Add Shrimp-person species

code/__DEFINES/achievements.dm

@@ -170,3 +170,4 @@
 
 /// Value in metadata version that signifies the achievement is archived
 #define ACHIEVEMENT_ARCHIVED_VERSION 9999
+#define THETHING_SCORE 0

code/modules/mob/living/carbon/human/species_types/shrimp.dm

@@ -0,0 +1,102 @@
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+// 🦐🦐🦐🦐🦐🦐🦐🦐🦐🦐
+//Subtype of human - Shrimp-person
+/datum/species/human/shrimp
+	name = "Shrimp"
+	id = SPECIES_SHRIMP
+	examine_limb_id = SPECIES_HUMAN
+	mutantbrain = /obj/item/organ/brain
+	mutanttongue = /obj/item/organ/tongue
+	mutantears = /obj/item/organ/ears
+	mutanteyes = /obj/item/organ/eyes
+	mutant_organs = list()
+	inherent_traits = list(
+		TRAIT_USES_SKINTONES,
+		TRAIT_WATER_BREATHING,      // 蝦人可以在水中呼吸
+		TRAIT_CAN_STRIP,
+		TRAIT_SWIMMING,
+	)
+	changesource_flags = MIRROR_BADMIN | WABBAJACK | MIRROR_PRIDE | MIRROR_MAGIC | RACE_SWAP | ERT_SPAWN | SLIME_EXTRACT
+	species_language_holder = /datum/language_holder/human
+	payday_modifier = 1.0
+	family_heirlooms = list(/obj/item/food/shell)
+	species_cookie = /obj/item/food/butter
+
+/datum/species/human/shrimp/on_species_gain(mob/living/carbon/human/human_who_gained_species, datum/species/old_species, pref_load, regenerate_icons = TRUE, replace_missing = TRUE)
+	. = ..()
+	// 蝦人額外特性：增加游泳速度，降低陸上速度
+	if(!pref_load)
+		human_who_gained_species.add_movespeed_modifier(/datum/movespeed_modifier/shrimp_land)
+		human_who_gained_species.add_movespeed_modifier(/datum/movespeed_modifier/shrimp_water)
+
+/datum/species/human/shrimp/on_species_loss(mob/living/carbon/human/human_who_lost_species)
+	. = ..()
+	human_who_lost_species.remove_movespeed_modifier(/datum/movespeed_modifier/shrimp_land)
+	human_who_lost_species.remove_movespeed_modifier(/datum/movespeed_modifier/shrimp_water)
+
+/datum/movespeed_modifier/shrimp_land
+	multiplicative_slowdown = 0.2  // 陸上稍慢
+
+/datum/movespeed_modifier/shrimp_water
+	multiplicative_slowdown = -0.2 // 水中稍快
+
+/datum/species/human/shrimp/get_physical_attributes()
+	return "Shrimp-people are crustacean-human hybrids, featuring tough exoskeletons and a natural affinity for water. \
+		They are excellent swimmers and can breathe underwater, but they move a bit slower on land."
+
+/datum/species/human/shrimp/get_species_description()
+	return "Shrimp-people are a genetic modification that splices human DNA with that of deep-sea shrimp. \
+		They are prized for their resilience and aquatic capabilities, often serving as deep-sea explorers and salvagers."
+
+/datum/species/human/shrimp/get_species_lore()
+	return list(
+		"Shrimp-people originated from experimental deep-sea adaptation programs, designed to allow humans to work in high-pressure, underwater environments. \
+			The resulting hybrids proved remarkably durable and quickly found roles in salvage, exploration, and underwater construction.",
+
+		"Despite their usefulness, Shrimp-people often face prejudice for their appearance and perceived 'otherness'. \
+			Many have formed tight-knit communities in coastal colonies and underwater habitats, where their skills are highly valued.",
+
+		"Modern Shrimp-people possess a unique blend of traits: a tough chitinous exoskeleton, the ability to breathe water, \
+			and a natural affinity for aquatic navigation. They are often employed in deep-sea mining, marine biology, and undersea salvage operations."
+	)
+
+/datum/species/human/shrimp/create_pref_unique_perks()
+	var/list/to_add = list()
+
+	to_add += list(
+		list(
+			SPECIES_PERK_TYPE = SPECIES_POSITIVE_PERK,
+			SPECIES_PERK_ICON = "water",
+			SPECIES_PERK_NAME = "Aquatic",
+			SPECIES_PERK_DESC = "Shrimp-people can breathe underwater and swim faster.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_POSITIVE_PERK,
+			SPECIES_PERK_ICON = "shield-alt",
+			SPECIES_PERK_NAME = "Exoskeleton",
+			SPECIES_PERK_DESC = "Shrimp-people have a tough outer shell that provides some damage resistance.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_NEUTRAL_PERK,
+			SPECIES_PERK_ICON = "running",
+			SPECIES_PERK_NAME = "Land Sluggishness",
+			SPECIES_PERK_DESC = "Shrimp-people move slightly slower on land compared to humans.",
+		),
+		list(
+			SPECIES_PERK_TYPE = SPECIES_NEGATIVE_PERK,
+			SPECIES_PERK_ICON = "dry",
+			SPECIES_PERK_NAME = "Dehydration",
+			SPECIES_PERK_DESC = "Shrimp-people need to stay moist; they suffer damage if out of water for too long.",
+		),
+	)
+	return to_add
+
+