140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
/*
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* Copyright 2016 - 2022 Gary Talent (gary@drinkingtea.net). All rights reserved.
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*/
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#include <iostream>
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#include <nostalgia/geo/point.hpp>
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#include <nostalgia/core/consts.hpp>
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#include <nostalgia/core/media.hpp>
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#include <nostalgia/core/ptidxconv.hpp>
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#include "tilesheeteditor.hpp"
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namespace nostalgia::core {
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TileSheetEditor::TileSheetEditor(Context *ctx, const ox::String &path) {
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// build shaders
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oxThrowError(m_pixelsDrawer.buildShader());
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oxThrowError(m_pixelGridDrawer.buildShader());
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oxRequireT(img, readObj<NostalgiaGraphic>(ctx, path.c_str()));
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m_img = std::move(*img);
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oxThrowError(readObj<NostalgiaPalette>(ctx, m_img.defaultPalette).moveTo(&m_pal));
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}
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void TileSheetEditor::cut() {
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}
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void TileSheetEditor::copy() {
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}
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void TileSheetEditor::paste() {
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}
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void TileSheetEditor::draw() noexcept {
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constexpr Color32 bgColor = 0x717d7e;
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glClearColor(redf(bgColor), greenf(bgColor), bluef(bgColor), 1.f);
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glClear(GL_COLOR_BUFFER_BIT);
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m_pixelsDrawer.draw(m_updated, m_scrollOffset);
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m_pixelGridDrawer.draw(m_updated, m_scrollOffset);
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m_updated = false;
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}
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void TileSheetEditor::scrollV(const geo::Vec2 paneSz, float wheel, bool zoomMod) noexcept {
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const auto pixelSize = m_pixelsDrawer.pixelSize(paneSz);
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const ImVec2 sheetSize(pixelSize.x * static_cast<float>(m_img.columns) * TileWidth,
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pixelSize.y * static_cast<float>(m_img.rows) * TileHeight);
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if (zoomMod) {
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m_pixelSizeMod = ox::clamp(m_pixelSizeMod + wheel * 0.02f, 0.55f, 2.f);
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m_pixelsDrawer.setPixelSizeMod(m_pixelSizeMod);
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m_pixelGridDrawer.setPixelSizeMod(m_pixelSizeMod);
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m_updated = true;
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} else {
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m_scrollOffset.y -= wheel * 0.1f;
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}
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// adjust scroll offset in both cases because the image can be zoomed
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// or scrolled off screen
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m_scrollOffset.y = ox::clamp(m_scrollOffset.y, 0.f, sheetSize.y / 2);
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}
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void TileSheetEditor::scrollH(const geo::Vec2 paneSz, float wheelh) noexcept {
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const auto pixelSize = m_pixelsDrawer.pixelSize(paneSz);
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const ImVec2 sheetSize(pixelSize.x * static_cast<float>(m_img.columns) * TileWidth,
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pixelSize.y * static_cast<float>(m_img.rows) * TileHeight);
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m_scrollOffset.x += wheelh * 0.1f;
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m_scrollOffset.x = ox::clamp(m_scrollOffset.x, -(sheetSize.x / 2), 0.f);
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}
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void TileSheetEditor::clickPixel(const geo::Vec2 &paneSize, const geo::Vec2 &clickPos) noexcept {
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auto [x, y] = clickPos;
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const auto pixDrawSz = m_pixelsDrawer.pixelSize(paneSize);
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x /= paneSize.x;
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y /= paneSize.y;
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x += -m_scrollOffset.x / 2;
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y += m_scrollOffset.y / 2;
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x /= pixDrawSz.x;
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y /= pixDrawSz.y;
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const auto pt = geo::Point(static_cast<int>(x * 2), static_cast<int>(y * 2));
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const uint8_t palIdx = 0;
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m_img.setPixel(pt, palIdx);
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m_updated = true;
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}
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void TileSheetEditor::resize(const geo::Vec2 &sz) noexcept {
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m_pixelsDrawer.initBufferSet(sz, m_img, *m_pal);
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m_pixelGridDrawer.initBufferSet(sz, m_img);
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}
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const NostalgiaGraphic &TileSheetEditor::img() const {
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return m_img;
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}
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const NostalgiaPalette &TileSheetEditor::pal() const {
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return *m_pal;
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}
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bool TileSheetEditor::updated() const noexcept {
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return m_updated;
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}
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void TileSheetEditor::ackUpdate() noexcept {
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m_updated = false;
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}
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void TileSheetEditor::saveItem() {
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}
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void TileSheetEditor::getFillPixels(bool *pixels, geo::Point pt, int oldColor) const {
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const auto tileIdx = [this](const geo::Point &pt) noexcept {
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return ptToIdx(pt, m_img.columns) / PixelsPerTile;
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};
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// get points
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const auto leftPt = pt + geo::Point(-1, 0);
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const auto rightPt = pt + geo::Point(1, 0);
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const auto topPt = pt + geo::Point(0, -1);
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const auto bottomPt = pt + geo::Point(0, 1);
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// calculate indices
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const auto idx = ptToIdx(pt, m_img.columns);
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const auto leftIdx = ptToIdx(leftPt, m_img.columns);
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const auto rightIdx = ptToIdx(rightPt, m_img.columns);
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const auto topIdx = ptToIdx(topPt, m_img.columns);
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const auto bottomIdx = ptToIdx(bottomPt, m_img.columns);
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const auto tile = tileIdx(pt);
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// mark pixels to update
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pixels[idx % PixelsPerTile] = true;
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if (!pixels[leftIdx % PixelsPerTile] && tile == tileIdx(leftPt) && m_img.pixels[leftIdx] == oldColor) {
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getFillPixels(pixels, leftPt, oldColor);
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}
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if (!pixels[rightIdx % PixelsPerTile] && tile == tileIdx(rightPt) && m_img.pixels[rightIdx] == oldColor) {
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getFillPixels(pixels, rightPt, oldColor);
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}
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if (!pixels[topIdx % PixelsPerTile] && tile == tileIdx(topPt) && m_img.pixels[topIdx] == oldColor) {
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getFillPixels(pixels, topPt, oldColor);
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}
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if (!pixels[bottomIdx % PixelsPerTile] && tile == tileIdx(bottomPt) && m_img.pixels[bottomIdx] == oldColor) {
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getFillPixels(pixels, bottomPt, oldColor);
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}
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}
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}
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