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Diffstat (limited to 'engines/sci/engine/kmovement.cpp')
-rw-r--r--engines/sci/engine/kmovement.cpp495
1 files changed, 305 insertions, 190 deletions
diff --git a/engines/sci/engine/kmovement.cpp b/engines/sci/engine/kmovement.cpp
index 8c43a35fea..db54705694 100644
--- a/engines/sci/engine/kmovement.cpp
+++ b/engines/sci/engine/kmovement.cpp
@@ -129,7 +129,7 @@ reg_t kSetJump(EngineState *s, int argc, reg_t *argv) {
// Compute x step
if (tmp != 0)
- vx = (int)(dx * sqrt(gy / (2.0 * tmp)));
+ vx = (int16)((float)(dx * sqrt(gy / (2.0 * tmp))));
else
vx = 0;
@@ -145,7 +145,7 @@ reg_t kSetJump(EngineState *s, int argc, reg_t *argv) {
// FIXME: This choice of vy makes t roughly (2+sqrt(2))/gy * sqrt(dy);
// so if gy==3, then t is roughly sqrt(dy)...
- vy = (int)sqrt((double)gy * ABS(2 * dy)) + 1;
+ vy = (int)sqrt((float)gy * ABS(2 * dy)) + 1;
} else {
// As stated above, the vertical direction is correlated to the horizontal by the
// (non-zero) factor c.
@@ -166,230 +166,345 @@ reg_t kSetJump(EngineState *s, int argc, reg_t *argv) {
return s->r_acc;
}
-#define _K_BRESEN_AXIS_X 0
-#define _K_BRESEN_AXIS_Y 1
-
-static void initialize_bresen(SegManager *segMan, int argc, reg_t *argv, reg_t mover, int step_factor, int deltax, int deltay) {
- reg_t client = readSelector(segMan, mover, SELECTOR(client));
- int stepx = (int16)readSelectorValue(segMan, client, SELECTOR(xStep)) * step_factor;
- int stepy = (int16)readSelectorValue(segMan, client, SELECTOR(yStep)) * step_factor;
- int numsteps_x = stepx ? (ABS(deltax) + stepx - 1) / stepx : 0;
- int numsteps_y = stepy ? (ABS(deltay) + stepy - 1) / stepy : 0;
- int bdi, i1;
- int numsteps;
- int deltax_step;
- int deltay_step;
-
- if (numsteps_x > numsteps_y) {
- numsteps = numsteps_x;
- deltax_step = (deltax < 0) ? -stepx : stepx;
- deltay_step = numsteps ? deltay / numsteps : deltay;
- } else { // numsteps_x <= numsteps_y
- numsteps = numsteps_y;
- deltay_step = (deltay < 0) ? -stepy : stepy;
- deltax_step = numsteps ? deltax / numsteps : deltax;
- }
-
-/* if (ABS(deltax) > ABS(deltay)) {*/ // Bresenham on y
- if (numsteps_y < numsteps_x) {
-
- writeSelectorValue(segMan, mover, SELECTOR(b_xAxis), _K_BRESEN_AXIS_Y);
- writeSelectorValue(segMan, mover, SELECTOR(b_incr), (deltay < 0) ? -1 : 1);
- //i1 = 2 * (ABS(deltay) - ABS(deltay_step * numsteps)) * ABS(deltax_step);
- //bdi = -ABS(deltax);
- i1 = 2 * (ABS(deltay) - ABS(deltay_step * (numsteps - 1))) * ABS(deltax_step);
- bdi = -ABS(deltax);
- } else { // Bresenham on x
- writeSelectorValue(segMan, mover, SELECTOR(b_xAxis), _K_BRESEN_AXIS_X);
- writeSelectorValue(segMan, mover, SELECTOR(b_incr), (deltax < 0) ? -1 : 1);
- //i1= 2 * (ABS(deltax) - ABS(deltax_step * numsteps)) * ABS(deltay_step);
- //bdi = -ABS(deltay);
- i1 = 2 * (ABS(deltax) - ABS(deltax_step * (numsteps - 1))) * ABS(deltay_step);
- bdi = -ABS(deltay);
-
- }
-
- writeSelectorValue(segMan, mover, SELECTOR(dx), deltax_step);
- writeSelectorValue(segMan, mover, SELECTOR(dy), deltay_step);
-
- debugC(2, kDebugLevelBresen, "Init bresen for mover %04x:%04x: d=(%d,%d)", PRINT_REG(mover), deltax, deltay);
- debugC(2, kDebugLevelBresen, " steps=%d, mv=(%d, %d), i1= %d, i2=%d",
- numsteps, deltax_step, deltay_step, i1, bdi*2);
-
- //writeSelectorValue(segMan, mover, SELECTOR(b_movCnt), numsteps); // Needed for HQ1/Ogre?
