restructure: move mod files into plugin/ directory

plugin/data.lua

@@ -0,0 +1,63 @@
+local entity = table.deepcopy(data.raw["constant-combinator"]["constant-combinator"])
+entity.name = "signal-exporter"
+entity.minable.result = "signal-exporter"
+
+local purple = { r = 0.6, g = 0.1, b = 0.9, a = 1.0 }
+
+-- Recursively tints all layers of an animation definition, including any high-resolution versions.
+local function apply_tint_recursively(animation)
+    if not animation then return end
+
+    if animation.layers then
+        for _, layer in ipairs(animation.layers) do
+            layer.tint = purple
+        end
+    end
+
+    if animation.hr_version then
+        apply_tint_recursively(animation.hr_version)
+    end
+end
+
+-- Tints an Animation4Way structure by applying a tint to each of the four directions.
+local function tint_animation_4_way(animations)
+    if not animations then return end
+    for _, direction_animation in pairs(animations) do
+        apply_tint_recursively(direction_animation)
+    end
+end
+
+tint_animation_4_way(entity.sprites)
+tint_animation_4_way(entity.activity_led_sprites)
+
+if entity.activity_led_light then
+    entity.activity_led_light.color = purple
+end
+
+local item = table.deepcopy(data.raw["item"]["constant-combinator"])
+item.name = "signal-exporter"
+item.place_result = "signal-exporter"
+item.order = "c[combinators]-z[signal-exporter]"
+
+-- Replace the simple 'icon' with a tinted 'icons' table to color the UI icon.
+item.icon = nil
+item.icons = {
+    {
+        icon = "__base__/graphics/icons/constant-combinator.png",
+        icon_size = 64,
+        icon_mipmaps = 4,
+        tint = purple
+    }
+}
+
+local recipe = table.deepcopy(data.raw["recipe"]["constant-combinator"])
+recipe.name = "signal-exporter"
+recipe.result = "signal-exporter"
+
+-- Unlock this recipe with the same technology that unlocks the vanilla constant combinator.
+table.insert(data.raw.technology["circuit-network"].effects, {
+    type = "unlock-recipe",
+    recipe = "signal-exporter"
+})
+
+data:extend({entity, item, recipe})