bool KyraEngine_v2::directLinePassable(int x, int y, int toX, int toY) {
Screen *scr = screen();
while (x != toX || y != toY) {
int facing = getFacingFromPointToPoint(x, y, toX, toY);
x += _addXPosTable[facing];
y += _addYPosTable[facing];
if (!scr->getShapeFlag1(x, y))
return false;
}
return true;
}
int KyraEngine_v1::findSubPath(int x, int y, int toX, int toY, int *moveTable, int start, int end) {
// only used for debug specific code
//static uint16 unkTable[] = { 8, 5 };
static const int8 facingTable1[] = { 7, 0, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 0 };
static const int8 facingTable2[] = { -1, 0, -1, 2, -1, 4, -1, 6, -1, 2, -1, 4, -1, 6, -1, 0 };
static const int8 facingTable3[] = { 2, 4, 4, 6, 6, 0, 0, 2, 6, 6, 0, 0, 2, 2, 4, 4 };
static const int8 addPosTableX[] = { -1, 0, -1, 4, -1, 0, -1, -4, -1, -4, -1, 0, -1, 4, -1, 0 };
static const int8 addPosTableY[] = { -1, 2, -1, 0, -1, -2, -1, 0, -1, 0, -1, 2, -1, 0, -1, -2 };
// debug specific
/*++unkTable[start];
while (screen()->getPalette(0)[unkTable[start]] != 0x0F) {
++unkTable[start];
}*/
int xpos1 = x, xpos2 = x;
int ypos1 = y, ypos2 = y;
int newFacing = getFacingFromPointToPoint(x, y, toX, toY);
int position = 0;
while (position != end) {
int newFacing2 = newFacing;
while (true) {
changePosTowardsFacing(xpos1, ypos1, facingTable1[start*8 + newFacing2]);
if (!lineIsPassable(xpos1, ypos1)) {
if (facingTable1[start*8 + newFacing2] == newFacing)
return 0x7D00;
newFacing2 = facingTable1[start*8 + newFacing2];
xpos1 = x;
ypos1 = y;
continue;
}
newFacing = facingTable1[start*8 + newFacing2];
break;
}
// debug drawing
/*if (xpos1 >= 0 && ypos1 >= 0 && xpos1 < 320 && ypos1 < 200) {
screen()->setPagePixel(0, xpos1, ypos1, unkTable[start]);
screen()->updateScreen();
delayWithTicks(5);
}*/
if (newFacing & 1) {
int temp = xpos1 + addPosTableX[newFacing + start * 8];
if (toX == temp) {
temp = ypos1 + addPosTableY[newFacing + start * 8];
if (toY == temp) {
moveTable[position++] = facingTable2[newFacing + start * 8];
return position;
}
}
}
moveTable[position++] = newFacing;
x = xpos1;
y = ypos1;
if (x == toX && y == toY)
return position;
if (xpos1 == xpos2 && ypos1 == ypos2)
break;
newFacing = facingTable3[start*8 + newFacing];
}
return 0x7D00;
}