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358 lines
9.1 KiB
C
358 lines
9.1 KiB
C
/* Goom Project
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* Copyright (C) <2003> iOS-Software
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <stdlib.h>
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#include "v3d.h"
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#include "surf3d.h"
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#include "goom_tools.h"
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#include "goom_config.h"
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#include "goom_plugin_info.h"
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#include "tentacle3d.h"
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#define D 256.0f
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#define nbgrid 6
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#define definitionx 15
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#define definitionz 45
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typedef struct _TENTACLE_FX_DATA
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{
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PluginParam enabled_bp;
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PluginParameters params;
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float cycle;
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grid3d *grille[nbgrid];
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float *vals;
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#define NB_TENTACLE_COLORS 4
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int colors[NB_TENTACLE_COLORS];
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int col;
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int dstcol;
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float lig;
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float ligs;
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/* statics from pretty_move */
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float distt;
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float distt2;
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float rot; /* entre 0 et 2 * G_PI */
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int happens;
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int rotation;
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int lock;
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} TentacleFXData;
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static void tentacle_new (TentacleFXData * data);
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static void tentacle_update (PluginInfo * goomInfo, Pixel * buf, Pixel * back,
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int W, int H, short[2][512], float, int drawit, TentacleFXData * data);
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static void tentacle_free (TentacleFXData * data);
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/*
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* VisualFX wrapper for the tentacles
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*/
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static void
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tentacle_fx_init (VisualFX * _this, PluginInfo * info)
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{
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TentacleFXData *data = (TentacleFXData *) malloc (sizeof (TentacleFXData));
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secure_b_param (&data->enabled_bp, "Enabled", 1);
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plugin_parameters (&data->params, "3D Tentacles", 1);
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data->params.params[0] = &data->enabled_bp;
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data->cycle = 0.0f;
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data->col =
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(0x28 << (ROUGE * 8)) | (0x2c << (VERT * 8)) | (0x5f << (BLEU * 8));
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data->dstcol = 0;
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data->lig = 1.15f;
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data->ligs = 0.1f;
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data->distt = 10.0f;
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data->distt2 = 0.0f;
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data->rot = 0.0f; /* entre 0 et 2 * G_PI */
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data->happens = 0;
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data->rotation = 0;
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data->lock = 0;
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data->colors[0] =
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(0x18 << (ROUGE * 8)) | (0x4c << (VERT * 8)) | (0x2f << (BLEU * 8));
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data->colors[1] =
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(0x48 << (ROUGE * 8)) | (0x2c << (VERT * 8)) | (0x6f << (BLEU * 8));
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data->colors[2] =
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(0x58 << (ROUGE * 8)) | (0x3c << (VERT * 8)) | (0x0f << (BLEU * 8));
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data->colors[3] =
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(0x87 << (ROUGE * 8)) | (0x55 << (VERT * 8)) | (0x74 << (BLEU * 8));
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tentacle_new (data);
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_this->params = &data->params;
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_this->fx_data = (void *) data;
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}
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static void
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tentacle_fx_apply (VisualFX * _this, Pixel * src, Pixel * dest,
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PluginInfo * goomInfo)
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{
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TentacleFXData *data = (TentacleFXData *) _this->fx_data;
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if (BVAL (data->enabled_bp)) {
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tentacle_update (goomInfo, dest, src, goomInfo->screen.width,
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goomInfo->screen.height, goomInfo->sound.samples,
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(float) goomInfo->sound.accelvar,
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goomInfo->curGState->drawTentacle, data);
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}
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}
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static void
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tentacle_fx_free (VisualFX * _this)
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{
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tentacle_free ((TentacleFXData *) _this->fx_data);
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free (_this->fx_data);
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}
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void
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tentacle_fx_create (VisualFX * fx)
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{
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fx->init = tentacle_fx_init;
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fx->apply = tentacle_fx_apply;
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fx->free = tentacle_fx_free;
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fx->fx_data = NULL;
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fx->params = NULL;
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}
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/* ----- */
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static void
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tentacle_free (TentacleFXData * data)
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{
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int tmp;
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/* FREE GRID */
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for (tmp = 0; tmp < nbgrid; tmp++)
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grid3d_free (data->grille[tmp]);
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free (data->vals);
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goom_plugin_parameters_free (&data->params);
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}
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static void
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tentacle_new (TentacleFXData * data)
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{
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int tmp;
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v3d center = { 0, -17.0, 0 };
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data->vals = (float *) malloc ((definitionx + 20) * sizeof (float));
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for (tmp = 0; tmp < nbgrid; tmp++) {
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int x, z;
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z = 45 + rand () % 30;
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x = 85 + rand () % 5;
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center.z = z;
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data->grille[tmp] =
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grid3d_new (x, definitionx, z, definitionz + rand () % 10, center);
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center.y += 8;
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}
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}
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static inline unsigned char
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lighten (unsigned char value, float power)
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{
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int val = value;
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float t = (float) val * log10 (power) / 2.0;
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if (t > 0) {
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val = (int) t; /* (32.0f * log (t)); */
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if (val > 255)
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val = 255;
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if (val < 0)
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val = 0;
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return val;
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} else {
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return 0;
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}
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}
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static void
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lightencolor (int *col, float power)