- writeSelectorValue(segMan, mover, SELECTOR(b_di), bdi);
- writeSelectorValue(segMan, mover, SELECTOR(b_i1), i1);
- writeSelectorValue(segMan, mover, SELECTOR(b_i2), bdi * 2);
-}
-
reg_t kInitBresen(EngineState *s, int argc, reg_t *argv) {
SegManager *segMan = s->_segMan;
reg_t mover = argv[0];
reg_t client = readSelector(segMan, mover, SELECTOR(client));
+ int16 stepFactor = (argc >= 2) ? argv[1].toUint16() : 1;
+ int16 mover_x = readSelectorValue(segMan, mover, SELECTOR(x));
+ int16 mover_y = readSelectorValue(segMan, mover, SELECTOR(y));
+ int16 client_xStep = readSelectorValue(segMan, client, SELECTOR(xStep)) * stepFactor;
+ int16 client_yStep = readSelectorValue(segMan, client, SELECTOR(yStep)) * stepFactor;
+
+ int16 client_step;
+ if (client_xStep < client_yStep)
+ client_step = client_yStep * 2;
+ else
+ client_step = client_xStep * 2;
+
+ int16 deltaX = mover_x - readSelectorValue(segMan, client, SELECTOR(x));
+ int16 deltaY = mover_y - readSelectorValue(segMan, client, SELECTOR(y));
+ int16 mover_dx = 0;
+ int16 mover_dy = 0;
+ int16 mover_i1 = 0;
+ int16 mover_i2 = 0;
+ int16 mover_di = 0;
+ int16 mover_incr = 0;
+ int16 mover_xAxis = 0;
+
+ while (1) {
+ mover_dx = client_xStep;
+ mover_dy = client_yStep;
+ mover_incr = 1;
+
+ if (ABS(deltaX) >= ABS(deltaY)) {
+ mover_xAxis = 1;
+ if (deltaX < 0)
+ mover_dx = -mover_dx;
+ mover_dy = deltaX ? mover_dx * deltaY / deltaX : 0;
+ mover_i1 = ((mover_dx * deltaY) - (mover_dy * deltaX)) * 2;
+ if (deltaY < 0) {
+ mover_incr = -1;
+ mover_i1 = -mover_i1;
+ }
+ mover_i2 = mover_i1 - (deltaX * 2);
+ mover_di = mover_i1 - deltaX;
+ if (deltaX < 0) {
+ mover_i1 = -mover_i1;
+ mover_i2 = -mover_i2;
+ mover_di = -mover_di;
+ }
+ } else {
+ mover_xAxis = 0;
+ if (deltaY < 0)
+ mover_dy = -mover_dy;
+ mover_dx = deltaY ? mover_dy * deltaX / deltaY : 0;
+ mover_i1 = ((mover_dy * deltaX) - (mover_dx * deltaY)) * 2;
+ if (deltaX < 0) {
+ mover_incr = -1;
+ mover_i1 = -mover_i1;
+ }
+ mover_i2 = mover_i1 - (deltaY * 2);
+ mover_di = mover_i1 - deltaY;
+ if (deltaY < 0) {
+ mover_i1 = -mover_i1;
+ mover_i2 = -mover_i2;
+ mover_di = -mover_di;
+ }
+ break;
+ }
+ if (client_xStep <= client_yStep)
+ break;
+ if (!client_xStep)
+ break;
+ if (client_yStep >= ABS(mover_dy + mover_incr))
+ break;
+
+ client_step--;
+ if (!client_step)
+ error("kInitBresen failed");
+ client_xStep--;
+ }
- int deltax = (int16)readSelectorValue(segMan, mover, SELECTOR(x)) - (int16)readSelectorValue(segMan, client, SELECTOR(x));
