279 lines
8.3 KiB
C++
279 lines
8.3 KiB
C++
#include "simulation/ElementCommon.h"
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static int update(UPDATE_FUNC_ARGS);
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static int graphics(GRAPHICS_FUNC_ARGS);
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static void create(ELEMENT_CREATE_FUNC_ARGS);
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static void init_graphics();
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static int trymovetron(Simulation * sim, int x, int y, int dir, int i, int len);
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static bool canmovetron(Simulation * sim, int r, int len);
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static int new_tronhead(Simulation * sim, int x, int y, int i, int direction);
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void Element::Element_TRON()
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{
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Identifier = "DEFAULT_PT_TRON";
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Name = "TRON";
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Colour = PIXPACK(0xA9FF00);
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MenuVisible = 1;
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MenuSection = SC_SPECIAL;
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Enabled = 1;
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Advection = 0.0f;
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AirDrag = 0.00f * CFDS;
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AirLoss = 0.90f;
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Loss = 0.00f;
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Collision = 0.0f;
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Gravity = 0.0f;
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Diffusion = 0.00f;
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HotAir = 0.000f * CFDS;
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Falldown = 0;
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Flammable = 0;
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Explosive = 0;
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Meltable = 0;
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Hardness = 0;
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Weight = 100;
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DefaultProperties.temp = 0.0f;
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HeatConduct = 40;
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Description = "Smart particles, Travels in straight lines and avoids obstacles. Grows with time."_i18n;
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Properties = TYPE_SOLID|PROP_LIFE_DEC|PROP_LIFE_KILL;
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LowPressure = IPL;
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LowPressureTransition = NT;
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HighPressure = IPH;
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HighPressureTransition = NT;
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LowTemperature = ITL;
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LowTemperatureTransition = NT;
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HighTemperature = ITH;
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HighTemperatureTransition = NT;
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Update = &update;
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Graphics = &graphics;
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Create = &create;
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init_graphics();
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}
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/* TRON element is meant to resemble a tron bike (or worm) moving around and trying to avoid obstacles itself.
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* It has four direction each turn to choose from, 0 (left) 1 (up) 2 (right) 3 (down).
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* Each turn has a small random chance to randomly turn one way (so it doesn't do the exact same thing in a large room)
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* If the place it wants to move isn't a barrier, it will try and 'see' in front of itself to determine its safety.
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* For now the tron can only see its own body length in pixels ahead of itself (and around corners)
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* - - - - - - - - - -
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* - - - - + - - - - -
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* - - - + + + - - - -
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* - - +<--+-->+ - - -
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* - +<----+---->+ - -
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* - - - - H - - - - -
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* Where H is the head with tail length 4, it checks the + area to see if it can hit any of the edges, then it is called safe, or picks the biggest area if none safe.
