void TileLoopClearHelper(TileIndex tile)
{
bool self = (IsTileType(tile, MP_CLEAR) && IsClearGround(tile, CLEAR_FIELDS));
bool dirty = false;
bool neighbour = (IsTileType(TILE_ADDXY(tile, 1, 0), MP_CLEAR) && IsClearGround(TILE_ADDXY(tile, 1, 0), CLEAR_FIELDS));
if (GetFenceSW(tile) == 0) {
if (self != neighbour) {
SetFenceSW(tile, 3);
dirty = true;
}
} else {
if (self == 0 && neighbour == 0) {
SetFenceSW(tile, 0);
dirty = true;
}
}
neighbour = (IsTileType(TILE_ADDXY(tile, 0, 1), MP_CLEAR) && IsClearGround(TILE_ADDXY(tile, 0, 1), CLEAR_FIELDS));
if (GetFenceSE(tile) == 0) {
if (self != neighbour) {
SetFenceSE(tile, 3);
dirty = true;
}
} else {
if (self == 0 && neighbour == 0) {
SetFenceSE(tile, 0);
dirty = true;
}
}
if (dirty) MarkTileDirtyByTile(tile);
}
static void UpdateFences(TileIndex tile)
{
assert(IsTileType(tile, MP_CLEAR) && IsClearGround(tile, CLEAR_FIELDS));
bool dirty = false;
bool neighbour = (IsTileType(TILE_ADDXY(tile, 1, 0), MP_CLEAR) && IsClearGround(TILE_ADDXY(tile, 1, 0), CLEAR_FIELDS));
if (!neighbour && GetFenceSW(tile) == 0) {
SetFenceSW(tile, 3);
dirty = true;
}
neighbour = (IsTileType(TILE_ADDXY(tile, 0, 1), MP_CLEAR) && IsClearGround(TILE_ADDXY(tile, 0, 1), CLEAR_FIELDS));
if (!neighbour && GetFenceSE(tile) == 0) {
SetFenceSE(tile, 3);
dirty = true;
}
neighbour = (IsTileType(TILE_ADDXY(tile, -1, 0), MP_CLEAR) && IsClearGround(TILE_ADDXY(tile, -1, 0), CLEAR_FIELDS));
if (!neighbour && GetFenceNE(tile) == 0) {
SetFenceNE(tile, 3);
dirty = true;
}
neighbour = (IsTileType(TILE_ADDXY(tile, 0, -1), MP_CLEAR) && IsClearGround(TILE_ADDXY(tile, 0, -1), CLEAR_FIELDS));
if (!neighbour && GetFenceNW(tile) == 0) {
SetFenceNW(tile, 3);
dirty = true;
}
if (dirty) MarkTileDirtyByTile(tile);
}
void DrawClearLandFence(const TileInfo *ti)
{
bool fence_sw = GetFenceSW(ti->tile) != 0;
bool fence_se = GetFenceSE(ti->tile) != 0;
if (!fence_sw && !fence_se) return;
int z = GetSlopeZInCorner(ti->tileh, CORNER_S);
if (fence_sw) {
DrawGroundSpriteAt(_clear_land_fence_sprites[GetFenceSW(ti->tile) - 1] + _fence_mod_by_tileh_sw[ti->tileh], PAL_NONE, 0, 0, z);
}
if (fence_se) {
DrawGroundSpriteAt(_clear_land_fence_sprites[GetFenceSE(ti->tile) - 1] + _fence_mod_by_tileh_se[ti->tileh], PAL_NONE, 0, 0, z);
}
}
static void DrawClearLandFence(const TileInfo *ti)
{
/* combine fences into one sprite object */
StartSpriteCombine();
int maxz = GetSlopeMaxPixelZ(ti->tileh);
bool fence_nw = GetFenceNW(ti->tile) != 0;
if (fence_nw) {
int z = GetSlopePixelZInCorner(ti->tileh, CORNER_W);
SpriteID sprite = _clear_land_fence_sprites[GetFenceNW(ti->tile) - 1] + _fence_mod_by_tileh_nw[ti->tileh];
AddSortableSpriteToDraw(sprite, PAL_NONE, ti->x, ti->y - 15, 16, 31, maxz - z + 4, ti->z + z, false, 0, 15, -z);
}
bool fence_ne = GetFenceNE(ti->tile) != 0;
if (fence_ne) {
int z = GetSlopePixelZInCorner(ti->tileh, CORNER_E);
SpriteID sprite = _clear_land_fence_sprites[GetFenceNE(ti->tile) - 1] + _fence_mod_by_tileh_ne[ti->tileh];
AddSortableSpriteToDraw(sprite, PAL_NONE, ti->x - 15, ti->y, 31, 16, maxz - z + 4, ti->z + z, false, 15, 0, -z);
}
bool fence_sw = GetFenceSW(ti->tile) != 0;
bool fence_se = GetFenceSE(ti->tile) != 0;
if (fence_sw || fence_se) {
int z = GetSlopePixelZInCorner(ti->tileh, CORNER_S);
if (fence_sw) {
SpriteID sprite = _clear_land_fence_sprites[GetFenceSW(ti->tile) - 1] + _fence_mod_by_tileh_sw[ti->tileh];
AddSortableSpriteToDraw(sprite, PAL_NONE, ti->x, ti->y, 16, 16, maxz - z + 4, ti->z + z, false, 0, 0, -z);
}
if (fence_se) {
SpriteID sprite = _clear_land_fence_sprites[GetFenceSE(ti->tile) - 1] + _fence_mod_by_tileh_se[ti->tileh];
AddSortableSpriteToDraw(sprite, PAL_NONE, ti->x, ti->y, 16, 16, maxz - z + 4, ti->z + z, false, 0, 0, -z);
}
}
EndSpriteCombine();
}