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-rw-r--r--src/functions.h1
-rw-r--r--src/gfx.cpp33
-rw-r--r--src/gfx.h10
-rw-r--r--src/viewport.cpp71
-rw-r--r--src/viewport.h8
5 files changed, 96 insertions, 27 deletions
diff --git a/src/functions.h b/src/functions.h
index c3e7a3a70..8ab4af5a1 100644
--- a/src/functions.h
+++ b/src/functions.h
@@ -132,7 +132,6 @@ bool ScrollWindowTo(int x, int y, Window *w, bool instant = false);
bool ScrollMainWindowToTile(TileIndex tile, bool instant = false);
bool ScrollMainWindowTo(int x, int y, bool instant = false);
-void DrawSprite(SpriteID img, SpriteID pal, int x, int y);
bool EnsureNoVehicle(TileIndex tile);
bool EnsureNoVehicleOnGround(TileIndex tile);
diff --git a/src/gfx.cpp b/src/gfx.cpp
index 38db85184..b0802842c 100644
--- a/src/gfx.cpp
+++ b/src/gfx.cpp
@@ -43,7 +43,7 @@ int _pal_count_dirty;
Colour _cur_palette[256];
byte _stringwidth_table[FS_END][224];
-static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode);
+static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL);
FontSize _cur_fontsize;
static FontSize _last_fontsize;
@@ -652,24 +652,33 @@ int DoDrawStringTruncated(const char *str, int x, int y, uint16 color, uint maxw
return DoDrawString(buffer, x, y, color);
}
-void DrawSprite(SpriteID img, SpriteID pal, int x, int y)
+void DrawSprite(SpriteID img, SpriteID pal, int x, int y, const SubSprite *sub)
{
if (HASBIT(img, PALETTE_MODIFIER_TRANSPARENT)) {
_color_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH)) + 1;
- GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH)), x, y, BM_TRANSPARENT);
+ GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH)), x, y, BM_TRANSPARENT, sub);
} else if (pal != PAL_NONE) {
_color_remap_ptr = GetNonSprite(GB(pal, 0, PALETTE_WIDTH)) + 1;
- GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH)), x, y, BM_COLOUR_REMAP);
+ GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH)), x, y, BM_COLOUR_REMAP, sub);
} else {
- GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH)), x, y, BM_NORMAL);
+ GfxMainBlitter(GetSprite(GB(img, 0, SPRITE_WIDTH)), x, y, BM_NORMAL, sub);
}
}
-static inline void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode)
+static inline void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub)
{
const DrawPixelInfo *dpi = _cur_dpi;
Blitter::BlitterParams bp;
+ /* Amount of pixels to clip from the source sprite */
+ int clip_left = (sub != NULL ? max(0, -sprite->x_offs + sub->left ) : 0);
+ int clip_top = (sub != NULL ? max(0, -sprite->y_offs + sub->top ) : 0);
+ int clip_right = (sub != NULL ? max(0, sprite->width - (-sprite->x_offs + sub->right + 1)) : 0);
+ int clip_bottom = (sub != NULL ? max(0, sprite->height - (-sprite->y_offs + sub->bottom + 1)) : 0);
+
+ if (clip_left + clip_right >= sprite->width) return;
+ if (clip_top + clip_bottom >= sprite->height) return;
+
/* Move to the correct offset */
x += sprite->x_offs;
y += sprite->y_offs;
@@ -678,12 +687,16 @@ static inline void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMod
bp.sprite = sprite->data;
bp.sprite_width = sprite->width;
bp.sprite_height = sprite->height;
- bp.width = UnScaleByZoom(sprite->width, dpi->zoom);
- bp.height = UnScaleByZoom(sprite->height, dpi->zoom);
+ bp.width = UnScaleByZoom(sprite->width - clip_left - clip_right, dpi->zoom);
+ bp.height = UnScaleByZoom(sprite->height - clip_top - clip_bottom, dpi->zoom);
bp.top = 0;
bp.left = 0;
- bp.skip_left = 0;
- bp.skip_top = 0;
+ bp.skip_left = UnScaleByZoom(clip_left, dpi->zoom);
+ bp.skip_top = UnScaleByZoom(clip_top, dpi->zoom);
+
+ x += ScaleByZoom(bp.skip_left, dpi->zoom);
+ y += ScaleByZoom(bp.skip_top, dpi->zoom);
+
bp.dst = dpi->dst_ptr;
bp.pitch = dpi->pitch;
bp.remap = _color_remap_ptr;
diff --git a/src/gfx.h b/src/gfx.h
index 38d4b3052..57c536747 100644
--- a/src/gfx.h
+++ b/src/gfx.h
@@ -242,6 +242,16 @@ DECLARE_POSTFIX_INCREMENT(FontSize);
void RedrawScreenRect(int left, int top, int right, int bottom);
void GfxScroll(int left, int top, int width, int height, int xo, int yo);
+/**
+ * Used to only draw a part of the sprite.
