339 lines
11 KiB
C++
339 lines
11 KiB
C++
#include "core/jail/jdraw8.hpp"
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#include <fstream>
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#include <string>
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#include "core/resources/resource_cache.hpp"
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#include "core/resources/resource_helper.hpp"
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#if defined(__clang__)
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunused-but-set-variable"
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#elif defined(__GNUC__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
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#endif
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// NOLINTBEGIN(clang-analyzer-unix.Malloc): codi extern de tercers, no l'auditem.
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#include <gif.h> // tercer-part: resolt via SYSTEM include path (source/external/)
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// NOLINTEND(clang-analyzer-unix.Malloc)
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#if defined(__clang__)
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#pragma clang diagnostic pop
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#elif defined(__GNUC__)
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#pragma GCC diagnostic pop
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#endif
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Jd8::Surface screen = nullptr;
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Jd8::Palette main_palette = nullptr;
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Uint32* pixel_data = nullptr;
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void Jd8::init() {
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screen = new Uint8[64000]{};
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main_palette = new Color[256]{};
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pixel_data = new Uint32[std::size_t{320} * 200]{};
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}
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void Jd8::quit() {
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delete[] screen;
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delete[] main_palette;
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delete[] pixel_data;
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screen = nullptr;
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main_palette = nullptr;
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pixel_data = nullptr;
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}
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void Jd8::clearScreen(Uint8 color) {
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memset(screen, color, 64000);
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}
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auto Jd8::newSurface() -> Jd8::Surface {
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return new Uint8[64000]{};
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}
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// Helper intern: deriva el basename d'una ruta per a buscar al Cache.
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static auto pathBasename(const char* file) -> std::string {
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std::string s = file;
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auto pos = s.find_last_of("/\\");
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return pos == std::string::npos ? s : s.substr(pos + 1);
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}
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auto Jd8::loadSurface(const char* file) -> Jd8::Surface {
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// Prova primer el Resource::Cache. Si l'asset és precarregat, copiem
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// els 64KB des del cache (microsegons) i ens estalviem la decodificació
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// GIF. Mantenim el contracte de la funció: el caller rep un buffer
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// fresc que ha d'alliberar amb Jd8::freeSurface.
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if (Resource::Cache::get() != nullptr) {
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try {
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const auto& cached = Resource::Cache::get()->getSurfacePixels(pathBasename(file));
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Jd8::Surface image = Jd8::newSurface();
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memcpy(image, cached.data(), 64000);
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return image;
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} catch (const std::exception&) {
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// @INTENTIONAL: no està al cache (asset no llistat al manifest), fallback al loader.
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}
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}
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auto buffer = ResourceHelper::loadFile(file);
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unsigned short w;
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unsigned short h;
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Uint8* pixels = LoadGif(buffer.data(), &w, &h);
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if (pixels == nullptr) {
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printf("Unable to load bitmap: %s\n", SDL_GetError());
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exit(1);
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}
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Jd8::Surface image = Jd8::newSurface();
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memcpy(image, pixels, 64000);
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free(pixels);
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return image;
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}
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auto Jd8::loadPalette(const char* file) -> Jd8::Palette {
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// Sempre retorna un buffer de 256 colors reservat amb `new Color[256]`
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// — el caller és responsable d'alliberar-lo amb `delete[]` (o lliurar-ne
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// l'ownership a `Jd8::setScreenPalette`).
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auto* palette = new Color[256];
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if (Resource::Cache::get() != nullptr) {
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try {
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const auto& cached = Resource::Cache::get()->getPaletteBytes(pathBasename(file));
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memcpy(palette, cached.data(), 768);
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return palette;
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} catch (const std::exception&) {
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// @INTENTIONAL: no està al cache, fallback a lectura + LoadPalette.
