108 lines
3.0 KiB
C++
108 lines
3.0 KiB
C++
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#include <SDL.h>
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#include "SpriteStrip.h"
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#include "Animation.h"
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#include "Actor.h"
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#include <iostream>
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// TODO: Animation has mysterious segfault problems when it is used static; e.g.
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//
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// Animation anim; <-- using this object will eventually cause a segfault thru the framecounters/indexers
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// ..
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// Animation *anim = new Animation() <-- ... using this one will not
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Animation::Animation()
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{
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this->strip = NULL;
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this->timeStep = 0;
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this->fps = 0;
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this->anchor.x = 0;
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this->anchor.y = 0;
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}
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Animation::~Animation()
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{
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}
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int Animation::setStrip(SpriteStrip *strip, int fps, int loop, Vector anchor)
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{
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if ( strip == NULL ) {
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std::cerr << "Got NULL sprite strip\n";
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return 1;
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}
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this->loop = loop;
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this->strip = strip;
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//std::cerr << "this->strip is now " << strip << "\n";
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this->fps = fps;
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if ( this-> fps > 0 )
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this->timeStep = 1000 / fps;
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if ( anchor.x <= this->strip->width() )
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this->anchor.x = anchor.x;
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if ( anchor.y <= this->strip->height() )
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this->anchor.y = anchor.y;
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return 0;
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}
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// FIXME : The way this interaction works is INCREDIBLY hackish. I should look
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// at collapsing the nextFrame() functionality into Actor, and basically redoing the
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// Animation class as a structure that does nothing. For now, though, this works.
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SDL_Surface *Animation::nextFrame(int curFrame, int lastTime, AnimatedRenderable *actorSource)
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{
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FrameCounter fc;
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if ( actorSource ) {
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fc = actorSource->getFrameCounter();
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curFrame = fc.curFrame;
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lastTime = fc.lastTime;
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}
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SDL_Surface *toRet = NULL;
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//std::cerr << "Checking for step; timeStep " << this->timeStep << " lastTime " << lastTime << "\n";
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if ( this->fps > 0 && ((SDL_GetTicks() - lastTime) >= this->timeStep) ) {
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if ( curFrame +1 >= this->strip->numFrames() && this->loop == 0 ) {
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toRet = this->strip->getFrame(0);
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//std::cerr << "Time for a step; Returning frame 0\n";
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} else if ( curFrame + 1 >= this->strip->numFrames() && this->loop == 1) {
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return NULL;
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}
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//std::cerr << "Time for a step; returning frame " << curFrame + 1 << "\n";
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toRet = this->strip->getFrame(curFrame+1);
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curFrame += 1;
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if ( actorSource ) {
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fc.curFrame += 1;
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if ( fc.curFrame >= this->strip->numFrames() && this->loop == 0 ) {
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//std::cerr << "Resetting to zero\n";
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fc.curFrame = 0;
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curFrame = 0;
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}
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fc.lastTime = SDL_GetTicks();
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fc.lastFrame = toRet;
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actorSource->setFrameCounter(fc);
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}
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} else if ( this->fps == 0 ) {
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//std::cerr << "0 FPS ; Returning frame 0\n";
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toRet = this->strip->getFrame(0);
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} else {
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//std::cerr << "Not time for a step; Returning frame " << curFrame << "\n";
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toRet = this->strip->getFrame(curFrame);
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}
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if ( toRet == NULL )
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return this->strip->getFrame(0);
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else
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return toRet;
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}
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int Animation::numFrames()
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{
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if ( this->strip != NULL ) {
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return this->strip->numFrames();
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}
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return 0;
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}
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Vector Animation::anchorAt(Vector position)
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{
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Vector newVector;
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newVector.x = position.x - this->anchor.x;
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newVector.y = position.y - this->anchor.y;
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return newVector;
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}
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