+ * Draw the subsprite in the rect (sprite_x_offset + left, sprite_y_offset + top) to (sprite_x_offset + right, sprite_y_offset + bottom).
+ * Both corners are included in the drawing area.
+ */
+struct SubSprite {
+ int left, top, right, bottom;
+};
+
+void DrawSprite(SpriteID img, SpriteID pal, int x, int y, const SubSprite *sub = NULL);
/* XXX doesn't really belong here, but the only
* consumers always use it in conjunction with DoDrawString() */
diff --git a/src/viewport.cpp b/src/viewport.cpp
index 9c9790a3c..4c7906270 100644
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -66,6 +66,7 @@ struct StringSpriteToDraw {
struct TileSpriteToDraw {
SpriteID image;
SpriteID pal;
+ const SubSprite *sub; ///< only draw a rectangular part of the sprite
TileSpriteToDraw *next;
int32 x;
int32 y;
@@ -75,6 +76,7 @@ struct TileSpriteToDraw {
struct ChildScreenSpriteToDraw {
SpriteID image;
SpriteID pal;
+ const SubSprite *sub; ///< only draw a rectangular part of the sprite
int32 x;
int32 y;
ChildScreenSpriteToDraw *next;
@@ -83,6 +85,7 @@ struct ChildScreenSpriteToDraw {
struct ParentSpriteToDraw {
SpriteID image; ///< sprite to draw
SpriteID pal; ///< palette to use
+ const SubSprite *sub; ///< only draw a rectangular part of the sprite
int32 x; ///< screen X coordinate of sprite
int32 y; ///< screen Y coordinate of sprite
@@ -428,7 +431,18 @@ void HandleZoomMessage(Window *w, const ViewPort *vp, byte widget_zoom_in, byte
InvalidateWidget(w, widget_zoom_out);
}
-void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z)
+/**
+ * Draws a ground sprite at a specific world-coordinate.
+ *
+ * @param image the image to draw.
+ * @param pal the provided palette.
+ * @param x position x of the sprite.
+ * @param y position y of the sprite.
+ * @param z position z of the sprite.
+ * @param sub Only draw a part of the sprite.
+ *
+ */
+void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z, const SubSprite *sub)
{
ViewportDrawer *vd = _cur_vd;
TileSpriteToDraw *ts;
@@ -445,6 +459,7 @@ void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z)
ts->image = image;
ts->pal = pal;
+ ts->sub = sub;
ts->next = NULL;
ts->x = x;
ts->y = y;
@@ -453,14 +468,22 @@ void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z)
vd->last_tile = &ts->next;
}
-void DrawGroundSprite(SpriteID image, SpriteID pal)
+/**
+ * Draws a ground sprite for the current tile.
+ * If the current tile is drawn on top of a foundation the sprite is added as child sprite to the "foundation"-ParentSprite.
+ *
+ * @param image the image to draw.
+ * @param pal the provided palette.
+ * @param sub Only draw a part of the sprite.
+ */
+void DrawGroundSprite(SpriteID image, SpriteID pal, const SubSprite *sub)
{
if (_offset_ground_sprites) {
/* offset ground sprite because of foundation? */
- AddChildSpriteScreen(image, pal, _cur_vd->offs_x, _cur_vd->offs_y);
+ AddChildSpriteScreen(image, pal, _cur_vd->offs_x, _cur_vd->offs_y, false, sub);
} else {
_added_tile_sprite = true;
- DrawGroundSpriteAt(image, pal, _cur_ti->x, _cur_ti->y, _cur_ti->z);
+ DrawGroundSpriteAt(image, pal, _cur_ti->x, _cur_ti->y, _cur_ti->z, sub);
}
}
@@ -472,7 +495,18 @@ void OffsetGroundSprite(int x, int y)
_offset_ground_sprites = true;
}
-static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z)
+/**
+ * Adds a child sprite to a parent sprite.
+ * In contrast to "AddChildSpriteScreen()" the sprite position is in world coordinates
+ *
+ * @param image the image to draw.
+ * @param pal the provided palette.
+ * @param x position x of the sprite.
+ * @param y position y of the sprite.
+ * @param z position z of the sprite.
+ * @param sub Only draw a part of the sprite.
+ */
+static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z, const SubSprite *sub)
{
const ViewportDrawer *vd = _cur_vd;
Point pt = RemapCoords(x, y, z);
@@ -484,7 +518,7 @@ static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z
pt.y + spr->y_offs + spr->height <= vd->dpi.top)
return;
- AddChildSpriteScreen(image, pal, pt.x - vd->parent_list[-1]->left, pt.y - vd->parent_list[-1]->top);
+ AddChildSpriteScreen(image, pal, pt.x - vd->parent_list[-1]->left, pt.y - vd->parent_list[-1]->top, false, sub);
}
/** Draw a (transparent) sprite at given coordinates with a given bounding box.