- int deltay = (int16)readSelectorValue(segMan, mover, SELECTOR(y)) - (int16)readSelectorValue(segMan, client, SELECTOR(y));
- int step_factor = (argc < 1) ? argv[1].toUint16() : 1;
-
- initialize_bresen(s->_segMan, argc, argv, mover, step_factor, deltax, deltay);
-
+ // set mover
+ writeSelectorValue(segMan, mover, SELECTOR(dx), mover_dx);
+ writeSelectorValue(segMan, mover, SELECTOR(dy), mover_dy);
+ writeSelectorValue(segMan, mover, SELECTOR(b_i1), mover_i1);
+ writeSelectorValue(segMan, mover, SELECTOR(b_i2), mover_i2);
+ writeSelectorValue(segMan, mover, SELECTOR(b_di), mover_di);
+ writeSelectorValue(segMan, mover, SELECTOR(b_incr), mover_incr);
+ writeSelectorValue(segMan, mover, SELECTOR(b_xAxis), mover_xAxis);
return s->r_acc;
}
-#define MOVING_ON_X (((axis == _K_BRESEN_AXIS_X)&&bi1) || dx)
-#define MOVING_ON_Y (((axis == _K_BRESEN_AXIS_Y)&&bi1) || dy)
-
reg_t kDoBresen(EngineState *s, int argc, reg_t *argv) {
SegManager *segMan = s->_segMan;
reg_t mover = argv[0];
reg_t client = readSelector(segMan, mover, SELECTOR(client));
+ bool completed = false;
+ bool handleMoveCount = g_sci->_features->handleMoveCount();
- int x = (int16)readSelectorValue(segMan, client, SELECTOR(x));
- int y = (int16)readSelectorValue(segMan, client, SELECTOR(y));
- int oldx, oldy, destx, desty, dx, dy, bdi, bi1, bi2, movcnt, bdelta, axis;
- uint16 signal = readSelectorValue(segMan, client, SELECTOR(signal));
- int completed = 0;
- int max_movcnt = readSelectorValue(segMan, client, SELECTOR(moveSpeed));
-
- if (getSciVersion() > SCI_VERSION_01)
- signal &= ~kSignalHitObstacle;
-
- writeSelector(segMan, client, SELECTOR(signal), make_reg(0, signal)); // This is a NOP for SCI0
- oldx = x;
- oldy = y;
- destx = (int16)readSelectorValue(segMan, mover, SELECTOR(x));
- desty = (int16)readSelectorValue(segMan, mover, SELECTOR(y));
- dx = (int16)readSelectorValue(segMan, mover, SELECTOR(dx));
- dy = (int16)readSelectorValue(segMan, mover, SELECTOR(dy));
- bdi = (int16)readSelectorValue(segMan, mover, SELECTOR(b_di));
- bi1 = (int16)readSelectorValue(segMan, mover, SELECTOR(b_i1));
- bi2 = (int16)readSelectorValue(segMan, mover, SELECTOR(b_i2));
- movcnt = readSelectorValue(segMan, mover, SELECTOR(b_movCnt));
- bdelta = (int16)readSelectorValue(segMan, mover, SELECTOR(b_incr));
- axis = (int16)readSelectorValue(segMan, mover, SELECTOR(b_xAxis));
-
- if ((getSciVersion() >= SCI_VERSION_1_LATE)) {
