Add smart path painting
This commit is contained in:
Marcus Huderle
parent
940fb1b65c
commit
e485f23004
4 changed files with 137 additions and 23 deletions
150
editor.cpp
150
editor.cpp
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@ -296,16 +296,25 @@ void MetatilesPixmapItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
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int y = ((int)pos.y()) / 16;
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map->paint_metatile_initial_x = x;
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map->paint_metatile_initial_y = y;
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updateSelection(event->pos());
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updateSelection(event->pos(), event->button());
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}
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void MetatilesPixmapItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
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updateCurHoveredMetatile(event->pos());
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updateSelection(event->pos());
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Qt::MouseButton button = event->button();
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if (button == Qt::MouseButton::NoButton) {
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Qt::MouseButtons heldButtons = event->buttons();
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if (heldButtons & Qt::RightButton) {
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button = Qt::RightButton;
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} else if (heldButtons & Qt::LeftButton) {
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button = Qt::LeftButton;
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}
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}
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updateSelection(event->pos(), button);
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}
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void MetatilesPixmapItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
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updateSelection(event->pos());
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updateSelection(event->pos(), event->button());
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}
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void MetatilesPixmapItem::updateSelection(QPointF pos) {
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void MetatilesPixmapItem::updateSelection(QPointF pos, Qt::MouseButton button) {
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int x = ((int)pos.x()) / 16;
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int y = ((int)pos.y()) / 16;
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int width = pixmap().width() / 16;
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@ -316,6 +325,9 @@ void MetatilesPixmapItem::updateSelection(QPointF pos) {
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map->paint_tile = baseTileY * 8 + baseTileX;
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map->paint_tile_width = abs(map->paint_metatile_initial_x - x) + 1;
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map->paint_tile_height = abs(map->paint_metatile_initial_y - y) + 1;
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map->smart_paths_enabled = button == Qt::RightButton
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&& map->paint_tile_width == 3
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&& map->paint_tile_height == 3;
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emit map->paintTileChanged(map);
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}
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}
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@ -351,25 +363,13 @@ void MapPixmapItem::paint(QGraphicsSceneMouseEvent *event) {
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QPointF pos = event->pos();
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int x = (int)(pos.x()) / 16;
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int y = (int)(pos.y()) / 16;
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// Snap the selected position to the top-left of the block boundary.
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// This allows painting via dragging the mouse to tile the painted region.
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int xDiff = x - map->paint_tile_initial_x;
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int yDiff = y - map->paint_tile_initial_y;
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if (xDiff < 0 && xDiff % map->paint_tile_width != 0) xDiff -= map->paint_tile_width;
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if (yDiff < 0 && yDiff % map->paint_tile_height != 0) yDiff -= map->paint_tile_height;
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x = map->paint_tile_initial_x + (xDiff / map->paint_tile_width) * map->paint_tile_width;
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y = map->paint_tile_initial_y + (yDiff / map->paint_tile_height) * map->paint_tile_height;
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for (int i = 0; i < map->paint_tile_width && i + x < map->getWidth(); i++)
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for (int j = 0; j < map->paint_tile_height && j + y < map->getHeight(); j++) {
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int actualX = i + x;
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int actualY = j + y;
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Block *block = map->getBlock(actualX, actualY);
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if (block) {
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block->tile = map->paint_tile + i + (j * 8);
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map->_setBlock(actualX, actualY, *block);
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}
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if (map->smart_paths_enabled) {
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paintSmartPath(x, y);
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} else {
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paintNormal(x, y);
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}
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if (event->type() == QEvent::GraphicsSceneMouseRelease) {
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map->commit();
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}
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@ -377,6 +377,114 @@ void MapPixmapItem::paint(QGraphicsSceneMouseEvent *event) {
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}
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}
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void MapPixmapItem::paintNormal(int x, int y) {
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// Snap the selected position to the top-left of the block boundary.
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// This allows painting via dragging the mouse to tile the painted region.
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int xDiff = x - map->paint_tile_initial_x;
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int yDiff = y - map->paint_tile_initial_y;
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if (xDiff < 0 && xDiff % map->paint_tile_width != 0) xDiff -= map->paint_tile_width;
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if (yDiff < 0 && yDiff % map->paint_tile_height != 0) yDiff -= map->paint_tile_height;
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x = map->paint_tile_initial_x + (xDiff / map->paint_tile_width) * map->paint_tile_width;
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y = map->paint_tile_initial_y + (yDiff / map->paint_tile_height) * map->paint_tile_height;
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for (int i = 0; i < map->paint_tile_width && i + x < map->getWidth(); i++)
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for (int j = 0; j < map->paint_tile_height && j + y < map->getHeight(); j++) {
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int actualX = i + x;
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int actualY = j + y;
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Block *block = map->getBlock(actualX, actualY);
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if (block) {
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block->tile = map->paint_tile + i + (j * 8);
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map->_setBlock(actualX, actualY, *block);
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}
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}
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}
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// These are tile offsets from the top-left tile in the 3x3 smart path selection.
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// Each entry is for one possibility from the marching squares value for a tile.
