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monsters.cpp
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monsters.cpp
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/*
* Heart of Darkness engine rewrite
* Copyright (C) 2009-2011 Gregory Montoir (cyx@users.sourceforge.net)
*/
#include "game.h"
#include "level.h"
#include "resource.h"
#include "util.h"
// (lut[x] & 1) indicates a diagonal direction
static const uint8_t _mstLut1[] = {
// 0
0x08,
0x00, // kDirectionKeyMaskUp
0x02, // kDirectionKeyMaskRight
0x01, // kDirectionKeyMaskUp | kDirectionKeyMaskRight
// 4
0x04, // kDirectionKeyMaskDown
0x00, // kDirectionKeyMaskDown | kDirectionKeyMaskUp
0x03, // kDirectionKeyMaskDown | kDirectionKeyMaskRight
0x01, // kDirectionKeyMaskDown | kDirectionKeyMaskUp | kDirectionKeyMaskRight
// 8
0x06, // kDirectionKeyMaskLeft
0x07, // kDirectionKeyMaskLeft | kDirectionKeyMaskUp
0x02, // kDirectionKeyMaskLeft | kDirectionKeyMaskRight
0x01, // kDirectionKeyMaskLeft | kDirectionKeyMaskUp | kDirectionKeyMaskRight
// 12
0x05, // kDirectionKeyMaskLeft | kDirectionKeyMaskDown
0x07, // kDirectionKeyMaskLeft | kDirectionKeyMaskDown | kDirectionKeyMaskRight
0x03, // kDirectionKeyMaskLeft | kDirectionKeyMaskDown | kDirectionKeyMaskRight
0x01 // kDirectionKeyMaskLeft | kDirectionKeyMaskDown | kDirectionKeyMaskUp | kDirectionKeyMaskRight
};
// indexes _mstLut1
static const uint8_t _mstLut3[8 * 5] = {
0x01, 0x03, 0x09, 0x02, 0x08, 0x03, 0x02, 0x01, 0x06, 0x09, 0x02, 0x06, 0x03, 0x04, 0x01, 0x06,
0x04, 0x02, 0x0C, 0x03, 0x04, 0x0C, 0x06, 0x08, 0x02, 0x0C, 0x08, 0x04, 0x09, 0x06, 0x08, 0x09,
0x0C, 0x01, 0x04, 0x09, 0x01, 0x08, 0x03, 0x0C
};
// monster frames animation (minus #0, #4, #8, #12, #16, #20, eg. every 4th is skipped)
static const uint8_t _mstLut4[] = {
0x01, 0x02, 0x03, 0x05, 0x06, 0x07, 0x09, 0x0A, 0x0B, 0x0D, 0x0E, 0x0F, 0x11, 0x12, 0x13, 0x15,
0x16, 0x17
};
// indexes _mstLut4 clipped to [0,17], repeat the frame preceding the skipped ones
static const uint8_t _mstLut5[] = {
0x00, 0x00, 0x01, 0x02, 0x03, 0x03, 0x04, 0x05, 0x06, 0x06, 0x07, 0x08, 0x09, 0x09, 0x0A, 0x0B,
0x0C, 0x0C, 0x0D, 0x0E, 0x0F, 0x0F, 0x10, 0x11, 0x12, 0x12, 0x13, 0x14, 0x15, 0x15, 0x16, 0x17
};
static const uint8_t _fireflyPosData[] = {
0, 1, 2, 3, 4, 4, 4, 0xFF, 0, 1, 2, 2, 4, 4, 3, 0xFF,
0, 1, 1, 2, 3, 2, 3, 0xFF, 0, 1, 1, 2, 3, 3, 3, 0xFF,
0, 0, 1, 2, 2, 2, 2, 0xFF, 4, 4, 4, 3, 2, 1, 0, 0xFF,
3, 4, 4, 2, 2, 1, 0, 0xFF, 3, 2, 3, 2, 1, 1, 0, 0xFF,
3, 3, 3, 2, 1, 1, 0, 0xFF, 2, 2, 2, 2, 1, 0, 0, 0xFF
};
static const uint8_t kUndefinedMonsterByteCode[] = { 0x12, 0x34 };
static uint8_t mstGetFacingDirectionMask(uint8_t a) {
uint8_t r = 0;
if (a & kDirectionKeyMaskLeft) { // Andy left facing monster
r |= 1;
}
if (a & kDirectionKeyMaskDown) { // Andy below the monster
r |= 2;
}
return r;
}
void Game::mstMonster1ResetData(MonsterObject1 *m) {
m->m46 = 0;
LvlObject *o = m->o16;
if (o) {
o->dataPtr = 0;
}
for (int i = 0; i < kMaxMonsterObjects2; ++i) {
MonsterObject2 *mo = &_monsterObjects2Table[i];
if (mo->monster2Info && mo->monster1 == m) {
mo->monster1 = 0;
}
}
}
void Game::mstMonster2InitFirefly(MonsterObject2 *m) {
LvlObject *o = m->o;
m->x1 = _res->_mstPointOffsets[o->screenNum].xOffset;
m->y1 = _res->_mstPointOffsets[o->screenNum].yOffset;
m->x2 = m->x1 + 255;
m->y2 = m->y1 + 191;
const uint32_t num = _rnd.update();
m->hPosIndex = num % 40;
if (_fireflyPosData[m->hPosIndex] != 0xFF) {
m->hPosIndex &= ~7;
}
m->vPosIndex = m->hPosIndex;
if (num & 0x80) {
m->hPosIndex += 40;
} else {
m->vPosIndex += 40;
}
m->hDir = (num >> 16) & 1;
