Jazz Jackrabbit 2 Online

/*Flash Grenade*/
/*Author: szmol96*/

bool doOnce = false;
const float gravity = 0.5;
int flashCount = 0;
int blindTime = 3; //The time your screen stays white in seconds.

jjPAL myPal;

void onLevelLoad() {
  jjObjectPresets[OBJECT::FIREBALLBULLET].behavior = flashNade;
  jjObjectPresets[OBJECT::FIREBALLBULLET].bulletHandling = HANDLING::IGNOREBULLET;
  jjObjectPresets[OBJECT::FIREBALLBULLET].playerHandling = HANDLING::PARTICLE;
  jjObjectPresets[OBJECT::FIREBALLBULLET].counterEnd = 5;
}

void flashNade(jjOBJ@ grenade) {
  jjPLAYER@ p = jjLocalPlayers[0];

  if (grenade.state == STATE::START) {
    grenade.xSpeed = p.direction * 5 + p.xSpeed;
    grenade.ySpeed = p.ySpeed - 5;
    grenade.state = STATE::FLY;
  }
  
  grenade.age++;
  if (grenade.age > 150) {
    grenade.state = STATE::EXPLODE;
    grenade.delete();
    jjPARTICLE@ smoke = jjAddParticle(PARTICLE::SMOKE);
      if (smoke !is null) {
        smoke.xPos = grenade.xPos;
        smoke.yPos = grenade.yPos;
      }
    jjPARTICLE@ smoke2 = jjAddParticle(PARTICLE::SMOKE);
      if (smoke2 !is null) {
        smoke2.xPos = grenade.xPos + 4;
        smoke2.yPos = grenade.yPos;
      }
    jjPARTICLE@ smoke3 = jjAddParticle(PARTICLE::SMOKE);
      if (smoke3 !is null) {
        smoke3.xPos = grenade.xPos - 4;
        smoke3.yPos = grenade.yPos;
      }
    jjPARTICLE@ spark = jjAddParticle(PARTICLE::SPARK);
      if (spark !is null) {
        spark.xPos = grenade.xPos;
        spark.yPos = grenade.yPos + 5;
        spark.ySpeed = -2;
      }
    jjPARTICLE@ spark2 = jjAddParticle(PARTICLE::SPARK);
      if (spark2 !is null) {
        spark2.xPos = grenade.xPos + 2;
        spark2.yPos = grenade.yPos - 5;
        spark2.xSpeed = -1;
      }
    jjPARTICLE@ spark3 = jjAddParticle(PARTICLE::SPARK);
      if (spark3 !is null) {
        spark3.xPos = grenade.xPos - 2;
        spark3.yPos = grenade.yPos - 5;
        spark3.xSpeed = 1;
      }
  }
  
  if (jjMaskedPixel(grenade.xPos + grenade.xSpeed, grenade.yPos)) {
    grenade.xSpeed = -1 * (grenade.xSpeed / 2);
  }
  if (jjMaskedPixel(grenade.xPos, grenade.yPos + grenade.ySpeed)) {
    grenade.ySpeed = -1 * (grenade.ySpeed / 2);
  } else {
    grenade.ySpeed = grenade.ySpeed + gravity;
  }

  grenade.xPos = grenade.xPos + grenade.xSpeed;
  grenade.yPos = grenade.yPos + grenade.ySpeed;
  
  if ((grenade.xPos - p.xPos) * p.direction > 0 && grenade.xPos > p.cameraX && grenade.yPos > p.cameraY && grenade.xPos < p.cameraX + 640 && grenade.yPos < p.cameraY + 480 && grenade.state==STATE::EXPLODE) {
    flashCount = blindTime * 70;
  }
  
  grenade.determineCurAnim(ANIM::AMMO, 1, true);
  grenade.determineCurFrame();
  grenade.draw();
}

void onPlayer(jjPLAYER@ p) {
  if (flashCount > 0) {
    if (doOnce == false) {
      myPal.fill(255, 255, 255, 1);
      myPal.apply();
      doOnce = true;
    }
    flashCount--;
  } else {
    if (doOnce == true) {
      myPal.reset();
      myPal.apply();
      doOnce = false;
    }
  }
}