553 lines
12 KiB
C++
553 lines
12 KiB
C++
#include "Globals.h"
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#include "BiomeView.h"
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#include <QPainter>
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#include <QResizeEvent>
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#include "Region.h"
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static const int DELTA_STEP = 120; // The normal per-notch wheel delta
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/** Map for converting biome values to colors. Initialized from biomeColors[]. */
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static uchar biomeToColor[256 * 4];
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/** Map for converting biome values to colors. Used to initialize biomeToColor[]. */
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static struct
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{
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EMCSBiome m_Biome;
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uchar m_Color[3];
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} biomeColors[] =
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{
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{ biOcean, { 0x00, 0x00, 0x70 }, },
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{ biPlains, { 0x8d, 0xb3, 0x60 }, },
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{ biDesert, { 0xfa, 0x94, 0x18 }, },
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{ biExtremeHills, { 0x60, 0x60, 0x60 }, },
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{ biForest, { 0x05, 0x66, 0x21 }, },
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{ biTaiga, { 0x0b, 0x66, 0x59 }, },
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{ biSwampland, { 0x2f, 0xff, 0xda }, },
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{ biRiver, { 0x30, 0x30, 0xaf }, },
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{ biHell, { 0x7f, 0x00, 0x00 }, },
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{ biSky, { 0x00, 0x7f, 0xff }, },
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{ biFrozenOcean, { 0xa0, 0xa0, 0xdf }, },
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{ biFrozenRiver, { 0xa0, 0xa0, 0xff }, },
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{ biIcePlains, { 0xff, 0xff, 0xff }, },
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{ biIceMountains, { 0xa0, 0xa0, 0xa0 }, },
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{ biMushroomIsland, { 0xff, 0x00, 0xff }, },
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{ biMushroomShore, { 0xa0, 0x00, 0xff }, },
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{ biBeach, { 0xfa, 0xde, 0x55 }, },
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{ biDesertHills, { 0xd2, 0x5f, 0x12 }, },
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{ biForestHills, { 0x22, 0x55, 0x1c }, },
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{ biTaigaHills, { 0x16, 0x39, 0x33 }, },
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{ biExtremeHillsEdge, { 0x7f, 0x8f, 0x7f }, },
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{ biJungle, { 0x53, 0x7b, 0x09 }, },
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{ biJungleHills, { 0x2c, 0x42, 0x05 }, },
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{ biJungleEdge, { 0x62, 0x8b, 0x17 }, },
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{ biDeepOcean, { 0x00, 0x00, 0x30 }, },
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{ biStoneBeach, { 0xa2, 0xa2, 0x84 }, },
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{ biColdBeach, { 0xfa, 0xf0, 0xc0 }, },
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{ biBirchForest, { 0x30, 0x74, 0x44 }, },
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{ biBirchForestHills, { 0x1f, 0x5f, 0x32 }, },
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{ biRoofedForest, { 0x40, 0x51, 0x1a }, },
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{ biColdTaiga, { 0x31, 0x55, 0x4a }, },
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{ biColdTaigaHills, { 0x59, 0x7d, 0x72 }, },
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{ biMegaTaiga, { 0x59, 0x66, 0x51 }, },
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{ biMegaTaigaHills, { 0x59, 0x66, 0x59 }, },
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{ biExtremeHillsPlus, { 0x50, 0x70, 0x50 }, },
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{ biSavanna, { 0xbd, 0xb2, 0x5f }, },
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{ biSavannaPlateau, { 0xa7, 0x9d, 0x64 }, },
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{ biMesa, { 0xd9, 0x45, 0x15 }, },
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{ biMesaPlateauF, { 0xb0, 0x97, 0x65 }, },
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{ biMesaPlateau, { 0xca, 0x8c, 0x65 }, },
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// M variants:
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{ biSunflowerPlains, { 0xb5, 0xdb, 0x88 }, },
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{ biDesertM, { 0xff, 0xbc, 0x40 }, },
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{ biExtremeHillsM, { 0x88, 0x88, 0x88 }, },
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{ biFlowerForest, { 0x2d, 0x8e, 0x49 }, },
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{ biTaigaM, { 0x33, 0x8e, 0x81 }, },
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{ biSwamplandM, { 0x07, 0xf9, 0xb2 }, },
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{ biIcePlainsSpikes, { 0xb4, 0xdc, 0xdc }, },
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{ biJungleM, { 0x7b, 0xa3, 0x31 }, },
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{ biJungleEdgeM, { 0x62, 0x8b, 0x17 }, },
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{ biBirchForestM, { 0x58, 0x9c, 0x6c }, },
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{ biBirchForestHillsM, { 0x47, 0x87, 0x5a }, },
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{ biRoofedForestM, { 0x68, 0x79, 0x42 }, },
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{ biColdTaigaM, { 0x24, 0x3f, 0x36 }, },
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{ biMegaSpruceTaiga, { 0x45, 0x4f, 0x3e }, },
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{ biMegaSpruceTaigaHills, { 0x45, 0x4f, 0x4e }, },
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{ biExtremeHillsPlusM, { 0x78, 0x98, 0x78 }, },
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{ biSavannaM, { 0xe5, 0xda, 0x87 }, },
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{ biSavannaPlateauM, { 0xa7, 0x9d, 0x74 }, },
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{ biMesaBryce, { 0xff, 0x6d, 0x3d }, },
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{ biMesaPlateauFM, { 0xd8, 0xbf, 0x8d }, },
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{ biMesaPlateauM, { 0xf2, 0xb4, 0x8d }, },
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} ;
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static class BiomeColorsInitializer
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{
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public:
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BiomeColorsInitializer(void)
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{
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// Reset all colors to gray:
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for (size_t i = 0; i < ARRAYCOUNT(biomeToColor); i++)
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{
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biomeToColor[i] = 0x7f;
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}
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// Set known biomes to their colors:
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for (size_t i = 0; i < ARRAYCOUNT(biomeColors); i++)
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{
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uchar * color = &biomeToColor[4 * biomeColors[i].m_Biome];
