82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
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#include "StarFallingBlocksAgent.hpp"
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#include "StarRoot.hpp"
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#include "StarAssets.hpp"
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namespace Star {
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FallingBlocksAgent::FallingBlocksAgent(FallingBlocksFacadePtr worldFacade)
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: m_facade(move(worldFacade)) {
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m_immediateUpwardPropagateProbability = Root::singleton().assets()->json("/worldserver.config:fallingBlocksImmediateUpwardPropogateProbability").toFloat();
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}
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void FallingBlocksAgent::update() {
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HashSet<Vec2I> processing = take(m_pending);
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while (!processing.empty()) {
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List<Vec2I> positions;
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for (auto const& pos : take(processing))
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positions.append(pos);
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m_random.shuffle(positions);
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positions.sort([](auto const& a, auto const& b) {
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return a[1] < b[1];
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});
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for (auto const& pos : positions) {
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Vec2I belowPos = pos + Vec2I(0, -1);
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Vec2I belowLeftPos = pos + Vec2I(-1, -1);
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Vec2I belowRightPos = pos + Vec2I(1, -1);
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FallingBlockType thisBlock = m_facade->blockType(pos);
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FallingBlockType belowBlock = m_facade->blockType(belowPos);
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Maybe<Vec2I> moveTo;
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if (thisBlock == FallingBlockType::Falling) {
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if (belowBlock == FallingBlockType::Open)
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moveTo = belowPos;
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} else if (thisBlock == FallingBlockType::Cascading) {
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if (belowBlock == FallingBlockType::Open) {
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moveTo = belowPos;
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} else {
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FallingBlockType belowLeftBlock = m_facade->blockType(belowLeftPos);
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FallingBlockType belowRightBlock = m_facade->blockType(belowRightPos);
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if (belowLeftBlock == FallingBlockType::Open && belowRightBlock == FallingBlockType::Open)
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moveTo = m_random.randb() ? belowLeftPos : belowRightPos;
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else if (belowLeftBlock == FallingBlockType::Open)
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moveTo = belowLeftPos;
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else if (belowRightBlock == FallingBlockType::Open)
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moveTo = belowRightPos;
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}
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}
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if (moveTo) {
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m_facade->moveBlock(pos, *moveTo);
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if (m_random.randf() < m_immediateUpwardPropagateProbability) {
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processing.add(pos + Vec2I(0, 1));
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processing.add(pos + Vec2I(-1, 1));
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processing.add(pos + Vec2I(1, 1));
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}
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visitLocation(pos);
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visitLocation(*moveTo);
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}
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}
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}
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}
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void FallingBlocksAgent::visitLocation(Vec2I const& location) {
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visitRegion(RectI::withSize(location, Vec2I(1, 1)));
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}
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void FallingBlocksAgent::visitRegion(RectI const& region) {
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for (int x = region.xMin() - 1; x <= region.xMax(); ++x) {
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for (int y = region.yMin(); y <= region.yMax(); ++y)
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m_pending.add({x, y});
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}
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}
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}
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