m->vDir = (num >> 17) & 1;
}
void Game::mstMonster2ResetData(MonsterObject2 *m) {
m->monster2Info = 0;
LvlObject *o = m->o;
if (o) {
o->dataPtr = 0;
}
}
void Game::mstTaskSetMonster2ScreenPosition(Task *t) {
MonsterObject2 *m = t->monster2;
LvlObject *o = m->o;
m->xPos = o->xPos + o->posTable[7].x;
m->yPos = o->yPos + o->posTable[7].y;
m->xMstPos = m->xPos + _res->_mstPointOffsets[o->screenNum].xOffset;
m->yMstPos = m->yPos + _res->_mstPointOffsets[o->screenNum].yOffset;
}
void Game::mstMonster1ResetWalkPath(MonsterObject1 *m) {
_rnd.resetMst(m->rnd_m35);
_rnd.resetMst(m->rnd_m49);
const uint8_t *ptr = m->monsterInfos;
const int num = (~m->flagsA5) & 1;
m->levelPosBounds_x2 = m->walkNode->coords[0][num] - (int32_t)READ_LE_UINT32(ptr + 904);
m->levelPosBounds_x1 = m->walkNode->coords[1][num] + (int32_t)READ_LE_UINT32(ptr + 904);
m->levelPosBounds_y2 = m->walkNode->coords[2][num] - (int32_t)READ_LE_UINT32(ptr + 908);
m->levelPosBounds_y1 = m->walkNode->coords[3][num] + (int32_t)READ_LE_UINT32(ptr + 908);
const uint32_t indexWalkCode = m->walkNode->walkCodeReset[num];
m->walkCode = (indexWalkCode == kNone) ? 0 : &_res->_mstWalkCodeData[indexWalkCode];
}
bool Game::mstUpdateInRange(MstMonsterAction *m) {
if (m->unk4 == 0) {
if (mstHasMonsterInRange(m, 0) && addChasingMonster(m, 0)) {
return true;
}
} else {
int direction = _rnd.update() & 1;
if (mstHasMonsterInRange(m, direction) && addChasingMonster(m, direction)) {
return true;
}
direction ^= 1;
if (mstHasMonsterInRange(m, direction) && addChasingMonster(m, direction)) {
return true;
}
}
return false;
}
bool Game::addChasingMonster(MstMonsterAction *m48, uint8_t direction) {
debug(kDebug_MONSTER, "addChasingMonster %d", direction);
m48->direction = direction;
if (m48->codeData != kNone) {
Task *t = createTask(_res->_mstCodeData + m48->codeData * 4);
if (!t) {
return false;
}
while ((this->*(t->run))(t) == 0);
}
_mstActionNum = m48 - &_res->_mstMonsterActionData[0];
_mstChasingMonstersCount = 0;
for (int i = 0; i < m48->areaCount; ++i) {
MstMonsterAreaAction *unk4 = m48->area[i].data;
const uint8_t num = unk4->monster1Index;
if (num != 0xFF) {
assert(num < kMaxMonsterObjects1);
unk4->direction = direction;
MonsterObject1 *m = &_monsterObjects1Table[num];
m->action = unk4;
m->flags48 |= 0x40;
m->flagsA5 = (m->flagsA5 & ~0x75) | 0xA;
mstMonster1ResetWalkPath(m);
Task *current = _monsterObjects1TasksList;
Task *t = m->task;
assert(t);
while (current) {
Task *next = current->nextPtr;
if (current == t) {
removeTask(&_monsterObjects1TasksList, t);
appendTask(&_monsterObjects1TasksList, t);
break;
}
current = next;
}
const uint32_t codeData = unk4->codeData;
assert(codeData != kNone);
resetTask(t, _res->_mstCodeData + codeData * 4);
++_mstChasingMonstersCount;
}
}
debug(kDebug_MONSTER, "_mstChasingMonstersCount %d", _mstChasingMonstersCount);
return true;
}
void Game::mstMonster1ClearChasingMonster(MonsterObject1 *m) {
m->flags48 &= ~0x50;
m->action->monster1Index = 0xFF;
m->action = 0;
--_mstChasingMonstersCount;
if (_mstChasingMonstersCount <= 0) {
_mstActionNum = -1;
}
}
void Game::mstTaskSetMonster1BehaviorState(Task *t, MonsterObject1 *m, int num) {
MstBehaviorState *behaviorState = &m->m46->data[num];
m->behaviorState = behaviorState;
m->monsterInfos = _res->_mstMonsterInfos + behaviorState->indexMonsterInfo * kMonsterInfoDataSize;
if (behaviorState->indexUnk51 == kNone) {
m->flags48 &= ~4;
}
const uint32_t indexWalkPath = behaviorState->walkPath;
m->walkNode = _res->_mstWalkPathData[indexWalkPath].data;
mstTaskUpdateScreenPosition(t);