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* .tmp bit values: 1st head, 2nd no tail growth, 3rd wait flag, 4th Nodie, 5th Dying, 6th & 7th is direction, 8th - 16th hue, 17th Norandom
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* .tmp2 is tail length (gets longer every few hundred frames)
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* .life is the timer that kills the end of the tail (the head uses life for how often it grows longer)
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* .ctype Contains the colour, lost on save, regenerated using hue tmp (bits 7 - 16)
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*/
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#define TRON_HEAD 1
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#define TRON_NOGROW 2
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#define TRON_WAIT 4 //it was just created, so WAIT a frame
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#define TRON_NODIE 8
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#define TRON_DEATH 16 //Crashed, now dying
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#define TRON_NORANDOM 65536
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int tron_rx[4] = {-1, 0, 1, 0};
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int tron_ry[4] = { 0,-1, 0, 1};
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unsigned int tron_colours[32];
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static void init_graphics()
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{
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int i;
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int r, g, b;
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for (i=0; i<32; i++)
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{
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HSV_to_RGB(i<<4,255,255,&r,&g,&b);
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tron_colours[i] = r<<16 | g<<8 | b;
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}
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}
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static int update(UPDATE_FUNC_ARGS)
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{
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if (parts[i].tmp&TRON_WAIT)
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{
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parts[i].tmp &= ~TRON_WAIT;
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return 0;
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}
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if (parts[i].tmp&TRON_HEAD)
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{
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int firstdircheck = 0, seconddir = 0, seconddircheck = 0, lastdir = 0, lastdircheck = 0;
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int direction = (parts[i].tmp>>5 & 0x3);
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int originaldir = direction;
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//random turn
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int random = RNG::Ref().between(0, 339);
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if ((random==1 || random==3) && !(parts[i].tmp & TRON_NORANDOM))
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{
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//randomly turn left(3) or right(1)
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direction = (direction + random)%4;
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}
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//check in front
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//do sight check
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firstdircheck = trymovetron(sim,x,y,direction,i,parts[i].tmp2);
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if (firstdircheck < parts[i].tmp2)
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{
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if (parts[i].tmp & TRON_NORANDOM)
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{
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seconddir = (direction + 1)%4;
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lastdir = (direction + 3)%4;
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}
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else if (originaldir != direction) //if we just tried a random turn, don't pick random again
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{
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seconddir = originaldir;
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lastdir = (direction + 2)%4;
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}
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else
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{
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seconddir = (direction + (RNG::Ref().between(0, 1)*2)+1)% 4;
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lastdir = (seconddir + 2)%4;
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}
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seconddircheck = trymovetron(sim,x,y,seconddir,i,parts[i].tmp2);
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lastdircheck = trymovetron(sim,x,y,lastdir,i,parts[i].tmp2);
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}
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//find the best move
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if (seconddircheck > firstdircheck)
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direction = seconddir;
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if (lastdircheck > seconddircheck && lastdircheck > firstdircheck)
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direction = lastdir;
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//now try making new head, even if it fails
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if (new_tronhead(sim,x + tron_rx[direction],y + tron_ry[direction],i,direction) == -1)
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{
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//ohgod crash
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parts[i].tmp |= TRON_DEATH;
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//trigger tail death for TRON_NODIE, or is that mode even needed? just set a high tail length(but it still won't start dying when it crashes)
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}
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//set own life and clear .tmp (it dies if it can't move anyway)
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parts[i].life = parts[i].tmp2;
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parts[i].tmp &= parts[i].tmp&0xF818;
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}
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else // fade tail deco, or prevent tail from dying
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{
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if (parts[i].tmp&TRON_NODIE)
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parts[i].life++;
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//parts[i].dcolour = clamp_flt((float)parts[i].life/(float)parts[i].tmp2,0,1.0f) << 24 | parts[i].dcolour&0x00FFFFFF;
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}
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return 0;
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}
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static int graphics(GRAPHICS_FUNC_ARGS)
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{
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unsigned int col = tron_colours[(cpart->tmp&0xF800)>>11];
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if(cpart->tmp & TRON_HEAD)
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*pixel_mode |= PMODE_GLOW;
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*colr = (col & 0xFF0000)>>16;
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*colg = (col & 0x00FF00)>>8;
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*colb = (col & 0x0000FF);
