matthew/The-Powder-Toy
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A new unstable REALISTIC option. No guarantees - but more realistic behaviour.

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Better diffusion and heat transition.
This commit is contained in:
savask 2012-02-25 19:45:18 +07:00
parent 30e20300b4
commit f41f96f598
2 changed files with 16 additions and 4 deletions
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5
includes/squares.h Normal file
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15
src/powder.c
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@ -1,6 +1,7 @@
#include <stdint.h>
#include <math.h>
#include <defines.h>
#include <squares.h>
#include <powder.h>
#include <air.h>
#include <misc.h>
@ -1831,8 +1832,14 @@ void update_particles_i(pixel *vid, int start, int inc)
if (ptypes[t].diffusion)//the random diffusion that gasses have
{
#ifdef REALISTIC
//The magic number controlls diffusion speed
parts[i].vx += 0.05*squares[(unsigned int)round(parts[i].temp)]*ptypes[t].diffusion*(rand()/(0.5f*RAND_MAX)-1.0f);
parts[i].vy += 0.05*squares[(unsigned int)round(parts[i].temp)]*ptypes[t].diffusion*(rand()/(0.5f*RAND_MAX)-1.0f);
#else
parts[i].vx += ptypes[t].diffusion*(rand()/(0.5f*RAND_MAX)-1.0f);
parts[i].vy += ptypes[t].diffusion*(rand()/(0.5f*RAND_MAX)-1.0f);
#endif
}
j = surround_space = nt = 0;//if nt is 1 after this, then there is a particle around the current particle, that is NOT the current particle's type, for water movement.
@ -1863,8 +1870,8 @@ void update_particles_i(pixel *vid, int start, int inc)
//heat transfer code
h_count = 0;
#ifdef REALHEAT
if (t&&(t!=PT_HSWC||parts[i].life==10))
#ifdef REALISTIC
if (t&&(t!=PT_HSWC||parts[i].life==10)&&ptypes[t].hconduct)
{
float c_Cm = 0.0f;
#else
@ -1892,7 +1899,7 @@ void update_particles_i(pixel *vid, int start, int inc)
&&(rt!=PT_FILT||(t!=PT_BRAY&&t!=PT_PHOT&&t!=PT_BIZR&&t!=PT_BIZRG)))
{
surround_hconduct[j] = r>>8;
#ifdef REALHEAT
#ifdef REALISTIC
c_heat += parts[r>>8].temp*96.645/ptypes[rt].hconduct*fabs(ptypes[rt].weight);
c_Cm += 96.645/ptypes[rt].hconduct*fabs(ptypes[rt].weight);
#else
@ -1901,7 +1908,7 @@ void update_particles_i(pixel *vid, int start, int inc)
h_count++;
}
}
#ifdef REALHEAT
#ifdef REALISTIC
if (t == PT_PHOT)
pt = (c_heat+parts[i].temp*96.645)/(c_Cm+96.645);
else