- // Mixed-Up Fairy Tales has no xLast/yLast selectors
- if (SELECTOR(xLast) != -1) {
- // save last position into mover
- writeSelectorValue(segMan, mover, SELECTOR(xLast), x);
- writeSelectorValue(segMan, mover, SELECTOR(yLast), y);
- }
+ if (getSciVersion() >= SCI_VERSION_1_EGA) {
+ uint client_signal = readSelectorValue(segMan, client, SELECTOR(signal));
+ writeSelectorValue(segMan, client, SELECTOR(signal), client_signal & ~kSignalHitObstacle);
+ }
+
+ int16 mover_moveCnt = 1;
+ int16 client_moveSpeed = 0;
+ if (handleMoveCount) {
+ mover_moveCnt = readSelectorValue(segMan, mover, SELECTOR(b_movCnt));
+ client_moveSpeed = readSelectorValue(segMan, client, SELECTOR(moveSpeed));
+ mover_moveCnt++;
}
- //printf("movecnt %d, move speed %d\n", movcnt, max_movcnt);
+ if (client_moveSpeed < mover_moveCnt) {
+ mover_moveCnt = 0;
+ int16 client_x = readSelectorValue(segMan, client, SELECTOR(x));
+ int16 client_y = readSelectorValue(segMan, client, SELECTOR(y));
+ int16 client_org_x = client_x;
+ int16 client_org_y = client_y;
+ int16 mover_x = readSelectorValue(segMan, mover, SELECTOR(x));
+ int16 mover_y = readSelectorValue(segMan, mover, SELECTOR(y));
+ int16 mover_xAxis = readSelectorValue(segMan, mover, SELECTOR(b_xAxis));
+ int16 mover_dx = readSelectorValue(segMan, mover, SELECTOR(dx));
+ int16 mover_dy = readSelectorValue(segMan, mover, SELECTOR(dy));
+ int16 mover_incr = readSelectorValue(segMan, mover, SELECTOR(b_incr));
+ int16 mover_i1 = readSelectorValue(segMan, mover, SELECTOR(b_i1));
+ int16 mover_i2 = readSelectorValue(segMan, mover, SELECTOR(b_i2));
+ int16 mover_di = readSelectorValue(segMan, mover, SELECTOR(b_di));
+ int16 mover_org_i1 = mover_i1;
+ int16 mover_org_i2 = mover_i2;
+ int16 mover_org_di = mover_di;
+
+ if ((getSciVersion() >= SCI_VERSION_1_EGA)) {
+ // save current position into mover
+ writeSelectorValue(segMan, mover, SELECTOR(xLast), client_x);
+ writeSelectorValue(segMan, mover, SELECTOR(yLast), client_y);
+ }
+ // sierra sci saves full client selector variables here
- if (g_sci->_features->handleMoveCount()) {
- if (max_movcnt > movcnt) {
- ++movcnt;
- writeSelectorValue(segMan, mover, SELECTOR(b_movCnt), movcnt); // Needed for HQ1/Ogre?
- return NULL_REG;
+ if (mover_xAxis) {
+ if (ABS(mover_x - client_x) < ABS(mover_dx))
+ completed = true;
} else {
- movcnt = 0;
- writeSelectorValue(segMan, mover, SELECTOR(b_movCnt), movcnt); // Needed for HQ1/Ogre?