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if(cpart->tmp & TRON_DEATH)
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{
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*pixel_mode |= FIRE_ADD | PMODE_FLARE;
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*firer = *colr;
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*fireg = *colg;
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*fireb = *colb;
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*firea = 255;
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}
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if(cpart->life < cpart->tmp2 && !(cpart->tmp & TRON_HEAD))
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{
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*pixel_mode |= PMODE_BLEND;
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*pixel_mode &= ~PMODE_FLAT;
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*cola = (int)((((float)cpart->life)/((float)cpart->tmp2))*255.0f);
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}
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return 0;
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}
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static void create(ELEMENT_CREATE_FUNC_ARGS)
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{
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int randhue = RNG::Ref().between(0, 359);
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int randomdir = RNG::Ref().between(0, 3);
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// Set as a head and a direction
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sim->parts[i].tmp = 1 | (randomdir << 5) | (randhue << 7);
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// Tail
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sim->parts[i].tmp2 = 4;
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sim->parts[i].life = 5;
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}
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static int new_tronhead(Simulation * sim, int x, int y, int i, int direction)
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{
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int np = sim->create_part(-1, x , y ,PT_TRON);
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if (np==-1)
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return -1;
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if (sim->parts[i].life >= 100) // increase tail length
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{
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if (!(sim->parts[i].tmp&TRON_NOGROW))
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sim->parts[i].tmp2++;
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sim->parts[i].life = 5;
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}
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//give new head our properties
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sim->parts[np].tmp = 1 | direction<<5 | (sim->parts[i].tmp&(TRON_NOGROW|TRON_NODIE|TRON_NORANDOM)) | (sim->parts[i].tmp&0xF800);
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if (np > i)
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sim->parts[np].tmp |= TRON_WAIT;
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sim->parts[np].ctype = sim->parts[i].ctype;
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sim->parts[np].tmp2 = sim->parts[i].tmp2;
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sim->parts[np].life = sim->parts[i].life + 2;
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return 1;
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}
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static int trymovetron(Simulation * sim, int x, int y, int dir, int i, int len)
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{
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int k,j,r,rx,ry,tx,ty,count;
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count = 0;
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rx = x;
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ry = y;
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for (k = 1; k <= len; k ++)
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{
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rx += tron_rx[dir];
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ry += tron_ry[dir];
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r = sim->pmap[ry][rx];
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if (canmovetron(sim, r, k-1) && !sim->bmap[(ry)/CELL][(rx)/CELL] && ry > CELL && rx > CELL && ry < YRES-CELL && rx < XRES-CELL)
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{
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count++;
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for (tx = rx - tron_ry[dir] , ty = ry - tron_rx[dir], j=1; abs(tx-rx) < (len-k) && abs(ty-ry) < (len-k); tx-=tron_ry[dir],ty-=tron_rx[dir],j++)
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{
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r = sim->pmap[ty][tx];
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if (canmovetron(sim, r, j+k-1) && !sim->bmap[(ty)/CELL][(tx)/CELL] && ty > CELL && tx > CELL && ty < YRES-CELL && tx < XRES-CELL)
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{
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if (j == (len-k))//there is a safe path, so we can break out
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return len+1;
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count++;
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}
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else //we hit a block so no need to check farther here
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break;
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}
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for (tx = rx + tron_ry[dir] , ty = ry + tron_rx[dir], j=1; abs(tx-rx) < (len-k) && abs(ty-ry) < (len-k); tx+=tron_ry[dir],ty+=tron_rx[dir],j++)
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{
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r = sim->pmap[ty][tx];
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if (canmovetron(sim, r, j+k-1) && !sim->bmap[(ty)/CELL][(tx)/CELL] && ty > CELL && tx > CELL && ty < YRES-CELL && tx < XRES-CELL)
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{
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if (j == (len-k))
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return len+1;
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count++;
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}
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else
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break;
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}
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}
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else //a block infront, no need to continue
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break;
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}
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return count;
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}
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static bool canmovetron(Simulation * sim, int r, int len)
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{
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if (!r || (TYP(r) == PT_SWCH && sim->parts[ID(r)].life >= 10) || (TYP(r) == PT_INVIS && sim->parts[ID(r)].tmp2 == 1))
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return true;
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if ((((sim->elements[TYP(r)].Properties & PROP_LIFE_KILL_DEC) && sim->parts[ID(r)].life > 0)|| ((sim->elements[TYP(r)].Properties & PROP_LIFE_KILL) && (sim->elements[TYP(r)].Properties & PROP_LIFE_DEC))) && sim->parts[ID(r)].life < len)
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return true;
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return false;
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}
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