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{
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unsigned char *color;
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color = (unsigned char *) col;
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*color = lighten (*color, power);
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color++;
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*color = lighten (*color, power);
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color++;
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*color = lighten (*color, power);
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color++;
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*color = lighten (*color, power);
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}
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/* retourne x>>s , en testant le signe de x */
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#define ShiftRight(_x,_s) ((_x<0) ? -(-_x>>_s) : (_x>>_s))
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static int
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evolutecolor (unsigned int src, unsigned int dest,
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unsigned int mask, unsigned int incr)
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{
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int color = src & (~mask);
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src &= mask;
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dest &= mask;
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if ((src != mask)
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&& (src < dest))
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src += incr;
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if (src > dest)
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src -= incr;
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return (src & mask) | color;
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}
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static void
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pretty_move (PluginInfo * goomInfo, float cycle, float *dist, float *dist2,
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float *rotangle, TentacleFXData * fx_data)
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{
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float tmp;
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/* many magic numbers here... I don't really like that. */
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if (fx_data->happens)
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fx_data->happens -= 1;
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else if (fx_data->lock == 0) {
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fx_data->happens =
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goom_irand (goomInfo->gRandom,
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200) ? 0 : 100 + goom_irand (goomInfo->gRandom, 60);
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fx_data->lock = fx_data->happens * 3 / 2;
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} else
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fx_data->lock--;
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tmp = fx_data->happens ? 8.0f : 0;
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*dist2 = fx_data->distt2 = (tmp + 15.0f * fx_data->distt2) / 16.0f;
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tmp = 30 + D - 90.0f * (1.0f + sin (cycle * 19 / 20));
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if (fx_data->happens)
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tmp *= 0.6f;
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*dist = fx_data->distt = (tmp + 3.0f * fx_data->distt) / 4.0f;
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if (!fx_data->happens) {
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tmp = G_PI * sin (cycle) / 32 + 3 * G_PI / 2;
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} else {
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fx_data->rotation =
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goom_irand (goomInfo->gRandom,
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500) ? fx_data->rotation : goom_irand (goomInfo->gRandom, 2);
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if (fx_data->rotation)
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cycle *= 2.0f * G_PI;
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else
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cycle *= -1.0f * G_PI;
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tmp = cycle - (G_PI * 2.0) * floor (cycle / (G_PI * 2.0));
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}
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if (fabs (tmp - fx_data->rot) > fabs (tmp - (fx_data->rot + 2.0 * G_PI))) {
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fx_data->rot = (tmp + 15.0f * (fx_data->rot + 2 * G_PI)) / 16.0f;
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if (fx_data->rot > 2.0 * G_PI)
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fx_data->rot -= 2.0 * G_PI;
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*rotangle = fx_data->rot;
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} else if (fabs (tmp - fx_data->rot) >
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fabs (tmp - (fx_data->rot - 2.0 * G_PI))) {
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fx_data->rot = (tmp + 15.0f * (fx_data->rot - 2.0 * G_PI)) / 16.0f;
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if (fx_data->rot < 0.0f)
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fx_data->rot += 2.0 * G_PI;
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*rotangle = fx_data->rot;
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} else
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*rotangle = fx_data->rot = (tmp + 15.0f * fx_data->rot) / 16.0f;
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}
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static void
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tentacle_update (PluginInfo * goomInfo, Pixel * buf, Pixel * back, int W, int H,
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short data[2][512], float rapport, int drawit, TentacleFXData * fx_data)
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{
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int tmp;
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int tmp2;
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int color;
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int colorlow;
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float dist, dist2, rotangle;
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if ((!drawit) && (fx_data->ligs > 0.0f))
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fx_data->ligs = -fx_data->ligs;
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fx_data->lig += fx_data->ligs;
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if (fx_data->lig > 1.01f) {
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if ((fx_data->lig > 10.0f) | (fx_data->lig < 1.1f))
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fx_data->ligs = -fx_data->ligs;
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if ((fx_data->lig < 6.3f) && (goom_irand (goomInfo->gRandom, 30) == 0))
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fx_data->dstcol = goom_irand (goomInfo->gRandom, NB_TENTACLE_COLORS);
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fx_data->col =
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evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff,
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0x01);
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fx_data->col =
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evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff00,
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0x0100);
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fx_data->col =
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evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff0000,
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0x010000);
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fx_data->col =
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evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol],
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0xff000000, 0x01000000);
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color = fx_data->col;
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colorlow = fx_data->col;
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lightencolor (&color, fx_data->lig * 2.0f + 2.0f);
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lightencolor (&colorlow, (fx_data->lig / 3.0f) + 0.67f);
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rapport = 1.0f + 2.0f * (rapport - 1.0f);
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rapport *= 1.2f;
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if (rapport > 1.12f)
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rapport = 1.12f;
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pretty_move (goomInfo, fx_data->cycle, &dist, &dist2, &rotangle, fx_data);
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for (tmp = 0; tmp < nbgrid; tmp++) {
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for (tmp2 = 0; tmp2 < definitionx; tmp2++) {
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float val =
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(float) (ShiftRight (data[0][goom_irand (goomInfo->gRandom, 511)],
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10)) * rapport;
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fx_data->vals[tmp2] = val;
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}
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grid3d_update (fx_data->grille[tmp], rotangle, fx_data->vals, dist2);
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}
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fx_data->cycle += 0.01f;
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for (tmp = 0; tmp < nbgrid; tmp++)
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grid3d_draw (goomInfo, fx_data->grille[tmp], color, colorlow, dist, buf,
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back, W, H);
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} else {
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fx_data->lig = 1.05f;
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if (fx_data->ligs < 0.0f)
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fx_data->ligs = -fx_data->ligs;
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pretty_move (goomInfo, fx_data->cycle, &dist, &dist2, &rotangle, fx_data);
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fx_data->cycle += 0.1f;
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if (fx_data->cycle > 1000)
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fx_data->cycle = 0;
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}
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}
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