+ if (ABS(mover_y - client_y) < ABS(mover_dy))
+ completed = true;
+ }
+ if (completed) {
+ client_x = mover_x;
+ client_y = mover_y;
+ } else {
+ client_x += mover_dx;
+ client_y += mover_dy;
+ if (mover_di < 0) {
+ mover_di += mover_i1;
+ } else {
+ mover_di += mover_i2;
+ if (mover_xAxis == 0) {
+ client_x += mover_incr;
+ } else {
+ client_y += mover_incr;
+ }
+ }
+ }
+ writeSelectorValue(segMan, client, SELECTOR(x), client_x);
+ writeSelectorValue(segMan, client, SELECTOR(y), client_y);
+
+ // Now call client::canBeHere/client::cantBehere to check for collisions
+ bool collision = false;
+ reg_t cantBeHere = NULL_REG;
+
+ if (SELECTOR(cantBeHere) != -1) {
+ // adding this here for hoyle 3 to get happy. CantBeHere is a dummy in hoyle 3 and acc is != 0 so we would
+ // get a collision otherwise
+ s->r_acc = NULL_REG;
+ invokeSelector(s, client, SELECTOR(cantBeHere), argc, argv);
+ if (!s->r_acc.isNull())
+ collision = true;
+ cantBeHere = s->r_acc;
+ } else {
+ invokeSelector(s, client, SELECTOR(canBeHere), argc, argv);
+ if (s->r_acc.isNull())
+ collision = true;
}
- }
- if ((bdi += bi1) > 0) {
- bdi += bi2;
+ if (collision) {
+ // sierra restores full client variables here, seems that restoring x/y is enough
+ writeSelectorValue(segMan, client, SELECTOR(x), client_org_x);
+ writeSelectorValue(segMan, client, SELECTOR(y), client_org_y);
+ mover_i1 = mover_org_i1;
+ mover_i2 = mover_org_i2;
+ mover_di = mover_org_di;
- if (axis == _K_BRESEN_AXIS_X)
- dx += bdelta;
+ uint16 client_signal = readSelectorValue(segMan, client, SELECTOR(signal));
+ writeSelectorValue(segMan, client, SELECTOR(signal), client_signal | kSignalHitObstacle);
+ }
+ writeSelectorValue(segMan, mover, SELECTOR(b_i1), mover_i1);
+ writeSelectorValue(segMan, mover, SELECTOR(b_i2), mover_i2);
+ writeSelectorValue(segMan, mover, SELECTOR(b_di), mover_di);
+
+ if ((getSciVersion() >= SCI_VERSION_1_EGA)) {
+ // this calling code here was right before the last return in
+ // sci1ega and got changed to this position since sci1early
+ // this was an uninitialized issue in sierra sci
+ if ((handleMoveCount) && (getSciVersion() >= SCI_VERSION_1_EARLY))
+ writeSelectorValue(segMan, mover, SELECTOR(b_movCnt), mover_moveCnt);
+ // We need to compare directly in here, complete may have happened during
+ // the current move
+ if ((client_x == mover_x) && (client_y == mover_y))
+ invokeSelector(s, mover, SELECTOR(moveDone), argc, argv);
+ if (getSciVersion() >= SCI_VERSION_1_EARLY)
+ return s->r_acc;
+ }
+ }
+ if (handleMoveCount) {
+ if (getSciVersion() <= SCI_VERSION_1_EGA)
+ writeSelectorValue(segMan, mover, SELECTOR(b_movCnt), mover_moveCnt);
else
- dy += bdelta;
+ writeSelectorValue(segMan, mover, SELECTOR(b_movCnt), client_moveSpeed);
}
+ return s->r_acc;
+}
- writeSelectorValue(segMan, mover, SELECTOR(b_di), bdi);
+extern void kDirLoopWorker(reg_t obj, uint16 angle, EngineState *s, int argc, reg_t *argv);
+extern uint16 kGetAngleWorker(int16 x1, int16 y1, int16 x2, int16 y2);
- x += dx;
- y += dy;
+reg_t kDoAvoider(EngineState *s, int argc, reg_t *argv) {
+ SegManager *segMan = s->_segMan;
+ reg_t avoider = argv[0];
+ int16 timesStep = argc > 1 ? argv[1].toUint16() : 1;
- if ((MOVING_ON_X && (((x < destx) && (oldx >= destx)) // Moving left, exceeded?
- || ((x > destx) && (oldx <= destx)) // Moving right, exceeded?
- || ((x == destx) && (ABS(dx) > ABS(dy))) // Moving fast, reached?
