112 lines
1.8 KiB
C++
112 lines
1.8 KiB
C++
#include "SDL_opengl.h"
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#include <AL/al.h>
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#include <cmath>
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#include "antigrav.h"
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m3dMesh Ring::mesh;
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const float Ring::MAXLIFE = 1.0;
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Ring *Ring::rings;
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int Ring::numRings;
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int Ring::init()
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{
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if(mesh.loadFromXML("ring.xml"))
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return 1;
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rings = new Ring[MAXRINGS];
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if(!rings)
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return 1;
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return 0;
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}
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Ring::Ring()
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: life(0)
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{
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}
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Ring::Ring(float x, float y, float ang, const Vector2& vel, const float col[3])
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{
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posx = x;
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posy = y;
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velx = vel.getX();
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vely = vel.getY();
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life = MAXLIFE;
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angle = DEG(ang);
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color[0] = col[0];
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color[1] = col[1];
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color[2] = col[2];
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color[3] = 1;
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}
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void Ring::update(float t)
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{
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if(isAlive()) {
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posx += velx * t;
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posy += vely * t;
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life -= t;
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if(life<0)
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color[3]=0;
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else
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color[3] = life/MAXLIFE;
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}
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}
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void Ring::draw()
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{
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glPushMatrix();
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glColor4fv(color);
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glTranslatef(posx,posy,0);
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glRotatef(angle,0,0,1);
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glScalef(7,7,7);
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mesh.draw();
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glPopMatrix();
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}
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bool Ring::isAlive() const
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{
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return life>0;
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}
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void Ring::updateAll(float t)
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{
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for(int i=0;i<MAXRINGS;++i) {
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if(rings[i].isAlive()) {
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rings[i].update(t);
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}
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}
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}
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void Ring::drawAll() {
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glEnable(GL_BLEND);
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glDisable(GL_LIGHTING);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE);
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for(int i=0;i<MAXRINGS;++i) {
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if(rings[i].isAlive()) {
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rings[i].draw();
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}
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}
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glDisable(GL_BLEND);
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glEnable(GL_LIGHTING);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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}
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void Ring::addRing(const Ring& ring)
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{
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for(int i=0;i<MAXRINGS;++i) {
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if(rings[i].isAlive()==false) {
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rings[i] = ring;
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break;
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}
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}
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}
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void Ring::resetAll()
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{
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for(int i=0;i<MAXRINGS;++i)
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rings[i] = Ring();
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}
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