// 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 "particlesystem.h"
+
#include <iostream>
-#include <math.h>
-#include "globals.h"
-#include "scene.h"
+#include <cmath>
+
+#include "particlesystem.h"
+#include "app/globals.h"
+#include "utils/lispreader.h"
+#include "utils/lispwriter.h"
+#include "video/drawing_context.h"
ParticleSystem::ParticleSystem()
{
virtual_width = screen->w;
virtual_height = screen->h;
+ layer = LAYER_BACKGROUND1;
}
ParticleSystem::~ParticleSystem()
}
}
-void ParticleSystem::draw(float scrollx, float scrolly, int layer)
+void ParticleSystem::draw(DrawingContext& context)
{
+ float scrollx = context.get_translation().x;
+ float scrolly = context.get_translation().y;
+
+ context.push_transform();
+ context.set_translation(Vector(0,0));
+
std::vector<Particle*>::iterator i;
for(i = particles.begin(); i != particles.end(); ++i) {
Particle* particle = *i;
- if(particle->layer != layer)
- continue;
-
+
// remap x,y coordinates onto screencoordinates
- float x = fmodf(particle->x - scrollx, virtual_width);
- if(x < 0) x += virtual_width;
- float y = fmodf(particle->y - scrolly, virtual_height);
- if(y < 0) y += virtual_height;
- float xmax = fmodf(x + particle->texture->w, virtual_width);
- float ymax = fmodf(y + particle->texture->h, virtual_height);
-
- // particle on screen
- if(x >= screen->w && xmax >= screen->w)
- continue;
- if(y >= screen->h && ymax >= screen->h)
- continue;
-
- if(x > screen->w) x -= virtual_width;
- if(y > screen->h) y -= virtual_height;
- texture_draw(particle->texture, x, y);
+ Vector pos;
+ pos.x = fmodf(particle->pos.x - scrollx, virtual_width);
+ if(pos.x < 0) pos.x += virtual_width;
+ pos.y = fmodf(particle->pos.y - scrolly, virtual_height);
+ if(pos.y < 0) pos.y += virtual_height;
+
+ if(pos.x > screen->w) pos.x -= virtual_width;
+ if(pos.y > screen->h) pos.y -= virtual_height;
+ context.draw_surface(particle->texture, pos, layer);
}
+
+ context.pop_transform();
}
SnowParticleSystem::SnowParticleSystem()
{
- texture_load(&snowimages[0], datadir+"/images/shared/snow0.png", USE_ALPHA);
- texture_load(&snowimages[1], datadir+"/images/shared/snow1.png", USE_ALPHA);
- texture_load(&snowimages[2], datadir+"/images/shared/snow2.png", USE_ALPHA);
+ snowimages[0] = new Surface(datadir+"/images/shared/snow0.png", true);
+ snowimages[1] = new Surface(datadir+"/images/shared/snow1.png", true);
+ snowimages[2] = new Surface(datadir+"/images/shared/snow2.png", true);
virtual_width = screen->w * 2;
size_t snowflakecount = size_t(virtual_width/10.0);
for(size_t i=0; i<snowflakecount; ++i) {
SnowParticle* particle = new SnowParticle;
- particle->x = rand() % int(virtual_width);
- particle->y = rand() % screen->h;
- particle->layer = i % 2;
+ particle->pos.x = rand() % int(virtual_width);
+ particle->pos.y = rand() % screen->h;
int snowsize = rand() % 3;
- particle->texture = &snowimages[snowsize];
- particle->speed = 0.01 + snowsize/50.0 + (rand()%(int)gravity/15.0);
+ particle->texture = snowimages[snowsize];
+ do {
+ particle->speed = snowsize/60.0 + (float(rand()%10)/300.0);
+ } while(particle->speed < 0.01);
particles.push_back(particle);
}
}
+void
+SnowParticleSystem::parse(LispReader& reader)
+{
+ reader.read_int("layer", layer);
+}
+
+void
+SnowParticleSystem::write(LispWriter& writer)
+{
+ writer.start_list("particles-snow");
+ writer.write_int("layer", layer);
+ writer.end_list("particles-snow");
+}
+
SnowParticleSystem::~SnowParticleSystem()
{
- for(int i=0;i<3;++i)
- texture_free(&snowimages[i]);
+ for(int i=0;i<3;++i)
+ delete snowimages[i];
}
-void SnowParticleSystem::simulate(float elapsed_time)
+void SnowParticleSystem::action(float elapsed_time)
{
std::vector<Particle*>::iterator i;
for(i = particles.begin(); i != particles.end(); ++i) {
SnowParticle* particle = (SnowParticle*) *i;
- particle->y += particle->speed * elapsed_time;
- if(particle->y > screen->h) {
- particle->y = 0;
- particle->x = rand() % int(virtual_width);
+ particle->pos.y += particle->speed * elapsed_time;
+ if(particle->pos.y > screen->h) {
+ particle->pos.y = fmodf(particle->pos.y , virtual_height);
+ particle->pos.x = rand() % int(virtual_width);
}
}
}
CloudParticleSystem::CloudParticleSystem()
{
- texture_load(&cloudimage, datadir + "/images/shared/cloud.png", USE_ALPHA);
+ cloudimage = new Surface(datadir + "/images/shared/cloud.png", true);
- virtual_width = 5000.0;
+ virtual_width = 2000.0;
// create some random clouds
for(size_t i=0; i<15; ++i) {
CloudParticle* particle = new CloudParticle;
- particle->x = rand() % int(virtual_width);
- particle->y = rand() % int((float) screen->h * 0.3333);
- particle->layer = 0;
- particle->texture = &cloudimage;
+ particle->pos.x = rand() % int(virtual_width);
+ particle->pos.y = rand() % int(virtual_height);
+ particle->texture = cloudimage;
particle->speed = -float(250 + rand() % 200) / 1000.0;
particles.push_back(particle);
}
}
+void
+CloudParticleSystem::parse(LispReader& reader)
+{
+ reader.read_int("layer", layer);
+}
+
+void
+CloudParticleSystem::write(LispWriter& writer)
+{
+ writer.start_list("particles-clouds");
+ writer.write_int("layer", layer);
+ writer.end_list("particles-clouds");
+}
+
CloudParticleSystem::~CloudParticleSystem()
{
- texture_free(&cloudimage);
+ delete cloudimage;
}
-void CloudParticleSystem::simulate(float elapsed_time)
+void CloudParticleSystem::action(float elapsed_time)
{
std::vector<Particle*>::iterator i;
for(i = particles.begin(); i != particles.end(); ++i) {
CloudParticle* particle = (CloudParticle*) *i;
- particle->x += particle->speed * elapsed_time;
+ particle->pos.x += particle->speed * elapsed_time;
}
}
projects / supertux.git / blobdiff