui

src/main.cpp

@@ -1337,8 +1337,6 @@ void change_map_tile(V2 pos, TileKind kind) {
     if (pos_x < 0 || pos_y < 0 || pos_x > current_map.width - 1 || pos_y > current_map.height - 1)
         return;
 
-    SDL_Log("TileKind Change: %d %d", pos_x, pos_y);
-
     __m128i corner_infos = _mm_setr_epi32(get_corner_info(pos_x, pos_y + 1), get_corner_info(pos_x + 1, pos_y + 1), get_corner_info(pos_x + 1, pos_y), get_corner_info(pos_x, pos_y));
     __m128i none_mask    = _mm_cmpeq_epi8(corner_infos, _mm_set1_epi8(TILEKIND_NONE));
     __m128i error_mask   = _mm_cmpeq_epi8(corner_infos, _mm_set1_epi8(TILEKIND_ERROR));
@@ -1358,6 +1356,13 @@ void change_map_tile(V2 pos, TileKind kind) {
     update_buffer(current_map.gpu_buffer, 0, current_map.width * current_map.height * sizeof(Uint32), current_map.tiles);
 }
 
+static void SameLineOrWrap(const ImVec2& size) {
+    ImGuiWindow *window = ImGui::GetCurrentWindow();
+    ImVec2 pos = ImVec2(window->DC.CursorPosPrevLine.x + ImGui::GetStyle().ItemSpacing.x, window->DC.CursorPosPrevLine.y);
+    if (window->WorkRect.Contains(ImRect(pos, pos + size)))
+        ImGui::SameLine();
+}
+
 int main(int argc, char **argv) {
     setup_memory_functions();
 
@@ -1674,9 +1679,8 @@ int main(int argc, char **argv) {
                     ImVec2 uv0 = ImVec2(0, 0);
                     ImVec2 uv1 = ImVec2(1, 1);
 
-                    float available = ImGui::GetContentRegionAvail().x - ImGui::GetItemRectMax().x;
+                    if (i != 0)
-                    if (available >= 32)
+                        SameLineOrWrap(ImVec2(32, 32));
-                        ImGui::SameLine();
 
                     if (SelectableTile("##tile", selected_tile == i, &tile_atlas_texture_binding, i, ImVec2(32, 32), uv0, uv1, SDL_max(selected_rotation, 0))) {
                         selected_tile_kind = -1;
@@ -1695,21 +1699,16 @@ int main(int argc, char **argv) {
                     if (SelectableTile("##None", selected_rotation == 0, &tile_atlas_texture_binding, selected_tile, ImVec2(32, 32), uv0, uv1, 0))
                         selected_rotation = 0;
                     
-                    if (ImGui::GetContentRegionAvail().x - ImGui::GetItemRectMax().x >= 32)
+                    
-                        ImGui::SameLine();
+                    SameLineOrWrap(ImVec2(32, 32));
-
                     if (SelectableTile("##90",   selected_rotation == 1, &tile_atlas_texture_binding, selected_tile, ImVec2(32, 32), uv0, uv1, 1))
                         selected_rotation = 1;
 
-                    if (ImGui::GetContentRegionAvail().x - ImGui::GetItemRectMax().x >= 32)
+                    SameLineOrWrap(ImVec2(32, 32));
-                        ImGui::SameLine();
-
                     if (SelectableTile("##180",  selected_rotation == 2, &tile_atlas_texture_binding, selected_tile, ImVec2(32, 32), uv0, uv1, 2))
                         selected_rotation = 2;
 
-                    if (ImGui::GetContentRegionAvail().x - ImGui::GetItemRectMax().x >= 32)
+                    SameLineOrWrap(ImVec2(32, 32));
-                        ImGui::SameLine();
-
                     if (SelectableTile("##270",  selected_rotation == 3, &tile_atlas_texture_binding, selected_tile, ImVec2(32, 32), uv0, uv1, 3))
                         selected_rotation = 3;
 
@@ -1902,7 +1901,6 @@ int main(int argc, char **argv) {
                     case SDL_EVENT_MOUSE_MOTION: {
                         mouse_pos = V2_(event.motion.x, event.motion.y);
                         V2 floor_intersection = get_floor_intersection_of_mouse(mouse_pos);
-                        SDL_Log("Move: %g %g", floor_intersection.x, floor_intersection.y);
 
                         if (selected_tile_kind != -1 && dragging_tile_change) {
                             V2 floor_intersection = get_floor_intersection_of_mouse(mouse_pos);