From 89acfee4256bba36669e4c459ce8f43d91f3ddc4 Mon Sep 17 00:00:00 2001 From: Marek Moeckel Date: Wed, 18 May 2005 16:15:06 +0000 Subject: [PATCH] added a new particle system that (currently) rains bombs could be used in later (space?) levels, where comets rain from the sky and cause damaging explosions SVN-Revision: 2514 --- data/levels/test/raintest.stl | 2 +- src/object/particlesystem.cpp | 4 +- src/object/particlesystem_absolute.cpp | 171 +++++++++++++++++++++++---------- src/object/particlesystem_absolute.h | 26 ++++- src/sector.cpp | 6 +- 5 files changed, 153 insertions(+), 56 deletions(-) diff --git a/data/levels/test/raintest.stl b/data/levels/test/raintest.stl index 43b8890e1..a7aa5f98c 100644 --- a/data/levels/test/raintest.stl +++ b/data/levels/test/raintest.stl @@ -194,7 +194,7 @@ (speed 1.2) (layer 400) ) - (particles-ghost + (particles-ghosts ) (particles-rain ) diff --git a/src/object/particlesystem.cpp b/src/object/particlesystem.cpp index 929c2bd46..3dc2bf6e7 100644 --- a/src/object/particlesystem.cpp +++ b/src/object/particlesystem.cpp @@ -161,9 +161,9 @@ GhostParticleSystem::parse(const lisp::Lisp& reader) void GhostParticleSystem::write(lisp::Writer& writer) { - writer.start_list("particles-ghost"); + writer.start_list("particles-ghosts"); writer.write_int("layer", layer); - writer.end_list("particles-ghost"); + writer.end_list("particles-ghosts"); } GhostParticleSystem::~GhostParticleSystem() diff --git a/src/object/particlesystem_absolute.cpp b/src/object/particlesystem_absolute.cpp index e3713cb72..e330820f3 100644 --- a/src/object/particlesystem_absolute.cpp +++ b/src/object/particlesystem_absolute.cpp @@ -35,6 +35,7 @@ #include "collision.h" #include "collision_hit.h" #include "object/camera.h" +#include "badguy/bomb.h" //TODO: Dynamically create splashes at collision spots // Find a way to make rain collide with objects like bonus blocks @@ -67,6 +68,64 @@ void ParticleSystem_Absolute::draw(DrawingContext& context) context.pop_transform(); } +bool +ParticleSystem_Absolute::collision(Particle* object, Vector movement) +{ + TileMap* solids = Sector::current()->solids; + // calculate rectangle where the object will move + float x1, x2; + float y1, y2; + x1 = object->pos.x; + x2 = x1 + 32 + movement.x; + y1 = object->pos.y; + y2 = y1 + 32 + movement.y; + + // test with all tiles in this rectangle + int starttilex = int(x1-1) / 32; + int starttiley = int(y1-1) / 32; + int max_x = int(x2+1); + int max_y = int(y2+1); + + CollisionHit temphit, hit; + Rect dest = Rect(x1, y1, x2, y2); + dest.move(movement); + hit.time = -1; // represents an invalid value + for(int x = starttilex; x*32 < max_x; ++x) { + for(int y = starttiley; y*32 < max_y; ++y) { + const Tile* tile = solids->get_tile(x, y); + if(!tile) + continue; + // skip non-solid tiles + if(!(tile->getAttributes() & Tile::SOLID)) + continue; + + if(tile->getAttributes() & Tile::SLOPE) { // slope tile + AATriangle triangle; + Vector p1(x*32, y*32); + Vector p2((x+1)*32, (y+1)*32); + triangle = AATriangle(p1, p2, tile->getData()); + + if(Collision::rectangle_aatriangle(temphit, dest, movement, + triangle)) { + if(temphit.time > hit.time) + hit = temphit; + } + } else { // normal rectangular tile + Rect rect(x*32, y*32, (x+1)*32, (y+1)*32); + if(Collision::rectangle_rectangle(temphit, dest, + movement, rect)) { + if(temphit.time > hit.time) + hit = temphit; + } + } + } + } + + // did we collide at all? + if(hit.time < 0) + return false; else return true; +} + RainParticleSystem::RainParticleSystem() { rainimages[0] = new Surface(datadir+"/images/objects/particles/rain0.png", true); @@ -132,60 +191,70 @@ void RainParticleSystem::update(float elapsed_time) } } -bool -RainParticleSystem::collision(RainParticle* object, Vector movement) +CometParticleSystem::CometParticleSystem() { - TileMap* solids = Sector::current()->solids; - // calculate rectangle where the object will move - float x1, x2; - float y1, y2; - x1 = object->pos.x; - x2 = x1 + 32 + movement.x; - y1 = object->pos.y; - y2 = y1 + 32 + movement.y; - - // test with all tiles in this rectangle - int starttilex = int(x1-1) / 32; - int starttiley = int(y1-1) / 32; - int max_x = int(x2+1); - int max_y = int(y2+1); - - CollisionHit temphit, hit; - Rect dest = Rect(x1, y1, x2, y2); - dest.move(movement); - hit.time = -1; // represents an invalid value - for(int x = starttilex; x*32 < max_x; ++x) { - for(int y = starttiley; y*32 < max_y; ++y) { - const Tile* tile = solids->get_tile(x, y); - if(!tile) - continue; - // skip non-solid tiles - if(!