texteff.cpp

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00001 /* $Id: texteff.cpp 24068 2012-03-25 19:30:05Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "texteff.hpp"
00014 #include "transparency.h"
00015 #include "strings_func.h"
00016 #include "core/smallvec_type.hpp"
00017 #include "viewport_func.h"
00018 #include "settings_type.h"
00019 
00021 struct TextEffect : public ViewportSign {
00022   uint64 params_1;     
00023   StringID string_id;  
00024   uint8 duration;      
00025   TextEffectMode mode; 
00026 
00028   void Reset()
00029   {
00030     this->MarkDirty();
00031     this->width_normal = 0;
00032     this->string_id = INVALID_STRING_ID;
00033   }
00034 };
00035 
00036 static SmallVector<struct TextEffect, 32> _text_effects; 
00037 
00038 /* Text Effects */
00039 TextEffectID AddTextEffect(StringID msg, int center, int y, uint8 duration, TextEffectMode mode)
00040 {
00041   if (_game_mode == GM_MENU) return INVALID_TE_ID;
00042 
00043   TextEffectID i;
00044   for (i = 0; i < _text_effects.Length(); i++) {
00045     if (_text_effects[i].string_id == INVALID_STRING_ID) break;
00046   }
00047   if (i == _text_effects.Length()) _text_effects.Append();
00048 
00049   TextEffect *te = _text_effects.Get(i);
00050 
00051   /* Start defining this object */
00052   te->string_id = msg;
00053   te->duration = duration;
00054   te->params_1 = GetDParam(0);
00055   te->mode = mode;
00056 
00057   /* Make sure we only dirty the new area */
00058   te->width_normal = 0;
00059   te->UpdatePosition(center, y, msg);
00060 
00061   return i;
00062 }
00063 
00064 void UpdateTextEffect(TextEffectID te_id, StringID msg)
00065 {
00066   /* Update details */
00067   TextEffect *te = _text_effects.Get(te_id);
00068   if (msg == te->string_id && GetDParam(0) == te->params_1) return;
00069   te->string_id = msg;
00070   te->params_1 = GetDParam(0);
00071 
00072   te->UpdatePosition(te->center, te->top, msg);
00073 }
00074 
00075 void RemoveTextEffect(TextEffectID te_id)
00076 {
00077   _text_effects[te_id].Reset();
00078 }
00079 
00080 void MoveAllTextEffects()
00081 {
00082   const TextEffect *end = _text_effects.End();
00083   for (TextEffect *te = _text_effects.Begin(); te != end; te++) {
00084     if (te->string_id == INVALID_STRING_ID) continue;
00085     if (te->mode != TE_RISING) continue;
00086 
00087     if (te->duration-- == 0) {
00088       te->Reset();
00089       continue;
00090     }
00091 
00092     te->MarkDirty(ZOOM_LVL_OUT_8X);
00093     te->top -= ZOOM_LVL_BASE;
00094     te->MarkDirty(ZOOM_LVL_OUT_8X);
00095   }
00096 }
00097 
00098 void InitTextEffects()
00099 {
00100   _text_effects.Reset();
00101 }
00102 
00103 void DrawTextEffects(DrawPixelInfo *dpi)
00104 {
00105   /* Don't draw the text effects when zoomed out a lot */
00106   if (dpi->zoom > ZOOM_LVL_OUT_8X) return;
00107 
00108   const TextEffect *end = _text_effects.End();
00109   for (TextEffect *te = _text_effects.Begin(); te != end; te++) {
00110     if (te->string_id == INVALID_STRING_ID) continue;
00111     if (te->mode == TE_RISING || (_settings_client.gui.loading_indicators && !IsTransparencySet(TO_LOADING))) {
00112       ViewportAddString(dpi, ZOOM_LVL_OUT_8X, te, te->string_id, te->string_id - 1, 0, te->params_1);
00113     }
00114   }
00115 }