78 lines
3.0 KiB
C++
78 lines
3.0 KiB
C++
#pragma once
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#include "StarBiMap.hpp"
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#include "StarAStar.hpp"
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#include "StarWorld.hpp"
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#include "StarActorMovementController.hpp"
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#include "StarPlatformerAStarTypes.hpp"
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namespace Star {
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namespace PlatformerAStar {
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STAR_CLASS(PathFinder);
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class PathFinder {
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public:
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PathFinder(World* world,
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Vec2F searchFrom,
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Vec2F searchTo,
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ActorMovementParameters movementParameters,
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Parameters searchParameters = Parameters());
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// Does not preserve current search state.
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PathFinder(PathFinder const& rhs);
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PathFinder& operator=(PathFinder const& rhs);
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Maybe<bool> explore(Maybe<unsigned> maxExploreNodes = {});
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Maybe<Path> const& result() const;
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private:
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enum class BoundBoxKind { Full, Drop, Stand };
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void initAStar();
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float heuristicCost(Vec2F const& fromPosition, Vec2F const& toPosition) const;
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Edge defaultCostEdge(Action action, Node const& source, Node const& target) const;
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void neighbors(Node const& node, List<Edge>& neighbors) const;
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void getDropNeighbors(Node const& node, List<Edge>& neighbors) const; // drop through a platform
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void getWalkingNeighborsInDirection(Node const& node, List<Edge>& neighbors, float direction) const;
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void getWalkingNeighbors(Node const& node, List<Edge>& neighbors) const;
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void getFallingNeighbors(Node const& node, List<Edge>& neighbors) const; // freefall
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void getJumpingNeighbors(Node const& node, List<Edge>& neighbors) const;
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void getArcNeighbors(Node const& node, List<Edge>& neighbors) const;
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void getSwimmingNeighbors(Node const& node, List<Edge>& neighbors) const;
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void getFlyingNeighbors(Node const& node, List<Edge>& neighbors) const;
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void forEachArcVelocity(float yVelocity, function<void(Vec2F)> func) const;
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void forEachArcNeighbor(Node const& node, float yVelocity, function<void(Node, bool)> func) const;
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Vec2F acceleration(Vec2F pos) const;
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Vec2F simulateArcCollision(Vec2F position, Vec2F velocity, float dt, bool& collidedX, bool& collidedY) const;
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void simulateArc(Node const& node, function<void(Node, bool)> func) const;
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bool validPosition(Vec2F pos, BoundBoxKind boundKind = BoundBoxKind::Full) const;
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bool onGround(Vec2F pos, BoundBoxKind boundKind = BoundBoxKind::Full) const; // Includes non-solids: platforms, objects, etc.
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bool onSolidGround(Vec2F pos) const; // Includes only solids
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bool inLiquid(Vec2F pos) const;
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RectF boundBox(Vec2F pos, BoundBoxKind boundKind = BoundBoxKind::Full) const;
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// Returns a rect that covers the tiles below the entity's feet if it was at
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// pos
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RectI groundCollisionRect(Vec2F pos, BoundBoxKind boundKind) const;
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// Returns a rect that covers a 1 tile wide space below the entity's feet at
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// node pos
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Vec2I groundNodePosition(Vec2F pos) const;
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Vec2F roundToNode(Vec2F pos) const;
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float distance(Vec2F a, Vec2F b) const;
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World* m_world;
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Vec2F m_searchFrom;
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Vec2F m_searchTo;
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ActorMovementParameters m_movementParams;
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Parameters m_searchParams;
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Maybe<AStar::Search<Edge, Node>> m_astar;
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};
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}
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}
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