364 lines
12 KiB
C++
364 lines
12 KiB
C++
#ifndef STAR_ACTOR_MOVEMENT_CONTROLLER_HPP
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#define STAR_ACTOR_MOVEMENT_CONTROLLER_HPP
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#include "StarMovementController.hpp"
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#include "StarPlatformerAStarTypes.hpp"
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#include "StarAnchorableEntity.hpp"
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#include "StarGameTimers.hpp"
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namespace Star {
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STAR_EXCEPTION(ActorMovementControllerException, MovementControllerException);
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STAR_CLASS(ActorMovementController);
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STAR_CLASS(PathController);
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struct ActorJumpProfile {
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ActorJumpProfile();
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ActorJumpProfile(Json const& config);
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Json toJson() const;
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ActorJumpProfile merge(ActorJumpProfile const& rhs) const;
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Maybe<float> jumpSpeed;
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Maybe<float> jumpControlForce;
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Maybe<float> jumpInitialPercentage;
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// If this is greater than 0.0, jump hold time is limited by this factor.
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Maybe<float> jumpHoldTime;
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// If this is greater than 0.0, then the total jump time for *all jumps in a
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// multi jump set* is limited by this factor.
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Maybe<float> jumpTotalHoldTime;
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Maybe<bool> multiJump;
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Maybe<float> reJumpDelay;
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Maybe<bool> autoJump;
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Maybe<bool> collisionCancelled;
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};
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DataStream& operator>>(DataStream& ds, ActorJumpProfile& movementParameters);
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DataStream& operator<<(DataStream& ds, ActorJumpProfile const& movementParameters);
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// A not-quite superset of MovementParameters, with some fields from
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// MovementParameters ignored because they make no sense, and other fields
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// expanded out to different cases based on Actor specific things.
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struct ActorMovementParameters {
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// Load sensible defaults from a config file.
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static ActorMovementParameters sensibleDefaults();
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// Construct parameters from config with only those specified in the config
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// set, if any.
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explicit ActorMovementParameters(Json const& config = Json());
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Json toJson() const;
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// Merge the given set of movement parameters on top of this one, with any
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// set parameters in rhs overwriting the ones in this set.
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ActorMovementParameters merge(ActorMovementParameters const& rhs) const;
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Maybe<float> mass;
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Maybe<float> gravityMultiplier;
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Maybe<float> liquidBuoyancy;
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Maybe<float> airBuoyancy;
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Maybe<float> bounceFactor;
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Maybe<bool> stopOnFirstBounce;
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Maybe<bool> enableSurfaceSlopeCorrection;
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Maybe<float> slopeSlidingFactor;
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Maybe<float> maxMovementPerStep;
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Maybe<float> maximumCorrection;
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Maybe<float> speedLimit;
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Maybe<PolyF> standingPoly;
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Maybe<PolyF> crouchingPoly;
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Maybe<bool> stickyCollision;
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Maybe<float> stickyForce;
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Maybe<float> walkSpeed;
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Maybe<float> runSpeed;
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Maybe<float> flySpeed;
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Maybe<float> airFriction;
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Maybe<float> liquidFriction;
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Maybe<float> minimumLiquidPercentage;
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Maybe<float> liquidImpedance;
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Maybe<float> normalGroundFriction;
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Maybe<float> ambulatingGroundFriction;
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Maybe<float> groundForce;
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Maybe<float> airForce;
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Maybe<float> liquidForce;
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ActorJumpProfile airJumpProfile;
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ActorJumpProfile liquidJumpProfile;
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Maybe<float> fallStatusSpeedMin;
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Maybe<int> fallThroughSustainFrames;
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Maybe<float> maximumPlatformCorrection;
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Maybe<float> maximumPlatformCorrectionVelocityFactor;
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Maybe<StringSet> physicsEffectCategories;
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Maybe<float> groundMovementMinimumSustain;
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Maybe<float> groundMovementMaximumSustain;
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Maybe<float> groundMovementCheckDistance;
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Maybe<bool> collisionEnabled;
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Maybe<bool> frictionEnabled;
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Maybe<bool> gravityEnabled;
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Maybe<float> pathExploreRate;
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};
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DataStream& operator>>(DataStream& ds, ActorMovementParameters& movementParameters);
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DataStream& operator<<(DataStream& ds, ActorMovementParameters const& movementParameters);
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// A set of normalized values that act as "modifiers" or "bonuses" to movement,
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// and can be combined sensibly. A modifier of 0.0 represents a 0% change, a
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// modifier of 0.2 represents a 20% increase, and a modifier of -0.2 represents
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// a 20% decrease. Also includes some flags that disable functionality
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// combined with logical OR.
