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The-Powder-Toy/src/simulation/elements/PAPR.cpp
2023-12-12 16:51:50 -05:00

155 lines
3.5 KiB
C++

#include "simulation/ElementCommon.h"
static int update(UPDATE_FUNC_ARGS);
static int graphics(GRAPHICS_FUNC_ARGS);
// Element overview:
// PAPR (Paper) is a flammable solid element that can be colored by certain other elements.
// Additionally, it can be read and written to by ARAY.
// Property usage:
// life: Written color value. Uses same format as dcolour.
// tmp: Temporary read/write state for ARAY interaction
// tmp2: Singe level
void Element::Element_PAPR()
{
Identifier = "DEFAULT_PT_PAPR";
Name = "PAPR";
Colour = 0xF3F3CA_rgb;
MenuVisible = 1;
MenuSection = SC_SOLIDS;
Enabled = 1;
Advection = 0.0f;
AirDrag = 0.00f * CFDS;
AirLoss = 0.995f;
Loss = 0.00f;
Collision = 0.0f;
Gravity = 0.0f;
Diffusion = 0.00f;
HotAir = 0.000f * CFDS;
Falldown = 0;
Flammable = 0;
Explosive = 0;
Meltable = 0;
Hardness = 15;
Weight = 100;
HeatConduct = 80;
Description = "Paper. Flammable, readable, writable.";
Properties = TYPE_SOLID | PROP_NEUTPENETRATE;
LowPressure = IPL;
LowPressureTransition = NT;
HighPressure = IPH;
HighPressureTransition = NT;
LowTemperature = ITL;
LowTemperatureTransition = NT;
HighTemperature = 700.0f;
HighTemperatureTransition = PT_NONE;
Update = &update;
Graphics = &graphics;
}
static int update(UPDATE_FUNC_ARGS)
{
// Char when above burning temperature
if (parts[i].temp > 450 && parts[i].temp >= parts[i].tmp2)
{
parts[i].tmp2 = (int)parts[i].temp;
}
// Auto-ignition temperature
if (parts[i].temp > (451.0f - 32.f) / 1.8f + 273.15f)
{
parts[i].temp += 1;
if (sim->rng.chance((int)parts[i].temp-450,400))
{
int np = sim->create_part(-1, x + sim->rng.between(-1, 1), y + sim->rng.between(-1, 1), PT_FIRE);
if (np >= 0)
{
parts[np].life = 70;
}
}
}
// Get marked by BCOL
if (TYP(pmap[y][x]) == PT_BCOL)
{
parts[i].life = 1;
parts[i].dcolour = 0xFF22222A;
}
// Generally, these should correspond, but correct if they don't.
if (!parts[i].life != !parts[i].dcolour)
{
parts[i].life = parts[i].dcolour ? 1 : 0;
}
// Decrement tmp counter for laser reading/writing
if (parts[i].tmp & 0xF)
{
parts[i].tmp--;
}
else
{
parts[i].tmp = 0;
}
return 0;
}
static int graphics(GRAPHICS_FUNC_ARGS)
{
float burnAmount = std::max((float)cpart->tmp2, cpart->temp);
if (cpart->life)
{
// Render deco color when marked
if(gfctx.ren->decorations_enable && !gfctx.ren->blackDecorations)
{
// Burnt paper has more faded colors
float alpha = (((cpart->dcolour >> 24) & 0xFF) - restrict_flt((burnAmount - 450) * 1.5f, 0, 255)) / 255.f;
*colr = int(*colr * (1 - alpha) + ((cpart->dcolour >> 16) & 0xFF) * alpha);
*colg = int(*colg * (1 - alpha) + ((cpart->dcolour >> 8) & 0xFF) * alpha);
*colb = int(*colb * (1 - alpha) + ((cpart->dcolour) & 0xFF) * alpha);
}
else // If deco is disabled or blackDecorations is on, become a generic dark gray color
{
*colr = 20;
*colg = 20;
*colb = 20;
}
}
// Darken when burnt
if (burnAmount > 450)
{
*colr -= (int)restrict_flt((burnAmount - 450) * 1.2f, 0, 230);
*colg -= (int)restrict_flt((burnAmount - 450) * 1.4f, 0, 240);
*colb -= (int)restrict_flt((burnAmount - 450) * 1.7f, 0, 197);
}
if (cpart->tmp)
{
*pixel_mode |= PMODE_GLOW;
float flash = (cpart->tmp & 0xF) / 3.f;
*cola = flash * 200;
*colr = int(*colr * (1 - flash));
*colg = int(*colg * (1 - flash));
*colb = int(*colb * (1 - flash));
if (cpart->tmp & 0x10)
{
*colr += int(255 * flash);
}
else
{
*colg += int(255 * flash);
*colb += int(255 * flash);
}
}
*pixel_mode |= NO_DECO;
return 0;
}