if (!mstMonster1UpdateWalkPath(m)) {
mstMonster1ResetWalkPath(m);
}
if (t->run == &Game::mstTask_monsterWait4) {
t->run = &Game::mstTask_main;
}
if ((m->flagsA5 & 8) == 0 && t->run == &Game::mstTask_idle) {
mstTaskSetNextWalkCode(t);
}
}
int Game::mstTaskStopMonsterObject1(Task *t) {
if (_mstActionNum == -1) {
return 0;
}
MonsterObject1 *m = t->monster1;
// bugfix: original code likely meant to check bit 3 directly
// eg. the function should return if bit 3 is not set
// mov dl, [esi+MonsterObject1.flagsA5]
// test dl, dl
// setz al
// test al, 8
// jnz short return_0
if ((m->flagsA5 & 8) == 0) {
warning("Unexpected flags 0x%x for stopMonsterObject1", m->flagsA5);
}
const MstMonsterAreaAction *m48 = m->action;
if (!m48) {
return 0;
}
const uint32_t codeData = m48->codeData2;
if (codeData != kNone) {
resetTask(t, _res->_mstCodeData + codeData * 4);
mstMonster1ClearChasingMonster(m);
return 0;
}
mstMonster1ClearChasingMonster(m);
if (m->flagsA5 & 0x80) {
m->flagsA5 &= ~8;
const uint32_t codeData = m->behaviorState->codeData;
if (codeData != kNone) {
resetTask(t, _res->_mstCodeData + codeData * 4);
return 0;
}
m->o16->actionKeyMask = 7;
m->o16->directionKeyMask = 0;
t->run = &Game::mstTask_idle;
return 0;
}
m->flagsA5 = (m->flagsA5 & ~9) | 6;
if (m->flagsA6 & 2) {
return 0;
}
return mstTaskInitMonster1Type2(t, 1);
}
void Game::mstMonster1SetScreenPosition(MonsterObject1 *m) {
LvlObject *o = m->o16;
o->xPos = m->xPos - o->posTable[7].x;
o->yPos = m->yPos - o->posTable[7].y;
m->xMstPos = m->xPos + _res->_mstPointOffsets[o->screenNum].xOffset;
m->yMstPos = m->yPos + _res->_mstPointOffsets[o->screenNum].yOffset;
}
bool Game::mstMonster1SetWalkingBounds(MonsterObject1 *m) {
MstBehaviorState *behaviorState = m->behaviorState;
const uint32_t indexWalkPath = behaviorState->walkPath;
MstWalkPath *walkPath = &_res->_mstWalkPathData[indexWalkPath];
MstWalkNode *walkNode = walkPath->data;
int x = m->xMstPos;
int y = m->yMstPos;
if (m->levelPosBounds_x1 >= 0) {
if (x < m->levelPosBounds_x1) {
x = m->levelPosBounds_x1;
} else if (x > m->levelPosBounds_x2) {
x = m->levelPosBounds_x2;
}
if (y < m->levelPosBounds_y1) {
y = m->levelPosBounds_y1;
} else if (y > m->levelPosBounds_y2) {
y = m->levelPosBounds_y2;
}
}
const uint32_t indexWalkBox = walkPath->data[0].walkBox;
const MstWalkBox *m34 = &_res->_mstWalkBoxData[indexWalkBox];
int xWalkBox = (m34->right - m34->left) / 2 + m34->left;
int minDistance = 0x1000000;
int yWalkBox = y;
uint32_t i = 0;
for (; i < walkPath->count; ++i) {
const uint32_t indexWalkBox = walkPath->data[i].walkBox;
const MstWalkBox *m34 = &_res->_mstWalkBoxData[indexWalkBox];
if (!rect_contains(m34->left, m34->top, m34->right, m34->bottom, x, y)) {
// find the closest box
const int d1 = ABS(x - m34->left);
if (d1 < minDistance) {
minDistance = d1;
walkNode = &walkPath->data[i];
xWalkBox = m34->left;
}
const int d2 = ABS(x - m34->right);
if (d2 < minDistance) {
minDistance = d2;
walkNode = &walkPath->data[i];
xWalkBox = m34->right;
}
} else {
// find match, point is in the box
xWalkBox = x;
yWalkBox = y;
walkNode = &walkPath->data[i];
break;
}
}
if (i == walkPath->count) {
// calculate the yPos for the walkBox
const uint32_t indexWalkBox = walkNode->walkBox;
const MstWalkBox *m34 = &_res->_mstWalkBoxData[indexWalkBox];
if (y <= m34->bottom) {
y = (m34->bottom - m34->top) / 2 + m34->top;
}
yWalkBox = y;
}
// find screenNum for level position
int screenNum = -1;
int xLevelPos;
int yLevelPos;
for (int i = 0; i < _res->_mstHdr.screensCount; ++i) {
xLevelPos = _res->_mstPointOffsets[i].xOffset;