@@ -509,8 +543,9 @@ static void AddCombinedSprite(SpriteID image, SpriteID pal, int x, int y, byte z
* @param bb_offset_x bounding box extent towards negative X (world),
* @param bb_offset_y bounding box extent towards negative Y (world),
* @param bb_offset_z bounding box extent towards negative Z (world)
+ * @param sub Only draw a part of the sprite.
*/
-void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z)
+void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, int h, int dz, int z, bool transparent, int bb_offset_x, int bb_offset_y, int bb_offset_z, const SubSprite *sub)
{
ViewportDrawer *vd = _cur_vd;
ParentSpriteToDraw *ps;
@@ -526,7 +561,7 @@ void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w,
}
if (vd->combine_sprites == 2) {
- AddCombinedSprite(image, pal, x, y, z);
+ AddCombinedSprite(image, pal, x, y, z, sub);
return;
}
@@ -585,6 +620,7 @@ void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w,
ps->image = image;
ps->pal = pal;
+ ps->sub = sub;
ps->xmin = x + bb_offset_x;
ps->xmax = x + max(bb_offset_x, w) - 1;
@@ -613,7 +649,17 @@ void EndSpriteCombine()
_cur_vd->combine_sprites = 0;
}
-void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool transparent)
+/**
+ * Add a child sprite to a parent sprite.
+ *
+ * @param image the image to draw.
+ * @param pal the provided palette.
+ * @param x sprite x-offset (screen coordinates) relative to parent sprite.
+ * @param y sprite y-offset (screen coordinates) relative to parent sprite.
+ * @param transparent if true, switch the palette between the provided palette and the transparent palette,
+ * @param sub Only draw a part of the sprite.
+ */
+void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool transparent, const SubSprite *sub)
{
ViewportDrawer *vd = _cur_vd;
ChildScreenSpriteToDraw *cs;
@@ -642,6 +688,7 @@ void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool trans
cs->image = image;
cs->pal = pal;
+ cs->sub = sub;
cs->x = x;
cs->y = y;
cs->next = NULL;
@@ -1179,7 +1226,7 @@ static void ViewportDrawTileSprites(TileSpriteToDraw *ts)
{
do {
Point pt = RemapCoords(ts->x, ts->y, ts->z);
- DrawSprite(ts->image, ts->pal, pt.x, pt.y);
+ DrawSprite(ts->image, ts->pal, pt.x, pt.y, ts->sub);
ts = ts->next;
} while (ts != NULL);
}
@@ -1250,10 +1297,10 @@ static void ViewportDrawParentSprites(ParentSpriteToDraw *psd[])
const ParentSpriteToDraw* ps = *psd;
const ChildScreenSpriteToDraw* cs;
- if (ps->image != SPR_EMPTY_BOUNDING_BOX) DrawSprite(ps->image, ps->pal, ps->x, ps->y);
+ if (ps->image != SPR_EMPTY_BOUNDING_BOX) DrawSprite(ps->image, ps->pal, ps->x, ps->y, ps->sub);
for (cs = ps->child; cs != NULL; cs = cs->next) {
- DrawSprite(cs->image, cs->pal, ps->left + cs->x, ps->top + cs->y);
+ DrawSprite(cs->image, cs->pal, ps->left + cs->x, ps->top + cs->y, cs->sub);
}
}
}
diff --git a/src/viewport.h b/src/viewport.h
index 869bbee1a..2f4e83d62 100644
--- a/src/viewport.h
+++ b/src/viewport.h
@@ -57,11 +57,11 @@ enum {
void OffsetGroundSprite(int x, int y);
-void DrawGroundSprite(SpriteID image, SpriteID pal);
-void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z);
-void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, int h, int dz, int z, bool transparent = false, int bb_offset_x = 0, int bb_offset_y = 0, int bb_offset_z = 0);
+void DrawGroundSprite(SpriteID image, SpriteID pal, const SubSprite *sub = NULL);
+void DrawGroundSpriteAt(SpriteID image, SpriteID pal, int32 x, int32 y, byte z, const SubSprite *sub = NULL);
+void AddSortableSpriteToDraw(SpriteID image, SpriteID pal, int x, int y, int w, int h, int dz, int z, bool transparent = false, int bb_offset_x = 0, int bb_offset_y = 0, int bb_offset_z = 0, const SubSprite *sub = NULL);
void *AddStringToDraw(int x, int y, StringID string, uint64 params_1, uint64 params_2);
-void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool transparent = false);
+void AddChildSpriteScreen(SpriteID image, SpriteID pal, int x, int y, bool transparent = false, const SubSprite *sub = NULL);
void StartSpriteCombine();
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-07-16 06:30:16 +0000