Add CStateMachine, mostly matched, constructor needs work

This commit is contained in:
Phillip Stephens 2022-10-22 21:49:41 -07:00
parent 8fad208125
commit 06464964dd
7 changed files with 300 additions and 3 deletions

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@ -92,7 +92,7 @@ LIBS = [
"MetroidPrime/ScriptObjects/CScriptWaypoint",
"MetroidPrime/Enemies/CPatterned",
"MetroidPrime/ScriptObjects/CScriptDoor",
"MetroidPrime/Enemies/CStateMachine",
["MetroidPrime/Enemies/CStateMachine", False],
"MetroidPrime/CMapArea",
["MetroidPrime/Cameras/CBallCamera", False],
"MetroidPrime/ScriptObjects/CScriptEffect",

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@ -64,6 +64,11 @@ template <>
inline bool cinput_stream_helper(const TType< bool >& type, CInputStream& in) {
return in.ReadBool();
}
template <>
inline char cinput_stream_helper(const TType< char >& type, CInputStream& in) {
return in.ReadChar();
}
template <>
inline int cinput_stream_helper(const TType< int >& type, CInputStream& in) {
return in.ReadLong();

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@ -16,8 +16,8 @@ class CAiFuncMap;
class CAi : public CPhysicsActor {
public:
// static void CreateFuncLookup(CAiFuncMap* funcMap);
// static CAiStateFunc GetStateFunc(std::string_view func);
// static CAiTriggerFunc GetTriggerFunc(std::string_view func);
static CAiStateFunc GetStateFunc(const char* func);
static CAiTriggerFunc GetTriggerFunc(const char* func);
// const CStateMachine* GetStateMachine() const;
~CAi();

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@ -9,6 +9,11 @@ enum EStateMsg {
kStateMsg_Deactivate = 2,
};
class CAi;
class CStateManager;
typedef void (CAi::*CAiStateFunc)(CStateManager& mgr, EStateMsg msg, float arg);
typedef bool (CAi::*CAiTriggerFunc)(CStateManager& mgr, float arg);
class CAiFuncMap {
public:
CAiFuncMap();

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@ -0,0 +1,120 @@
#ifndef _CSTATEMACHINE
#define _CSTATEMACHINE
#include "rstl/string.hpp"
#include "rstl/vector.hpp"
#include "string.h"
#include "MetroidPrime/Enemies/CAiFuncMap.hpp"
class CAi;
class CStateManager;
class CInputStream;
class CAiState;
class CAiTrigger {
public:
CAiTrigger()
: x0_func(nullptr), xc_arg(0.f), x10_andTrigger(nullptr), x14_state(nullptr), x18_lNot(false) {}
CAiTrigger* GetAnd() const { return x10_andTrigger; }
CAiState* GetState() const { return x14_state; }
bool CallFunc(CStateManager& mgr, CAi& ai) {
bool ret = true;
if (x0_func) {
ret = (ai.*x0_func)(mgr, xc_arg);
if (x18_lNot) {
ret = !ret;
}
}
return ret;
}
void Setup(CAiTriggerFunc func, bool lnot, float arg, CAiTrigger* andTrig) {
x0_func = func;
x18_lNot = lnot;
xc_arg = arg;
x10_andTrigger = andTrig;
}
void Setup(CAiTriggerFunc func, bool lnot, float arg, CAiState* state) {
x0_func = func;
x18_lNot = lnot;
xc_arg = arg;
x14_state = state;
}
private:
CAiTriggerFunc x0_func;
float xc_arg;
CAiTrigger* x10_andTrigger;
CAiState* x14_state;
bool x18_lNot;
};
class CAiState {
public:
CAiState(CAiStateFunc func, const char* name) {
x0_func = func;
strncpy(xc_name, name, 31);
}
CAiTrigger* GetTrig(int idx) { return &x30_firstTrigger[idx]; }
const char* GetName() const { return xc_name; }
void SetTriggers(CAiTrigger* triggers) { x30_firstTrigger = triggers; }
void SetNumTriggers(int numTriggers) { x2c_numTriggers = numTriggers; }
int GetNumTriggers() const { return x2c_numTriggers; }
void CallFunc(CStateManager& mgr, CAi& ai, EStateMsg msg, float arg) const {
if (x0_func) {
(ai.*x0_func)(mgr, msg, arg);
}
}
private:
CAiStateFunc x0_func;
char xc_name[32];
uint x2c_numTriggers;
CAiTrigger* x30_firstTrigger;
};
class CStateMachine {
public:
explicit CStateMachine(CInputStream& in);
int GetStateIndex(const rstl::string& state) const;
const rstl::vector< CAiState >& GetStateVector() const { return x0_states; }
private:
rstl::vector< CAiState > x0_states;
rstl::vector< CAiTrigger > x10_triggers;
};
class CStateMachineState {
public:
CStateMachineState();
void Update(CStateManager& mgr, CAi& ai, float delta);
void SetState(CStateManager& mgr, CAi& ai, int state);
void SetState(CStateManager& mgr, CAi&, const CStateMachine* machine, const rstl::string& state);
const rstl::vector< CAiState >& GetStateVector() const { return x0_machine->GetStateVector(); }
void Setup(const CStateMachine* machine);
const char* GetName() const;
void SetDelay(float delay) { x10_delay = delay; }
float GetTime() const { return x8_time; }
float GetRandom() const { return xc_random; }
float GetDelay() const { return x10_delay; }
void SetCodeTrigger() { x18_24_codeTrigger = true; }
private:
const CStateMachine* x0_machine;
CAiState* x4_state;
float x8_time;
float xc_random;
float x10_delay;
float x14_;
bool x18_24_codeTrigger : 1;
};
#endif // _CSTATEMACHINE