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}
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}
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auto buffer = ResourceHelper::loadFile(file);
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Uint8* raw = LoadPalette(buffer.data()); // external malloc
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memcpy(palette, raw, 768);
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free(raw);
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return palette;
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}
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void Jd8::setScreenPalette(Jd8::Palette palette) {
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if (main_palette == palette) {
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return;
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}
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delete[] main_palette;
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main_palette = palette;
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}
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void Jd8::fillSquare(int ini, int height, Uint8 color) {
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const int OFFSET = ini * 320;
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const int SIZE = height * 320;
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memset(&screen[OFFSET], color, SIZE);
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}
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void Jd8::fillRect(int x, int y, int w, int h, Uint8 color) {
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if (x < 0) {
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w += x;
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x = 0;
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}
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if (y < 0) {
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h += y;
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y = 0;
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}
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if (x + w > 320) {
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w = 320 - x;
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}
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if (y + h > 200) {
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h = 200 - y;
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}
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if (w <= 0 || h <= 0) {
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return;
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}
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for (int row = y; row < y + h; ++row) {
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memset(&screen[x + (row * 320)], color, w);
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}
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}
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void Jd8::blit(const Uint8* surface) {
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memcpy(screen, surface, 64000);
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}
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void Jd8::blit(int x, int y, const Uint8* surface, int sx, int sy, int sw, int sh) {
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int src_pointer = sx + (sy * 320);
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int dst_pointer = x + (y * 320);
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for (int i = 0; i < sh; i++) {
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memcpy(&screen[dst_pointer], &surface[src_pointer], sw);
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src_pointer += 320;
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dst_pointer += 320;
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}
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}
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void Jd8::blitToSurface(int x, int y, const Uint8* surface, int sx, int sy, int sw, int sh, Jd8::Surface dest) {
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int src_pointer = sx + (sy * 320);
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int dst_pointer = x + (y * 320);
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for (int i = 0; i < sh; i++) {
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memcpy(&dest[dst_pointer], &surface[src_pointer], sw);
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src_pointer += 320;
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dst_pointer += 320;
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}
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}
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void Jd8::blitCK(int x, int y, const Uint8* surface, int sx, int sy, int sw, int sh, Uint8 colorkey) {
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int src_pointer = sx + (sy * 320);
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int dst_pointer = x + (y * 320);
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for (int j = 0; j < sh; j++) {
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for (int i = 0; i < sw; i++) {
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if (surface[src_pointer + i] != colorkey) {
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screen[dst_pointer + i] = surface[src_pointer + i];
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}
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}
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src_pointer += 320;
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dst_pointer += 320;
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}
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}
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void Jd8::blitCKCut(int x, int y, const Uint8* surface, int sx, int sy, int sw, int sh, Uint8 colorkey) {
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int src_pointer = sx + (sy * 320);
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int dst_pointer = x + (y * 320);
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for (int j = 0; j < sh; j++) {
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for (int i = 0; i < sw; i++) {
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if (surface[src_pointer + i] != colorkey && (x + i >= 0) && (y + j >= 0) && (x + i < 320) && (y + j < 200)) {
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screen[dst_pointer + i] = surface[src_pointer + i];
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}
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}
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src_pointer += 320;
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dst_pointer += 320;
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}
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}
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void Jd8::blitCKScroll(int y, const Uint8* surface, int sx, int sy, int sh, Uint8 colorkey) {
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int dst_pointer = y * 320;
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for (int j = sy; j < sy + sh; j++) {
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for (int i = 0; i < 320; i++) {
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int x = (i + sx) % 320;
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if (surface[x + (j * 320)] != colorkey) {
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screen[dst_pointer] = surface[x + (j * 320)];
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}
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dst_pointer++;
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}
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}
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}
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void Jd8::blitCKToSurface(int x, int y, const Uint8* surface, int sx, int sy, int sw, int sh, Jd8::Surface dest, Uint8 colorkey) {
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int src_pointer = sx + (sy * 320);
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int dst_pointer = x + (y * 320);
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for (int j = 0; j < sh; j++) {
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for (int i = 0; i < sw; i++) {
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if (surface[src_pointer + i] != colorkey) {
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dest[dst_pointer + i] = surface[src_pointer + i];
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}
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}
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src_pointer += 320;
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dst_pointer += 320;
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}
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}
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void Jd8::flip() {
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// Converteix el framebuffer indexat (paletted) a ARGB (pixel_data).
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// El Director crida aquesta funció després del tick de cada escena
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// per preparar el frame abans de presentar-lo. Ja no fa yield —
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// tot corre en un sol thread sense fibers des de Phase B.2.
