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asarium
1588644fec
This also includes the necessary setup work for using "position" and "direction" in action expressions.
113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
#pragma once
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#include "globalincs/pstypes.h"
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#include "Action.h"
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#include "common.h"
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namespace actions {
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class Program;
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class ProgramSet;
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enum class ProgramState
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{
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Running,
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Done,
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Errored
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};
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/**
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* @brief An instance of a program execution
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*
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* A program instance contains all information related to a single execution of a program. A program instance is
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* independent from other instances. Local variables used by actions are stored in a specific structure which can be
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* used by actions to keep track of state in this specific instance.
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*/
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class ProgramInstance {
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size_t _currentInstruction = 0;
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ProgramLocals _locals;
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const Program* _program = nullptr;
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public:
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explicit ProgramInstance(const Program* program);
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ProgramState step();
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ProgramLocals& locals();
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const ProgramLocals& locals() const;
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};
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/**
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* @brief A program specified in a table
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*
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* A program is a sequential collection of Actions which are executed in sequence.
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*/
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class Program {
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SCP_vector<std::unique_ptr<Action>> _actions;
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public:
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Program();
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Program(const Program& other);
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Program& operator=(const Program& other);
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Program(Program&& other) noexcept;
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Program& operator=(Program&& other) noexcept;
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const SCP_vector<std::unique_ptr<actions::Action>>& getActions() const;
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/**
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* @brief Creates a new program instance from this program
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*
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* The program instance is initialized to its initial values.
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*
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* @return The new program instance
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*/
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ProgramInstance newInstance() const;
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void parseActions(const flagset<ProgramContextFlags>& context_flags, const expression::ParseContext& context);
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};
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/**
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* @brief A set of parsed programs
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*
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* Programs are parsed in sets of zero or more programs to make it possible for the content creator to split up
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* programs.
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*/
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class ProgramSet {
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flagset<ProgramContextFlags> _contextFlags;
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SCP_vector<Program> _programs;
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public:
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ProgramSet();
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explicit ProgramSet(const flagset<ProgramContextFlags>& context_flags);
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const SCP_vector<actions::Program>& getPrograms() const;
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/**
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* @brief Starts the execution of all programs within this set with the specified parameters
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* @param objp The object on which this program is executed
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* @param local_pos The local position relative to the object or the subsystem if specified
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* @param local_orien The local orientation relative to the object or the subsystem if specified
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* @param submodel The submodel of the model to which this program is attached to.
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*/
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void start(object* objp, const vec3d* local_pos, const matrix* local_orient, int submodel = -1) const;
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/**
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* @brief Parses a program set of zero or more programs
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*
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* The tag is entirely optional and if it doesn't appear in the current table then an empty set will be returned
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* which does nothing if started.
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*
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* @param tag The tag which is required before a program can be specified
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* @param context_flags A set of flags which specify in which environment the program will be used. This is used
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* mainly for validating the used actions.
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* @return The parsed program set.
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*/
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static ProgramSet parseProgramSet(const char* tag, const flagset<ProgramContextFlags>& context_flags = {});
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};
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} // namespace actions
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