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Seaweed.cpp (1711B)

      1 #include "Seaweed.h"
      2 #include "../core/Aquarium.h"
      3 #include "../utils/Random.h"
      4 #include "../utils/defs.h"
      5 
      6 Seaweed::Seaweed()
      7     : Entity(),
      8       height(Random::intInRange(SEAWEED_MIN_HEIGHT, SEAWEED_MAX_HEIGHT)),
      9       speed(Random::floatInRange(0.1f, 0.3f)),
     10       lifetime(Random::intInRange(SEAWEED_MIN_LIFETIME, SEAWEED_MAX_LIFETIME)) {
     11 
     12   x = Random::intInRange(0, Aquarium::getInstance().getWidth());
     13   y = Aquarium::getInstance().getHeight() - height;
     14 
     15   current_image.resize(height);
     16   current_mask.resize(height);
     17   generateCurrentFrame();
     18 }
     19 
     20 void Seaweed::update() noexcept {
     21   frame += speed;
     22   if (frame >= 1.0f) {
     23     pattern_flipped = !pattern_flipped;
     24     frame -= 1.0f;
     25     frame_dirty = true; // mark frame as needing regeneration
     26   }
     27   --lifetime;
     28 }
     29 
     30 const std::vector<std::string> &Seaweed::getImage() const {
     31   if (frame_dirty) {
     32     generateCurrentFrame();
     33     frame_dirty = false;
     34   }
     35   return current_image;
     36 }
     37 
     38 const std::vector<std::string> &Seaweed::getMask() const {
     39   if (frame_dirty) {
     40     generateCurrentFrame();
     41     frame_dirty = false;
     42   }
     43   return current_mask;
     44 }
     45 
     46 void Seaweed::generateCurrentFrame() const {
     47   for (size_t i = 0; i < height; ++i) {
     48     const bool use_left = (i % 2 == 0) ^ pattern_flipped;
     49     const char ch = use_left ? PATTERN_LEFT : PATTERN_RIGHT;
     50     const int offset = use_left ? 0 : 1;
     51 
     52     current_image[i] = std::string(offset, ' ') + ch;
     53     current_mask[i] = std::string(current_image[i].size(), 'g');
     54   }
     55 }
     56 
     57 bool Seaweed::shouldBeRemoved() const noexcept { return lifetime == 0; }
     58 
     59 std::unique_ptr<Entity> Seaweed::createReplacement() const {
     60   return std::make_unique<Seaweed>();
     61 }
     62 
     63 int Seaweed::getPreferredLayer() const noexcept { return 1; }