q_shared.cpp

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/*
All original material Copyright (C) 2002-2020 UFO: Alien Invasion.

Original file from Quake 2 v3.21: quake2-2.31/game/q_shared.c
Copyright (C) 1997-2001 Id Software, Inc.

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "q_shared.h"

const char* pa_format[] =
{
    "",                 
    "s",                
    "g",                
    "s",                
    "gbbl",             
    "s",                
    "bbbbbb",           
    "sss",              
    "ss"                
};
CASSERT(lengthof(pa_format) == PA_NUM_EVENTS);

bool TerrainDefs::add(const TerrainDef* tdef) {
    /* check for duplicate color code */
    if (findByColor(tdef->rgbRed, tdef->rgbGreen, tdef->rgbBlue))
        return false;

    /* check for duplicate name */
    if (findByName(tdef->terrainName))
        return false;

    for (int i = 0; i < MAX_TERRAINDEFS - 1; i++) {
        if (!terrainDefTable[i]) {
            terrainDefTable[i] = tdef;
            terrainDefTable[i + 1] = nullptr;
            return true;
        }
    }
    return false;
}

const char* TerrainDefs::getWeather (const byte* const color)
{
    const float rainChance = getRainChance(color);
    const float snowChance = getSnowChance(color);
    const float weatherChance = rainChance + snowChance;
    if (frand() < weatherChance) {
        /* we have weather today */
        if (snowChance < EQUAL_EPSILON || frand() < rainChance / weatherChance)
            return "1"; /* rain */
        return "2"; /* snow */
    }
    /* clear blue sky */
    return "0";
}