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struct ActorMovementModifiers {
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explicit ActorMovementModifiers(Json const& config = Json());
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Json toJson() const;
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// Combines each modifier value through addition.
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ActorMovementModifiers combine(ActorMovementModifiers const& rhs) const;
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float groundMovementModifier;
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float liquidMovementModifier;
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float speedModifier;
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float airJumpModifier;
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float liquidJumpModifier;
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bool runningSuppressed;
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bool jumpingSuppressed;
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// Suppresses left, right, down, crouch, jump, and fly controls
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bool movementSuppressed;
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bool facingSuppressed;
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};
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DataStream& operator>>(DataStream& ds, ActorMovementModifiers& movementModifiers);
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DataStream& operator<<(DataStream& ds, ActorMovementModifiers const& movementModifiers);
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class ActorMovementController : public MovementController {
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public:
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// Constructs an ActorMovementController with parameters loaded from sensible
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// defaults, and the given parameters (if any) applied on top of them.
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explicit ActorMovementController(ActorMovementParameters const& parameters = ActorMovementParameters());
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// Currently active parameters.
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ActorMovementParameters const& baseParameters() const;
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// Apply any set parameters from the given set on top of the current set.
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void updateBaseParameters(ActorMovementParameters const& parameters);
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// Reset the parameters from the sensible defaults, and apply the given
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// parameters (if any) on top of them.
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void resetBaseParameters(ActorMovementParameters const& parameters = ActorMovementParameters());
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// Currently active modifiers.
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ActorMovementModifiers const& baseModifiers() const;
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// Combine the given modifiers with the already active modifiers.
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void updateBaseModifiers(ActorMovementModifiers const& modifiers);
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// Reset all modifiers to the given values
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void resetBaseModifiers(ActorMovementModifiers const& modifiers = ActorMovementModifiers());
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// Stores and loads position, velocity, rotation, movingDirection,
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// facingDirection, and crouching
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Json storeState() const;
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void loadState(Json const& state);
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// Optionaly anchor this ActorMovementController to the given
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// AnchorableEntity. position, rotation, and facing direction will be set
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// based on the entity anchor alone every tick, and on slaved
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// ActorMovementControllers it will be updated based on the actual slave-side
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// AnchorableEntity state.
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void setAnchorState(EntityAnchorState anchorState);
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void resetAnchorState();
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Maybe<EntityAnchorState> anchorState() const;
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EntityAnchorConstPtr entityAnchor() const;
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// ActorMovementController position and rotation honor the entity anchor, if
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// an anchor is set.
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Vec2F position() const;
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float xPosition() const;
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float yPosition() const;
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float rotation() const;
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PolyF collisionBody() const;
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RectF localBoundBox() const;
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RectF collisionBoundBox() const;
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bool walking() const;
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bool running() const;
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Direction movingDirection() const;
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Direction facingDirection() const;
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bool crouching() const;
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bool flying() const;
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bool falling() const;
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bool canJump() const;
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bool jumping() const;
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// Slightly different than onGround, in that this is sustained for a few
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// extra frames of movement before it becomes false.
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bool groundMovement() const;
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bool liquidMovement() const;
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bool pathfinding() const;
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// Basic direct physics controls that can be called multiple times per
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// update and will be combined.
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void controlRotation(float rotationRate);
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void controlAcceleration(Vec2F const& acceleration);
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void controlForce(Vec2F const& force);
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void controlApproachVelocity(Vec2F const& targetVelocity, float maxControlForce);
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void controlApproachVelocityAlongAngle(float angle, float targetVelocity, float maxControlForce, bool positiveOnly = false);
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void controlApproachXVelocity(float targetXVelocity, float maxControlForce);
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void controlApproachYVelocity(float targetYVelocity, float maxControlForce);
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// Apply ActorMovementParameters / ActorMovementModifiers only as long as
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// the controls are active. Can be called multiple times per update and
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// will be combined.
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void controlParameters(ActorMovementParameters const& parameters);
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void controlModifiers(ActorMovementModifiers const& modifiers);
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// Higher level movement controls that use forces defined in the
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// ActorMovementParameters. Calling more than once per update will override
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// previous calls.