yLevelPos = _res->_mstPointOffsets[i].yOffset;
if (rect_contains(xLevelPos, yLevelPos, xLevelPos + 255, yLevelPos + 191, xWalkBox, yWalkBox)) {
screenNum = i;
break;
}
}
if (screenNum == -1) {
screenNum = 0;
xLevelPos = _res->_mstPointOffsets[0].xOffset + 256 / 2;
yLevelPos = _res->_mstPointOffsets[0].yOffset + 192 / 2;
}
LvlObject *o = m->o16;
o->screenNum = screenNum;
m->xPos = xWalkBox - xLevelPos;
m->yPos = yWalkBox - yLevelPos;
mstMonster1SetScreenPosition(m);
m->walkNode = walkNode;
mstMonster1ResetWalkPath(m);
return true;
}
bool Game::mstMonster1UpdateWalkPath(MonsterObject1 *m) {
debug(kDebug_MONSTER, "mstMonster1UpdateWalkPath m %p", m);
const uint8_t screenNum = m->o16->screenNum;
MstBehaviorState *behaviorState = m->behaviorState;
const uint32_t indexWalkPath = behaviorState->walkPath;
MstWalkPath *walkPath = &_res->_mstWalkPathData[indexWalkPath];
// start from screen number
uint32_t indexWalkNode = walkPath->walkNodeData[screenNum];
if (indexWalkNode != kNone) {
MstWalkNode *walkNode = &walkPath->data[indexWalkNode];
uint32_t indexWalkBox = walkNode->walkBox;
const MstWalkBox *m34 = &_res->_mstWalkBoxData[indexWalkBox];
while (m34->left <= m->xMstPos) {
if (m34->right >= m->xMstPos && m34->top <= m->yMstPos && m34->bottom >= m->yMstPos) {
if (m->walkNode == walkNode) {
return false;
}
m->walkNode = walkNode;
mstMonster1ResetWalkPath(m);
return true;
}
indexWalkNode = walkNode->nextWalkNode;
if (indexWalkNode == kNone) {
break;
}
walkNode = &walkPath->data[indexWalkNode];
indexWalkBox = walkNode->walkBox;
m34 = &_res->_mstWalkBoxData[indexWalkBox];
}
}
return mstMonster1SetWalkingBounds(m);
}
uint32_t Game::mstMonster1GetNextWalkCode(MonsterObject1 *m) {
MstWalkCode *walkCode = m->walkCode;
int num = 0;
if (walkCode->indexDataCount != 0) {
num = _rnd.getMstNextNumber(m->rnd_m35);
num = walkCode->indexData[num];
}
const uint32_t codeData = walkCode->codeData[num];
return codeData;
}
int Game::mstTaskSetNextWalkCode(Task *t) {
MonsterObject1 *m = t->monster1;
assert(m);
const uint32_t codeData = mstMonster1GetNextWalkCode(m);
assert(codeData != kNone);
resetTask(t, _res->_mstCodeData + codeData * 4);
const int counter = m->executeCounter;
m->executeCounter = _executeMstLogicCounter;
return m->executeCounter - counter;
}
void Game::mstBoundingBoxClear(MonsterObject1 *m, int dir) {
assert(dir == 0 || dir == 1);
uint8_t num = m->bboxNum[dir];
if (num < _mstBoundingBoxesCount && _mstBoundingBoxesTable[num].monster1Index == m->monster1Index) {
_mstBoundingBoxesTable[num].monster1Index = 0xFF;
int i = num;
for (; i < _mstBoundingBoxesCount; ++i) {
if (_mstBoundingBoxesTable[i].monster1Index != 0xFF) {
break;
}
}
if (i == _mstBoundingBoxesCount) {
_mstBoundingBoxesCount = num;
}
}
m->bboxNum[dir] = 0xFF;
}
int Game::mstBoundingBoxCollides1(int num, int x1, int y1, int x2, int y2) const {
for (int i = 0; i < _mstBoundingBoxesCount; ++i) {
const MstBoundingBox *p = &_mstBoundingBoxesTable[i];
if (p->monster1Index == 0xFF || num == p->monster1Index) {
continue;
}
if (rect_intersects(x1, y1, x2, y2, p->x1, p->y1, p->x2, p->y2)) {
return i + 1;
}
}
return 0;
}
int Game::mstBoundingBoxUpdate(int num, int monster1Index, int x1, int y1, int x2, int y2) {
if (num == 0xFF) {
for (num = 0; num < _mstBoundingBoxesCount; ++num) {
if (_mstBoundingBoxesTable[num].monster1Index == 0xFF) {
break;
}
}
assert(num < kMaxBoundingBoxes);
MstBoundingBox *p = &_mstBoundingBoxesTable[num];
p->x1 = x1;
p->y1 = y1;
p->x2 = x2;
p->y2 = y2;
p->monster1Index = monster1Index;
if (num == _mstBoundingBoxesCount) {
++_mstBoundingBoxesCount;
}
