Effects System: lord_effect: add mod backbone & register our effect…

…s for `speed`,`jump`,`health`. Relates to #1676

mods/lord/Game/lord_effects/init.lua

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+
+
+minetest.mod(function(mod)
+	require("lord_effects").init(mod)
+end)

mods/lord/Game/lord_effects/mod.conf

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+name = lord_effects
+depends = builtin, effects, physics, damage

mods/lord/Game/lord_effects/src/lord_effects.lua

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+
+
+_G.lord_effects = {
+	SPEED  = 'speed',
+	JUMP   = 'jump',
+	HEALTH = 'health',
+	-- BREATH = 'breath', TODO: #1678
+}
+
+
+local function register_effects()
+	effects.register(
+		effects.Effect:new(lord_effects.SPEED)
+			:on_start(function(self, player, amount)
+				physics.for_player(player):set({ speed = amount })
+			end)
+			:on_stop(function(self, player)
+				physics.for_player(player):set({ speed = 1 })
+			end)
+	)
+	effects.register(
+		effects.Effect:new(lord_effects.JUMP)
+			:on_start(function(self, player, amount)
+				physics.for_player(player):set({ jump = amount })
+			end)
+			:on_stop(function(self, player)
+				physics.for_player(player):set({ jump = 1 })
+			end)
+	)
+	effects.register(
+		effects.Effect:new(lord_effects.HEALTH)
+			:on_start(function(self, player, amount, duration)
+				damage.Periodical:for_player(player):start(damage.Type.FLESHY, amount, duration)
+			end)
+			:on_stop(function(self, player)
+			    -- Periodical Damage stops itself.
+			end)
+	)
+end
+
+
+return {
+	--- @param mod minetest.Mod
+	init = function(mod)
+		register_effects()
+	end,
+}