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void controlMove(Direction direction, bool run = true);
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void controlFace(Direction direction);
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void controlDown();
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void controlCrouch();
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void controlJump(bool jumpEvenIfUnable = false);
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void controlFly(Vec2F const& velocity);
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Maybe<pair<Vec2F, bool>> pathMove(Vec2F const& pathPosition, bool run = false, Maybe<PlatformerAStar::Parameters> const& parameters = {});
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Maybe<pair<Vec2F, bool>> controlPathMove(Vec2F const& pathPosition, bool run = false, Maybe<PlatformerAStar::Parameters> const& parameters = {});
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// Clears all control data.
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void clearControls();
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// Integrates the ActorMovementController one WorldTimestep and applies all
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// the control data and clears it for the next step.
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void tickMaster();
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void tickSlave();
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private:
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struct ApproachVelocityCommand {
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Vec2F targetVelocity;
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float maxControlForce;
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};
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struct ApproachVelocityAlongAngleCommand {
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float alongAngle;
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float targetVelocity;
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float maxControlForce;
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bool positiveOnly;
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};
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void applyMCParameters(ActorMovementParameters const& parameters);
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void doSetAnchorState(Maybe<EntityAnchorState> anchorState);
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ActorMovementParameters m_baseParameters;
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ActorMovementModifiers m_baseModifiers;
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// State data
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NetElementBool m_walking;
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NetElementBool m_running;
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NetElementEnum<Direction> m_movingDirection;
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NetElementEnum<Direction> m_facingDirection;
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NetElementBool m_crouching;
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NetElementBool m_flying;
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NetElementBool m_falling;
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NetElementBool m_canJump;
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NetElementBool m_jumping;
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NetElementBool m_groundMovement;
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NetElementBool m_liquidMovement;
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NetElementData<Maybe<EntityAnchorState>> m_anchorState;
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EntityAnchorConstPtr m_entityAnchor;
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// Command data
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float m_controlRotationRate;
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Vec2F m_controlAcceleration;
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Vec2F m_controlForce;
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List<ApproachVelocityCommand> m_controlApproachVelocities;
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List<ApproachVelocityAlongAngleCommand> m_controlApproachVelocityAlongAngles;
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Maybe<Direction> m_controlMove;
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Maybe<Direction> m_controlFace;
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bool m_controlRun;
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bool m_controlCrouch;
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bool m_controlDown;
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bool m_controlJump;
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bool m_controlJumpAnyway;
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Maybe<Vec2F> m_controlFly;
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Maybe<pair<Vec2F, bool>> m_controlPathMove;
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Maybe<pair<Vec2F, bool>> m_pathMoveResult;
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PathControllerPtr m_pathController;
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ActorMovementParameters m_controlParameters;
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ActorMovementModifiers m_controlModifiers;
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// Internal state data
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int m_fallThroughSustain;
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bool m_lastControlJump;
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bool m_lastControlDown;
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GameTimer m_reJumpTimer;
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Maybe<GameTimer> m_jumpHoldTimer;
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GameTimer m_groundMovementSustainTimer;
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// Target horizontal velocity for walking / running
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float m_targetHorizontalAmbulatingVelocity;
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};
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class PathController {
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public:
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PathController(World* world);
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PlatformerAStar::Parameters const& parameters();
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void setParameters(PlatformerAStar::Parameters const& parameters);
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void reset();
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bool pathfinding() const;
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Maybe<Vec2F> targetPosition() const;
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Maybe<Direction> facing() const;
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Maybe<PlatformerAStar::Action> curAction() const;
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// return true for reaching goal, false for failing to find path, nothing for running
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Maybe<bool> findPath(ActorMovementController& movementController, Vec2F const& targetPosition);
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Maybe<bool> move(ActorMovementController& movementController, ActorMovementParameters const& parameters, ActorMovementModifiers const& modifiers, bool run, float dt);
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private:
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bool validateEdge(ActorMovementController& movementController, PlatformerAStar::Edge const& edge);
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bool movingCollision(ActorMovementController& movementController, PolyF const& collisionPoly);
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private:
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bool onGround(ActorMovementController const& movementController, Vec2F const& position, CollisionSet const& collisionSet) const;
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World* m_world;
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PlatformerAStar::Parameters m_parameters;
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Maybe<Vec2F> m_startPosition;
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Maybe<Vec2F> m_targetPosition;
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PlatformerAStar::PathFinderPtr m_pathFinder;
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Maybe<Direction> m_controlFace;
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size_t m_edgeIndex;
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float m_edgeTimer;
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Maybe<PlatformerAStar::Path> m_path;
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};
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}
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#endif
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