- // Treat this last case specially- when doing sub-pixel movements
- // on the other axis, we could still be far away from the destination
- )) || (MOVING_ON_Y && (((y < desty) && (oldy >= desty)) /* Moving upwards, exceeded? */
- || ((y > desty) && (oldy <= desty)) /* Moving downwards, exceeded? */
- || ((y == desty) && (ABS(dy) >= ABS(dx))) /* Moving fast, reached? */
- ))) {
- // Whew... in short: If we have reached or passed our target position
+ if (!s->_segMan->isHeapObject(avoider)) {
+ error("DoAvoider() where avoider %04x:%04x is not an object", PRINT_REG(avoider));
+ return SIGNAL_REG;
+ }
- x = destx;
- y = desty;
- completed = 1;
+ reg_t client = readSelector(segMan, avoider, SELECTOR(client));
+ reg_t mover = readSelector(segMan, client, SELECTOR(mover));
+ if (mover.isNull())
+ return SIGNAL_REG;
- debugC(2, kDebugLevelBresen, "Finished mover %04x:%04x", PRINT_REG(mover));
- }
+ // call mover::doit
+ invokeSelector(s, mover, SELECTOR(doit), argc, argv);
- writeSelectorValue(segMan, client, SELECTOR(x), x);
- writeSelectorValue(segMan, client, SELECTOR(y), y);
+ // Read mover again
+ mover = readSelector(segMan, client, SELECTOR(mover));
+ if (mover.isNull())
+ return SIGNAL_REG;
- debugC(2, kDebugLevelBresen, "New data: (x,y)=(%d,%d), di=%d", x, y, bdi);
+ int16 clientX = readSelectorValue(segMan, client, SELECTOR(x));
+ int16 clientY = readSelectorValue(segMan, client, SELECTOR(y));
+ int16 moverX = readSelectorValue(segMan, mover, SELECTOR(x));
+ int16 moverY = readSelectorValue(segMan, mover, SELECTOR(y));
+ int16 avoiderHeading = readSelectorValue(segMan, avoider, SELECTOR(heading));
- bool collision = false;
- reg_t cantBeHere = NULL_REG;
+ // call client::isBlocked
+ invokeSelector(s, client, SELECTOR(isBlocked), argc, argv);
- if (SELECTOR(cantBeHere) != -1) {
- // adding this here for hoyle 3 to get happy. CantBeHere is a dummy in hoyle 3 and acc is != 0 so we would
- // get a collision otherwise
- s->r_acc = NULL_REG;
- invokeSelector(s, client, SELECTOR(cantBeHere), argc, argv);
- if (!s->r_acc.isNull())
- collision = true;
- cantBeHere = s->r_acc;
- } else {
- invokeSelector(s, client, SELECTOR(canBeHere), argc, argv);
- if (s->r_acc.isNull())
- collision = true;
- }
+ if (s->r_acc.isNull()) {
+ // not blocked
+ if (avoiderHeading == -1)
+ return SIGNAL_REG;
+ avoiderHeading = -1;
- if (collision) {
- signal = readSelectorValue(segMan, client, SELECTOR(signal));
+ uint16 angle = kGetAngleWorker(clientX, clientY, moverX, moverY);
- writeSelectorValue(segMan, client, SELECTOR(x), oldx);
- writeSelectorValue(segMan, client, SELECTOR(y), oldy);
- writeSelectorValue(segMan, client, SELECTOR(signal), (signal | kSignalHitObstacle));
+ reg_t clientLooper = readSelector(segMan, client, SELECTOR(looper));
+ if (clientLooper.isNull()) {
+ kDirLoopWorker(client, angle, s, argc, argv);
+ } else {
+ // call looper::doit
+ reg_t params[2] = { make_reg(0, angle), client };
+ invokeSelector(s, clientLooper, SELECTOR(doit), argc, argv, 2, params);
+ }
+ s->r_acc = SIGNAL_REG;
+
+ } else {
+ // is blocked
+ if (avoiderHeading == -1)
+ avoiderHeading = g_sci->getRNG().getRandomBit() ? 45 : -45;
