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#include <base/vmath.hpp>
#include <game/client/component.hpp>
// particles
struct PARTICLE
{
void set_default()
{
vel = vec2(0,0);
life_span = 0;
start_size = 32;
end_size = 32;
rot = 0;
rotspeed = 0;
gravity = 0;
friction = 0;
flow_affected = 1.0f;
color = vec4(1,1,1,1);
}
vec2 pos;
vec2 vel;
int spr;
float flow_affected;
float life_span;
float start_size;
float end_size;
float rot;
float rotspeed;
float gravity;
float friction;
vec4 color;
// set by the particle system
float life;
int prev_part;
int next_part;
};
class PARTICLES : public COMPONENT
{
friend class GAMECLIENT;
public:
enum
{
GROUP_PROJECTILE_TRAIL=0,
GROUP_EXPLOSIONS,
GROUP_GENERAL,
NUM_GROUPS
};
PARTICLES();
void add(int group, PARTICLE *part);
virtual void on_reset();
virtual void on_render();
private:
enum
{
MAX_PARTICLES=1024*8,
};
PARTICLE particles[MAX_PARTICLES];
int first_free;
int first_part[NUM_GROUPS];
void render_group(int group);
void update(float time_passed);
template<int TGROUP>
class RENDER_GROUP : public COMPONENT
{
public:
PARTICLES *parts;
virtual void on_render() { parts->render_group(TGROUP); }
};
RENDER_GROUP<GROUP_PROJECTILE_TRAIL> render_trail;
RENDER_GROUP<GROUP_EXPLOSIONS> render_explosions;
RENDER_GROUP<GROUP_GENERAL> render_general;
};
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