Fix MSVC SDL1 warnings

Source/engine/assets.hpp

@@ -192,7 +192,11 @@ struct AssetHandle {
 
 	bool read(void *buffer, size_t len)
 	{
+#if SDL_VERSION_ATLEAST(2, 0, 0)
 		return handle->read(handle, buffer, len, 1) == 1;
+#else
+		return handle->read(handle, buffer, static_cast<int>(len), 1) == 1;
+#endif
 	}
 
 	bool seek(long pos)

Source/interfac.cpp

@@ -46,7 +46,7 @@ const int BarPos[3][2] = { { 53, 37 }, { 53, 421 }, { 53, 37 } };
 
 OptionalOwnedClxSpriteList ArtCutsceneWidescreen;
 
-uint16_t CustomEventsBegin = SDL_USEREVENT;
+SdlEventType CustomEventsBegin = SDL_USEREVENT;
 constexpr uint16_t NumCustomEvents = WM_LAST - WM_FIRST + 1;
 
 Cutscenes GetCutSceneFromLevelType(dungeon_type type)
@@ -234,17 +234,17 @@ void RegisterCustomEvents()
 #endif
 }
 
-bool IsCustomEvent(uint16_t eventType)
+bool IsCustomEvent(SdlEventType eventType)
 {
 	return eventType >= CustomEventsBegin && eventType < CustomEventsBegin + NumCustomEvents;
 }
 
-interface_mode GetCustomEvent(uint16_t eventType)
+interface_mode GetCustomEvent(SdlEventType eventType)
 {
 	return static_cast<interface_mode>(eventType - CustomEventsBegin);
 }
 
-uint16_t CustomEventToSdlEvent(interface_mode eventType)
+SdlEventType CustomEventToSdlEvent(interface_mode eventType)
 {
 	return CustomEventsBegin + eventType;
 }

Source/interfac.h

@@ -32,11 +32,17 @@ enum interface_mode : uint8_t {
 
 void RegisterCustomEvents();
 
-bool IsCustomEvent(uint16_t eventType);
+#if SDL_VERSION_ATLEAST(2, 0, 0)
+using SdlEventType = uint16_t;
+#else
+using SdlEventType = uint8_t;
+#endif
 
-interface_mode GetCustomEvent(uint16_t eventType);
+bool IsCustomEvent(SdlEventType eventType);
 
-uint16_t CustomEventToSdlEvent(interface_mode eventType);
+interface_mode GetCustomEvent(SdlEventType eventType);
+
+SdlEventType CustomEventToSdlEvent(interface_mode eventType);
 
 enum Cutscenes : uint8_t {
 	CutStart,

Source/pfile.cpp

@@ -286,7 +286,11 @@ void CreateDetailDiffs(std::string_view prefix, std::string_view memoryMapFile,
 
 	size_t readBytes = static_cast<size_t>(SDL_RWsize(handle));
 	std::unique_ptr<std::byte[]> memoryMapFileData { new std::byte[readBytes] };
+#if SDL_VERSION_ATLEAST(2, 0, 0)
 	SDL_RWread(handle, memoryMapFileData.get(), readBytes, 1);
+#else
+	SDL_RWread(handle, memoryMapFileData.get(), static_cast<int>(readBytes), 1);
+#endif
 	SDL_RWclose(handle);
 
 	const std::string_view buffer(reinterpret_cast<const char *>(memoryMapFileData.get()), readBytes);