1 files changed, 220 insertions, 0 deletions
diff --git a/internal/game/sys_science.go b/internal/game/sys_science.go
new file mode 100644
index 0000000..23aeef4
--- /dev/null
+++ b/internal/game/sys_science.go
@@ -0,0 +1,220 @@
+package game
+
+import (
+	"fmt"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+
+	"thehouseoficarus/internal/action"
+	"thehouseoficarus/internal/object"
+	"thehouseoficarus/internal/player"
+)
+
+type ModCategory string
+
+const (
+	ModCombat     ModCategory = "combat"
+	ModUtility    ModCategory = "utility"
+	ModEnchant    ModCategory = "enchant"
+	ModProcessing ModCategory = "processing"
+	ModTransport  ModCategory = "transport"
+)
+
+type ModDef struct {
+	ID          string         `yaml:"id"`
+	Name        string         `yaml:"name"`
+	Level       int            `yaml:"level"`
+	MaxHit      int            `yaml:"max_hit"`
+	BaseXP      int            `yaml:"base_xp"`
+	JunkCost    map[string]int `yaml:"junk_cost"`
+	Category    ModCategory    `yaml:"category"`
+	Element     string         `yaml:"element"`
+	Destination int            `yaml:"destination"`
+}
+
+var AllMods []*ModDef
+
+var modByID map[string]*ModDef
+
+func (g *Game) LoadMods() error {
+	dir := filepath.Join(g.DataDir, "modules")
+	AllMods = nil
+	modByID = make(map[string]*ModDef)
+	action.WalkYAMLDir(dir, func(path, id string, data []byte) error {
+		var m ModDef
+		if err := yaml.Unmarshal(data, &m); err != nil {
+			return nil
+		}
+		AllMods = append(AllMods, &m)
+		return nil
+	})
+	modByID = make(map[string]*ModDef, len(AllMods))
+	for _, m := range AllMods {
+		modByID[m.ID] = m
+	}
+	return nil
+}
+
+func GetMod(id string) *ModDef {
+	return modByID[id]
+}
+
+func FindMod(input string) *ModDef {
+	if m, ok := modByID[input]; ok {
+		return m
+	}
+	lower := strings.ToLower(strings.ReplaceAll(input, " ", "_"))
+	for _, m := range AllMods {
+		if strings.HasPrefix(m.ID, lower) {
+			return m
+		}
+	}
+	lowerSpace := strings.ToLower(input)
+	for _, m := range AllMods {
+		if strings.HasPrefix(strings.ToLower(m.Name), lowerSpace) {
+			return m
+		}
+	}
+	return nil
+}
+
+type chipEntry struct {
+	Input  string
+	Output string
+	Qty    int
+}
+
+var enchantMap = map[string]map[string]string{
+	"enchant_1": {
+		"sapphire_ring":     "ring_of_recoil",
+		"sapphire_necklace": "necklace_of_passage",
+		"sapphire_bracelet": "bracelet_of_clay",
+	},
+	"enchant_2": {
+		"emerald_ring":     "ring_of_dueling",
+		"emerald_necklace": "binding_necklace",
+		"emerald_bracelet": "bracelet_of_slaughter",
+	},
+	"enchant_3": {
+		"ruby_ring":     "ring_of_forging",
+		"ruby_necklace": "digsite_pendant",
+		"ruby_bracelet": "inoculation_bracelet",
+	},
+	"enchant_4": {
+		"diamond_ring":     "ring_of_life",
+		"diamond_necklace": "phoenix_necklace",
+		"diamond_bracelet": "abyssal_bracelet",
+	},
+}
+
+var chipMap = map[string]chipEntry{
+	"chip_sapphire": {"sapphire_bolts", "sapphire_bolts_e", 10},
+	"chip_emerald":  {"emerald_bolts", "emerald_bolts_e", 10},
+	"chip_ruby":     {"ruby_bolts", "ruby_bolts_e", 10},
+	"chip_diamond":  {"diamond_bolts", "diamond_bolts_e", 10},
+}
+
+func (g *Game) hasDeckEquipped(p *player.Player) bool {
+	itemID, ok := p.Equipment[object.SlotMainHand]
+	if !ok {
+		return false
+	}
+	def, err := g.ItemStore.Load(itemID)
+	if err != nil {
+		return false
+	}
+	return def.WeaponType == object.WeaponScience
+}
+
+func (g *Game) equippedProvidesJunk(p *player.Player) string {
+	itemID, ok := p.Equipment[object.SlotMainHand]
+	if !ok {
+		return ""
+	}
+	def, err := g.ItemStore.Load(itemID)
+	if err != nil {
+		return ""
+	}
+	return def.ProvidesJunk
+}
+
+func (g *Game) effectiveJunkCost(p *player.Player, mod *ModDef) map[string]int {
+	cost := make(map[string]int)
+	for k, v := range mod.JunkCost {
+		cost[k] = v
+	}
+
+	hasDeck := g.hasDeckEquipped(p)
+
+	if hasDeck {
+		delete(cost, "scrap_metal")
+	}
+
+	providesJunk := g.equippedProvidesJunk(p)
+	if providesJunk != "" {
+		delete(cost, providesJunk)
+	}
+
+	return cost
+}
+
+func (g *Game) hasJunkCost(p *player.Player, mod *ModDef) bool {
+	cost := g.effectiveJunkCost(p, mod)
+	for itemID, qty := range cost {
+		if p.CountItem(itemID) < qty {
+			return false
+		}
+	}
+	return true
+}
+
+func (g *Game) consumeJunkCost(p *player.Player, mod *ModDef) bool {
+	cost := g.effectiveJunkCost(p, mod)
+	for itemID, qty := range cost {
+		if !p.RemoveItem(itemID, qty) {
+			return false
+		}
+	}
+	g.AccountStore.SaveCharacter(p)
+	return true
+}
+
+func (g *Game) junkCostString(p *player.Player, mod *ModDef) string {
+	cost := g.effectiveJunkCost(p, mod)
+	delete(cost, "scrap_metal")
+	if len(cost) == 0 {
+		return "free"
+	}
+	var parts []string
+	for itemID, qty := range cost {
+		def, _ := g.ItemStore.Load(itemID)
+		name := itemID
+		if def != nil {
+			name = def.Name
+		}
+		name = strings.TrimSuffix(name, "junk")
+		if qty > 1 {
+			parts = append(parts, fmt.Sprintf("%d %s", qty, name))
+		} else {
+			parts = append(parts, name)
+		}
+	}
+	sort.Strings(parts)
+	return strings.Join(parts, ", ")
+}
+
+func (g *Game) totalEquipScienceAttack(p *player.Player) int {
+	total := 0
+	for _, itemID := range p.Equipment {
+		def, err := g.ItemStore.Load(itemID)
+		if err == nil {
+			total += def.Stats.ScienceAttack
+		}
+	}
+	return total
+}
+
+