src/particle.cpp

   1 // -----------------------------------------------
   2 // particle.cpp
   3 // -----------------------------------------------
   4 // Many particle types, designed to be used with
   5 // my particle manager.
   6 // -----------------------------------------------
   7 // Developed By Kronoman - Copyright (c) 2004
   8 // In loving memory of my father
   9 // -----------------------------------------------
  10
  11 #include <allegro.h>
  12 #include "particle.h"
  13
  14 // -----------------------------------------------
  15 // Spark particle render
  16 // -----------------------------------------------
  17 void CSparkParticle::render_particle(BITMAP *bmp, int xd, int yd)
  18 {
  19         line(bmp, (int)x - xd, (int)y - yd, (int)(x + dx*scale_spark - xd), (int)(y + dy*scale_spark - yd), color);
  20 }
  21
  22 // -----------------------------------------------
  23 // Circle particle render
  24 // -----------------------------------------------
  25 void CCircleParticle::render_particle(BITMAP *bmp, int xd, int yd)
  26 {
  27         circlefill(bmp, (int)x - xd, (int)y - yd, radius, color);
  28 }
  29
  30 // -----------------------------------------------
  31 // Rect particle render
  32 // -----------------------------------------------
  33 void CRectParticle::render_particle(BITMAP *bmp, int xd, int yd)
  34 {
  35         rectfill(bmp, (int)x - xd, (int)y - yd, (int)(x + size - xd), (int)(y + size - yd), color);
  36 }
  37
  38 // -----------------------------------------------
  39 // Text particle render
  40 // -----------------------------------------------
  41 void CTextParticle::render_particle(BITMAP *bmp, int xd, int yd)
  42 {
  43         text_mode(-1); // DEBUG -- TEXT ALWAYS TRANSPARENT :O
  44         textout_centre(bmp, font_text, text_to_show.c_str(), (int)x - xd, (int)y - yd, color);
  45 }
  46
  47 // -----------------------------------------------
  48 // Explosive text particle
  49 // -----------------------------------------------
  50 bool CExplosiveTextParticle::update_logic(CParticleManager &particle_manager)
  51 {
  52         // when life == 1, spawn particles
  53         if (life == 1)
  54         {
  55                 int yt=0,xt=0;
  56
  57                 while ( (yt+=rand()%3+1) < text_height(font_text) )
  58                 {
  59                         while ( (xt+=rand()%3+1) <  text_length(font_text, text_to_show.c_str() ) )
  60                         {
  61                                 particle_manager.add_particle(new CCircleParticle((int)x+xt, (int)y+yt, (float)((rand()%800)-400)/100.0,(float)((rand()%800)-400)/100.0 , color, rand()%5+10, rand()%2+1));
  62                         }
  63                 }
  64         }
  65
  66         return CTextParticle::update_logic(particle_manager);
  67 }
  68
  69 // -----------------------------------------------
  70 // Bitmap particle render
  71 // -----------------------------------------------
  72 void CBitmapParticle::render_particle(BITMAP *bmp, int xd, int yd)
  73 {
  74         if (spr == NULL) return;
  75         draw_sprite(bmp, spr, (int)x - xd - spr->w/2, (int)y - yd - spr->h/2);
  76 }
  77
  78 // -----------------------------------------------
  79 // Rotating bitmap particle render & logic
  80 // -----------------------------------------------
  81 bool CRotoBitmapParticle::update_logic(CParticleManager &particle_manager)
  82 {
  83         angle += angle_speed;
  84         if (angle < 0.0) angle = 255.0;
  85         if (angle > 255.0) angle = 0.0;
  86
  87         return CBaseParticle::update_logic(particle_manager);
  88 }
  89
  90 void CRotoBitmapParticle::render_particle(BITMAP *bmp, int xd, int yd)
  91 {
  92         if (spr == NULL) return;
  93         pivot_sprite(bmp, spr, (int)x - xd, (int)y - yd, spr->w/2, spr->h/2, ftofix(angle));
  94 }
  95