330 lines
13 KiB
C++
330 lines
13 KiB
C++
#include "game/entities/concrete/whip_attack.hpp"
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#include <algorithm>
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#include <filesystem>
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#include <iterator>
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#include <string>
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#include <vector>
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#include "game/entities/entity_factory.hpp"
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#include "game/entities/entity_manager.hpp"
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#include "game/entities/player.hpp"
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#include "game/gameplay_config.hpp"
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#include "game/map/map.hpp"
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namespace {
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// Llig una entrada `sprites.<dir>: { path, size: [w, h] }` del YAML.
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// Si manquen camps, retorna un DirSprite buit (queda invalidat al
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// configure() per `surface_key.empty()`).
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auto readDirSprite(const fkyaml::node& s) -> WhipAttack::DirSprite {
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WhipAttack::DirSprite sprite;
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if (s.contains("path")) {
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const auto REL = s["path"].get_value<std::string>();
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sprite.surface_key = std::filesystem::path(REL).filename().string();
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}
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if (s.contains("size")) {
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const auto& sz = s["size"];
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if (sz.is_sequence() && sz.size() == 2) {
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sprite.frame_w = static_cast<float>(sz[0].get_value<int>());
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sprite.frame_h = static_cast<float>(sz[1].get_value<int>());
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}
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}
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return sprite;
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}
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// Llig el camp `active_frames` del bloc `animations.swing` — específic
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// del látigo: els índexs llistats són els frames on la hitbox aplica
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// dany (wind-up i recovery no danyen). La resta de l'animació la
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// construeix `AnimationComponent::fromYaml`.
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void readActiveFrames(const fkyaml::node& yaml, std::vector<int>& active_out) {
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if (!yaml.contains("animations") || !yaml["animations"].contains("swing")) { return; }
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const auto& sw = yaml["animations"]["swing"];
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if (!sw.contains("active_frames")) { return; }
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std::ranges::transform(sw["active_frames"], std::back_inserter(active_out), [](const fkyaml::node& f) { return f.template get_value<int>(); });
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}
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} // namespace
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WhipAttack::WhipAttack(const fkyaml::node& yaml) {
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name_ = yaml.contains("name") ? yaml["name"].get_value<std::string>() : std::string("whip_attack");
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collides_ = false;
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interactable_ = false;
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if (yaml.contains("sprites")) {
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const auto& s = yaml["sprites"];
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if (s.contains("north")) { sprite_north_ = readDirSprite(s["north"]); }
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if (s.contains("south")) { sprite_south_ = readDirSprite(s["south"]); }
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if (s.contains("east")) { sprite_east_ = readDirSprite(s["east"]); }
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if (s.contains("west")) { sprite_west_ = readDirSprite(s["west"]); }
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}
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anim_swing_ = AnimationComponent::fromYaml(yaml, "swing");
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readActiveFrames(yaml, active_frames_);
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anim_ = anim_swing_;
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}
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void WhipAttack::configure(Direction dir, const SDL_FRect& owner_box, float range_px) {
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direction_ = dir;
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range_px_ = range_px;
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// Draw rect (= pixel_rect_): cobreix tot el sprite del látigo segons
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// la taula d'offsets del disseny:
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// E: (player.x - 16, player.y ), 80×32
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// W: (player.x - 48, player.y ), 80×32
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// N: (player.x, player.y - 48 ), 16×96
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// S: (player.x, player.y - 16 ), 16×96
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const auto& chosen = spriteFor(dir);
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SDL_FRect draw{0.0F, 0.0F, chosen.frame_w, chosen.frame_h};
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switch (dir) {
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case Direction::EAST:
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draw.x = owner_box.x - 16.0F;
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draw.y = owner_box.y;
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break;
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case Direction::WEST:
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draw.x = owner_box.x - 48.0F;
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draw.y = owner_box.y;
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break;
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case Direction::NORTH:
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draw.x = owner_box.x;
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draw.y = owner_box.y - 48.0F;
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break;
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case Direction::SOUTH:
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draw.x = owner_box.x;
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draw.y = owner_box.y - 16.0F;
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break;
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}
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setPixelRect(draw);
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// Damage rect: 48×16 (E/W) o 16×48 (N/S) al nivell dels peus del
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// jugador (els últims 16 px del seu pixel_rect — convenció estàndard
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// del player AEE), pegat al borde en la direcció d'atac.
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// computeDamageRect rep la cantonada del rect MÀXIM (sense retallar)
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// i recorre internament la línia per topar amb el primer bloquejador.
