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Initial WIP of adventure map rendering rewrite
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Ivan Savenko
297
client/adventureMap/MapView.cpp
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297
client/adventureMap/MapView.cpp
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/*
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* MapView.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "MapView.h"
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#include "MapRenderer.h"
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#include "mapHandler.h"
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#include "../CGameInfo.h"
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#include "../CMusicHandler.h"
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#include "../CPlayerInterface.h"
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#include "../gui/CGuiHandler.h"
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#include "../render/CAnimation.h"
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#include "../render/CFadeAnimation.h"
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#include "../render/Canvas.h"
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#include "../render/Colors.h"
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#include "../render/Graphics.h"
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#include "../render/IImage.h"
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#include "../renderSDL/SDL_Extensions.h"
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#include "../../CCallback.h"
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#include "../../lib/CConfigHandler.h"
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#include "../../lib/CGeneralTextHandler.h"
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#include "../../lib/CRandomGenerator.h"
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#include "../../lib/CStopWatch.h"
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#include "../../lib/Color.h"
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#include "../../lib/RiverHandler.h"
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#include "../../lib/RoadHandler.h"
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#include "../../lib/TerrainHandler.h"
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#include "../../lib/mapObjects/CGHeroInstance.h"
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#include "../../lib/mapObjects/CObjectClassesHandler.h"
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#include "../../lib/mapping/CMap.h"
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MapCache::~MapCache() = default;
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MapCache::MapCache(const Point & tileSize, const Point & dimensions)
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: tileSize(tileSize)
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, context(new MapRendererContext())
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, mapRenderer(new MapRenderer(*context))
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, targetDimensionsPixels(dimensions)
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, viewCenter(0, 0)
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, mapLevel(0)
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{
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// total number of potentially visible tiles is:
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// 1) number of completely visible tiles
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// 2) additional tile that might be partially visible from left/top size
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// 3) additional tile that might be partially visible from right/bottom size
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Point visibleTiles{
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dimensions.x / tileSize.x + 2,
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dimensions.y / tileSize.y + 2,
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};
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viewDimensionsTiles = visibleTiles;
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viewDimensionsPixels = visibleTiles * tileSize;
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terrain = std::make_unique<Canvas>(viewDimensionsPixels);
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}
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void MapCache::setViewCenter(const Point & center, int newLevel)
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{
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viewCenter = center;
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mapLevel = newLevel;
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int3 mapSize = LOCPLINT->cb->getMapSize();
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Point viewMax = Point(mapSize) * tileSize;
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vstd::abetween(viewCenter.x, 0, viewMax.x);
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vstd::abetween(viewCenter.y, 0, viewMax.y);
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}
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Canvas MapCache::getTile(const int3 & coordinates)
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{
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assert(mapLevel == coordinates.z);
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assert(viewDimensionsTiles.x + coordinates.x >= 0);
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assert(viewDimensionsTiles.y + coordinates.y >= 0);
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Point tileIndex{
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(viewDimensionsTiles.x + coordinates.x) % viewDimensionsTiles.x,
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(viewDimensionsTiles.y + coordinates.y) % viewDimensionsTiles.y
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};
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Rect terrainSection(tileIndex * tileSize, tileSize);
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return Canvas(*terrain, terrainSection);
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}
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void MapCache::updateTile(const int3 & coordinates)
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{
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Canvas target = getTile(coordinates);
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mapRenderer->renderTile(*context, target, coordinates);
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}
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Rect MapCache::getVisibleAreaTiles() const
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{
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Rect visibleAreaPixels = {
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viewCenter.x - targetDimensionsPixels.x / 2,
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viewCenter.y - targetDimensionsPixels.y / 2,
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targetDimensionsPixels.x,
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targetDimensionsPixels.y
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};
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// NOTE: use division via double in order to use floor (which rounds to negative infinity and not towards zero)
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Point topLeftTile{
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static_cast<int>(std::floor(static_cast<double>(visibleAreaPixels.left()) / tileSize.x)),
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static_cast<int>(std::floor(static_cast<double>(visibleAreaPixels.top()) / tileSize.y)),
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};
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Point bottomRightTile{
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visibleAreaPixels.right() / tileSize.x,
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visibleAreaPixels.bottom() / tileSize.y
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};
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return Rect(topLeftTile, bottomRightTile - topLeftTile + Point(1, 1));
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}
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int3 MapCache::getTileAtPoint(const Point & position) const
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{
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Point topLeftOffset = viewCenter - targetDimensionsPixels / 2;
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Point absolutePosition = position + topLeftOffset;
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return {
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static_cast<int>(std::floor(static_cast<double>(absolutePosition.x) / tileSize.x)),
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static_cast<int>(std::floor(static_cast<double>(absolutePosition.y) / tileSize.y)),
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mapLevel
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};
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}
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int3 MapCache::getTileCenter() const
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{
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return getTileAtPoint(getViewCenter());
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}
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Point MapCache::getViewCenter() const
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{
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return viewCenter;
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}
