WINTERMUTE: Add FoxTail saveload indicator hack

Wintermute games usually display save/load progress bar as a rectangle drawn above an image.
FoxTail's progress bar is drawn below semitransparent image instead.

TODO: I have no idea how to make this work with "dirty_rect=true" mode.

4 files changed, 39 insertions, 4 deletions

diff --git a/engines/wintermute/base/gfx/base_renderer.cpp b/engines/wintermute/base/gfx/base_renderer.cpp
index 0f33fc2c43..b60a4d4b38 100644
--- a/engines/wintermute/base/gfx/base_renderer.cpp
+++ b/engines/wintermute/base/gfx/base_renderer.cpp
@@ -32,6 +32,7 @@
 #include "engines/wintermute/base/gfx/base_image.h"
 #include "engines/wintermute/base/base_sub_frame.h"
 #include "engines/wintermute/base/base_region.h"
+#include "engines/wintermute/base/base_engine.h"
 #include "engines/wintermute/platform_osystem.h"
 #include "engines/wintermute/base/base_persistence_manager.h"
 
@@ -372,6 +373,26 @@ bool BaseRenderer::displayIndicator() {
 	if (!_indicatorDisplay || !_indicatorProgress) {
 		return STATUS_OK;
 	}
+
+#ifdef ENABLE_FOXTAIL
+	if (BaseEngine::instance().isFoxTail()) {
+		_hasDrawnSaveLoadImage = false;
+		fill(0, 0, 0);
+		displaySaveloadLines();
+		displaySaveloadImage();
+		forcedFlip();
+		return STATUS_OK;
+	}
+#endif
+	
+	displaySaveloadImage();
+	displaySaveloadLines();
+	indicatorFlip();
+	return STATUS_OK;
+}
+
+//////////////////////////////////////////////////////////////////////////
+bool BaseRenderer::displaySaveloadImage() {
 	if (_saveLoadImage && !_hasDrawnSaveLoadImage) {
 		Rect32 rc;
 		rc.setRect(0, 0, _saveLoadImage->getWidth(), _saveLoadImage->getHeight());
@@ -384,6 +405,11 @@ bool BaseRenderer::displayIndicator() {
 		_hasDrawnSaveLoadImage = true;
 	}
 
+	return STATUS_OK;
+}
+
+//////////////////////////////////////////////////////////////////////////
+bool BaseRenderer::displaySaveloadLines() {
 	if ((!_indicatorDisplay && _indicatorWidth <= 0) || _indicatorHeight <= 0) {
 		return STATUS_OK;
 	}
@@ -395,9 +421,6 @@ bool BaseRenderer::displayIndicator() {
 
 	setup2D();
 	_indicatorWidthDrawn = curWidth;
-	if (_indicatorWidthDrawn) {
-		indicatorFlip();
-	}
 	return STATUS_OK;
 }
 
diff --git a/engines/wintermute/base/gfx/base_renderer.h b/engines/wintermute/base/gfx/base_renderer.h
index 6b1a4f97f4..981171b78b 100644
--- a/engines/wintermute/base/gfx/base_renderer.h
+++ b/engines/wintermute/base/gfx/base_renderer.h
@@ -116,6 +116,7 @@ public:
 	 * essentially, just copies the region defined by the _indicator-variables.
 	 */
 	virtual bool indicatorFlip() = 0;
+	virtual bool forcedFlip() = 0;
 	virtual void initLoop();
 	virtual bool setup2D(bool force = false);
 	virtual bool setupLines();
@@ -223,6 +224,8 @@ protected:
 	Rect32 _monitorRect;
 private:
 	Common::Array<BaseActiveRect *> _rectList;
+	bool displaySaveloadImage();
+	bool displaySaveloadLines();
 };
 
 BaseRenderer *makeOSystemRenderer(BaseGame *inGame); // Implemented in BRenderSDL.cpp
diff --git a/engines/wintermute/base/gfx/osystem/base_render_osystem.cpp b/engines/wintermute/base/gfx/osystem/base_render_osystem.cpp
index 7692bc6c48..cfa43adb17 100644
--- a/engines/wintermute/base/gfx/osystem/base_render_osystem.cpp
+++ b/engines/wintermute/base/gfx/osystem/base_render_osystem.cpp
@@ -146,7 +146,15 @@ bool BaseRenderOSystem::initRenderer(int width, int height, bool windowed) {
 }
 
 bool BaseRenderOSystem::indicatorFlip() {
-	g_system->copyRectToScreen((byte *)_renderSurface->getBasePtr(_indicatorX, _indicatorY), _renderSurface->pitch, _indicatorX, _indicatorY, _indicatorWidthDrawn, _indicatorHeight);
+	if (_indicatorWidthDrawn > 0 && _indicatorHeight > 0) {
+		g_system->copyRectToScreen((byte *)_renderSurface->getBasePtr(_indicatorX, _indicatorY), _renderSurface->pitch, _indicatorX, _indicatorY, _indicatorWidthDrawn, _indicatorHeight);
+		g_system->updateScreen();
+	}
+	return STATUS_OK;
+}
+
+bool BaseRenderOSystem::forcedFlip() {
+	g_system->copyRectToScreen((byte *)_renderSurface->getPixels(), _renderSurface->pitch, 0, 0, _renderSurface->w, _renderSurface->h);
 	g_system->updateScreen();
 	return STATUS_OK;
 }
diff --git a/engines/wintermute/base/gfx/osystem/base_render_osystem.h b/engines/wintermute/base/gfx/osystem/base_render_osystem.h
index 47099046e9..11987e55e5 100644
--- a/engines/wintermute/base/gfx/osystem/base_render_osystem.h
+++ b/engines/wintermute/base/gfx/osystem/base_render_osystem.h
@@ -69,6 +69,7 @@ public:
 	bool initRenderer(int width, int height, bool windowed) override;
 	bool flip() override;
 	virtual bool indicatorFlip();
+	virtual bool forcedFlip();
 	bool fill(byte r, byte g, byte b, Common::Rect *rect = nullptr) override;
 	Graphics::PixelFormat getPixelFormat() const override;
 	void fade(uint16 alpha) override;