mirrors
/
OpenTTD
mirror of https://github.com/OpenTTD/OpenTTD.git
2
0
Fork 0
Code Issues Projects Releases Wiki Activity

(svn r27148) -Fix: Rounding and unit-conversion inconsistencies in calls to MarkAllViewportsDirty.

This commit is contained in:
frosch 2015-02-14 12:53:07 +00:00
parent 1cf09f804b
commit 2e1be6081d
4 changed files with 60 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/tile_map.h
View File

@ -66,6 +66,19 @@ static inline uint TilePixelHeight(TileIndex tile)
return TileHeight(tile) * TILE_HEIGHT;
}
/**
* Returns the tile height for a coordinate outside map. Such a height is
* needed for painting the area outside map using completely black tiles.
* The idea is descending to heightlevel 0 as fast as possible.
* @param x The X-coordinate (same unit as TileX).
* @param y The Y-coordinate (same unit as TileY).
* @return The height in pixels in the same unit as TilePixelHeight.
*/
static inline uint TilePixelHeightOutsideMap(int x, int y)
{
return TileHeightOutsideMap(x, y) * TILE_HEIGHT;
}
/**
* Get the tiletype of a given tile.
*

10
src/tile_type.h
View File

@ -12,10 +12,12 @@
#ifndef TILE_TYPE_H
#define TILE_TYPE_H
static const uint TILE_SIZE = 16; ///< Tiles are 16x16 "units" in size
static const uint TILE_UNIT_MASK = TILE_SIZE - 1; ///< For masking in/out the inner-tile units.
static const uint TILE_PIXELS = 32; ///< a tile is 32x32 pixels
static const uint TILE_HEIGHT = 8; ///< The standard height-difference between tiles on two levels is 8 (z-diff 8)
static const uint TILE_SIZE = 16; ///< Tile size in world coordinates.
static const uint TILE_UNIT_MASK = TILE_SIZE - 1; ///< For masking in/out the inner-tile world coordinate units.
static const uint TILE_PIXELS = 32; ///< Pixel distance between tile columns/rows in #ZOOM_LVL_BASE.
static const uint TILE_HEIGHT = 8; ///< Height of a height level in world coordinate AND in pixels in #ZOOM_LVL_BASE.
static const uint MAX_BUILDING_PIXELS = 200; ///< Maximum height of a building in pixels in #ZOOM_LVL_BASE. (Also applies to "bridge buildings" on the bridge floor.)
static const uint MAX_TILE_HEIGHT = 255; ///< Maximum allowed tile height

11
src/vehicle.cpp
View File

@ -1497,11 +1497,10 @@ void Vehicle::UpdateViewport(bool dirty)
this->MarkAllViewportsDirty();
} else {
::MarkAllViewportsDirty(
min(old_coord.left, this->coord.left),
min(old_coord.top, this->coord.top),
max(old_coord.right, this->coord.right) + 1 * ZOOM_LVL_BASE,
max(old_coord.bottom, this->coord.bottom) + 1 * ZOOM_LVL_BASE
);
min(old_coord.left, this->coord.left),
min(old_coord.top, this->coord.top),
max(old_coord.right, this->coord.right),
max(old_coord.bottom, this->coord.bottom));
}
}
}
@ -1520,7 +1519,7 @@ void Vehicle::UpdatePositionAndViewport()
*/
void Vehicle::MarkAllViewportsDirty() const
{
::MarkAllViewportsDirty(this->coord.left, this->coord.top, this->coord.right + 1 * ZOOM_LVL_BASE, this->coord.bottom + 1 * ZOOM_LVL_BASE);
::MarkAllViewportsDirty(this->coord.left, this->coord.top, this->coord.right, this->coord.bottom);
}
/**

