Hands-On Usage
In special project-focused mods, you can use this effect to reward players with a proportional boost to prototype stage progress upon completing prerequisite tasks or events, accelerating research timelines. For example, within an option block of a research event, you can directly advance an associated special project by 10%:
option = {
name = my_event.1.a
sp:my_secret_weapon = {
add_project_progress_ratio = 0.1
}
}
You can also dynamically control the advancement amount through variables, making progress gains scale with game state (such as research investment increasing progress speed).
Synergy
[has_project_flag](/wiki/trigger/has_project_flag): Check whether the special project is in a specific stage or state before advancing progress, preventing reward triggers at inappropriate moments.
[set_project_flag](/wiki/effect/set_project_flag): Mark the project immediately after advancing progress to prevent the same event chain from triggering duplicate progress gains, implementing "one-time reward" logic.
[complete_prototype_reward_option](/wiki/effect/complete_prototype_reward_option): When progress reaches full value, pair this effect to trigger the prototype stage's reward options, forming a complete research completion workflow.
[add_dynamic_modifier](/wiki/effect/add_dynamic_modifier): Stack dynamic modifiers alongside progress increases to simulate how "accelerated research states" impact subsequent stages.
Common Pitfalls
- Silent failure from incorrect scope: This effect must execute within a
SPECIAL_PROJECT scope. Writing it directly in a country scope (e.g., owner = { add_project_progress_ratio = 0.1 }) produces no error but is completely ineffective—always enter the correct scope first using sp:project_key = { }.
- Assuming values can accumulate beyond 1: The input value is a ratio relative to the total progress required for completion. Passing values greater than 1 is logically meaningless and produces unpredictable behavior. For "instant completion," pair with
[complete_prototype_reward_option](/wiki/effect/complete_prototype_reward_option) rather than stacking excess ratio values.