(tile->getAttributes() & Tile::SOLID)) - continue; + cometimages[0] = new Surface(datadir+"/images/creatures/mr_bomb/exploding-left-0.png", true); + cometimages[1] = new Surface(datadir+"/images/creatures/mr_bomb/exploding-left-0.png", true); - if(tile->getAttributes() & Tile::SLOPE) { // slope tile - AATriangle triangle; - Vector p1(x*32, y*32); - Vector p2((x+1)*32, (y+1)*32); - triangle = AATriangle(p1, p2, tile->getData()); + virtual_width = SCREEN_WIDTH * 2; - if(Collision::rectangle_aatriangle(temphit, dest, movement, - triangle)) { - if(temphit.time > hit.time) - hit = temphit; - } - } else { // normal rectangular tile - Rect rect(x*32, y*32, (x+1)*32, (y+1)*32); - if(Collision::rectangle_rectangle(temphit, dest, - movement, rect)) { - if(temphit.time > hit.time) - hit = temphit; + // create some random comets + size_t cometcount = 2; + for(size_t i=0; ipos.x = rand() % int(virtual_width); + particle->pos.y = rand() % int(virtual_height); + int cometsize = rand() % 2; + particle->texture = cometimages[cometsize]; + do { + particle->speed = (cometsize+1)*30 + (float(rand()%10)*.4); + } while(particle->speed < 1); + particle->speed *= 10; // gravity + + particles.push_back(particle); + } +} + +void +CometParticleSystem::parse(const lisp::Lisp& reader) +{ + reader.get("layer", layer); +} + +void +CometParticleSystem::write(lisp::Writer& writer) +{ + writer.start_list("particles-comets"); + writer.write_int("layer", layer); + writer.end_list("particles-comets"); +} + +CometParticleSystem::~CometParticleSystem() +{ + for(int i=0;i<2;++i) + delete cometimages[i]; +} + +void CometParticleSystem::update(float elapsed_time) +{ + std::vector::iterator i; + for( + i = particles.begin(); i != particles.end(); ++i) { + CometParticle* particle = (CometParticle*) *i; + float movement = particle->speed * elapsed_time; + float abs_x = Sector::current()->camera->get_translation().x; + float abs_y = Sector::current()->camera->get_translation().y; + particle->pos.y += movement; + particle->pos.x -= movement; + if ((particle->pos.y > SCREEN_HEIGHT + abs_y) || (collision(particle, Vector(-movement, movement)))) { + if (particle->pos.y <= SCREEN_HEIGHT + abs_y) { + Sector::current()->add_object(new Bomb(particle->pos, LEFT)); + } + int new_x = (rand() % int(virtual_width)) + int(abs_x); + int new_y = 0; + //FIXME: Don't move particles over solid tiles + particle->pos.x = new_x; + particle->pos.y = new_y; } - } } - } - - // did we collide at all? - if(hit.time < 0) - return false; else return true; } diff --git a/src/object/particlesystem_absolute.h b/src/object/particlesystem_absolute.h index 0db25986a..d7ce95698 100644 --- a/src/object/particlesystem_absolute.h +++ b/src/object/particlesystem_absolute.h @@ -67,6 +67,7 @@ protected: std::vector particles; float virtual_width, virtual_height; + bool collision(Particle* particle, Vector movement); }; class RainParticleSystem : public ParticleSystem_Absolute, public Serializable @@ -90,9 +91,32 @@ private: float speed; }; - bool collision(RainParticle* particle, Vector movement); Surface* rainimages[2]; }; +class CometParticleSystem : public ParticleSystem_Absolute, public Serializable +{ +public: + CometParticleSystem(); + virtual ~CometParticleSystem(); + + void parse(const lisp::Lisp& lisp); + void write(lisp::Writer& writer); + + virtual void update(float elapsed_time); + + std::string type() const + { return "CometParticleSystem"; } + +private: + class CometParticle : public Particle + { + public: + float speed; + }; + + Surface* cometimages[2]; +}; + #endif diff --git a/src/sector.cpp b/src/sector.cpp index 1021ff58a..b040e1772 100644 --- a/src/sector.cpp +++ b/src/sector.cpp @@ -114,7 +114,11 @@ Sector::parse_object(const std::string& name, const lisp::Lisp& reader) RainParticleSystem* partsys = new RainParticleSystem(); partsys->parse(reader); return partsys; - } else if(name == "particles-ghost") { + } else if(name == "particles-comets") { + CometParticleSystem* partsys = new CometParticleSystem(); + partsys->parse(reader); + return partsys; + } else if(name == "particles-ghosts") { GhostParticleSystem* partsys = new GhostParticleSystem(); partsys->parse(reader); return partsys; -- 2.11.0