feat: m4 teil 1 — beute, inventar und affixe

- data/: [[loot_tables]] und [[affixes]] als Registries; LootEntry mit
  guaranteed, nothing, table-in-table, count und affixes
- game/loot.rs: EINE Ziehmaschinerie fuer Gegenstaende und Affixe,
  Tiefendeckel gegen wechselseitigen Bezug
- PickUp zieht erst beim Aufheben (Ticket 16) — moeglich nur, weil alle
  Haufen dasselbe Symbol zeigen
- UseItem/Equip/Unequip/Drop, Inventar-Screen als Registry-Schleife
- Affixe im Attributpfad, in der Resistenz und in der Trigger-Suche;
  item_label stellt Affixnamen voran, item_price multipliziert Faktoren
- Room haelt eine loot_table (nicht je Haufen eine), Prefab-loot
  ueberschreibt die Etagentabelle

53 Tests. Offen aus M4: Handel.

mods/core/affixes.toml

@@ -0,0 +1,46 @@
+# Affixe (Ticket 07/16): eine benannte Modifikatorliste, die an einem EINZELNEN
+# Exemplar haengt. Strukturell dasselbe wie eine Charakteroption — der
+# Unterschied ist, woran sie haengt.
+#
+# Abstufungen sind EIGENE EINTRAEGE, keine Zahl am Exemplar: Eine Staerke je
+# Exemplar haette Save-Format (ID-Liste), Preisformel und Stapelregel auf einmal
+# gekostet. Mit Stufen kann der Modder seine Abstufungen benennen.
+
+[[affixes]]
+id           = "sharp"
+name         = "Scharfes"
+price_factor = 1.3
+modifiers    = [ { attribute = "damage", flat = 2 } ]
+
+[[affixes]]
+id           = "flaming"
+name         = "Flammendes"
+price_factor = 1.6
+modifiers    = [ { attribute = "damage", flat = 3 } ]
+triggers = [
+  { on = "attack_hit", chance = 0.25,
+    actions = [ { action = "damage", amount = 4, damage_type = "fire", target = "target" } ] },
+]
+
+[[affixes]]
+id           = "greater_flaming"
+name         = "Stark flammendes"
+price_factor = 2.4
+modifiers    = [ { attribute = "damage", flat = 6 } ]
+triggers = [
+  { on = "attack_hit", chance = 0.4,
+    actions = [ { action = "damage", amount = 9, damage_type = "fire", target = "target" } ] },
+]
+
+[[affixes]]
+id           = "sturdy"
+name         = "Robuste"
+price_factor = 1.4
+modifiers    = [ { attribute = "max_health", flat = 12 } ]
+
+[[affixes]]
+id           = "warding"
+name         = "Schirmende"
+price_factor = 1.8
+modifiers    = [ { attribute = "resistance", damage_type = "fire", flat = 20 },
+                 { attribute = "resistance", damage_type = "ice",  flat = 20 } ]

mods/core/floors.toml

@@ -16,6 +16,7 @@ rooms    = 7
 required = ["core:entrance", "core:stairs", "core:merchant"]
 prefabs  = [ { tag = "core:normal", weight = 10 } ]
 creatures = [ { id = "core:rat", weight = 10 } ]
+loot      = "core:floor_1_table"
 
 [[floors]]
 id       = "floor_2"
@@ -26,6 +27,7 @@ required = ["core:entrance", "core:stairs", "core:merchant"]
 prefabs  = [ { tag = "core:normal", weight = 10 },
              { tag = "core:treasure", weight = 2 } ]
 creatures = [ { id = "core:rat", weight = 6 }, { id = "core:skeleton", weight = 6 } ]
+loot      = "core:floor_1_table"
 
 [[floors]]
 id       = "floor_3"
@@ -36,6 +38,7 @@ required = ["core:entrance", "core:stairs", "core:merchant"]
 prefabs  = [ { tag = "core:normal", weight = 10 },
              { tag = "core:treasure", weight = 3 } ]
 creatures = [ { id = "core:rat", weight = 3 }, { id = "core:skeleton", weight = 8 }, { id = "core:ghoul", weight = 3 } ]
+loot      = "core:floor_3_table"
 
 [[floors]]
 id       = "floor_4"
@@ -46,6 +49,7 @@ required = ["core:entrance", "core:stairs", "core:merchant"]
 prefabs  = [ { tag = "core:normal", weight = 10 },
              { tag = "core:treasure", weight = 3 } ]
 creatures = [ { id = "core:skeleton", weight = 6 }, { id = "core:ghoul", weight = 8 } ]
+loot      = "core:floor_3_table"
 
