Tilemap YAML: sala piràmide renderitzada amb tiles reals de tomb.gif i caixa de debug llevada (v0.13.0)

2026-04-19 19:35:21 +02:00
1 parent c921833537
commit 46a578fd86
@@ -0,0 +1,138 @@
+#include "game/map/tilemap.hpp"
+
+#include <algorithm>
+#include <cstddef>
+#include <fstream>
+#include <iostream>
+#include <sstream>
+#include <stdexcept>
+#include <unordered_map>
+#include <utility>
+
+#include "core/rendering/screen.hpp"
+#include "core/rendering/surface.hpp"
+#include "core/resources/resource_cache.hpp"
+#include "external/fkyaml_node.hpp"
+
+namespace {
+
+    // Cada símbol del grid es mapeja a (col, fila) dins del tileset.
+    using TileCoord = std::pair<int, int>;
+    using Legend = std::unordered_map<char, TileCoord>;
+
+    auto splitLines(const std::string& text) -> std::vector<std::string> {
+        std::vector<std::string> lines;
+        std::istringstream iss(text);
+        std::string line;
+        while (std::getline(iss, line)) {
+            if (!line.empty()) { lines.push_back(line); }
+        }
+        return lines;
+    }
+
+    // La llegenda usa índexs lineals del tileset (esq→dre, dalt→baix).
+    // Els convertim a (col, fila) amb el nombre de tiles per fila del tileset.
+    auto parseLegend(const fkyaml::node& node, int tileset_cols) -> Legend {
+        Legend legend;
+        for (auto it = node.begin(); it != node.end(); ++it) {
+            const auto KEY_STR = it.key().get_value<std::string>();
+            if (KEY_STR.empty()) { continue; }
+            const auto INDEX = it.value().get_value<int>();
+            const int COL = INDEX % tileset_cols;
+            const int ROW = INDEX / tileset_cols;
+            legend[KEY_STR.front()] = {COL, ROW};
+        }
+        return legend;
+    }
+
+    // Copia un tile (col, fila) del tileset al buffer ARGB a la posició de
+    // destí (dest_x, dest_y). Els píxels amb l'índex de transparència del
+    // tileset es deixen com estan al buffer (alpha=0 per defecte).
+    void blitTile(const Surface& tileset, int tile_size, int src_col, int src_row, std::vector<std::uint32_t>& dest, int dest_w, int dest_x, int dest_y) {
+        const int SRC_X0 = src_col * tile_size;
+        const int SRC_Y0 = src_row * tile_size;
+        const auto TRANSPARENT = tileset.getTransparentColor();
+        for (int y = 0; y < tile_size; ++y) {
+            for (int x = 0; x < tile_size; ++x) {
+                const auto IDX = tileset.getPixel(SRC_X0 + x, SRC_Y0 + y);
+                if (IDX == TRANSPARENT) { continue; }
+                const auto ARGB = tileset.getPaletteColor(IDX);
+                const auto DST_OFFSET =
+                    (static_cast<std::size_t>(dest_y + y) * static_cast<std::size_t>(dest_w)) + static_cast<std::size_t>(dest_x + x);
+                dest[DST_OFFSET] = ARGB;
+            }
+        }
+    }
+
+}  // namespace
+
+Tilemap::Tilemap(const std::string& yaml_path) {
+    std::ifstream file(yaml_path);
+    if (!file.is_open()) {
+        throw std::runtime_error("Tilemap: no s'ha pogut obrir " + yaml_path);
+    }
+
+    auto yaml = fkyaml::node::deserialize(file);
+
+    const auto TILESET_PATH = yaml["tileset"].get_value<std::string>();
+    const auto TILE_SIZE = yaml["tile_size"].get_value<int>();
+    if (yaml.contains("origin")) {
+        origin_x_ = yaml["origin"][0].get_value<int>();
+        origin_y_ = yaml["origin"][1].get_value<int>();
+    }
+
+    // Carreguem el tileset al cache (idempotent) i el pillem per accedir
+    // als seus píxels i paleta. La paleta del tileset ve del GIF mateix.
+    // Ens cal abans de la llegenda per saber quants tiles per fila té.
+    const auto& cache_name = TILESET_PATH;
+    Resource::Cache::get().loadSurface(cache_name, TILESET_PATH);
+    const auto TILESET = Resource::Cache::get().getSurface(cache_name);
+    const int TILESET_COLS = TILESET->getWidth() / TILE_SIZE;
+
+    const auto LEGEND = parseLegend(yaml["legend"], TILESET_COLS);
+    const auto LINES = splitLines(yaml["data"].get_value<std::string>());
+
+    const int ROWS = static_cast<int>(LINES.size());
+    const int COLS = ROWS > 0 ? static_cast<int>(LINES.front().size()) : 0;
+    width_px_ = COLS * TILE_SIZE;
+    height_px_ = ROWS * TILE_SIZE;
+    pixels_.assign(
+        static_cast<std::size_t>(width_px_) * static_cast<std::size_t>(height_px_),
+        0U);
+
+    for (int row = 0; row < ROWS; ++row) {
+        const auto& line = LINES[row];
+        for (int col = 0; col < COLS && col < static_cast<int>(line.size()); ++col) {
+            const char SYMBOL = line[col];
+            const auto IT = LEGEND.find(SYMBOL);
+            if (IT == LEGEND.end()) { continue; }
+            blitTile(*TILESET, TILE_SIZE, IT->second.first, IT->second.second, pixels_, width_px_, col * TILE_SIZE, row * TILE_SIZE);
+        }
+    }
+
+    std::cout << "Tilemap: " << COLS << "x" << ROWS << " tiles ("
+              << width_px_ << "x" << height_px_ << " px) des de " << yaml_path << '\n';
+}
+
+void Tilemap::render() const {
+    auto& screen = Screen::get();
+    auto* canvas = screen.getCanvasArgb();
+    const int CANVAS_W = screen.getCanvasWidth();
+    const int CANVAS_H = screen.getCanvasHeight();
+
+    // Clipping de files: només pintem les que cauen dins del canvas.
+    const int Y_START = std::max(0, -origin_y_);
+    const int Y_END = std::min(height_px_, CANVAS_H - origin_y_);
+    const int X_START = std::max(0, -origin_x_);
+    const int X_END = std::min(width_px_, CANVAS_W - origin_x_);
+
+    for (int y = Y_START; y < Y_END; ++y) {
+        const auto* src_row = &pixels_[static_cast<std::size_t>(y) * static_cast<std::size_t>(width_px_)];
+        auto* dst_row =
+            &canvas[(static_cast<std::size_t>(origin_y_ + y) * static_cast<std::size_t>(CANVAS_W)) + static_cast<std::size_t>(origin_x_)];
+        for (int x = X_START; x < X_END; ++x) {
+            const auto PIXEL = src_row[x];
+            if ((PIXEL & 0xFF000000U) != 0U) { dst_row[x] = PIXEL; }
+        }
+    }
+}