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color[0] = biomeColors[i].m_Color[2];
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color[1] = biomeColors[i].m_Color[1];
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color[2] = biomeColors[i].m_Color[0];
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color[3] = 0xff;
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}
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}
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} biomeColorInitializer;
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////////////////////////////////////////////////////////////////////////////////
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// BiomeView:
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BiomeView::BiomeView(QWidget * parent) :
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super(parent),
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m_X(0),
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m_Z(0),
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m_Zoom(1),
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m_IsMouseDragging(false),
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m_MouseWheelDelta(0)
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{
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// Create the image used for undefined chunks:
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int offset = 0;
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for (int y = 0; y < 16; y++)
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{
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for (int x = 0; x < 16; x++)
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{
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uchar color = (((x & 8) ^ (y & 8)) == 0) ? 0x44 : 0x88;
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m_EmptyChunkImage[offset++] = color;
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m_EmptyChunkImage[offset++] = color;
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m_EmptyChunkImage[offset++] = color;
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m_EmptyChunkImage[offset++] = 0xff;
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}
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}
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// Create the startup image:
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redraw();
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// Add a chunk-update callback mechanism:
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connect(&m_Cache, SIGNAL(regionAvailable(int, int)), this, SLOT(regionAvailable(int, int)));
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// Allow mouse and keyboard interaction:
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setFocusPolicy(Qt::StrongFocus);
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setMouseTracking(true);
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}
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QSize BiomeView::minimumSizeHint() const
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{
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return QSize(300, 300);
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}
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QSize BiomeView::sizeHint() const
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{
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return QSize(800, 600);
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}
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void BiomeView::setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource)
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{
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// Replace the source in the cache:
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m_Cache.setChunkSource(a_ChunkSource);
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// Redraw with the new source:
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redraw();
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}
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void BiomeView::setPosition(int a_BlockX, int a_BlockZ)
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{
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m_X = a_BlockX;
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m_Z = a_BlockZ;
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redraw();
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}
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void BiomeView::setZoomLevel(double a_ZoomLevel)
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{
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m_Zoom = a_ZoomLevel;
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redraw();
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}
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void BiomeView::redraw()
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{
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if (!hasData())
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{
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// No data means no image is displayed, no need to compose:
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update();
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return;
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}
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int chunksize = 16 * m_Zoom;
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// first find the center block position
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int centerchunkx = floor(m_X / 16);
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int centerchunkz = floor(m_Z / 16);
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// and the center of the screen
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int centerx = m_Image.width() / 2;
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int centery = m_Image.height() / 2;
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// and align for panning
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centerx -= (m_X - centerchunkx * 16) * m_Zoom;
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centery -= (m_Z - centerchunkz * 16) * m_Zoom;
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// now calculate the topleft block on the screen
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int startx = centerchunkx - centerx / chunksize - 1;
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int startz = centerchunkz - centery / chunksize - 1;
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// and the dimensions of the screen in blocks
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int blockswide = m_Image.width() / chunksize + 3;
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int blockstall = m_Image.height() / chunksize + 3;
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for (int z = startz; z < startz + blockstall; z++)
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{
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for (int x = startx; x < startx + blockswide; x++)
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{
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drawChunk(x, z);
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}
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}
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update();
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}
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void BiomeView::regionAvailable(int a_RegionX, int a_RegionZ)
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{
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for (int z = 0; z < 32; z++)
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{
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for (int x = 0; x < 32; x++)
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{
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drawChunk(a_RegionX * 32 + x, a_RegionZ * 32 + z);
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}
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}
