93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/**
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* @file explosion.c
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*/
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#include "lephisto.h"
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#include "log.h"
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#include "pilot.h"
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#include "weapon.h"
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#include "spfx.h"
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#include "rng.h"
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#include "explosion.h"
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/**
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* @brief Does explosion in a radius (damage and graphics).
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* @param x X position of explosion center.
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* @param y Y position of explosion center.
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* @param vx X velocity of explosion center.
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* @param vy Y velocity of explosion center.
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* @param radius Radius of the explosion.
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* @param dtype Damage type.
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* @param damage Damage amount.
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* @param parent Parent of the explosion, 0 is none.
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* @param mode Defines the explosion behaviour.
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*/
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void expl_explode(double x, double y, double vx, double vy,
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double radius, DamageType dtype, double damage,
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unsigned int parent, int mode) {
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int i, n;
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double a, d;
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double area;
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double ex, ey;
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double layer;
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int efx;
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int exp_s, exp_m, exp_l;
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/* Standard stuff. */
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exp_s = spfx_get("ExpS");
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exp_m = spfx_get("ExpM");
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exp_l = spfx_get("ExpL");
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layer = SPFX_LAYER_FRONT;
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/* Number of explosions. */
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area = M_PI * pow2(radius);
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n = (int)(area / 100.);
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/* Create explosions. */
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for(i = 0; i < n; i++) {
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/* Get position. */
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a = RNGF()*360.;
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d = RNGF()*(radius-5.) + 5.;
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ex = d*cos(a);
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ey = d*sin(a);
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/* Create explosion. */
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efx = (RNG(0,2)==0) ? exp_m : exp_s;
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spfx_add(efx, x+ex, y+ey, vx, vy, layer);
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}
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/* Final explosion. */
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spfx_add(exp_l, x, y, vx, vy, layer);
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/* Run the damage. */
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if(damage > 0.)
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expl_explodeDamage(x, y, radius, dtype, damage, parent, mode);
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}
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/**
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* @fn
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*
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* @brief
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*/
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void expl_explodeDamage(double x, double y, double radius,
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DamageType dtype, double damage,
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unsigned int parent, int mode) {
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/* Explosion affects ships. */
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if(mode & EXPL_MODE_SHIP)
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pilot_explode(x, y, radius, dtype, damage, parent);
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/* Explosion affects missiles and bolts. */
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if((mode & EXPL_MODE_MISSILE) && (mode & EXPL_MODE_BOLT))
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weapon_explode(x, y, radius, dtype, damage, parent, mode);
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/* Explosion affects missiles. */
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else if(mode & EXPL_MODE_MISSILE)
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weapon_explode(x, y, radius, dtype, damage, parent, mode);
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/* Explosion affects bolts. */
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else if(mode & EXPL_MODE_BOLT)
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weapon_explode(x, y, radius, dtype, damage, parent, mode);
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}
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