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Minimal initial steamworks integration.
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| // Copyright 2017 Wouter van Oortmerssen. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| #include "stdafx.h" | ||
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| #include "vmdata.h" | ||
| #include "natreg.h" | ||
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| #include "glinterface.h" | ||
| #include "sdlinterface.h" | ||
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| #ifdef PLATFORM_STEAMWORKS | ||
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| #include "steam/steam_api.h" | ||
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| struct SteamState { | ||
| bool steamoverlayactive = false; | ||
| STEAM_CALLBACK(SteamState, OnGameOverlayActivated, GameOverlayActivated_t); | ||
| STEAM_CALLBACK(SteamState, OnScreenshotRequested, ScreenshotRequested_t); | ||
| }; | ||
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| void SteamState::OnGameOverlayActivated(GameOverlayActivated_t *callback) { | ||
| steamoverlayactive = callback->m_bActive; | ||
| Output(OUTPUT_INFO, "steam overlay toggle: %d", steamoverlayactive); | ||
| } | ||
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| void SteamState::OnScreenshotRequested(ScreenshotRequested_t *) { | ||
| Output(OUTPUT_INFO, "steam screenshot requested"); | ||
| auto size = GetScreenSize(); | ||
| auto pixels = ReadPixels(int2(0), size); | ||
| SteamScreenshots()->WriteScreenshot(pixels, size.x() * size.y() * 3, size.x(), size.y()); | ||
| delete[] pixels; | ||
| } | ||
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| extern "C" void __cdecl SteamAPIDebugTextHook(int severity, const char *debugtext) { | ||
| Output(severity ? OUTPUT_WARN : OUTPUT_INFO, "%s", debugtext); | ||
| } | ||
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| SteamState *steam = nullptr; | ||
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| #endif // PLATFORM_STEAMWORKS | ||
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| void SteamShutDown() { | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| if (steam) { | ||
| delete steam; | ||
| SteamAPI_Shutdown(); | ||
| } | ||
| steam = nullptr; | ||
| #endif // PLATFORM_STEAMWORKS | ||
| } | ||
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| int SteamInit(uint appid, bool screenshots) { | ||
| SteamShutDown(); | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| #ifdef _DEBUG | ||
| (void)appid; | ||
| #else | ||
| if (appid && SteamAPI_RestartAppIfNecessary(appid)) { | ||
| Output(OUTPUT_INFO, "Not started from Steam"); | ||
| return -1; | ||
| } | ||
| #endif | ||
| bool steaminit = SteamAPI_Init(); | ||
| Output(OUTPUT_INFO, "Steam init: %d", steaminit); | ||
| if (!steaminit) return 0; | ||
| SteamUtils()->SetWarningMessageHook(&SteamAPIDebugTextHook); | ||
| steam = new SteamState(); | ||
| SteamUserStats()->RequestCurrentStats(); | ||
| if (screenshots) SteamScreenshots()->HookScreenshots(true); | ||
| return 1; | ||
| #else | ||
| return 0; | ||
| #endif // PLATFORM_STEAMWORKS | ||
| } | ||
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| void SteamUpdate() { | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| SteamAPI_RunCallbacks(); | ||
| #endif // PLATFORM_STEAMWORKS | ||
| } | ||
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| const char *UserName() { | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| if (steam) return SteamFriends()->GetPersonaName(); | ||
| #endif // PLATFORM_STEAMWORKS | ||
| return ""; | ||
| } | ||
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| bool UnlockAchievement(const char *name) { | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| if (steam) { | ||
| auto ok = SteamUserStats()->SetAchievement(name); | ||
| return SteamUserStats()->StoreStats() && ok; // Force this to run. | ||
| } | ||
| #else | ||
| (void)name; | ||
| #endif // PLATFORM_STEAMWORKS | ||
| return false; | ||
