From 577a84a24cf6676c7c170e143b4d4933751b09ac Mon Sep 17 00:00:00 2001
From: Peter Kohaut
Date: Thu, 4 Jul 2019 00:07:28 +0200
Subject: BLADERUNNER: Explicit message about missing game files

---
 engines/bladerunner/bladerunner.cpp | 61 +++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

(limited to 'engines/bladerunner/bladerunner.cpp')

diff --git a/engines/bladerunner/bladerunner.cpp b/engines/bladerunner/bladerunner.cpp
index 7362291c74..ecb4048233 100644
--- a/engines/bladerunner/bladerunner.cpp
+++ b/engines/bladerunner/bladerunner.cpp
@@ -310,6 +310,20 @@ void BladeRunnerEngine::pauseEngineIntern(bool pause) {
 }
 
 Common::Error BladeRunnerEngine::run() {
+
+	Common::Array<Common::String> missingFiles;
+	if (!checkFiles(missingFiles)) {
+		Common::String missingFileStr = "";
+		for (uint i = 0; i < missingFiles.size(); ++i) {
+			if (i > 0) {
+				missingFileStr += ", ";
+			}
+			missingFileStr += missingFiles[i];
+		}
+
+		return Common::Error(Common::kNoGameDataFoundError, missingFileStr);
+	}
+
 	Graphics::PixelFormat format = screenPixelFormat();
 	initGraphics(640, 480, &format);
 
@@ -386,6 +400,53 @@ Common::Error BladeRunnerEngine::run() {
 	return Common::kNoError;
 }
 
+bool BladeRunnerEngine::checkFiles(Common::Array<Common::String> &missingFiles) {
+	missingFiles.clear();
+
+	Common::Array<Common::String> requiredFiles;
+	requiredFiles.push_back("1.TLK");
+	requiredFiles.push_back("2.TLK");
+	requiredFiles.push_back("3.TLK");
+	requiredFiles.push_back("A.TLK");
+	requiredFiles.push_back("COREANIM.DAT");
+	requiredFiles.push_back("MODE.MIX");
+	requiredFiles.push_back("MUSIC.MIX");
+	requiredFiles.push_back("OUTTAKE1.MIX");
+	requiredFiles.push_back("OUTTAKE2.MIX");
+	requiredFiles.push_back("OUTTAKE3.MIX");
+	requiredFiles.push_back("OUTTAKE4.MIX");
+	requiredFiles.push_back("SFX.MIX");
+	requiredFiles.push_back("SPCHSFX.TLK");
+	requiredFiles.push_back("STARTUP.MIX");
+	requiredFiles.push_back("VQA1.MIX");
+	requiredFiles.push_back("VQA2.MIX");
+	requiredFiles.push_back("VQA3.MIX");
+
+	for (uint i = 0; i < requiredFiles.size(); ++i) {
+		if (!Common::File::exists(requiredFiles[i])) {
+			missingFiles.push_back(requiredFiles[i]);
+		}
+	}
+
+	bool hasHdFrames = Common::File::exists("HDFRAMES.DAT");
+
+	if (!hasHdFrames) {
+		requiredFiles.clear();
+		requiredFiles.push_back("CDFRAMES1.DAT");
+		requiredFiles.push_back("CDFRAMES2.DAT");
+		requiredFiles.push_back("CDFRAMES3.DAT");
+		requiredFiles.push_back("CDFRAMES4.DAT");
+
+		for (uint i = 0; i < requiredFiles.size(); ++i) {
+			if (!Common::File::exists(requiredFiles[i])) {
+				missingFiles.push_back(requiredFiles[i]);
+			}
+		}
+	}
+
+	return missingFiles.empty();
+}
+
 bool BladeRunnerEngine::startup(bool hasSavegames) {
 	// These are static objects in original game
 
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