OpenTTD: src/texteff.cpp Source File

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texteff.cpp
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1 /* $Id: texteff.cpp 27248 2015-04-25 11:58:19Z frosch $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
12 #include "stdafx.h"
13 #include "texteff.hpp"
14 #include "transparency.h"
15 #include "strings_func.h"
16 #include "core/smallvec_type.hpp"
17 #include "viewport_func.h"
18 #include "settings_type.h"
19
20 #include "safeguards.h"
21
23 struct TextEffect : public ViewportSign {
24 uint64 params_1;
25 uint64 params_2;
26 StringID string_id;
27 uint8 duration;
28 TextEffectMode mode;
29
31 void Reset()
32 {
33 this->MarkDirty();
34 this->width_normal = 0;
35 this->string_id = INVALID_STRING_ID;
36 }
37 };
38
39 static SmallVector<struct TextEffect, 32> _text_effects;
40
41 /* Text Effects */
42 TextEffectID AddTextEffect(StringID msg, int center, int y, uint8 duration, TextEffectMode mode)
43 {
44 if (_game_mode == GM_MENU) return INVALID_TE_ID;
45
46 TextEffectID i;
47 for (i = 0; i < _text_effects.Length(); i++) {
48 if (_text_effects[i].string_id == INVALID_STRING_ID) break;
49 }
50 if (i == _text_effects.Length()) _text_effects.Append();
51
52 TextEffect *te = _text_effects.Get(i);
53
54 /* Start defining this object */
55 te->string_id = msg;
56 te->duration = duration;
57 te->params_1 = GetDParam(0);
58 te->params_2 = GetDParam(1);
59 te->mode = mode;
60
61 /* Make sure we only dirty the new area */
62 te->width_normal = 0;
63 te->UpdatePosition(center, y, msg);
64
65 return i;
66 }
67
68 void UpdateTextEffect(TextEffectID te_id, StringID msg)
69 {
70 /* Update details */
71 TextEffect *te = _text_effects.Get(te_id);
72 if (msg == te->string_id && GetDParam(0) == te->params_1) return;
73 te->string_id = msg;
74 te->params_1 = GetDParam(0);
75 te->params_2 = GetDParam(1);
76
77 te->UpdatePosition(te->center, te->top, msg);
78 }
79
80 void RemoveTextEffect(TextEffectID te_id)
81 {
82 _text_effects[te_id].Reset();
83 }
84
85 void MoveAllTextEffects()
86 {
87 const TextEffect *end = _text_effects.End();
88 for (TextEffect *te = _text_effects.Begin(); te != end; te++) {
89 if (te->string_id == INVALID_STRING_ID) continue;
90 if (te->mode != TE_RISING) continue;
91
92 if (te->duration-- == 0) {
93 te->Reset();
94 continue;
95 }
96
97 te->MarkDirty(ZOOM_LVL_OUT_8X);
98 te->top -= ZOOM_LVL_BASE;
99 te->MarkDirty(ZOOM_LVL_OUT_8X);
100 }
101 }
102
103 void InitTextEffects()
104 {
105 _text_effects.Reset();
106 }
107
108 void DrawTextEffects(DrawPixelInfo *dpi)
109 {
110 /* Don't draw the text effects when zoomed out a lot */
111 if (dpi->zoom > ZOOM_LVL_OUT_8X) return;
112
113 const TextEffect *end = _text_effects.End();
114 for (TextEffect *te = _text_effects.Begin(); te != end; te++) {
115 if (te->string_id == INVALID_STRING_ID) continue;
116 if (te->mode == TE_RISING || (_settings_client.gui.loading_indicators && !IsTransparencySet(TO_LOADING))) {
117 ViewportAddString(dpi, ZOOM_LVL_OUT_8X, te, te->string_id, te->string_id - 1, STR_NULL, te->params_1, te->params_2);
118 }
119 }
120 }