src/X.cxx

   1 /*
   2  * X.cxx
   3  * Daniel Nelson - 11/11/0
   4  *
   5  * Copyright (C) 2000  Daniel Nelson
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * Daniel Nelson - aluminumangel.org
  22  * 174 W. 18th Ave.
  23  * Columbus, OH  43210
  24  *
  25  * Holds the X-treme state.
  26  */
  27
  28 #include "X.h"
  29
  30 #include "Game.h"
  31 #include "Grid.h"
  32 #include "Block.h"
  33 #include "Swapper.h"
  34
  35 int X::reverse_controls;
  36 int X::invisible_swapper;
  37 int X::crazy_lights;
  38 int X::swapper_alpha;
  39 int X::light_mode;
  40 int X::light_alarm;
  41 int X::wild_count;
  42 Wild X::wilds[GC_MAX_WILD_NUMBER];
  43 int X::special_color_count;
  44
  45 const GLfloat X::light_level_map[6][3]
  46  = { { 0.0f, 1.0f, 1.0f },
  47      { 0.5f, 0.5f, 1.0f },
  48      { 1.0f, 0.0f, 1.0f },
  49      { 1.0f, 0.5f, 0.5f },
  50      { 1.0f, 1.0f, 0.0f },
  51      { 0.5f, 1.0f, 0.5f } };
  52
  53 void X::gameStart (   )
  54 {
  55   reverse_controls = 0;
  56
  57   invisible_swapper = 0;
  58   swapper_alpha = GC_INVISIBLE_MAX_ALPHA;
  59
  60   crazy_lights = 0;
  61   light_mode = -1;
  62
  63   wild_count = 0;
  64   for (int n = GC_MAX_WILD_NUMBER; n--; )
  65     wilds[n].active = false;
  66
  67   special_color_count = 0;
  68 }
  69
  70 void X::timeStep (   )
  71 {
  72   // evolve the swapper's invisibleness
  73   if (invisible_swapper != 0 || swapper_alpha != GC_INVISIBLE_MAX_ALPHA)
  74     if (invisible_swapper != 0) {
  75
  76       // drop the swapper's alpha
  77       if (swapper_alpha > 0)
  78         swapper_alpha -= GC_INVISIBLE_QUICK_DECAY_RATE;
  79       else if (swapper_alpha > GC_INVISIBLE_MIN_ALPHA)
  80         swapper_alpha--;
  81
  82       // there is a chance the swapper's alpha will spike upward
  83       if (Random::chanceIn(GC_INVISIBLE_PULSE_CHANCE_IN)) {
  84         swapper_alpha += GC_INVISIBLE_PULSE_STRENGTH;
  85         if (swapper_alpha > GC_INVISIBLE_MAX_ALPHA)
  86           swapper_alpha = GC_INVISIBLE_MAX_ALPHA;
  87       }
  88
  89     // raise the swapper's alpha back to normal
  90     } else
  91       swapper_alpha++;
  92
  93   // evolve the wild blocks' state
  94   if (wild_count != 0) {
  95     int c = wild_count;
  96     for (int n = 0; c; n++)
  97       if (wilds[n].active) {
  98         c--;
  99         if (!--wilds[n].alarm) {
 100
 101           // switch flavors
 102           wilds[n].alarm = GC_WILD_PERIOD;
 103           if (wilds[n].flavor == 0)
 104             wilds[n].flavor = BF_WILD;
 105           else {
 106             wilds[n].flavor--;
 107             if (wilds[n].block->y != 0)
 108               Grid::requestEliminationCheck(*wilds[n].block);
 109           }
 110         }
 111       }
 112   }
 113
 114   // evolve the crazy lights
 115   if (crazy_lights != 0 || light_mode != -1) {
 116
 117     // switch light colors
 118     if (!--light_alarm) {
 119
 120       // if craziness continues
 121       if (crazy_lights != 0) {
 122         if (light_mode != 11)
 123           light_mode++;
 124         else
 125           light_mode = 0;
 126
 127         // odd modes - non-white modes - are longer
 128         if (light_mode & (1 << 0))
 129           light_alarm = GC_CRAZY_LONG_MODE_PERIOD;
 130         else
 131           light_alarm = GC_CRAZY_SHORT_MODE_PERIOD;
 132
 133       // end craziness
 134       } else
 135         light_mode = -1;
 136     }
 137   }
 138 }
 139
 140 void X::notifyImpact ( Garbage &garbage )
 141 /*
 142  * Garbage has impacted.  We must check to see if it's flavor has a special
 143  * effect.
 144  */
 145 {
 146   // controls are reversed
 147   if (garbage.flavor == GF_REVERSE_CONTROLS) {
 148     reverse_controls++;
 149     if (invisible_swapper == 0)
 150       Swapper::color = 1;
 151     else
 152       Swapper::color = 3;
 153
 154   // swapper becomes invisible
 155   } else if (garbage.flavor == GF_INVISIBLE_SWAPPER) {
 156     invisible_swapper++;
 157     if (reverse_controls == 0)
 158       Swapper::color = 2;
 159     else
 160       Swapper::color = 3;
 161
 162   // lights go crazy
 163   } else if (garbage.flavor == GF_CRAZY_LIGHTS) {
 164     crazy_lights++;
 165     if (light_mode == -1) {
 166       light_mode = (Random::number(6) << 1) + 1;
 167       light_alarm = 150;
 168     }
 169   }
 170 }
 171
 172 void X::notifyShatter ( Garbage &garbage )
 173 /*
 174  * Garbage has shattered.  We must check to see if this effects the special
 175  * effects which are occuring.
 176  */
 177 {
 178   if (garbage.flavor == GF_REVERSE_CONTROLS) {
 179     reverse_controls--;
 180     if (reverse_controls == 0)
 181       if (invisible_swapper == 0)
 182         Swapper::color = 0;
 183       else
 184         Swapper::color = 2;
 185
 186   } else if (garbage.flavor == GF_INVISIBLE_SWAPPER) {
 187     invisible_swapper--;
 188     if (invisible_swapper == 0)
 189       if (reverse_controls == 0)
 190         Swapper::color = 0;
 191       else
 192         Swapper::color = 1;
 193
 194   } else if (garbage.flavor == GF_CRAZY_LIGHTS)
 195     crazy_lights--;
 196 }
 197
 198 void X::modifyHeadlightColor ( GLfloat headlight_color[3] )
 199 /*
 200  * Called by LightManager to allow us the opportunity to modify the headlight
 201  * color.
 202  */
 203 {
 204   assert(crazyLights());
 205
 206   GLfloat fade = light_alarm * (2.0f / (float) GC_CRAZY_LONG_MODE_PERIOD);
 207   if (fade > 1.0f)
 208     fade = -1.0f + fade;
 209   else
 210     fade = 1.0f - fade;
 211   fade *= fade;
 212
 213   headlight_color[0] = light_level_map[light_mode >> 1][0]
 214    + fade * (1.0f - light_level_map[light_mode >> 1][0]);
 215   headlight_color[1] = light_level_map[light_mode >> 1][1]
 216    + fade * (1.0f - light_level_map[light_mode >> 1][1]);
 217   headlight_color[2] = light_level_map[light_mode >> 1][2]
 218    + fade * (1.0f - light_level_map[light_mode >> 1][2]);
 219 }