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#include "guiAnimatedImage.h"
#include "client/guiscalingfilter.h"
#include "client/tile.h" // ITextureSource
#include "log.h"
#include "porting.h"
#include <string>
GUIAnimatedImage::GUIAnimatedImage(gui::IGUIEnvironment *env, gui::IGUIElement *parent,
s32 id, const core::rect<s32> &rectangle, const std::string &name,
ISimpleTextureSource *tsrc) :
gui::IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rectangle),
m_name(name), m_tsrc(tsrc), m_texture(nullptr), m_global_time(0),
m_frame_idx(0), m_frame_count(1), m_frame_duration(1), m_frame_time(0)
{
// Expected format: "texture_name:frame_count,frame_duration"
// If this format is not met, the string will be loaded as a normal texture
std::string::size_type colon_position = name.find(':', 0);
std::string::size_type comma_position = name.find(',', 0);
if (comma_position != std::string::npos &&
colon_position != std::string::npos &&
comma_position < name.size()) {
m_texture = m_tsrc->getTexture(name.substr(0, colon_position));
m_frame_count = std::max(stoi(name.substr(
colon_position + 1, comma_position - colon_position - 1)), 1);
m_frame_duration = std::max(stoi(name.substr(comma_position + 1)), 1);
} else {
// Leave the count/duration and display a static image
m_texture = m_tsrc->getTexture(name);
errorstream << "animated_image[]: Invalid texture format " << name <<
". Expected format: texture_name:frame_count,frame_duration" << std::endl;
}
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) {
// 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;
}
}
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