} else if (num < _mstBoundingBoxesCount) {
MstBoundingBox *p = &_mstBoundingBoxesTable[num];
if (p->monster1Index == monster1Index) {
p->x1 = x1;
p->y1 = y1;
p->x2 = x2;
p->y2 = y2;
}
}
return num;
}
int Game::mstBoundingBoxCollides2(int monster1Index, int x1, int y1, int x2, int y2) const {
for (int i = 0; i < _mstBoundingBoxesCount; ++i) {
const MstBoundingBox *p = &_mstBoundingBoxesTable[i];
if (p->monster1Index == 0xFF || p->monster1Index == monster1Index) {
continue;
}
if (p->monster1Index == 0xFE) { // Andy
if (_monsterObjects1Table[monster1Index].monsterInfos[944] != 15) {
continue;
}
}
if (rect_intersects(x1, y1, x2, y2, p->x1, p->y1, p->x2, p->y2)) {
return i + 1;
}
}
return 0;
}
int Game::getMstDistance(int y, const AndyShootData *p) const {
switch (p->directionMask) {
case 0:
if (p->boundingBox.x1 <= _mstTemp_x2 && p->boundingBox.y2 >= _mstTemp_y1 && p->boundingBox.y1 <= _mstTemp_y2) {
const int dx = _mstTemp_x1 - p->boundingBox.x2;
if (dx <= 0) {
return 0;
}
return (p->type == 3) ? 0 : dx / p->width;
}
break;
case 1:
{
const int dx = p->boundingBox.x2 - _mstTemp_x1;
if (dx >= 0) {
const int dy = p->boundingBox.y1 - dx * 2 / 3;
if (dy <= _mstTemp_y2) {
const int dx2 = p->boundingBox.x1 - _mstTemp_x2;
if (dx2 <= 0) {
return (p->boundingBox.y2 >= _mstTemp_y1) ? 0 : -1;
}
const int dy2 = p->boundingBox.y2 + dx2 * 2 / 3;
if (dy2 > _mstTemp_y1) {
return (p->type == 3) ? 0 : dx2 / p->width;
}
}
}
}
break;
case 2: {
const int dx = _mstTemp_x1 - p->boundingBox.x2;
if (dx >= 0) {
const int dy = p->boundingBox.y2 + dx * 2 / 3;
if (dy >= _mstTemp_x1) {
const int dx2 = p->boundingBox.x1 - _mstTemp_x2;
if (dx2 <= 0) {
return (p->boundingBox.y1 <= _mstTemp_y2) ? 0 : -1;
}
const int dy2 = p->boundingBox.y1 + dx2 * 2 / 3;
if (dy2 <= _mstTemp_y2) {
return (p->type == 3) ? 0 : dx2 / p->width;
}
}
}
}
break;
case 3: {
const int dx = _mstTemp_x2 - p->boundingBox.x1;
if (dx >= 0) {
const int dy = p->boundingBox.y1 - dx * 2 / 3;
if (dy <= _mstTemp_y2) {
const int dx2 = _mstTemp_x1 - p->boundingBox.x2;
if (dx2 <= 0) {
return (p->boundingBox.y2 >= _mstTemp_y1) ? 0 : -1;
}
const int dy2 = p->boundingBox.y2 - dx2 * 2 / 3;
if (dy2 >= _mstTemp_y1) {
return (p->type == 3) ? 0 : dx2 / p->width;
}
}
}
}
break;
case 4:
{
const int dx = _mstTemp_x2 - p->boundingBox.x1;
if (dx >= 0) {
const int dy = dx * 2 / 3 + p->boundingBox.y2;
if (dy >= _mstTemp_y1) {
const int dx2 = _mstTemp_x1 - p->boundingBox.x2;
if (dx2 <= 0) {
return (p->boundingBox.y1 <= _mstTemp_y2) ? 0 : -1;
}
const int dy2 = dx2 * 2 / 3 + + p->boundingBox.y1;
if (dy2 <= _mstTemp_y2) {
return (p->type == 3) ? 0 : dx2 / p->width;
}
}
}
}
break;
case 5:
if (p->boundingBox.x2 >= _mstTemp_x1 && p->boundingBox.y2 >= _mstTemp_y1 && p->boundingBox.y1 <= _mstTemp_y2) {
const int dx = p->boundingBox.x1 - _mstTemp_x2;
if (dx <= 0) {
return 0;
}
return (p->type == 3) ? 0 : dx / p->width;
}
break;
case 6:
if (p->boundingBox.y2 >= _mstTemp_y1 && p->boundingBox.x2 >= _mstTemp_x1 && p->boundingBox.x1 <= _mstTemp_x2) {
const int dy = p->boundingBox.y1 - _mstTemp_y2;
if (dy <= 0) {
return 0;
}
return (p->type == 3) ? 0 : dy / p->height;
}
break;
case 7:
if (p->boundingBox.y1 <= _mstTemp_y2 && p->boundingBox.x2 >= _mstTemp_x1 && p->boundingBox.x1 <= _mstTemp_x2) {
const int dy = _mstTemp_y1 - p->boundingBox.y2;
if (dy <= 0) {
return 0;
}
return (p->type == 3) ? 0 : dy / p->height;
}
break;
case 128: // 8
if (p->boundingBox.x1 <= _mstTemp_x2 && y >= _mstTemp_y1 && y - _mstTemp_y2 <= 9) {
const int dx = _mstTemp_x1 - p->boundingBox.x2;
if (dx <= 0) {
return 0;
}
return dx / p->width;
