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(svn r5368) -Backport: 5351, 5352 

-Fix: Several graphical glitches at adjacent tiles with foundations. Some borders were missing, some were superfluous
-Fix: Return accurate slope information for tunnels and bridges to fix several foundation graphics glitches
This commit is contained in:
tron 2006-06-26 15:00:23 +00:00
parent 339160760b
commit a2fc417d86
2 changed files with 64 additions and 21 deletions
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58
landscape.c
View File

@ -184,34 +184,54 @@ uint GetSlopeZ(int x, int y)
return _tile_type_procs[ti.type]->get_slope_z_proc(&ti);
}
// direction=true: check for foundation in east and south corner
// direction=false: check for foundation in west and south corner
static bool hasFoundation(const TileInfo* ti, bool direction)
static Slope GetFoundationSlope(TileIndex tile, uint* z)
{
bool south, other; // southern corner and east/west corner
uint slope = _tile_type_procs[ti->type]->get_slope_tileh_proc(ti);
uint tileh = ti->tileh;
TileInfo ti;
Slope tileh;
Slope slope;
if (slope == 0 && slope != tileh) tileh = 15;
south = (tileh & 2) != (slope & 2);
FindLandscapeHeightByTile(&ti, tile);
tileh = ti.tileh;
slope = _tile_type_procs[GetTileType(tile)]->get_slope_tileh_proc(&ti);
if (direction) {
other = (tileh & 4) != (slope & 4);
} else {
other = (tileh & 1) != (slope & 1);
}
return south || other;
// Flatter slope -> higher base height
if (slope < tileh) *z += TILE_HEIGHT;
return slope;
}
static bool HasFoundationNW(TileIndex tile, Slope slope_here, uint z_here)
{
uint z;
Slope slope = GetFoundationSlope(TILE_ADDXY(tile, 0, -1), &z);
return
(z_here + (slope_here & SLOPE_N ? TILE_HEIGHT : 0) > z + (slope & SLOPE_E ? TILE_HEIGHT : 0)) ||
(z_here + (slope_here & SLOPE_W ? TILE_HEIGHT : 0) > z + (slope & SLOPE_S ? TILE_HEIGHT : 0));
}
static bool HasFoundationNE(TileIndex tile, Slope slope_here, uint z_here)
{
uint z;
Slope slope = GetFoundationSlope(TILE_ADDXY(tile, -1, 0), &z);
return
(z_here + (slope_here & SLOPE_N ? TILE_HEIGHT : 0) > z + (slope & SLOPE_W ? TILE_HEIGHT : 0)) ||
(z_here + (slope_here & SLOPE_E ? TILE_HEIGHT : 0) > z + (slope & SLOPE_S ? TILE_HEIGHT : 0));
}
void DrawFoundation(TileInfo *ti, uint f)
{
uint32 sprite_base = SPR_SLOPES_BASE-14;
Slope slope;
uint z;
TileInfo ti2;
FindLandscapeHeight(&ti2, ti->x, ti->y - 1);
if (hasFoundation(&ti2, true)) sprite_base += 22; // foundation in NW direction
FindLandscapeHeight(&ti2, ti->x - 1, ti->y);
if (hasFoundation(&ti2, false)) sprite_base += 22 * 2; // foundation in NE direction
slope = GetFoundationSlope(ti->tile, &z);
if (!HasFoundationNW(ti->tile, slope, z)) sprite_base += 22;
if (!HasFoundationNE(ti->tile, slope, z)) sprite_base += 44;
if (f < 15) {
// leveled foundation

27
tunnelbridge_cmd.c
View File

@ -1277,8 +1277,31 @@ static uint GetSlopeZ_TunnelBridge(const TileInfo* ti)
static uint GetSlopeTileh_TunnelBridge(const TileInfo* ti)
{
// not accurate, but good enough for slope graphics drawing
return 0;
TileIndex tile = ti->tile;
Slope tileh = ti->tileh;
uint f;
if (IsTunnel(tile)) {
return tileh;
} else {
if (IsBridgeRamp(tile)) {
if (HASBIT(BRIDGE_NO_FOUNDATION, tileh)) {
return tileh;
} else {
f = GetBridgeFoundation(tileh, DiagDirToAxis(GetBridgeRampDirection(tile)));
}
} else {
if (IsTransportUnderBridge(tile)) {
f = _bridge_foundations[GetBridgeAxis(tile)][tileh];
} else {
return tileh;
}
}
}
if (f == 0) return tileh;
if (f < 15) return SLOPE_FLAT;
return _inclined_tileh[f - 15];
}