mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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143 lines
4.0 KiB
C++
143 lines
4.0 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file texteff.cpp Handling of text effects. */
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#include "stdafx.h"
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#include "openttd.h"
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#include "strings_type.h"
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#include "texteff.hpp"
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#include "core/bitmath_func.hpp"
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#include "transparency.h"
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#include "strings_func.h"
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#include "core/alloc_func.hpp"
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#include "viewport_func.h"
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#include "settings_type.h"
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enum {
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INIT_NUM_TEXT_EFFECTS = 20,
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};
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/** Container for all information about a text effect */
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struct TextEffect : public ViewportSign{
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StringID string_id; ///< String to draw for the text effect, if INVALID_STRING_ID then it's not valid
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uint16 duration; ///< How long the text effect should stay
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uint64 params_1; ///< DParam parameter
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TextEffectMode mode; ///< Type of text effect
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/** Reset the text effect */
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void Reset()
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{
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this->MarkDirty();
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this->width_normal = 0;
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this->string_id = INVALID_STRING_ID;
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}
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};
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/* used for text effects */
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static TextEffect *_text_effect_list = NULL;
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static uint16 _num_text_effects = INIT_NUM_TEXT_EFFECTS;
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/* Text Effects */
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TextEffectID AddTextEffect(StringID msg, int center, int y, uint16 duration, TextEffectMode mode)
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{
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TextEffectID i;
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if (_game_mode == GM_MENU) return INVALID_TE_ID;
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/* Look for a free spot in the text effect array */
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for (i = 0; i < _num_text_effects; i++) {
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if (_text_effect_list[i].string_id == INVALID_STRING_ID) break;
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}
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/* If there is none found, we grow the array */
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if (i == _num_text_effects) {
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_num_text_effects += 25;
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_text_effect_list = ReallocT<TextEffect>(_text_effect_list, _num_text_effects);
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for (; i < _num_text_effects; i++) _text_effect_list[i].string_id = INVALID_STRING_ID;
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i = _num_text_effects - 1;
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}
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TextEffect *te = &_text_effect_list[i];
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/* Start defining this object */
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te->string_id = msg;
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te->duration = duration;
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te->params_1 = GetDParam(0);
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te->mode = mode;
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/* Make sure we only dirty the new area */
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te->width_normal = 0;
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te->UpdatePosition(center, y, msg);
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return i;
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}
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void UpdateTextEffect(TextEffectID te_id, StringID msg)
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{
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assert(te_id < _num_text_effects);
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/* Update details */
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TextEffect *te = &_text_effect_list[te_id];
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te->string_id = msg;
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te->params_1 = GetDParam(0);
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te->UpdatePosition(te->center, te->top, msg);
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}
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void RemoveTextEffect(TextEffectID te_id)
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{
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assert(te_id < _num_text_effects);
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_text_effect_list[te_id].Reset();
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}
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static void MoveTextEffect(TextEffect *te)
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{
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/* Never expire for duration of 0xFFFF */
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if (te->duration == 0xFFFF) return;
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if (te->duration < 8) {
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te->Reset();
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} else {
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te->duration -= 8;
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te->MarkDirty();
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te->top--;
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te->MarkDirty();
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}
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}
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void MoveAllTextEffects()
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{
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for (TextEffectID i = 0; i < _num_text_effects; i++) {
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TextEffect *te = &_text_effect_list[i];
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if (te->string_id != INVALID_STRING_ID && te->mode == TE_RISING) MoveTextEffect(te);
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}
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}
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void InitTextEffects()
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{
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if (_text_effect_list == NULL) _text_effect_list = MallocT<TextEffect>(_num_text_effects);
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for (TextEffectID i = 0; i < _num_text_effects; i++) _text_effect_list[i].string_id = INVALID_STRING_ID;
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}
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void DrawTextEffects(DrawPixelInfo *dpi)
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{
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/* Don't draw the text effects when zoomed out a lot */
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if (dpi->zoom > ZOOM_LVL_OUT_2X) return;
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for (TextEffectID i = 0; i < _num_text_effects; i++) {
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const TextEffect *te = &_text_effect_list[i];
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if (te->string_id == INVALID_STRING_ID) continue;
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if (te->mode == TE_RISING || (_settings_client.gui.loading_indicators && !IsTransparencySet(TO_LOADING))) {
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ViewportAddString(dpi, ZOOM_LVL_OUT_2X, te, te->string_id, te->string_id - 1, 0, te->params_1);
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}
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}
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}
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