96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
#include "../assets.hpp"
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#include "font_writer.hpp"
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#include <PSX/GPU/gpu.hpp>
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#include <PSX/GPU/gpu_primitives.hpp>
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namespace FontWriter {
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using namespace JabyEngine;
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FontWriter::Pool::Buffer FontWriter::Pool :: buffer[2];
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GPU::Link* FontWriter::Pool :: last_link = nullptr;
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GPU::SPRT_16::Linked* FontWriter::Pool :: text_ptr = nullptr;
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void FontWriter::Pool :: reset_links() {
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Pool::last_link = &Pool::buffer[GPU::Display::current_id].page;
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Pool::text_ptr = Pool::buffer[GPU::Display::current_id].text_buffer;
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}
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void FontWriter::Pool::Buffer :: setup() {
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this->page = GPU::TexPage::create(GPU::PositionU16::create(Assets::FontTIM.get_texture_x(), Assets::FontTIM.get_texture_y()), GPU::TexturePageColor::$4bit).linked();
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for(auto& single_char : this->text_buffer) {
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single_char.set_link_identitiy();
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single_char->set_identitiy();
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single_char->clut = GPU::PageClut::create(Assets::FontTIM.get_clut_x(), Assets::FontTIM.get_clut_y());
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}
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}
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void FontWriter::Pool :: setup() {
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Pool::reset_links();
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for(auto& buffer : Pool::buffer) {
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buffer.setup();
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}
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}
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void FontWriter::Pool :: render() {
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const auto render_id = GPU::Display::current_id ^ 1;
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Pool::last_link->terminate();
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GPU::render(Pool::buffer[render_id].page);
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reset_links();
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}
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Position FontWriter :: write(Position pos, const char* text) {
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static const auto parse_esc = [](const char* text, const GPU::Color24& color) -> pair<const char*, GPU::Color24> {
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static const auto char_to_color = [](char number) constexpr -> uint8_t {
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return (1 << (number - '0')) - 1;
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};
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if(text[0] != '[' || text[2] != ';' || text[4] != ';' || text[6] != 'm') {
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return {text, color};
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}
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return {text + 7, GPU::Color24::from_rgb(char_to_color(text[1]), char_to_color(text[3]), char_to_color(text[5]))};
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};
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const auto* cur_text_end = &Pool::buffer[GPU::Display::current_id].text_buffer[Pool::Buffer::BufferSize];
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const auto org_x = pos.x;
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auto font_color = GPU::Color24::Grey();
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while(Pool::text_ptr < cur_text_end) {
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const char cur_char = *text;
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text++;
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(*Pool::text_ptr)->position = pos;
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switch(cur_char) {
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case '\0':
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goto end;
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case '\n':
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pos.y += 16;
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pos.x = org_x;
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continue;
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case '\x1b':
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tie(text, font_color) = parse_esc(text, font_color);
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continue;
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case 'i':
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case '!':
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pos.x += 12;
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break;
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default:
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pos.x += 16;
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}
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const uint8_t char_id = cur_char - '!';
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(*Pool::text_ptr)->tex_offset = GPU::PageOffset::create(((char_id & 0xF) << 4), ((char_id >> 4) << 4));
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(*Pool::text_ptr)->color = font_color;
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Pool::last_link = &Pool::last_link->concat(*Pool::text_ptr);
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Pool::text_ptr++;
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}
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end:
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return pos;
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}
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}
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