+ int16 clientHeading = readSelectorValue(segMan, client, SELECTOR(heading));
+ clientHeading = (clientHeading / 45) * 45;
+
+ int16 clientXstep = readSelectorValue(segMan, client, SELECTOR(xStep)) * timesStep;
+ int16 clientYstep = readSelectorValue(segMan, client, SELECTOR(yStep)) * timesStep;
+ int16 newHeading = clientHeading;
+
+ while (1) {
+ int16 newX = clientX;
+ int16 newY = clientY;
+ switch (newHeading) {
+ case 45:
+ case 90:
+ case 135:
+ newX += clientXstep;
+ break;
+ case 225:
+ case 270:
+ case 315:
+ newX -= clientXstep;
+ }
- debugC(2, kDebugLevelBresen, "Finished mover %04x:%04x by collision", PRINT_REG(mover));
- // We shall not set completed in this case, sierra sci also doesn't do it
- // if we set call .moveDone in those cases qfg1 vga gate at the castle and lsl1 casino door will not work
- }
+ switch (newHeading) {
+ case 0:
+ case 45:
+ case 315:
+ newY -= clientYstep;
+ break;
+ case 135:
+ case 180:
+ case 225:
+ newY += clientYstep;
+ }
+ writeSelectorValue(segMan, client, SELECTOR(x), newX);
+ writeSelectorValue(segMan, client, SELECTOR(y), newY);
- if ((getSciVersion() >= SCI_VERSION_1_EGA))
- if (completed)
- invokeSelector(s, mover, SELECTOR(moveDone), argc, argv);
+ // call client::canBeHere
+ invokeSelector(s, client, SELECTOR(canBeHere), argc, argv);
- if (SELECTOR(cantBeHere) != -1)
- return cantBeHere;
- return make_reg(0, completed);
-}
+ if (!s->r_acc.isNull()) {
+ s->r_acc = make_reg(0, newHeading);
+ break; // break out
+ }
-extern void _k_dirloop(reg_t obj, uint16 angle, EngineState *s, int argc, reg_t *argv);
-
-int getAngle(int xrel, int yrel) {
- if ((xrel == 0) && (yrel == 0))
- return 0;
- else {
- int val = (int)(180.0 / PI * atan2((double)xrel, (double) - yrel));
- if (val < 0)
- val += 360;
-
- // Take care of OB1 differences between SSCI and
- // FSCI. SCI games sometimes check for equality with
- // "round" angles
- if (val % 45 == 44)
- val++;
- else if (val % 45 == 1)
- val--;
-
- return val;
+ newHeading += avoiderHeading;
+ if (newHeading >= 360)
+ newHeading -= 360;
+ if (newHeading < 0)
+ newHeading += 360;
+ if (newHeading == clientHeading) {
+ // tried everything
+ writeSelectorValue(segMan, client, SELECTOR(x), clientX);
+ writeSelectorValue(segMan, client, SELECTOR(y), clientY);
+ s->r_acc = SIGNAL_REG;
+ break; // break out
+ }
+ }
}
-}
+ writeSelectorValue(segMan, avoider, SELECTOR(heading), avoiderHeading);
+ return s->r_acc;
-reg_t kDoAvoider(EngineState *s, int argc, reg_t *argv) {
- SegManager *segMan = s->_segMan;
- reg_t avoider = argv[0];
+#if 0
reg_t client, looper, mover;
int angle;
int dx, dy;
@@ -486,18 +601,18 @@ reg_t kDoAvoider(EngineState *s, int argc, reg_t *argv) {
s->r_acc = make_reg(0, angle);
- reg_t params[2] = { make_reg(0, angle), client };
-
if (looper.segment) {
+ reg_t params[2] = { make_reg(0, angle), client };
invokeSelector(s, looper, SELECTOR(doit), argc, argv, 2, params);
return s->r_acc;
} else {
// No looper? Fall back to DirLoop
- _k_dirloop(client, (uint16)angle, s, argc, argv);
+ kDirLoopWorker(client, (uint16)angle, s, argc, argv);
}
}
return s->r_acc;
+#endif
}
} // End of namespace Sci
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-08 08:05:49 +0000