[Add] Some more beam support stuff.

src/weapon.c

@@ -73,6 +73,7 @@ static void weapon_destroy(Weapon* w, WeaponLayer layer);
 static void weapon_free(Weapon* w);
 /* Think. */
 static void think_seeker(Weapon* w, const double dt);
+static void think_beam(Weapon* w, const double dt);
 /*static void think_smart(Weapon* w, const double dt);*/
 /* Extern. */
 void weapon_minimap(const double res, const double w,
@@ -177,48 +178,41 @@ static void think_seeker(Weapon* w, const double dt) {
   /*limit_speed(&w->solid->vel, w->outfit->u.amm.speed, dt);*/
 }
 
-/* ========================================================
+/**
- *  Smart seeker brain. Much better at homing.
+ * @fn static void think_beam(Weapon* w, const double dt)
- * ========================================================
+ *
+ * @brief The Pseudo-ai of the beam weapons.
+ *    @param w Weapon to do the thinking.
+ *    @return dt Current delta tick.
  */
-#if 0
+static void think_beam(Weapon* w, const double dt) {
-static void think_smart(Weapon* w, const double dt) {
+  (void) dt;
-  Vec2 sv, tv;
+  Pilot* p;
-  double t;
-
-  if(w->target == w->parent) return; /* No self shooting here. */
-
-  Pilot* p = pilot_get(w->target); /* No null pilots.. */
 
+  /* Get pilot, if pilot is dead beam is destroyed too. */
+  p = pilot_get(w->parent);
   if(p == NULL) {
-    limit_speed(&w->solid->vel, w->outfit->u.amm.speed, dt);
+    w->timer = -1; /* Hack to make it get destroyed next update. */
     return;
   }
 
-  /* Ammo isn't locked on yet. */
+  /* Update beam position to match pilot. */
-  if(w->lockon < 0.) {
+  w->solid->pos.x = p->solid->pos.x;
-    vect_cset(&tv, VX(p->solid->pos) + dt*VX(p->solid->vel),
+  w->solid->pos.y = p->solid->pos.y;
-              VY(p->solid->pos) + dt*VY(p->solid->vel));
 
-    vect_cset(&sv, VX(w->solid->pos) + dt*VX(w->solid->vel),
+  /* Handle aiming. */
-              VY(w->solid->pos) + dt*VY(w->solid->vel));
+  switch(w->outfit->type) {
-
+    case OUTFIT_TYPE_BEAM:
-    t = -angle_diff(w->solid->dir, vect_angle(&tv, &sv));
+      w->solid->dir = p->solid->dir;
-
+      break;
-    w->solid->dir_vel = t * w->outfit->u.amm.turn; /* Face the target. */
+    case OUTFIT_TYPE_TURRET_BEAM:
-
+      /** @todo Have beam turret aim independently. */
-    if(w->solid->dir_vel > w->outfit->u.amm.turn)
+      w->solid->dir = p->solid->dir;
-      w->solid->dir_vel = w->outfit->u.amm.turn;
+      break;
-    else if(w->solid->dir_vel < -w->outfit->u.amm.turn)
+    default:
-      w->solid->dir_vel = -w->outfit->u.amm.turn;
+      return;
   }
-
-  vect_pset(&w->solid->vel, w->outfit->u.amm.speed, w->solid->dir);
-
-  limit_speed(&w->solid->vel, w->outfit->u.amm.speed, dt);
-
 }
-#endif
 
 /* Update all the weapon layers. */
 void weapons_update(const double dt) {
@@ -339,7 +333,7 @@ static void weapon_render(const Weapon* w) {
 static void weapon_update(Weapon* w, const double dt, WeaponLayer layer) {
   int i, wsx, wsy, psx, psy;
   glTexture* gfx;
-  Vec2 crash;
+  Vec2 crash[2];
 
   gfx = outfit_gfx(w->outfit);
 
@@ -353,14 +347,30 @@ static void weapon_update(Weapon* w, const double dt, WeaponLayer layer) {
 
     if(w->parent == pilot_stack[i]->id) continue; /* Hey! That's you. */
 
+    /* Beam weapons have special collisions. */
+    if(outfit_isBeam(w->outfit)) {
+      if(!areAllies(w->faction, pilot_stack[i]->faction) &&
+          CollideLineSprite(&w->solid->pos, w->solid->dir,
+            w->outfit->u.bem.range,
+            pilot_stack[i]->ship->gfx_space, psx, psy,
+            &pilot_stack[i]->solid->pos,
+            crash)) {
+
+        /** @todo beam_hit Needs it's own function. */
+
+        /* No return because beam can still think, it's not
+         * destroyed like the other weapons. */
+      }
+    }
+
     /* Smart weapons only collide with  their target. */
-    if(weapon_isSmart(w)) {
+    else if(weapon_isSmart(w)) {
       if((pilot_stack[i]->id == w->target) &&
           CollideSprite(gfx, wsx, wsy, &w->solid->pos,
             pilot_stack[i]->ship->gfx_space, psx, psy, &pilot_stack[i]->solid->pos,
-            &crash)) {
+            &crash[0])) {
         
-        weapon_hit(w, pilot_stack[i], layer, &crash);
+        weapon_hit(w, pilot_stack[i], layer, &crash[0]);
         return;
       }
       /* Dumb weapons hit anything not of the same faction. */
@@ -368,9 +378,9 @@ static void weapon_update(Weapon* w, const double dt, WeaponLayer layer) {
           !areAllies(w->faction, pilot_stack[i]->faction) &&
           CollideSprite(gfx, wsx, wsy, &w->solid->pos,
             pilot_stack[i]->ship->gfx_space, psx, psy, &pilot_stack[i]->solid->pos,
-            &crash)) {
+            &crash[0])) {
         
-        weapon_hit(w, pilot_stack[i], layer, &crash);
+        weapon_hit(w, pilot_stack[i], layer, &crash[0]);
         return;
       }
     }
@@ -475,6 +485,14 @@ static Weapon* weapon_create(const Outfit* outfit, const double dir, const Vec2*
         w->solid->pos.y + w->solid->vel.y);
     break;
 
+    /* Beam weapons are treated together. */
+    case OUTFIT_TYPE_BEAM:
+    case OUTFIT_TYPE_TURRET_BEAM:
+      mass = 1.;
+      w->solid = solid_create(mass, dir, pos, NULL);
+      w->think = think_beam;
+      break;
+  
   /* Treat seekers togther. */
   case OUTFIT_TYPE_MISSILE_SEEK_AMMO:
   case OUTFIT_TYPE_MISSILE_SEEK_SMART_AMMO: