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#include "animation_system.h"
#include <fstream>
#include <string>
#include <list>
#include "game.h"
#include "vector.h"
#include "util.h"
void AnimationSystem::initSprite(int spriteId, std::string_view filename) {
std::ifstream datafile(filename.data());
if (!datafile.is_open()) {
throw std::invalid_argument(std::string("Could not find sprite datafile: ") + std::string(filename));
}
Sprite& sprite = game_.getSprite(spriteId);
sprite.isAnimated = true;
char ch;
std::string line;
datafile >> sprite.spritesheet;
std::string framefilename;
datafile >> framefilename;
std::ifstream framefile(framefilename);
if (!framefile.is_open()) {
throw std::invalid_argument("Could not find frame datafile: " + framefilename);
}
vec2i cellSize;
framefile >> cellSize.w();
framefile >> ch; //,
framefile >> cellSize.h();
std::getline(framefile, line); // cell size
int framesPerRow;
framefile >> framesPerRow;
std::getline(framefile, line); // frames per row
int numFrames;
framefile >> numFrames;
std::getline(framefile, line); // frames
std::getline(framefile, line); // blank
sprite.frames.clear();
for (int i=0; i<numFrames; i++) {
SpriteFrame f;
framefile >> f.size.w();
framefile >> ch; //,
framefile >> f.size.h();
framefile >> ch; //,
framefile >> f.center.x();
framefile >> ch; //,
framefile >> f.center.y();
std::getline(framefile, line); // blank
f.srcRect.x = (i % framesPerRow) * cellSize.w();
f.srcRect.y = (i / framesPerRow) * cellSize.h();
f.srcRect.w = f.size.w();
f.srcRect.h = f.size.h();
sprite.frames.push_back(std::move(f));
}
std::string animLine;
std::getline(datafile, animLine); // blank
sprite.animations.clear();
sprite.nameDirToAnim.clear();
while (std::getline(datafile, animLine)) {
std::regex re(R"(([a-z!._]+)\[([a-z_]+)\](%[0-9]+)?: ([0-9,#]+))");
std::smatch m;
std::regex_match(animLine, m, re);
std::string animName = m[1];
Animation anim;
auto framestrs = splitStr<std::list<std::string>>(m[4], ",");
for (const std::string& f : framestrs) {
int times = 1;
size_t repeat_it = f.find("#");
if (repeat_it != std::string::npos) {
times = std::stoi(f.substr(repeat_it + 1));
}
for (int i=0; i<times; i++) {
anim.frameIndices.push_back(std::stoi(f));
}
}
if (animName.back() == '!') {
anim.looping = false;
}
if (m[3] != "") {
int frameRate = std::stoi(std::string(m[3]).substr(1));
switch (frameRate) {
case 5: anim.timerNum = 0; break;
case 60: anim.timerNum = 1; break;
default: throw std::invalid_argument("Invalid frame rate");
}
}
int animId = sprite.animations.size();
sprite.animations.push_back(std::move(anim));
Direction dir = directionFromString(std::string(m[2]));
sprite.nameDirToAnim[animName][dir] = animId;
}
updateAnimation(spriteId);
}
void AnimationSystem::tick(double dt) {
if (game_.isGameplayPaused()) return;
for (int timerNum = 0; timerNum < animTimers_.size(); timerNum++) {
Timer& animTimer = animTimers_[timerNum];
animTimer.accumulate(dt);
while (animTimer.step()) {
for (Sprite& sprite : game_.getSprites() | game_.spriteView()) {
if (sprite.isAnimated &&
sprite.animations[sprite.animationId].timerNum == timerNum &&
!sprite.animFinished &&
!sprite.animPaused) {
if (sprite.animSlowdown > 1) {
sprite.animSlowdownProgress++;
if (sprite.animSlowdownProgress == sprite.animSlowdown) {
sprite.animSlowdownProgress = 0;
} else {
continue;
}
}
sprite.animationFrame++;
if (sprite.animationFrame >= sprite.animations[sprite.animationId].frameIndices.size()) {
if (sprite.animations[sprite.animationId].looping) {
sprite.animationFrame = 0;
} else {
sprite.animFinished = true;
sprite.animationFrame = sprite.animations[sprite.animationId].frameIndices.size() - 1;
}
}
}
}
}
}
bobbingTimer_.accumulate(dt);
while (bobbingTimer_.step()) {
for (Sprite& sprite : game_.getSprites() | game_.spriteView()) {
if (sprite.isAnimated && sprite.bobbing) {
if (sprite.bobbingDown) {
sprite.bobAmount--;
if (sprite.bobAmount == 0) {
sprite.bobbingDown = false;
}
} else {
sprite.bobAmount++;
if (sprite.bobAmount == 4) {
sprite.bobbingDown = true;
}
}
}
}
}
fadingTimer_.accumulate(dt);
while (fadingTimer_.step()) {
for (Sprite& sprite : game_.getSprites() | game_.spriteView()) {
if (sprite.isAnimated) {
if (sprite.shouldBeFadedIn && sprite.opacity < 1.0) {
sprite.opacity += 0.05;
if (sprite.opacity > 1.0) {
sprite.opacity = 1.0;
}
} else if (!sprite.shouldBeFadedIn && sprite.opacity > 0.0) {
sprite.opacity -= 0.05;
if (sprite.opacity < 0.0) {
sprite.opacity = 0.0;
}
}
}
}
}
}
void AnimationSystem::setSpriteDirection(int spriteId, Direction dir) {
Sprite& sprite = game_.getSprite(spriteId);
if (sprite.dir != dir) {
sprite.dir = dir;
updateAnimation(spriteId);
}
}
void AnimationSystem::setSpriteAnimation(int spriteId, std::string_view name) {
Sprite& sprite = game_.getSprite(spriteId);
if (sprite.animationName != name) {
sprite.animationName = name;
updateAnimation(spriteId);
}
}
void AnimationSystem::updateAnimation(int spriteId) {
Sprite& sprite = game_.getSprite(spriteId);
sprite.animationId = sprite.nameDirToAnim[sprite.animationName][sprite.dir];
sprite.animationFrame = 0;
sprite.animFinished = false;
sprite.animPaused = false;
sprite.animSlowdownProgress = 0;
}
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