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/* broadcast -- creating broadcast messages.
* Copyright (C) 2010-2020 Simen Heggestøyl <simenheg@runbox.com>
*
* This program 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "broadcast.h"
SDL_Surface *broadcast[BROADC_LIMIT];
/**
* Pushes the broadcasts one step upwards the list, making room for a new one.
*/
void pushBroadcasts(void)
{
SDL_FreeSurface(broadcast[BROADC_LIMIT - 1]);
for (int i = BROADC_LIMIT - 1; i > 0; --i) {
broadcast[i] = broadcast[i - 1];
if (broadcast[i] != NULL) {
int alpha = 255 - i * (255.0 / BROADC_LIMIT);
SDL_SetAlpha(broadcast[i], SDL_SRCALPHA, alpha);
}
}
}
/**
* Empties the broadcast message queue.
*/
void cleanBroadcasts(void)
{
for (int i = 0; i < BROADC_LIMIT; ++i) {
SDL_FreeSurface(broadcast[i]);
}
memset(broadcast, '\0', BROADC_LIMIT * sizeof(SDL_Surface*));
}
/**
* Constructs a broadcast message. It may consist of up to three "parts".
* When numbers 1 to MAX_PLAYERS are used, the number is exchanged for a
* "PlayerN" string, and colored according the current player color.
*
* @param msg Message string to be displayed.
* @param pcolors An array of the current player colors.
* @return The constructed broadcast message.
*/
SDL_Surface *makeBroadcast(char *msg, SDL_Color pcolors[MAX_PLAYERS])
{
SDL_Surface *broadcast;
unsigned int i;
char *strings[BROADC_PARTS];
SDL_Surface *parts[BROADC_PARTS];
TTF_Font *font = fonts[FONT_BROADCAST];
unsigned int width = 0;
/* Split message string */
strings[0] = strtok(msg, ";");
for (i = 1; (strings[i] = strtok(NULL, ";")) != NULL; ++i) {}
for (i = 0; i < BROADC_PARTS && strings[i] != NULL; ++i) {
char pstring[PLAYER_NAME_LEN];
if (strlen(strings[i]) == 1) {
int pnum = atoi(strings[i]);
snprintf(pstring, PLAYER_NAME_LEN, "%s", (&players[pnum - 1])->name);
parts[i] = TTF_RenderUTF8_Shaded(font, pstring, pcolors[pnum - 1],
cMenuBG);
}
else {
parts[i] = TTF_RenderUTF8_Shaded(font, strings[i], cBroadcast,
cMenuBG);
}
width += parts[i]->w;
}
broadcast = SDL_CreateRGBSurface(SDL_HWSURFACE, width, parts[0]->h,
SCREEN_BPP, 0, 0, 0, 0);
unsigned int nparts = i;
int hoffset = 0;
for (i = 0; i < nparts; ++i) {
SDL_Rect offset = {hoffset, 0, 0, 0};
SDL_BlitSurface(parts[i], NULL, broadcast, &offset);
hoffset += parts[i]->w;
SDL_FreeSurface(parts[i]);
}
return broadcast;
}
/**
* Adds color to - and broadcasts a message.
*
* @param msg Message to broadcast.
* @param pcolors Colors of the players.
*/
void colorAddBroadcast(char *msg, SDL_Color pcolors[MAX_PLAYERS])
{
pushBroadcasts();
broadcast[0] = makeBroadcast(msg, pcolors);
}
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