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@ -97,6 +97,7 @@ public:
~basic_string() { internal_dereference(); }
size_t size() const { return x8_size; }
void assign(const basic_string&);
basic_string& operator=(const basic_string&);
basic_string operator+(const basic_string&);

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@ -0,0 +1,166 @@
#include "MetroidPrime/Enemies/CStateMachine.hpp"
#include "MetroidPrime/Enemies/CAi.hpp"
#include "Kyoto/Streams/CInputStream.hpp"
void CStateMachineState::Update(CStateManager& mgr, CAi& ai, float delta) {
if (x4_state) {
x8_time += delta;
x4_state->CallFunc(mgr, ai, kStateMsg_Update, delta);
for (int i = 0; i < x4_state->GetNumTriggers(); ++i) {
CAiTrigger* trig = x4_state->GetTrig(i);
CAiState* state = nullptr;
bool andPassed = true;
while (andPassed && trig) {
andPassed = false;
if (trig->CallFunc(mgr, ai)) {
andPassed = true;
state = trig->GetState();
trig = trig->GetAnd();
}
}
if (andPassed && state != nullptr) {
x4_state->CallFunc(mgr, ai, kStateMsg_Deactivate, 0.f);
x4_state = state;
x8_time = 0.f;
x18_24_codeTrigger = false;
xc_random = mgr.Random()->Float();
x4_state->CallFunc(mgr, ai, kStateMsg_Activate, 0.f);
return;
}
}
}
}
void CStateMachineState::SetState(CStateManager& mgr, CAi& ai, int idx) {
const CAiState* state = &x0_machine->GetStateVector()[idx];
if (x4_state == state) {
return;
}
if (x4_state) {
x4_state->CallFunc(mgr, ai, kStateMsg_Deactivate, 0.f);
}
x4_state = const_cast< CAiState* >(state);
x8_time = 0.f;
xc_random = mgr.Random()->Float();
x18_24_codeTrigger = false;
x4_state->CallFunc(mgr, ai, kStateMsg_Activate, 0.f);
}
void CStateMachineState::SetState(CStateManager& mgr, CAi& ai, const CStateMachine* machine,
const rstl::string& state) {
if (!machine)
return;
if (!x0_machine)
Setup(machine);
s32 idx = machine->GetStateIndex(state);
SetState(mgr, ai, idx);
}
CStateMachineState::CStateMachineState()
: x0_machine(nullptr)
, x4_state(nullptr)
, x8_time(0.f)
, xc_random(0.f)
, x10_delay(0.f)
, x18_24_codeTrigger(false) {}
void CStateMachineState::Setup(const CStateMachine* machine) {
x0_machine = machine;
x4_state = nullptr;
x8_time = 0.f;
xc_random = 0.f;
x10_delay = 0.f;
}
const char* CStateMachineState::GetName() const {
if (x4_state != nullptr) {
return x4_state->GetName();
}
return nullptr;
}
CStateMachine::CStateMachine(CInputStream& in) {
CAiTrigger* lastTrig = nullptr;
int stateCount = in.ReadLong();
x0_states.reserve(stateCount);
for (int i = 0; i < stateCount; ++i) {
char name[32];
int nameLen = 0;
for (; nameLen < 31; ++nameLen) {
name[nameLen] = in.Get< char >();
if (name[nameLen] == '\0') {
break;
}
}
name[nameLen] = '\0';
CAiStateFunc func = CAi::GetStateFunc(name);
x0_states.push_back(CAiState(func, name));
}
x10_triggers.reserve(in.Get< int >());
for (int i = 0; i < stateCount; ++i) {
x0_states[i].SetNumTriggers(in.Get< int >());
if (x0_states[i].GetNumTriggers() == 0) {
continue;
}
CAiTrigger* firstTrig = x10_triggers.data() + x10_triggers.size();
x0_states[i].SetTriggers(firstTrig);
for (int j = 0; j < x0_states[i].GetNumTriggers(); ++j) {
const int triggerCount = in.Get< int >();
const int lastTriggerIdx = triggerCount - 1;
for (int k = 0; k < triggerCount; ++k) {
char name[32];
int nameLen = 0;
for (; nameLen < 31; ++nameLen) {
name[nameLen] = in.Get< char >();
if (name[nameLen] == '\0') {
break;
}
}
const bool isNot = name[0] == '!';
const CAiTriggerFunc func = CAi::GetTriggerFunc(isNot ? name + 1 : name);
const float arg = in.Get< float >();
CAiTrigger* newTrig;
if (k < lastTriggerIdx) {
x10_triggers.push_back(CAiTrigger());
newTrig = &x10_triggers.back();
} else {
newTrig = &firstTrig[j];
}
if (k == 0) {
newTrig->Setup(func, isNot, arg, &x0_states[in.Get< int >()]);
} else {
newTrig->Setup(func, isNot, arg, lastTrig);
}
lastTrig = newTrig;
}
}
}
}
int CStateMachine::GetStateIndex(const rstl::string& state) const {
for (int i = 0; i < x0_states.size(); ++i) {
if (strncmp(x0_states[i].GetName(), state.data(), 31) == 0) {
return i;
}
}
return 0;
}