}
break;
case 133: // 9
if (p->boundingBox.x2 >= _mstTemp_x1 && y >= _mstTemp_y1 && y - _mstTemp_y2 <= 9) {
const int dx = _mstTemp_x2 - p->boundingBox.x1;
if (dx <= 0) {
return 0;
}
return dx / p->width;
}
break;
}
return -1;
}
void Game::mstTaskUpdateScreenPosition(Task *t) {
MonsterObject1 *m = t->monster1;
assert(m);
LvlObject *o = m->o20;
if (!o) {
o = m->o16;
}
assert(o);
m->xPos = o->xPos + o->posTable[7].x;
m->yPos = o->yPos + o->posTable[7].y;
m->xMstPos = m->xPos + _res->_mstPointOffsets[o->screenNum].xOffset;
m->yMstPos = m->yPos + _res->_mstPointOffsets[o->screenNum].yOffset;
const uint8_t *ptr = m->monsterInfos;
if (ptr[946] & 4) {
const uint8_t *ptr1 = ptr + (o->flags0 & 0xFF) * kMonsterInfoSize;
if (ptr1[0xE] != 0) {
_mstTemp_x1 = m->xMstPos + (int8_t)ptr1[0xC];
_mstTemp_y1 = m->yMstPos + (int8_t)ptr1[0xD];
_mstTemp_x2 = _mstTemp_x1 + ptr1[0xE] - 1;
_mstTemp_y2 = _mstTemp_y1 + ptr1[0xF] - 1;
m->bboxNum[0] = mstBoundingBoxUpdate(m->bboxNum[0], m->monster1Index, _mstTemp_x1, _mstTemp_y1, _mstTemp_x2, _mstTemp_y2);
} else {
mstBoundingBoxClear(m, 0);
}
}
m->xDelta = _mstAndyLevelPosX - m->xMstPos;
if (m->xDelta < 0) {
m->xDelta = -m->xDelta;
m->facingDirectionMask = kDirectionKeyMaskLeft;
} else {
m->facingDirectionMask = kDirectionKeyMaskRight;
}
m->yDelta = _mstAndyLevelPosY - m->yMstPos;
if (m->yDelta < 0) {
m->yDelta = -m->yDelta;
m->facingDirectionMask |= kDirectionKeyMaskUp;
} else {
m->facingDirectionMask |= kDirectionKeyMaskDown;
}
m->collideDistance = -1;
m->shootData = 0;
if (_andyShootsCount != 0 && !_specialAnimFlag && (o->flags1 & 6) != 6 && (m->localVars[7] > 0 || m->localVars[7] < -1) && (m->flagsA5 & 0x80) == 0) {
for (int i = 0; i < _andyShootsCount; ++i) {
AndyShootData *p = &_andyShootsTable[i];
if (m->xDelta > 256 || m->yDelta > 192) {
continue;
}
_mstTemp_x1 = o->xPos;
_mstTemp_y1 = o->yPos;
_mstTemp_x2 = o->xPos + o->width - 1;
_mstTemp_y2 = o->yPos + o->height - 1;
const uint8_t _al = p->type;
if (_al == 1 || _al == 2) {
if (p->monsterDistance >= m->xDelta + m->yDelta) {
if (o->screenNum != _currentScreen) {
const int dx = _res->_mstPointOffsets[o->screenNum].xOffset - _res->_mstPointOffsets[_currentScreen].xOffset;
const int dy = _res->_mstPointOffsets[o->screenNum].yOffset - _res->_mstPointOffsets[_currentScreen].yOffset;
_mstTemp_x1 += dx;
_mstTemp_x2 += dx;
_mstTemp_y1 += dy;
_mstTemp_y2 += dy;
}
if (rect_intersects(0, 0, 255, 191, _mstTemp_x1, _mstTemp_y1, _mstTemp_x2, _mstTemp_y2)) {
const uint8_t type = m->monsterInfos[944];
if ((type == 9 && clipLvlObjectsSmall(p->o, o, 132)) || (type != 9 && clipLvlObjectsSmall(p->o, o, 20))) {
p->m = m;
p->monsterDistance = m->xDelta + m->yDelta;
p->clipX = _clipBoxOffsetX;
p->clipY = _clipBoxOffsetY;
}
}
if (o->screenNum != _currentScreen) {
const int dx = _res->_mstPointOffsets[_currentScreen].xOffset - _res->_mstPointOffsets[o->screenNum].xOffset;
const int dy = _res->_mstPointOffsets[_currentScreen].yOffset - _res->_mstPointOffsets[o->screenNum].yOffset;
_mstTemp_x1 += dx;
_mstTemp_x2 += dx;
_mstTemp_y1 += dy;
_mstTemp_y2 += dy;
}
}
} else if (_al == 3 && p->monsterDistance > m->xDelta + m->yDelta) {
if (o->screenNum != _currentScreen) {
const int dx = _res->_mstPointOffsets[o->screenNum].xOffset - _res->_mstPointOffsets[_currentScreen].xOffset;
const int dy = _res->_mstPointOffsets[o->screenNum].yOffset - _res->_mstPointOffsets[_currentScreen].yOffset;
_mstTemp_x1 += dx;
_mstTemp_x2 += dx;
_mstTemp_y1 += dy;
_mstTemp_y2 += dy;
}
if (rect_intersects(0, 0, 255, 191, _mstTemp_x1, _mstTemp_y1, _mstTemp_x2, _mstTemp_y2)) {
