Show error messages when loading maps, when exporting images/sounds and when embedding images, if images/sounds could not be loaded. Images and sounds not being loaded is supported so the editor can be used to fix maps by removing/replacing the images/sounds.
Saving maps is prevented if embedded images/sounds could not be loaded, as the data is required to save the map.
Always convert image data to RGBA and dilate if enabled also for external images, as images may be embedded later and should therefore always be in RGBA format.
Add separate UI element IDs for the quick action buttons in the prompt dialog, to ensure that the UI element IDs are different from the IDs used for the regular menu buttons. Otherwise, some buttons could not be activated with clicks because the menu button with the same ID was rendered first.
Closes#8998.
The `sx` and `sy` parameters are unnecessary, as they are always set to zero.
The checks in the `SelectSprite` functions are changed to assertions, as passing a wrong sprite ID is a programming error.
Fix snapshot builder creating too large snapshots, do not add snap item if extended item type could not be added, fix snapshot handling when converting 0.7 demo snapshot fails
Only prevent demo recording of the snapshot instead of ignoring most of the snapshot by returning early when converting the snapshot for demo recording fails.
The `CSnapshotBuilder::AddExtendedItemType` function can fail if the snapshot is already full. Previously, this was not handled, leading to `m_aExtendedItemTypes` being updated inconsistently with the real extended item types and the snap item being added without the extended item type. Now, the snap item is not added if its extended item type could not be added.
The snapshot builder was only considering the size of the data and of the new item being created in the `NewItem` function but not the size of the `CSnapshot` class and the size of the offsets (one `int` for each item including the new one). This could lead to snapshots being too large, which could cause the server to crash when the snapshots were copied into buffers of size `CSnapshot::MAX_SIZE`. However, it should be unlikely for this to happen normally, as the maximum number of snap items (`CSnapshot::MAX_ITEMS`, which is `1024`) is usually reached before the maximum snapshot size.
Also check in the `CSnapshot::IsValid` function that the snapshot is not too large (`CSnapshot::MAX_SIZE`) and check that the number of items is not too large (`CSnapshot::MAX_ITEMS`).
Actually moving to those new paths shouldn't be done until we get a
breaking change of this JSON, as it would otherwise unnecessarily break
old clients.
Once a new endpoint is created, the backward compatibility can be
removed.
ChillerDragon
Edgar
