262 lines
8.0 KiB
C++
262 lines
8.0 KiB
C++
#include "core/jail/jdraw8.hpp"
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#include <fstream>
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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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#include "external/gif.h"
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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 = NULL;
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JD8_Palette main_palette = NULL;
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Uint32* pixel_data = NULL;
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void JD8_Init() {
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screen = (JD8_Surface)calloc(1, 64000);
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main_palette = (JD8_Palette)calloc(1, 768);
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pixel_data = (Uint32*)calloc(1, 320 * 200 * 4);
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}
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void JD8_Quit() {
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if (screen != NULL) free(screen);
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if (main_palette != NULL) free(main_palette);
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if (pixel_data != NULL) free(pixel_data);
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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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JD8_Surface JD8_NewSurface() {
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JD8_Surface surface = (JD8_Surface)malloc(64000);
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memset(surface, 0, 64000);
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return surface;
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}
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JD8_Surface JD8_LoadSurface(const char* file) {
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auto buffer = ResourceHelper::loadFile(file);
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unsigned short w, h;
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Uint8* pixels = LoadGif(buffer.data(), &w, &h);
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if (pixels == NULL) {
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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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JD8_Palette JD8_LoadPalette(const char* file) {
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auto buffer = ResourceHelper::loadFile(file);
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return (JD8_Palette)LoadPalette(buffer.data());
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}
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void JD8_SetScreenPalette(JD8_Palette palette) {
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if (main_palette == palette) return;
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if (main_palette != NULL) free(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_Blit(JD8_Surface surface) {
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memcpy(screen, surface, 64000);
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}
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void JD8_Blit(int x, int y, JD8_Surface 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, JD8_Surface 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, JD8_Surface 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) screen[dst_pointer + i] = surface[src_pointer + i];
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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, JD8_Surface 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)) screen[dst_pointer + i] = surface[src_pointer + i];
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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, JD8_Surface 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) screen[dst_pointer] = surface[x + j * 320];
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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, JD8_Surface 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) dest[dst_pointer + i] = surface[src_pointer + i];
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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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Uint32* JD8_GetFramebuffer() {
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return pixel_data;
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}
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void JD8_FreeSurface(JD8_Surface surface) {
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free(surface);
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}
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Uint8 JD8_GetPixel(JD8_Surface surface, int x, int y) {
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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 FadeType {
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FADE_NONE = 0,
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FADE_OUT,
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FADE_TO_PAL,
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};
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constexpr int FADE_STEPS = 32;
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FadeType fade_type = FADE_NONE;
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Color fade_target[256];
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int fade_step = 0;
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void apply_fade_step() {
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if (fade_type == FADE_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 == FADE_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 = FADE_OUT;
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fade_step = 0;
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}
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void JD8_FadeStartToPal(JD8_Palette pal) {
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fade_type = FADE_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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bool JD8_FadeIsActive() {
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return fade_type != FADE_NONE;
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}
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bool JD8_FadeTickStep() {
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if (fade_type == FADE_NONE) return true;
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apply_fade_step();
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fade_step++;
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if (fade_step >= FADE_STEPS) {
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fade_type = FADE_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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