if (testPlasmaCannonPointsDirection(_mstTemp_x1, _mstTemp_y1, _mstTemp_x2, _mstTemp_y2)) {
p->monsterDistance = m->xDelta + m->yDelta;
p->m = m;
p->plasmaCannonPointsCount = _plasmaCannonLastIndex1;
}
}
const int dx = _res->_mstPointOffsets[_currentScreen].xOffset - _res->_mstPointOffsets[o->screenNum].xOffset;
const int dy = _res->_mstPointOffsets[_currentScreen].yOffset - _res->_mstPointOffsets[o->screenNum].yOffset;
_mstTemp_x1 += dx;
_mstTemp_x2 += dx;
_mstTemp_y1 += dy;
_mstTemp_y2 += dy;
}
_mstTemp_x1 += _res->_mstPointOffsets[o->screenNum].xOffset;
_mstTemp_y1 += _res->_mstPointOffsets[o->screenNum].yOffset;
_mstTemp_x2 += _res->_mstPointOffsets[o->screenNum].xOffset;
_mstTemp_y2 += _res->_mstPointOffsets[o->screenNum].yOffset;
int res = getMstDistance((m->monsterInfos[946] & 2) != 0 ? p->boundingBox.y2 : m->yMstPos, p);
if (res < 0) {
continue;
}
if (m->collideDistance == -1 || m->collideDistance > res || (m->collideDistance == 0 && res == 0 && (m->shootData->type & 1) == 0 && p->type == 2)) {
m->shootData = p;
m->collideDistance = res;
}
}
}
if (m->facingDirectionMask & kDirectionKeyMaskLeft) {
m->goalPosBounds_x1 = READ_LE_UINT32(ptr + 920);
m->goalPosBounds_x2 = READ_LE_UINT32(ptr + 924);
} else {
m->goalPosBounds_x1 = READ_LE_UINT32(ptr + 912);
m->goalPosBounds_x2 = READ_LE_UINT32(ptr + 916);
}
// m->unk90 =
// m->unk8C =
if (_andyShootsTable[0].type == 3 && m->shootSource != 0 && _andyShootsTable[0].directionMask == m->shootDirection && m->directionKeyMask == _andyObject->directionKeyMask) {
m->flags48 |= 0x80;
} else {
m->shootDirection = -1;
m->flags48 &= ~0x80;
}
}
void Game::shuffleMstMonsterActionIndex(MstMonsterActionIndex *p) {
for (uint32_t i = 0; i < p->dataCount; ++i) {
p->data[i] &= 0x7F;
}
shuffleArray(p->data, p->dataCount);
}
void Game::initMstCode() {
memset(_mstVars, 0, sizeof(_mstVars));
if (_mstDisabled) {
return;
}
// _mstLut initialization
resetMstCode();
}
void Game::resetMstCode() {
if (_mstDisabled) {
return;
}
_mstFlags = 0;
for (int i = 0; i < kMaxMonsterObjects1; ++i) {
mstMonster1ResetData(&_monsterObjects1Table[i]);
}
for (int i = 0; i < kMaxMonsterObjects2; ++i) {
mstMonster2ResetData(&_monsterObjects2Table[i]);
}
clearLvlObjectsList1();
for (int i = 0; i < _res->_mstHdr.screenAreaDataCount; ++i) {
_res->_mstScreenAreaData[i].unk0x1D = 1;
}
_rnd.initMstTable();
_rnd.initTable();
for (int i = 0; i < _res->_mstHdr.movingBoundsDataCount; ++i) {
const int count = _res->_mstMovingBoundsData[i].indexDataCount;
if (count != 0) {
shuffleArray(_res->_mstMovingBoundsData[i].indexData, count);
}
}
for (int i = 0; i < _res->_mstHdr.walkCodeDataCount; ++i) {
const int count = _res->_mstWalkCodeData[i].indexDataCount;
if (count != 0) {
shuffleArray(_res->_mstWalkCodeData[i].indexData, count);
}
}
for (int i = 0; i < _res->_mstHdr.monsterActionIndexDataCount; ++i) {
shuffleMstMonsterActionIndex(&_res->_mstMonsterActionIndexData[i]);
}
_mstOp67_x1 = -256;
_mstOp67_x2 = -256;
memset(_monsterObjects1Table, 0, sizeof(_monsterObjects1Table));
memset(_monsterObjects2Table, 0, sizeof(_monsterObjects2Table));
memset(_mstVars, 0, sizeof(_mstVars));
memset(_tasksTable, 0, sizeof(_tasksTable));
_m43Num3 = _m43Num1 = _m43Num2 = _mstActionNum = -1;
_mstOp54Counter = 0; // bugfix: not reset in the original, causes uninitialized reads at the beginning of 'fort'
_executeMstLogicPrevCounter = _executeMstLogicCounter = 0;
// _mstUnk8 = 0;
_specialAnimFlag = false;
_mstAndyRectNum = 0xFF;
_mstBoundingBoxesCount = 0;
_mstOp67_y1 = 0;
_mstOp67_y2 = 0;
_mstOp67_screenNum = -1;
_mstOp68_x1 = 256;
