/* Will return false when we've hit the edge of the grid */
static bool getTileHeightCallback(Vector2i pos, int32_t dist, void *data)
{
HeightCallbackHelp_t *help = (HeightCallbackHelp_t *)data;
#ifdef TEST_RAY
Vector3i effect;
#endif
/* Are we still on the grid? */
if (clipXY(pos.x, pos.y))
{
bool HasTallStructure = blockTile(map_coord(pos.x), map_coord(pos.y), AUX_MAP) & AIR_BLOCKED;
if (dist > TILE_UNITS || HasTallStructure)
{
// Only do it the current tile is > TILE_UNITS away from the starting tile. Or..
// there is a tall structure on the current tile and the current tile is not the starting tile.
/* Get height at this intersection point */
int height = map_Height(pos.x, pos.y), heightDiff;
uint16_t newPitch;
if (HasTallStructure)
{
height += TALLOBJECT_ADJUST;
}
if (height <= help->height)
{
heightDiff = 0;
}
else
{
heightDiff = height - help->height;
}
/* Work out the angle to this point from start point */
newPitch = iAtan2(heightDiff, dist);
/* Is this the steepest we've found? */
if (angleDelta(newPitch - help->pitch) > 0)
{
/* Yes, then keep a record of it */
help->pitch = newPitch;
}
//---
#ifdef TEST_RAY
effect.x = pos.x;
effect.y = height;
effect.z = pos.y;
addEffect(&effect, EFFECT_EXPLOSION, EXPLOSION_TYPE_SMALL, false, NULL, 0);
#endif
}
/* Not at edge yet - so exit */
return true;
}
/* We've hit edge of grid - so exit!! */
return false;
}
// Check if the map tile at a location blocks a droid
bool fpathBaseBlockingTile(SDWORD x, SDWORD y, PROPULSION_TYPE propulsion, int mapIndex, FPATH_MOVETYPE moveType)
{
/* All tiles outside of the map and on map border are blocking. */
if (x < 1 || y < 1 || x > mapWidth - 1 || y > mapHeight - 1)
{
return true;
}
/* Check scroll limits (used in campaign to partition the map. */
if (propulsion != PROPULSION_TYPE_LIFT && (x < scrollMinX + 1 || y < scrollMinY + 1 || x >= scrollMaxX - 1 || y >= scrollMaxY - 1))
{
// coords off map - auto blocking tile
return true;
}
unsigned aux = auxTile(x, y, mapIndex);
int auxMask = 0;
switch (moveType)
{
case FMT_MOVE: auxMask = AUXBITS_NONPASSABLE; break; // do not wish to shoot our way through enemy buildings, but want to go through friendly gates (without shooting them)
case FMT_ATTACK: auxMask = AUXBITS_OUR_BUILDING; break; // move blocked by friendly building, assuming we do not want to shoot it up en route
case FMT_BLOCK: auxMask = AUXBITS_BLOCKING; break; // Do not wish to tunnel through closed gates or buildings.
}
unsigned unitbits = prop2bits(propulsion); // TODO - cache prop2bits to psDroid, and pass in instead of propulsion type
if ((unitbits & FEATURE_BLOCKED) != 0 && (aux & auxMask) != 0)
{
return true; // move blocked by building, and we cannot or do not want to shoot our way through anything
}
// the MAX hack below is because blockTile() range does not include player-specific versions...
return (blockTile(x, y, MAX(0, mapIndex - MAX_PLAYERS)) & unitbits) != 0; // finally check if move is blocked by propulsion related factors
}
// Check if the map tile at a location blocks a droid
BOOL fpathBaseBlockingTile(SDWORD x, SDWORD y, PROPULSION_TYPE propulsion, int mapIndex, FPATH_MOVETYPE moveType)
{
uint8_t aux, unitbits = prop2bits(propulsion); // TODO - cache prop2bits to psDroid, and pass in instead of propulsion type
/* All tiles outside of the map and on map border are blocking. */
if (x < 1 || y < 1 || x > mapWidth - 1 || y > mapHeight - 1)
{
return true;
}
/* Check scroll limits (used in campaign to partition the map. */
if (propulsion != PROPULSION_TYPE_LIFT && (x < scrollMinX + 1 || y < scrollMinY + 1 || x >= scrollMaxX - 1 || y >= scrollMaxY - 1))
{
// coords off map - auto blocking tile
return true;
}
aux = auxTile(x, y, mapIndex);
if ((unitbits & FEATURE_BLOCKED)
&& ((moveType == FMT_MOVE && (aux & AUXBITS_ANY_BUILDING)) // do not wish to shoot our way through enemy buildings
|| (aux & AUXBITS_OUR_BUILDING))) // move blocked by friendly building, assuming we do not want to shoot it up en route
{
return true; // move blocked by building, and we cannot or do not want to shoot our way through anything
}
// the MAX hack below is because blockTile() range does not include player-specific versions...
return (blockTile(x, y, MAX(0, mapIndex - MAX_PLAYERS)) & unitbits); // finally check if move is blocked by propulsion related factors
}