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for (int x = 0; x < 320; x++) {
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for (int y = 0; y < 200; y++) {
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Uint32 color = 0xFF000000 + main_palette[screen[x + (y * 320)]].r + (main_palette[screen[x + (y * 320)]].g << 8) + (main_palette[screen[x + (y * 320)]].b << 16);
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pixel_data[x + (y * 320)] = color;
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}
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}
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}
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auto Jd8::getFramebuffer() -> Uint32* {
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return pixel_data;
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}
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void Jd8::freeSurface(Jd8::Surface surface) { // NOLINT(readability-non-const-parameter): allibera memòria, no pot ser const
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delete[] surface;
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}
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auto Jd8::getPixel(const Uint8* surface, int x, int y) -> Uint8 {
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return surface[x + (y * 320)];
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}
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void Jd8::putPixel(Jd8::Surface surface, int x, int y, Uint8 pixel) {
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surface[x + (y * 320)] = pixel;
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}
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void Jd8::setPaletteColor(Uint8 index, Uint8 r, Uint8 g, Uint8 b) {
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main_palette[index].r = r << 2;
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main_palette[index].g = g << 2;
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main_palette[index].b = b << 2;
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}
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// Màquina d'estats del fade. Evita que JD8_FadeOut/JD8_FadeToPal hagen de
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// mantindre whiles interns. Cada pas aplica un delta a la paleta activa i
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// el caller decideix quan fer Flip.
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namespace {
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enum class FadeType : std::uint8_t {
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NONE = 0,
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OUT,
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TO_PAL,
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};
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constexpr int FADE_STEPS = 32;
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FadeType fade_type = FadeType::NONE;
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Color fade_target[256];
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int fade_step = 0;
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void applyFadeStep() {
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if (fade_type == FadeType::OUT) {
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for (int i = 0; i < 256; i++) {
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main_palette[i].r = main_palette[i].r >= 8 ? main_palette[i].r - 8 : 0;
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main_palette[i].g = main_palette[i].g >= 8 ? main_palette[i].g - 8 : 0;
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main_palette[i].b = main_palette[i].b >= 8 ? main_palette[i].b - 8 : 0;
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}
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} else if (fade_type == FadeType::TO_PAL) {
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for (int i = 0; i < 256; i++) {
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main_palette[i].r = main_palette[i].r <= int(fade_target[i].r) - 8
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? main_palette[i].r + 8
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: fade_target[i].r;
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main_palette[i].g = main_palette[i].g <= int(fade_target[i].g) - 8
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? main_palette[i].g + 8
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: fade_target[i].g;
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main_palette[i].b = main_palette[i].b <= int(fade_target[i].b) - 8
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? main_palette[i].b + 8
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: fade_target[i].b;
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}
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}
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}
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} // namespace
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void Jd8::fadeStartOut() {
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fade_type = FadeType::OUT;
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fade_step = 0;
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}
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void Jd8::fadeStartToPal(const Color* pal) {
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fade_type = FadeType::TO_PAL;
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memcpy(fade_target, pal, sizeof(Color) * 256);
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fade_step = 0;
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}
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auto Jd8::fadeIsActive() -> bool {
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return fade_type != FadeType::NONE;
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}
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auto Jd8::fadeTickStep() -> bool {
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if (fade_type == FadeType::NONE) {
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return true;
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}
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applyFadeStep();
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fade_step++;
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if (fade_step >= FADE_STEPS) {
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fade_type = FadeType::NONE;
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return true;
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}
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return false;
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}
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// Els shims bloquejants `JD8_FadeOut` i `JD8_FadeToPal` han estat
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// eliminats a Phase B.2: feien un bucle de 32 iteracions amb `Jd8::flip`
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// entre cada una que només funcionava mentre l'entorn tenia fibers i
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// `Jd8::flip` cedia el control al Director. Ara tot fade es fa tick a
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// tick via `Scenes::PaletteFade` (que encapsula `Jd8::fadeStartOut` /
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// `Jd8::fadeStartToPal` + `Jd8::fadeTickStep`).
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