_mstOp68_x2 = 256;
_mstOp68_y1 = 0;
_mstOp68_y2 = 0;
_mstOp68_screenNum = -1;
_mstLevelGatesMask = 0;
// _mstLevelGatesTestMask = 0xFFFFFFFF;
_mstAndyVarMask = 0;
_tasksList = 0;
_monsterObjects1TasksList = 0;
_monsterObjects2TasksList = 0;
// _mstTasksList3 = 0;
// _mstTasksList4 = 0;
if (_res->_mstTickCodeData != kNone) {
_mstVars[31] = _mstTickDelay = _res->_mstTickDelay;
} else {
_mstVars[31] = -1;
}
_mstVars[30] = 0x20;
for (int i = 0; i < kMaxMonsterObjects1; ++i) {
_monsterObjects1Table[i].monster1Index = i;
}
for (int i = 0; i < kMaxMonsterObjects2; ++i) {
_monsterObjects2Table[i].monster2Index = i;
}
mstUpdateRefPos();
_mstAndyLevelPrevPosX = _mstAndyLevelPosX;
_mstAndyLevelPrevPosY = _mstAndyLevelPosY;
}
void Game::startMstCode() {
mstUpdateRefPos();
_mstAndyLevelPrevPosX = _mstAndyLevelPosX;
_mstAndyLevelPrevPosY = _mstAndyLevelPosY;
int offset = 0;
for (int i = 0; i < _res->_mstHdr.infoMonster1Count; ++i) {
offset += kMonsterInfoDataSize;
const uint32_t unk30 = READ_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x30]); // 900
const uint32_t unk34 = READ_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x34]); // 896
const uint32_t unk20 = _mstAndyLevelPosX - unk30;
const uint32_t unk1C = _mstAndyLevelPosX + unk30;
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x20], unk20);
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x1C], unk1C);
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x24], unk20 - unk34);
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x18], unk1C + unk34);
const uint32_t unk10 = _mstAndyLevelPosY - unk30;
const uint32_t unk0C = _mstAndyLevelPosY + unk30;
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x10], unk10);
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x0C], unk0C);
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x14], unk10 - unk34);
WRITE_LE_UINT32(&_res->_mstMonsterInfos[offset - 0x08], unk0C + unk34);
}
if (_level->_checkpoint < _res->_mstHdr.levelCheckpointCodeDataCount) {
const uint32_t codeData = _res->_mstLevelCheckpointCodeData[_level->_checkpoint];
if (codeData != kNone) {
Task *t = createTask(_res->_mstCodeData + codeData * 4);
if (t) {
_runTaskOpcodesCount = 0;
while ((this->*(t->run))(t) == 0);
}
}
}
}
static bool compareOp(int op, int num1, int num2) {
switch (op) {
case 0:
return num1 != num2;
case 1:
return num1 == num2;
case 2:
return num1 >= num2;
case 3:
return num1 > num2;
case 4:
return num1 <= num2;
case 5:
return num1 < num2;
case 6:
return (num1 & num2) == 0;
case 7:
return (num1 | num2) == 0;
case 8:
return (num1 ^ num2) == 0;
default:
error("compareOp unhandled op %d", op);
break;
}
return false;
}
static void arithOp(int op, int *p, int num) {
switch (op) {
case 0:
*p = num;
break;
case 1:
*p += num;
break;
case 2:
*p -= num;
break;
case 3:
*p *= num;
break;
case 4:
if (num != 0) {
*p /= num;
}
break;
case 5:
*p <<= num;
break;
case 6:
*p >>= num;
break;
case 7:
*p &= num;
break;
case 8:
*p |= num;
break;
case 9:
*p ^= num;
break;
default:
error("arithOp unhandled op %d", op);
break;
}
}
void Game::executeMstCode() {
_andyActionKeyMaskAnd = 0xFF;
_andyDirectionKeyMaskAnd = 0xFF;
_andyActionKeyMaskOr = 0;
_andyDirectionKeyMaskOr = 0;
if (_mstDisabled) {
return;
}
++_executeMstLogicCounter;
if (_mstLevelGatesMask != 0) {
executeMstCodeHelper1();
_mstLevelGatesMask = 0;
}
for (int i = 0; i < kMaxAndyShoots; ++i) {
_andyShootsTable[i].shootObjectData = 0;
_andyShootsTable[i].m = 0;
_andyShootsTable[i].monsterDistance = 0x1000000;
}
mstUpdateMonster1ObjectsPosition();
if (_mstVars[31] > 0) {