add a test for the E3 reduced give quota.

foreign units receive only 50% of silver given to them.

Conflicts:
	tests/pool.lua

scripts/tests/e3a.lua

@@ -430,7 +430,6 @@ end
 
 function test_give_50_percent_of_money()
     local r = region.create(0, 0, "plain")
-    r.name = "50percent"
   local u1 = unit.create(faction.create("noreply@eressea.de", "human", "de"), r, 1)
   local u2 = unit.create(faction.create("noreply@eressea.de", "orc", "de"), r, 1)
   u1.faction.age = 10

src/give.c

@@ -95,21 +95,19 @@ static bool limited_give(const item_type * type)
 int give_quota(const unit * src, const unit * dst, const item_type * type,
   int n)
 {
-  static float divisor = -1;
+  float divisor;
 
-  if (divisor == 0 || !limited_give(type)) {
+  if (!limited_give(type)) {
     return n;
   }
   if (dst && src && src->faction != dst->faction) {
-    if (divisor < 0) {
       divisor = get_param_flt(global.parameters, "rules.items.give_divisor", 1);
       assert(divisor == 0 || divisor >= 1);
-    }
-    if (divisor >= 1) {
-      /* predictable > correct: */
-      int x = (int)(n / divisor);
-      return x;
-    }
+      if (divisor >= 1) {
+          /* predictable > correct: */
+          int x = (int)(n / divisor);
+          return x;
+      }
   }
   return n;
 }

src/kernel/unit.c

@@ -1214,8 +1214,8 @@ bool has_skill(const unit * u, skill_t sk)
 static int item_invis(const unit *u) {
     const struct resource_type *rring = get_resourcetype(R_RING_OF_INVISIBILITY);
     const struct resource_type *rsphere = get_resourcetype(R_SPHERE_OF_INVISIBILITY);
-    return i_get(u->items, rring->itype)
-        + i_get(u->items, rsphere->itype) * 100;
+    return (rring ? i_get(u->items, rring->itype) : 0)
+      + (rsphere ? i_get(u->items, rsphere->itype) * 100 : 0);
 }
 
 static int item_modification(const unit * u, skill_t sk, int val)

tests/pool.lua

@@ -17,7 +17,8 @@ function setup()
         },
         "keywords" : {
             "de" : {
-                "give" : "GIB"
+                "give" : "GIB",
+                "contact" : "KONTAKTIERE"
             }
         },
         "strings" : {
@@ -56,3 +57,18 @@ function test_give_from_faction()
     assert_equal(0, u2:get_item("money"))
     assert_equal(100, u3:get_item("money"))
 end
+
+function test_give_divisor()
+    eressea.settings.set("rules.items.give_divisor", 2)
+    local r = region.create(1, 1, "plain")
+    local f1 = faction.create("test@example.com", "human", "de")
+    local f2 = faction.create("test@example.com", "human", "de")
+    local u1 = unit.create(f1, r, 1)
+    local u2 = unit.create(f2, r, 1)
+    u2:add_order("KONTAKTIERE " .. itoa36(u1.id))
+    u1:add_item("money", 100)
+    u1:add_order("GIB " .. itoa36(u2.id) .. " 100 SILBER")
+    process_orders()
+    assert_equal(0, u1:get_item("money"))
+    assert_equal(50, u2:get_item("money"))
+end