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const float COLLISION_TOP_Y = owner_box.y + owner_box.h - 16.0F;
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const float OWNER_RIGHT = owner_box.x + owner_box.w;
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const float OWNER_BOTTOM = owner_box.y + owner_box.h;
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float spawn_x = 0.0F;
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float spawn_y = 0.0F;
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switch (dir) {
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case Direction::EAST:
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spawn_x = OWNER_RIGHT;
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spawn_y = COLLISION_TOP_Y;
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break;
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case Direction::WEST:
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spawn_x = owner_box.x - range_px;
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spawn_y = COLLISION_TOP_Y;
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break;
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case Direction::NORTH:
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spawn_x = owner_box.x;
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spawn_y = COLLISION_TOP_Y - range_px;
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break;
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case Direction::SOUTH:
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spawn_x = owner_box.x;
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spawn_y = OWNER_BOTTOM;
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break;
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}
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computeDamageRect(dir, spawn_x, spawn_y, range_px);
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// Snapshot del feet_y del jugador. La convenció estàndard del Player
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// AEE té el seu feet_y a la base inferior del pixel_rect (collision
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// 16×16 als últims 16 px del sprite 16×32), així que owner_box.y +
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// owner_box.h reprodueix `Player::getFeetY()` exactament.
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owner_feet_y_ = owner_box.y + owner_box.h;
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if (anim_.has_value()) { anim_->reset(); }
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}
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auto WhipAttack::getFeetY() const -> float {
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return owner_feet_y_;
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}
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void WhipAttack::setWorldContext(EntityManager* manager, const std::vector<Player*>* players) {
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entity_manager_ = manager;
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players_ = players;
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}
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void WhipAttack::computeDamageRect(Direction dir, float spawn_x, float spawn_y, float range_px) {
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// Caminem píxel a píxel des de la vora del jugador en la direcció
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// d'atac, fins a topar amb un mur o sarc, o esgotar `range_px`.
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// L'amplada perpendicular és `tile_size` (els passadissos del joc
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// tenen exactament aquesta mida i l'atac és lateral).
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//
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// Si el tweak `whip.damage_pierces_walls` està actiu, la hitbox
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// ignora els sarcòfags (passa a través del bloc complet) però
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// continua respectant el `insidePlayfield`: fora de la sala no hi
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// ha res a colpejar i ampliar-ho generaria visuals/edge cases
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// estranys. El mur extern, doncs, sempre retalla.
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const auto TILE = static_cast<float>(Map::tile_size);
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const int MAX_PX = static_cast<int>(std::max(0.0F, range_px));
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const auto MAX = static_cast<float>(MAX_PX);
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const bool PIERCES = GameplayConfig::get().whipDamagePiercesWalls();
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float length = 0.0F;
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auto try_probe = [&](float l) -> bool {
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SDL_FRect probe{0.0F, 0.0F, 0.0F, 0.0F};
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switch (dir) {
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case Direction::EAST:
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probe = {.x = spawn_x, .y = spawn_y, .w = l, .h = TILE};
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break;
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case Direction::WEST:
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// Per a W, la cara "del jugador" és la dreta; com creix
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// `l`, la vora esquerra retrocedeix. spawn_x apunta al
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// límit esquerre amb l = MAX (cas no retallat).
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probe = {.x = spawn_x + (MAX - l), .y = spawn_y, .w = l, .h = TILE};
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break;
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case Direction::SOUTH:
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probe = {.x = spawn_x, .y = spawn_y, .w = TILE, .h = l};
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break;
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case Direction::NORTH:
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probe = {.x = spawn_x, .y = spawn_y + (MAX - l), .w = TILE, .h = l};
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break;
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}
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if (!Map::insidePlayfield(probe)) { return false; }
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if (PIERCES) { return true; }
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return !Map::collides(probe);
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};
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for (int i = 1; i <= MAX_PX; ++i) {
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const auto L = static_cast<float>(i);
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if (try_probe(L)) {
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length = L;
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} else {
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break;
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}
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}
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switch (dir) {
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case Direction::EAST:
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damage_rect_ = {.x = spawn_x, .y = spawn_y, .w = length, .h = TILE};
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return;
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case Direction::WEST:
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damage_rect_ = {.x = spawn_x + (MAX - length), .y = spawn_y, .w = length, .h = TILE};
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return;
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case Direction::SOUTH:
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damage_rect_ = {.x = spawn_x, .y = spawn_y, .w = TILE, .h = length};
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return;
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case Direction::NORTH:
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damage_rect_ = {.x = spawn_x, .y = spawn_y + (MAX - length), .w = TILE, .h = length};
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return;
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}
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}
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auto WhipAttack::getSurfaceKey() const -> const std::string& {
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return spriteFor(direction_).surface_key;
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}
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auto WhipAttack::spriteFor(Direction dir) const -> const DirSprite& {
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switch (dir) {
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case Direction::NORTH:
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return sprite_north_;
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case Direction::SOUTH:
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return sprite_south_;
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case Direction::EAST:
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return sprite_east_;
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case Direction::WEST:
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return sprite_west_;
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}
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return sprite_east_;
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}
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void WhipAttack::update(float delta_time) {
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Entity::update(delta_time);
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if (isFrameActive()) { applyDamage(); }
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if (anim_.has_value() && anim_->completed()) { markDead(); }
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}
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namespace {
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// (El mapping WhipAttack::Direction → Mummy::Direction viu ara a
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// mummy.cpp, on s'usa des de `Mummy::onWhipHit`. Aquí només queda el
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// mapping a Player::Cardinal — usat per al friendly-fire entre
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// jugadors, que no és polimòrfic via Entity.)