 [[floors]]
 id       = "floor_5"
@@ -56,3 +60,4 @@ required = ["core:entrance", "core:stairs", "core:merchant"]
 prefabs  = [ { tag = "core:normal", weight = 10 },
              { tag = "core:treasure", weight = 4 } ]
 creatures = [ { id = "core:ghoul", weight = 8 }, { id = "core:bone_lord", weight = 2 } ]
+loot      = "core:floor_5_table"

mods/core/items.toml

@@ -53,3 +53,13 @@ triggers   = [
     when = { damage_type = "fire" },
     actions = [ { action = "damage", amount = 3, damage_type = "fire", target = "target" } ] },
 ]
+
+[[items]]
+id         = "bone_blade"
+name       = "Knochenklinge"
+base_price = 210
+slot       = "core:hand"
+symbol     = "/"
+color      = "magenta"
+modifiers  = [ { attribute = "damage", flat = 11 },
+               { attribute = "critical_chance", flat = 8 } ]

mods/core/loot.toml

@@ -0,0 +1,88 @@
+# Beutetabellen (Ticket 16). EINE Maschinerie fuer Gegenstaende und Affixe:
+# dieselben Gewichte, dieselbe Tabelle-in-Tabelle, dieselben Nieten.
+#
+# Gewichte statt Prozent — Prozente muessten sich auf 100 summieren, und ein
+# Eintrag, den ein Mod hinzufuegt, macht die Summe kaputt.
+#
+# Der MOD-EINHAENGEPUNKT ist Tabelle-in-Tabelle: Ein Mod legt seine eigene
+# Tabelle an, bindet `core:floor_3_table` als Untertabelle ein und haengt die
+# Etage um. Zwei gewoehnliche Ueberschreibungen, kein zweiter Mechanismus.
+
+# --- Affixe ---------------------------------------------------------------
+# Abstufungen sind EIGENE Eintraege mit kleinerem Gewicht, keine Zahl am
+# Exemplar. Deshalb erhoeht ein zusaetzlicher Zug auch die Chance auf die
+# staerkere Stufe.
+
+[[loot_tables]]
+id    = "weapon_affixes"
+rolls = "0-1"
+entries = [
+  { affix = "core:sharp",           weight = 6 },
+  { affix = "core:flaming",         weight = 3 },
+  { affix = "core:greater_flaming", weight = 1 },
+  { nothing = true,                 weight = 14 },
+]
+
+[[loot_tables]]
+id    = "armor_affixes"
+rolls = "0-1"
+entries = [
+  { affix = "core:sturdy", weight = 5 },
+  { affix = "core:warding", weight = 2 },
+  { nothing = true,        weight = 16 },
+]
+
+# --- Etagen ---------------------------------------------------------------
+
+[[loot_tables]]
+id    = "floor_1_table"
+rolls = "1-2"
+entries = [
+  { item = "core:health_potion", weight = 12, count = "1-2" },
+  { item = "core:gold",          weight = 10, count = "3-9" },
+  { item = "core:iron_sword",    weight = 2, affixes = "core:weapon_affixes" },
+  { item = "core:leather_cap",   weight = 2, affixes = "core:armor_affixes" },
+  { nothing = true,              weight = 8 },
+]
+
+[[loot_tables]]
+id    = "floor_3_table"
+rolls = "1-3"
+entries = [
+  { item = "core:health_potion", weight = 10, count = "1-2" },
+  { item = "core:gold",          weight = 10, count = "6-18" },
+  { item = "core:iron_sword",    weight = 3, affixes = "core:weapon_affixes" },
+  { item = "core:thorn_mail",    weight = 1, affixes = "core:armor_affixes" },
+  { table = "core:rare_table",   weight = 2 },
+  { nothing = true,              weight = 6 },
+]
+
+[[loot_tables]]
+id    = "floor_5_table"
+rolls = "2-3"
+entries = [
+  { item = "core:health_potion", weight = 8, count = "2-3" },
+  { item = "core:gold",          weight = 10, count = "15-40" },
+  { item = "core:iron_sword",    weight = 4, affixes = "core:weapon_affixes" },
+  { item = "core:thorn_mail",    weight = 3, affixes = "core:armor_affixes" },
+  { table = "core:rare_table",   weight = 4 },
+]
+
+[[loot_tables]]
+id    = "rare_table"
+rolls = "1-1"
+entries = [
+  { item = "core:bone_blade",  weight = 3, affixes = "core:weapon_affixes" },
+  { item = "core:thorn_mail",  weight = 4, affixes = "core:armor_affixes" },
+]
+
+# `guaranteed` nimmt an der Gewichtung nicht teil und kommt immer — mit
+# Gewichten allein laesst sich "sicher" nicht ausdruecken.
+[[loot_tables]]
+id    = "boss_table"
+rolls = "1-2"
+entries = [
+  { item = "core:bone_blade", guaranteed = true, affixes = "core:weapon_affixes" },
+  { item = "core:gold",       weight = 10, count = "50-120" },
+  { item = "core:health_potion", weight = 6, count = "2-4" },
+]