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update();
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}
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void BiomeView::reload()
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{
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if (!hasData())
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{
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return;
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}
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m_Cache.reload();
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redraw();
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}
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void BiomeView::drawChunk(int a_ChunkX, int a_ChunkZ)
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{
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if (!hasData())
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{
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return;
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}
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// Fetch the region:
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int regionX;
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int regionZ;
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Region::chunkToRegion(a_ChunkX, a_ChunkZ, regionX, regionZ);
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RegionPtr region = m_Cache.fetch(regionX, regionZ);
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// Figure out where on the screen this chunk should be drawn:
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// first find the center chunk
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int centerchunkx = floor(m_X / 16);
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int centerchunkz = floor(m_Z / 16);
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// and the center chunk screen coordinates
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int centerx = m_Image.width() / 2;
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int centery = m_Image.height() / 2;
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// which need to be shifted to account for panning inside that chunk
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centerx -= (m_X - centerchunkx * 16) * m_Zoom;
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centery -= (m_Z - centerchunkz * 16) * m_Zoom;
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// centerx, centery now points to the top left corner of the center chunk
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// so now calculate our x, y in relation
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double chunksize = 16 * m_Zoom;
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centerx += (a_ChunkX - centerchunkx) * chunksize;
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centery += (a_ChunkZ - centerchunkz) * chunksize;
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uchar * bits = m_Image.bits();
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int imgstride = m_Image.bytesPerLine();
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int skipx = 0, skipy = 0;
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int blockwidth = chunksize, blockheight = chunksize;
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// now if we're off the screen we need to crop
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if (centerx < 0)
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{
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skipx = -centerx;
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centerx = 0;
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}
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if (centery < 0)
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{
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skipy = -centery;
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centery = 0;
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}
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// or the other side, we need to trim
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if (centerx + blockwidth > m_Image.width())
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{
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blockwidth = m_Image.width() - centerx;
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}
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if (centery + blockheight > m_Image.height())
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{
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blockheight = m_Image.height() - centery;
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}
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if ((blockwidth <= 0) || (skipx >= blockwidth))
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{
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return;
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}
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int imgoffset = centerx * 4 + centery * imgstride;
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// If the chunk is valid, use its data; otherwise use the empty placeholder:
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const short * src = m_EmptyChunkBiomes;
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if (region.get() != nullptr)
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{
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int relChunkX = a_ChunkX - regionX * 32;
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int relChunkZ = a_ChunkZ - regionZ * 32;
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Chunk & chunk = region->getRelChunk(relChunkX, relChunkZ);
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if (chunk.isValid())
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{
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src = chunk.getBiomes();
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}
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}
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// Scale-blit the image:
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for (int z = skipy; z < blockheight; z++, imgoffset += imgstride)
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{
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size_t srcoffset = static_cast<size_t>(std::floor((double)z / m_Zoom)) * 16;
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int imgxoffset = imgoffset;
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for (int x = skipx; x < blockwidth; x++)
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{
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short biome = src[srcoffset + static_cast<size_t>(std::floor((double)x / m_Zoom))];
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const uchar * color;
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if (biome < 0)
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{
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static const uchar emptyBiome1[] = { 0x44, 0x44, 0x44, 0xff };
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static const uchar emptyBiome2[] = { 0x88, 0x88, 0x88, 0xff };
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color = ((x & 8) ^ (z & 8)) ? emptyBiome1 : emptyBiome2;
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}
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else
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{
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if (biome * 4 >= ARRAYCOUNT(biomeToColor))
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{
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static const uchar errorImage[] = { 0xff, 0x00, 0x00, 0xff };
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color = errorImage;
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}
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else
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{
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color = biomeToColor + biome * 4;
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}