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auto whipDirToPlayerCardinal(WhipAttack::Direction d) -> Player::Cardinal {
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switch (d) {
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case WhipAttack::Direction::NORTH:
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return Player::Cardinal::NORTH;
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case WhipAttack::Direction::SOUTH:
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return Player::Cardinal::SOUTH;
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case WhipAttack::Direction::EAST:
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return Player::Cardinal::EAST;
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case WhipAttack::Direction::WEST:
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return Player::Cardinal::WEST;
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}
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return Player::Cardinal::NONE;
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}
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auto playerIsTargetable(const Player* p) -> bool {
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if (p == nullptr) { return false; }
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const auto STATE = p->getState();
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return STATE != Player::State::HURT && STATE != Player::State::EXITED && STATE != Player::State::DISABLED;
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}
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// Tracta una entitat candidata: si la seva caixa solapa amb
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// `damage_rect`, delega la decisió a `entity->onWhipHit(attack)`.
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// Cada entitat decideix què fer (Mummy entra HURT, Torch retorna
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// false sense efecte, RollingRock no override → no-op). El retorn
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// true marca el set `already_hit` per evitar segons impactes dins del
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// mateix swing. Polimorfisme net — sense dynamic_cast.
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void hitEntityIfApplicable(
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Entity* entity,
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const SDL_FRect& damage_rect,
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WhipAttack* attack,
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std::unordered_set<void*>& already_hit) {
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if (entity == nullptr || entity->isDead()) { return; }
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if (already_hit.contains(static_cast<void*>(entity))) { return; }
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const auto BOX = entity->getCollisionRect();
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if (!SDL_HasRectIntersectionFloat(&damage_rect, &BOX)) { return; }
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if (entity->onWhipHit(attack)) {
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already_hit.insert(static_cast<void*>(entity));
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}
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}
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void hitPlayerIfApplicable(
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Player* p,
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const Player* owner,
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const SDL_FRect& damage_rect,
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WhipAttack::Direction dir,
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std::unordered_set<void*>& already_hit) {
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if (p == owner || !playerIsTargetable(p)) { return; }
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// Tweak `combat.friendly_fire`: si està desactivat, els altres
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// jugadors són immunes al látigo aliat. L'owner ja queda exclòs
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// per la primera guarda; aquest filtre cobreix només cross-player.
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if (!GameplayConfig::get().friendlyFire()) { return; }
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if (already_hit.contains(static_cast<void*>(p))) { return; }
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const auto BOX = p->getBaseBox();
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if (!SDL_HasRectIntersectionFloat(&damage_rect, &BOX)) { return; }
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p->enterHurt(whipDirToPlayerCardinal(dir));
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already_hit.insert(static_cast<void*>(p));
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}
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} // namespace
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void WhipAttack::applyDamage() {
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if (entity_manager_ != nullptr) {
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// Iterem totes les entitats. La discriminació la fa cada una via
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// `onWhipHit`: Mummy entra HURT si és whippable, la resta retorna
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// false (no-op). El cost d'iterar antorxes/sarcs/forats és una
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// crida virtual buida cada una — menyspreable comparat amb la
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// claredat del callsite. Si demà un sarc vol trencar-se al
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// fueteig, només cal override de `onWhipHit` allà.
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for (auto* entity : entity_manager_->getEntities()) {
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hitEntityIfApplicable(entity, damage_rect_, this, already_hit_);
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}
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}
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if (players_ != nullptr) {
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for (auto* p : *players_) {
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hitPlayerIfApplicable(p, owner_, damage_rect_, direction_, already_hit_);
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}
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}
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}
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auto WhipAttack::isFrameActive() const -> bool {
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if (!anim_.has_value()) { return false; }
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const int FRAME = anim_->currentFrame();
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return std::ranges::any_of(active_frames_, [FRAME](int f) { return f == FRAME; });
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}
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REGISTER_ENTITY("whip_attack", WhipAttack)
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