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void MapCache::update(uint32_t timeDelta)
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{
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context->advanceAnimations(timeDelta);
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Rect dimensions = getVisibleAreaTiles();
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for(int y = dimensions.top(); y < dimensions.bottom(); ++y)
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for(int x = dimensions.left(); x < dimensions.right(); ++x)
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updateTile({x, y, mapLevel});
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}
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void MapCache::render(Canvas & target)
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{
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update(GH.mainFPSmng->getElapsedMilliseconds());
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Rect dimensions = getVisibleAreaTiles();
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for(int y = dimensions.top(); y < dimensions.bottom(); ++y)
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{
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for(int x = dimensions.left(); x < dimensions.right(); ++x)
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{
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Point topLeftOffset = viewCenter - targetDimensionsPixels / 2;
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Point tilePosAbsolute = Point(x, y) * tileSize;
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Point tilePosRelative = tilePosAbsolute - topLeftOffset;
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Canvas source = getTile(int3(x, y, mapLevel));
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target.draw(source, tilePosRelative);
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}
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}
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}
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MapView::MapView(const Point & offset, const Point & dimensions)
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: tilesCache(new MapCache(Point(32, 32), dimensions))
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, tileSize(Point(32, 32))
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{
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pos += offset;
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pos.w = dimensions.x;
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pos.h = dimensions.y;
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}
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Rect MapView::getVisibleAreaTiles() const
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{
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return tilesCache->getVisibleAreaTiles();
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}
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int3 MapView::getTileCenter() const
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{
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return tilesCache->getTileCenter();
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}
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int3 MapView::getTileAtPoint(const Point & position) const
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{
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return tilesCache->getTileAtPoint(position);
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}
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Point MapView::getViewCenter() const
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{
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return tilesCache->getViewCenter();
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}
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void MapView::setViewCenter(const int3 & position)
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{
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setViewCenter(Point(position.x, position.y) * tileSize, position.z);
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}
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void MapView::setViewCenter(const Point & position, int level)
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{
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tilesCache->setViewCenter(position, level);
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}
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void MapView::show(SDL_Surface * to)
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{
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Canvas target(to);
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Canvas targetClipped(target, pos);
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CSDL_Ext::CClipRectGuard guard(to, pos);
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tilesCache->render(targetClipped);
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}
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void MapView::showAll(SDL_Surface * to)
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{
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show(to);
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}
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void MapRendererContext::advanceAnimations(uint32_t ms)
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{
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animationTime += ms;
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}
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int3 MapRendererContext::getMapSize() const
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{
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return LOCPLINT->cb->getMapSize();
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}
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bool MapRendererContext::isInMap(const int3 & coordinates) const
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{
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return LOCPLINT->cb->isInTheMap(coordinates);
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}
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const TerrainTile & MapRendererContext::getMapTile(const int3 & coordinates) const
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{
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return CGI->mh->map->getTile(coordinates);
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}
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MapRendererContext::ObjectsVector MapRendererContext::getAllObjects() const
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{
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return CGI->mh->map->objects;
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}
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const CGObjectInstance * MapRendererContext::getObject(ObjectInstanceID objectID) const
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{
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return CGI->mh->map->objects.at(objectID.getNum());
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}
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bool MapRendererContext::isVisible(const int3 & coordinates) const
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{
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return LOCPLINT->cb->isVisible(coordinates) || settings["session"]["spectate"].Bool();
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}
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MapRendererContext::VisibilityMap MapRendererContext::getVisibilityMap() const
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{
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return LOCPLINT->cb->getVisibilityMap();
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}
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uint32_t MapRendererContext::getAnimationPeriod() const
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{
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// H3 timing for adventure map objects animation is 180 ms
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// Terrain animations also use identical interval, however it is only present in HotA and/or HD Mod
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// TODO: duration of fade-in/fade-out for teleport, entering/leaving boat, removal of objects
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// TOOD: duration of hero movement animation, frame timing of hero movement animation, effect of hero speed option
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// TOOD: duration of enemy hero movement animation, frame timing of enemy hero movement animation, effect of enemy hero speed option
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return 180;
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}
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uint32_t MapRendererContext::getAnimationTime() const
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{
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return animationTime;
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}
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Point MapRendererContext::tileSize() const
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{
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return Point(32, 32);
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}
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bool MapRendererContext::showGrid() const
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{
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return true; // settings["session"]["showGrid"].Bool();
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}
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