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}
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bits[imgxoffset] = color[0];
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bits[imgxoffset + 1] = color[1];
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bits[imgxoffset + 2] = color[2];
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bits[imgxoffset + 3] = color[3];
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imgxoffset += 4;
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} // for x
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} // for z
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}
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void BiomeView::resizeEvent(QResizeEvent * a_Event)
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{
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m_Image = QImage(a_Event->size(), QImage::Format_RGB32);
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redraw();
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}
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void BiomeView::paintEvent(QPaintEvent * a_Event)
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{
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QPainter p(this);
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if (hasData())
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{
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p.drawImage(QPoint(0, 0), m_Image);
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}
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else
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{
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p.drawText(a_Event->rect(), Qt::AlignCenter, "No chunk source selected");
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}
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p.end();
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}
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void BiomeView::mousePressEvent(QMouseEvent * a_Event)
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{
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m_LastX = a_Event->x();
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m_LastY = a_Event->y();
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m_IsMouseDragging = true;
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}
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void BiomeView::mouseMoveEvent(QMouseEvent * a_Event)
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{
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// If there's no data displayed, bail out:
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if (!hasData())
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{
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return;
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}
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if (m_IsMouseDragging)
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{
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// The user is dragging the mouse, move the view around:
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m_X += (m_LastX - a_Event->x()) / m_Zoom;
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m_Z += (m_LastY - a_Event->y()) / m_Zoom;
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m_LastX = a_Event->x();
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m_LastY = a_Event->y();
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redraw();
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return;
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}
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// Update the status bar info text:
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int blockX = floor((a_Event->x() - width() / 2) / m_Zoom + m_X);
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int blockZ = floor((a_Event->y() - height() / 2) / m_Zoom + m_Z);
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int regionX, regionZ;
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Region::blockToRegion(blockX, blockZ, regionX, regionZ);
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int relX = blockX - regionX * 512;
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int relZ = blockZ - regionZ * 512;
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auto region = m_Cache.fetch(regionX, regionZ);
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int biome = (region.get() != nullptr) ? region->getRelBiome(relX, relZ) : biInvalidBiome;
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emit hoverChanged(blockX, blockZ, biome);
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}
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void BiomeView::mouseReleaseEvent(QMouseEvent *)
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{
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m_IsMouseDragging = false;
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}
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void BiomeView::wheelEvent(QWheelEvent * a_Event)
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{
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m_MouseWheelDelta += a_Event->delta();
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while (m_MouseWheelDelta >= DELTA_STEP)
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{
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emit wheelUp();
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m_MouseWheelDelta -= DELTA_STEP;
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}
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while (m_MouseWheelDelta <= -DELTA_STEP)
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{
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emit wheelDown();
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m_MouseWheelDelta += DELTA_STEP;
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}
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}
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void BiomeView::keyPressEvent(QKeyEvent * a_Event)
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{
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switch (a_Event->key())
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{
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case Qt::Key_Up:
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case Qt::Key_W:
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{
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m_Z -= 10.0 / m_Zoom;
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redraw();
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break;
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}
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case Qt::Key_Down:
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case Qt::Key_S:
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{
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m_Z += 10.0 / m_Zoom;
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redraw();
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break;
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}
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case Qt::Key_Left:
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case Qt::Key_A:
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{
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m_X -= 10.0 / m_Zoom;
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redraw();
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break;
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}
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case Qt::Key_Right:
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case Qt::Key_D:
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{
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m_X += 10.0 / m_Zoom;
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redraw();
|
|
break;
|
|
}
|
|
|
|
case Qt::Key_PageUp:
|
|
case Qt::Key_Q:
|
|
{
|
|
emit increaseZoom();
|
|
break;
|
|
}
|
|
|
|
case Qt::Key_PageDown:
|
|
case Qt::Key_E:
|
|
{
|
|
emit decreaseZoom();
|
|
break;
|
|
}
|
|
}
|
|
}
|