| } | ||
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| int SteamReadFile(const char *fn, string &buf) { | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| if (steam) { | ||
| auto len = SteamRemoteStorage()->GetFileSize(fn); | ||
| if (len) { | ||
| buf.resize(len); | ||
| return SteamRemoteStorage()->FileRead(fn, (void *)buf.data(), len); | ||
| } | ||
| } | ||
| #endif // PLATFORM_STEAMWORKS | ||
| return 0; | ||
| } | ||
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| bool SteamWriteFile(const char *fn, const void *buf, int len) { | ||
| #ifdef PLATFORM_STEAMWORKS | ||
| if (steam) { | ||
| return SteamRemoteStorage()->FileWrite(fn, buf, len); | ||
| } | ||
| #endif // PLATFORM_STEAMWORKS | ||
| return false; | ||
| } | ||
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| using namespace lobster; | ||
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| void AddSteam() { | ||
| STARTDECL(steam_init) (Value &appid, Value &ss) { | ||
| return Value(SteamInit((uint)appid.ival(), ss.True())); | ||
| } | ||
| ENDDECL2(steam_init, "appid,allowscreenshots", "II", "I", | ||
| "initializes SteamWorks. returns 1 if succesful, 0 on failure. Specify a non-0 appid if you" | ||
| " want to restart from steam if this wasn't started from steam (the return value in this" | ||
| " case will be -1 to indicate you should terminate this instance). If you don't specify an" | ||
| " appid here or in steam_appid.txt, init will likely fail. The other functions can still be" | ||
| " called even if steam isn't active." | ||
| " allowscreenshots automatically uploads screenshots to steam (triggered by steam)."); | ||
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| STARTDECL(steam_overlay) () { | ||
| return Value(steam && steam->steamoverlayactive); | ||
| } | ||
| ENDDECL0(steam_overlay, "", "", "I", | ||
| "returns true if the steam overlay is currently on (you may want to auto-pause if so)"); | ||
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| STARTDECL(steam_username) () { | ||
| return Value(g_vm->NewString(UserName())); | ||
| } | ||
| ENDDECL0(steam_username, "", "", "S", | ||
| "returns the name of the steam user, or empty string if not available."); | ||
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| STARTDECL(steam_unlock_achievement) (Value &name) { | ||
| auto ok = UnlockAchievement(name.sval()->str()); | ||
| name.DECRT(); | ||
| return Value(ok); | ||
| } | ||
| ENDDECL1(steam_unlock_achievement, "achievementname", "S", "I", | ||
| "Unlocks an achievement and shows the achievement overlay if not already achieved before." | ||
| " Will also Q-up saving achievement to Steam." | ||
| " Returns true if succesful."); | ||
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| STARTDECL(steam_write_file) (Value &file, Value &contents) { | ||
| auto fn = file.sval()->str(); | ||
| auto s = contents.sval(); | ||
| auto ok = SteamWriteFile(fn, s->str(), s->len); | ||
| if (!ok) { | ||
| ok = WriteFile(fn, true, s->str(), s->len); | ||
| } | ||
| file.DECRT(); | ||
| contents.DECRT(); | ||
| return Value(ok); | ||
| } | ||
| ENDDECL2(steam_write_file, "file,contents", "SS", "I", | ||
| "writes a file with the contents of a string to the steam cloud, or local storage if that" | ||
| " fails, returns false if writing wasn't possible at all"); | ||
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| STARTDECL(steam_read_file) (Value &file) { | ||
| auto fn = file.sval()->str(); | ||
| string buf; | ||
| auto len = SteamReadFile(fn, buf); | ||
| if (!len) len = (int)LoadFile(fn, &buf); | ||
| file.DECRT(); | ||
| if (len < 0) return Value(); | ||
| auto s = g_vm->NewString(buf); | ||
| return Value(s); | ||
| } | ||
| ENDDECL1(steam_read_file, "file", "S", "S", | ||
| "returns the contents of a file as a string from the steam cloud if available, or otherwise" | ||
| " from local storage, or nil if the file can't be found at all."); | ||
| } | ||
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