1 files changed, 73 insertions, 0 deletions
diff --git a/src/gui/guiAnimatedImage.cpp b/src/gui/guiAnimatedImage.cpp
new file mode 100644
index 000000000..b1447c45f
--- /dev/null
+++ b/src/gui/guiAnimatedImage.cpp
@@ -0,0 +1,73 @@
+#include "guiAnimatedImage.h"
+
+#include "client/guiscalingfilter.h"
+#include "client/tile.h" // ITextureSource
+#include "log.h"
+#include "porting.h"
+#include "util/string.h"
+#include <string>
+#include <vector>
+
+GUIAnimatedImage::GUIAnimatedImage(gui::IGUIEnvironment *env, gui::IGUIElement *parent,
+	s32 id, const core::rect<s32> &rectangle, const std::string &texture_name,
+	s32 frame_count, s32 frame_duration, ISimpleTextureSource *tsrc) :
+	gui::IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rectangle), m_tsrc(tsrc)
+{
+	m_texture = m_tsrc->getTexture(texture_name);
+
+	m_frame_count    = std::max(frame_count,    1);
+	m_frame_duration = std::max(frame_duration, 0);
+
+	if (m_texture != nullptr) {
+		core::dimension2d<u32> size = m_texture->getOriginalSize();
+		if (size.Height < (u64)m_frame_count)
+			m_frame_count = size.Height;
+	} else {
+		// No need to step an animation if we have nothing to draw
+		m_frame_count = 1;
+	}
+}
+
+void GUIAnimatedImage::draw()
+{
+	// Render the current frame
+	if (m_texture != nullptr) {
+		video::IVideoDriver *driver = Environment->getVideoDriver();
+
+		const video::SColor color(255, 255, 255, 255);
+		const video::SColor colors[] = {color, color, color, color};
+
+		core::dimension2d<u32> size = m_texture->getOriginalSize();
+		size.Height /= m_frame_count;
+
+		draw2DImageFilterScaled(driver, m_texture, AbsoluteRect,
+			core::rect<s32>(core::position2d<s32>(0, size.Height * m_frame_idx), size),
+			NoClip ? nullptr : &AbsoluteClippingRect, colors, true);
+	}
+
+	// Step the animation
+	if (m_frame_count > 1 && m_frame_duration > 0) {
+		// Determine the delta time to step
+		u64 new_global_time = porting::getTimeMs();
+		if (m_global_time > 0)
+			m_frame_time += new_global_time - m_global_time;
+
+		m_global_time = new_global_time;
+
+		// Advance by the number of elapsed frames, looping if necessary
+		m_frame_idx += u32(m_frame_time / m_frame_duration);
+		m_frame_idx %= m_frame_count;
+
+		// If 1 or more frames have elapsed, reset the frame time counter with
+		// the remainder
+		m_frame_time %= m_frame_duration;
+	}
+}
+
+
+void GUIAnimatedImage::setFrameIndex(s32 frame)
+{
+	s32 idx = std::max(frame, 0);
+	if (idx > 0 && idx < m_frame_count)
+		m_frame_idx = idx;
+}