74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*
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* Copyright 2016 - 2021 gary@drinkingtea.net
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <ox/claw/claw.hpp>
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#include <nostalgia/core/gfx.hpp>
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#include <nostalgia/core/gfx.hpp>
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#include "gfx.hpp"
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namespace nostalgia::core {
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static ox::Result<ox::Vector<char>> readFile(Context *ctx, const ox::FileAddress &file) {
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oxRequire(stat, ctx->rom->stat(file));
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ox::Vector<char> buff(stat.size);
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oxReturnError(ctx->rom->read(file, buff.data(), buff.size()));
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return buff;
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}
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template<typename T>
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ox::Result<T> readObj(Context *ctx, const ox::FileAddress &file) {
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oxRequire(buff, readFile(ctx, file));
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T t;
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oxReturnError(ox::readClaw(buff.data(), buff.size(), &t));
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return t;
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}
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ox::Error initConsole(Context *ctx) {
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constexpr auto TilesheetAddr = "/TileSheets/Charset.ng";
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return loadBgTileSheet(ctx, 0, TilesheetAddr);
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}
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ox::Error loadSpriteTileSheet(Context*,
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int,
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ox::FileAddress,
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ox::FileAddress) {
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return OxError(0);
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}
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ox::Error loadBgTileSheet(Context *ctx,
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int section,
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ox::FileAddress tilesheetPath,
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ox::FileAddress palettePath) {
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oxRequire(tilesheet, readObj<NostalgiaGraphic>(ctx, tilesheetPath));
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if (!palettePath) {
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palettePath = tilesheet.defaultPalette;
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}
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oxRequire(palette, readObj<NostalgiaPalette>(ctx, palettePath));
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const unsigned bytesPerTile = tilesheet.bpp == 8 ? 64 : 32;
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const auto tiles = tilesheet.pixels.size() / bytesPerTile;
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constexpr int width = 8;
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const int height = 8 * tiles;
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ox::Vector<uint32_t> pixels;
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if (bytesPerTile == 64) { // 8 BPP
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pixels.resize(tilesheet.pixels.size());
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for (std::size_t i = 0; i < tilesheet.pixels.size(); ++i) {
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pixels[i] = toColor32(palette.colors[tilesheet.pixels[i]]);
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}
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} else { // 4 BPP
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pixels.resize(tilesheet.pixels.size() * 2);
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for (std::size_t i = 0; i < tilesheet.pixels.size(); ++i) {
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pixels[i * 2 + 0] = toColor32(palette.colors[tilesheet.pixels[i] & 0xF]);
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pixels[i * 2 + 1] = toColor32(palette.colors[tilesheet.pixels[i] >> 4]);
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}
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}
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return renderer::loadBgTexture(ctx, section, pixels.data(), width, height);
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}
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}
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