refactor: experience calculation efficiency and increase level cap

[omarcopires]

This pull request proposes a significant optimization in the experience calculation formula for the game Tibia. The new implementation brings several advantages in terms of performance and accuracy of the results.

1. Calculation Optimization:

• The original formula has been simplified, reducing the number of multiplications required to calculate experience.
• The new formula is designed to be more efficient, resulting in overall faster performance during experience calculation for each level.

3. Reduction of Overflow:

• With the decrease in the number of multiplications, the new formula significantly minimizes the occurrence of overflow, especially at higher levels.
• This results in a more stable and accurate gaming experience, allowing players to reach higher levels without encountering artificial limitations.

4. Expansion of Level Cap:

• Thanks to the efficiency of the new formula, players can now reach a maximum level of 1,034,406, compared to the previous limit of 717,217 with the old formula.
• This significantly expands the possibilities of progression in the game, providing players with a more challenging and rewarding goal.

5. Details of Changes:

Lua:

• The getExpForLevel function has been modified to use the new simplified formula.
• Now, experience calculation is performed more directly and efficiently, without compromising the accuracy of the results.

C++:

• The getExpForLevel function has been updated to accept and return uint64_t, ensuring compatibility and precision for higher level values.
• The new formula is implemented to optimize performance and stability during experience calculation.

6. Expected Impact:

• Significant improvements in game performance, especially during experience calculation for each level.
• Reduction in the occurrence of overflow, providing a more stable and accurate gaming experience.
• Expansion of the level cap, challenging players to reach new levels of progression.

These changes have been carefully tested and reviewed to ensure their integrity and effectiveness. We hope that this optimization positively contributes to the player experience in Tibia.

[un000000]

@omarcopires The title is misleading, as formula is correct (algebraically). You should change pull name, so it indicates problem with overflow, not formula itself.

[Chapeleiiro]

Could you also remove the limit on skills? There is no longer a need for it

[omarcopires]

Could you also remove the limit on skills? There is no longer a need for it

You need to check and find out what the current limit is, I believe it's not that simple!

[elsongabriel]

Following my tests and gpt checks, both formulas return the same result, so everything is fine.