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// (Marching Squares: https://en.wikipedia.org/wiki/Marching_squares)
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QList<int> MapPixmapItem::smartPathTable = QList<int>({
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8 + 1, // 0000
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8 + 1, // 0001
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8 + 1, // 0010
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16 + 0, // 0011
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8 + 1, // 0100
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8 + 1, // 0101
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0 + 0, // 0110
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8 + 0, // 0111
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8 + 1, // 1000
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16 + 2, // 1001
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8 + 1, // 1010
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16 + 1, // 1011
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0 + 2, // 1100
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8 + 2, // 1101
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0 + 1, // 1110
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8 + 1, // 1111
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});
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#define IS_SMART_PATH_TILE(block) ((block->tile >= map->paint_tile && block->tile < map->paint_tile + 3) \
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|| (block->tile >= map->paint_tile + 8 && block->tile < map->paint_tile + 11) \
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|| (block->tile >= map->paint_tile + 16 && block->tile < map->paint_tile + 19))
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void MapPixmapItem::paintSmartPath(int x, int y) {
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// Smart path should never be enabled without a 3x3 block selection.
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if (map->paint_tile_width != 3 || map->paint_tile_height != 3) return;
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// Shift to the middle tile of the smart path selection.
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int openTile = map->paint_tile + 8 + 1;
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// Fill the region with the open tile.
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for (int i = -1; i <= 1 && i + x < map->getWidth() && i + x >= 0; i++)
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for (int j = -1; j <= 1 && j + y < map->getHeight() && j + y >= 0; j++) {
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int actualX = i + x;
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int actualY = j + y;
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Block *block = map->getBlock(actualX, actualY);
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if (block) {
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block->tile = openTile;
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map->_setBlock(actualX, actualY, *block);
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}
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}
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// Go back and resolve the edge tiles
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for (int i = -2; i <= 2 && i + x < map->getWidth() && i + x >= 0; i++)
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for (int j = -2; j <= 2 && j + y < map->getHeight() && j + y >= 0; j++) {
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// Ignore the corners, which can't possible be affected by the smart path.
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if ((i == -2 && j == -2) || (i == 2 && j == -2) ||
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(i == -2 && j == 2) || (i == 2 && j == 2))
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continue;
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// Ignore tiles that aren't part of the smart path set.
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int actualX = i + x;
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int actualY = j + y;
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Block *block = map->getBlock(actualX, actualY);
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if (!block || !IS_SMART_PATH_TILE(block)) {
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continue;
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}
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int id = 0;
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Block *top = map->getBlock(actualX, actualY - 1);
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Block *right = map->getBlock(actualX + 1, actualY);
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Block *bottom = map->getBlock(actualX, actualY + 1);
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Block *left = map->getBlock(actualX - 1, actualY);
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// Get marching squares value, to determine which tile to use.
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if (top && IS_SMART_PATH_TILE(top))
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id += 1;
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if (right && IS_SMART_PATH_TILE(right))
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id += 2;
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if (bottom && IS_SMART_PATH_TILE(bottom))
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id += 4;
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if (left && IS_SMART_PATH_TILE(left))
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id += 8;
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if (block) {
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qDebug() << "tile: " << block->tile << "base: " << map->paint_tile << "id: " << id;
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}
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block->tile = map->paint_tile + smartPathTable[id];;
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map->_setBlock(actualX, actualY, *block);
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}
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}
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void MapPixmapItem::floodFill(QGraphicsSceneMouseEvent *event) {
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if (map) {
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QPointF pos = event->pos();
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5
editor.h
5
editor.h
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@ -204,6 +204,9 @@ public:
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private:
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void updateCurHoveredTile(QPointF pos);
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void paintNormal(int x, int y);
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void paintSmartPath(int x, int y);
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static QList<int> smartPathTable;
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signals:
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void mouseEvent(QGraphicsSceneMouseEvent *, MapPixmapItem *);
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@ -250,7 +253,7 @@ public:
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Map* map = NULL;
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virtual void draw();
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private:
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void updateSelection(QPointF pos);
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void updateSelection(QPointF pos, Qt::MouseButton button);
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protected:
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virtual void updateCurHoveredMetatile(QPointF pos);
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private slots:
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4
map.cpp
4
map.cpp
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@ -453,7 +453,9 @@ void Map::drawSelection(int i, int w, QPainter *painter) {
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int x = i % w;
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int y = i / w;
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painter->save();
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painter->setPen(QColor(0xff, 0xff, 0xff));
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QColor penColor = smart_paths_enabled ? QColor(0xff, 0x0, 0xff) : QColor(0xff, 0xff, 0xff);
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painter->setPen(penColor);
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int rectWidth = paint_tile_width * 16;
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int rectHeight = paint_tile_height * 16;
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painter->drawRect(x * 16, y * 16, rectWidth - 1, rectHeight -1);
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1
map.h
1
map.h
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@ -138,6 +138,7 @@ public:
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QImage image;
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QPixmap pixmap;
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QList<QImage> metatile_images;
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bool smart_paths_enabled = false;
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int paint_metatile_initial_x;
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int paint_metatile_initial_y;
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int paint_tile;
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