1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file sprite.cpp Handling of sprites */
#include "stdafx.h"
#include "sprite.h"
#include "viewport_func.h"
#include "landscape.h"
#include "spritecache.h"
#include "core/alloc_func.hpp"
#include "core/mem_func.hpp"
/**
* Draws a tile sprite sequence.
* @param ti The tile to draw on
* @param dts Sprite and subsprites to draw
* @param to The transparancy bit that toggles drawing of these sprites
* @param orig_offset Sprite-Offset for original sprites
* @param newgrf_offset Sprite-Offset for NewGRF defined sprites
* @param default_palette The default recolour sprite to use (typically company colour)
* @param child_offset_is_unsigned Whether child sprite offsets are interpreted signed or unsigned
*/
void DrawCommonTileSeq(const TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned)
{
bool parent_sprite_encountered = false;
const DrawTileSeqStruct *dtss;
bool skip_childs = false;
foreach_draw_tile_seq(dtss, dts->seq) {
SpriteID image = dtss->image.sprite;
PaletteID pal = dtss->image.pal;
if (skip_childs) {
if (!dtss->IsParentSprite()) continue;
skip_childs = false;
}
/* TTD sprite 0 means no sprite */
if (GB(image, 0, SPRITE_WIDTH) == 0 && !HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
skip_childs = dtss->IsParentSprite();
continue;
}
/* Stop drawing sprite sequence once we meet a sprite that doesn't have to be opaque */
if (IsInvisibilitySet(to) && !HasBit(image, SPRITE_MODIFIER_OPAQUE)) return;
image += (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? newgrf_offset : orig_offset);
if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += newgrf_offset;
pal = SpriteLayoutPaletteTransform(image, pal, default_palette);
if (dtss->IsParentSprite()) {
parent_sprite_encountered = true;
AddSortableSpriteToDraw(
image, pal,
ti->x + dtss->delta_x, ti->y + dtss->delta_y,
dtss->size_x, dtss->size_y,
dtss->size_z, ti->z + dtss->delta_z,
!HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(to)
);
} else {
int offs_x = child_offset_is_unsigned ? (uint8)dtss->delta_x : dtss->delta_x;
int offs_y = child_offset_is_unsigned ? (uint8)dtss->delta_y : dtss->delta_y;
bool transparent = !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(to);
if (parent_sprite_encountered) {
AddChildSpriteScreen(image, pal, offs_x, offs_y, transparent);
} else {
if (transparent) {
SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
pal = PALETTE_TO_TRANSPARENT;
}
DrawGroundSprite(image, pal, NULL, offs_x, offs_y);
}
}
}
}
/**
* Draws a tile sprite sequence in the GUI
* @param x X position to draw to
* @param y Y position to draw to
* @param dts Sprite and subsprites to draw
* @param orig_offset Sprite-Offset for original sprites
* @param newgrf_offset Sprite-Offset for NewGRF defined sprites
* @param default_palette The default recolour sprite to use (typically company colour)
* @param child_offset_is_unsigned Whether child sprite offsets are interpreted signed or unsigned
*/
void DrawCommonTileSeqInGUI(int x, int y, const DrawTileSprites *dts, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned)
{
const DrawTileSeqStruct *dtss;
Point child_offset = {0, 0};
bool skip_childs = false;
foreach_draw_tile_seq(dtss, dts->seq) {
SpriteID image = dtss->image.sprite;
PaletteID pal = dtss->image.pal;
if (skip_childs) {
if (!dtss->IsParentSprite()) continue;
skip_childs = false;
}
/* TTD sprite 0 means no sprite */
if (GB(image, 0, SPRITE_WIDTH) == 0 && !HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
skip_childs = dtss->IsParentSprite();
continue;
}
image += (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? newgrf_offset : orig_offset);
if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += newgrf_offset;
pal = SpriteLayoutPaletteTransform(image, pal, default_palette);
if (dtss->IsParentSprite()) {
Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
DrawSprite(image, pal, x + pt.x, y + pt.y);
const Sprite *spr = GetSprite(image & SPRITE_MASK, ST_NORMAL);
child_offset.x = pt.x + spr->x_offs;
child_offset.y = pt.y + spr->y_offs;
} else {
int offs_x = child_offset_is_unsigned ? (uint8)dtss->delta_x : dtss->delta_x;
int offs_y = child_offset_is_unsigned ? (uint8)dtss->delta_y : dtss->delta_y;
DrawSprite(image, pal, x + child_offset.x + offs_x, y + child_offset.y + offs_y);
}
}
}
|