61
src/viewport.cpp
View File

@ -100,6 +100,12 @@
Point _tile_fract_coords;
static const int MAX_TILE_EXTENT_LEFT = ZOOM_LVL_BASE * TILE_PIXELS; ///< Maximum left extent of tile relative to north corner.
static const int MAX_TILE_EXTENT_RIGHT = ZOOM_LVL_BASE * TILE_PIXELS; ///< Maximum right extent of tile relative to north corner.
static const int MAX_TILE_EXTENT_TOP = ZOOM_LVL_BASE * MAX_BUILDING_PIXELS; ///< Maximum top extent of tile relative to north corner (not considering bridges).
static const int MAX_TILE_EXTENT_BOTTOM = ZOOM_LVL_BASE * (TILE_PIXELS + 2 * TILE_HEIGHT); ///< Maximum bottom extent of tile relative to north corner (worst case: #SLOPE_STEEP_N).
struct StringSpriteToDraw {
StringID string;
Colours colour;
@ -2163,6 +2169,10 @@ void UpdateViewportPosition(Window *w)
*/
static void MarkViewportDirty(const ViewPort *vp, int left, int top, int right, int bottom)
{
/* Rounding wrt. zoom-out level */
right += (1 << vp->zoom) - 1;
bottom += (1 << vp->zoom) - 1;
right -= vp->virtual_left;
if (right <= 0) return;
@ -2187,10 +2197,10 @@ static void MarkViewportDirty(const ViewPort *vp, int left, int top, int right,
/**
* Mark all viewports that display an area as dirty (in need of repaint).
* @param left Left edge of area to repaint
* @param top Top edge of area to repaint
* @param right Right edge of area to repaint
* @param bottom Bottom edge of area to repaint
* @param left Left edge of area to repaint. (viewport coordinates, that is wrt. #ZOOM_LVL_NORMAL)
* @param top Top edge of area to repaint. (viewport coordinates, that is wrt. #ZOOM_LVL_NORMAL)
* @param right Right edge of area to repaint. (viewport coordinates, that is wrt. #ZOOM_LVL_NORMAL)
* @param bottom Bottom edge of area to repaint. (viewport coordinates, that is wrt. #ZOOM_LVL_NORMAL)
* @ingroup dirty
*/
void MarkAllViewportsDirty(int left, int top, int right, int bottom)
@ -2226,27 +2236,28 @@ void ConstrainAllViewportsZoom()
*/
void MarkTileDirtyByTile(TileIndex tile)
{
Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, GetTilePixelZ(tile));
Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, TilePixelHeight(tile));
MarkAllViewportsDirty(
pt.x - 31 * ZOOM_LVL_BASE,
pt.y - 122 * ZOOM_LVL_BASE,
pt.x - 31 * ZOOM_LVL_BASE + 67 * ZOOM_LVL_BASE,
pt.y - 122 * ZOOM_LVL_BASE + 154 * ZOOM_LVL_BASE
);
pt.x - MAX_TILE_EXTENT_LEFT,
pt.y - MAX_TILE_EXTENT_TOP,
pt.x + MAX_TILE_EXTENT_RIGHT,
pt.y + MAX_TILE_EXTENT_BOTTOM);
}
/**
* Mark a (virtual) tile outside the map dirty for repaint.
* @param x Tile X position.
* @param y Tile Y position.
* @ingroup dirty
*/
void MarkTileDirtyByTileOutsideMap(int x, int y)
{
Point pt = RemapCoords(x * TILE_SIZE, y * TILE_SIZE, GetTilePixelZOutsideMap(x, y));
/* Since tiles painted outside the map don't contain buildings, trees, etc.,
* this reduced area for repainting should suffice. If not, adjust the offsets
* used below. */
Point pt = RemapCoords(x * TILE_SIZE, y * TILE_SIZE, TilePixelHeightOutsideMap(x, y));
MarkAllViewportsDirty(
pt.x - TILE_SIZE + 1,
pt.y,
pt.x + TILE_SIZE - 1,
pt.y + TILE_SIZE + TILE_HEIGHT - 1
);
pt.x - MAX_TILE_EXTENT_LEFT,
pt.y, // no buildings outside of map
pt.x + MAX_TILE_EXTENT_RIGHT,
pt.y + MAX_TILE_EXTENT_BOTTOM);
}
/**
@ -2322,15 +2333,15 @@ static void SetSelectionTilesDirty()
/* the 'x' coordinate of 'top' and 'bot' is the same (and always in the same distance from tile middle),
* tile height/slope affects only the 'y' on-screen coordinate! */
int l = top.x - (TILE_PIXELS - 2) * ZOOM_LVL_BASE; // 'x' coordinate of left side of dirty rectangle
int t = top.y; // 'y' coordinate of top side -//-
int r = top.x + (TILE_PIXELS - 2) * ZOOM_LVL_BASE; // right side of dirty rectangle
int b = bot.y; // bottom -//-
int l = top.x - TILE_PIXELS * ZOOM_LVL_BASE; // 'x' coordinate of left side of the dirty rectangle
int t = top.y; // 'y' coordinate of top side of the dirty rectangle
int r = top.x + TILE_PIXELS * ZOOM_LVL_BASE; // 'x' coordinate of right side of the dirty rectangle
int b = bot.y; // 'y' coordinate of bottom side of the dirty rectangle
static const int OVERLAY_WIDTH = 4 * ZOOM_LVL_BASE; // part of selection sprites is drawn outside the selected area
static const int OVERLAY_WIDTH = 4 * ZOOM_LVL_BASE; // part of selection sprites is drawn outside the selected area (in particular: terraforming)
/* For halftile foundations on SLOPE_STEEP_S the sprite extents some more towards the top */
MarkAllViewportsDirty(l - OVERLAY_WIDTH, t - OVERLAY_WIDTH - TILE_HEIGHT * ZOOM_LVL_BASE, r + OVERLAY_WIDTH, b + OVERLAY_WIDTH * ZOOM_LVL_BASE);
MarkAllViewportsDirty(l - OVERLAY_WIDTH, t - OVERLAY_WIDTH - TILE_HEIGHT * ZOOM_LVL_BASE, r + OVERLAY_WIDTH, b + OVERLAY_WIDTH);
/* haven't we reached the topmost tile yet? */
if (top_x != x_start) {