ApplyEffect implementation

[heinezen]

Implements a system to use the ApplyEffect ability of the nyan API.

Resolves #671

• Depends on Allow retrieving nyan::Object handle as shared_ptr nyan#124
• Depends on Handle casting from ValueHolder to specific Value directly in nyan API nyan#125
• Depends on nyan data API 0.6.0 #1778

Other Features

• Curves: Curves now support removing redundant keyframes (i.e. keyframes that can safely be deleted without changing any values on the curve). Every curve now has "compression" methods that detect and remove these keyframes. Compression can start at a specific simulation time, so that only the last X keyframes of a curve are compressed. We now use this compression in the renderer, so that animations are timed correctly. It will also be useful for networking to keep the curves small.
• Renderer/Input: We now support targeting of other game entities using the ID texture created by the renderer (which writes game entity IDs to a texture). The controllers in the input system can use this texture to look up the ID of the game entity that was targeted.
• Activities: Severa new conditions where added for applying effects, e.g. to check if a target is in range. There are also new node types for internal tasks and switching branches in the graph. Condition functions for XOR gates are now passed the nyan object that they are based on to allow giving more context for evaluating the condition.

[paaspaas00]

Hey @heinezen , what's the state of this PR? Is it ready-ish or faraway? Maybe you can add some details in here

[Copilot]

Copilot reviewed 95 out of 96 changed files in this pull request and generated no comments.

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• libopenage/curve/CMakeLists.txt: Language not supported

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libopenage/curve/continuous.h:77

• The 'compress' parameter in set_insert is declared but not used; if compression is intended for insertions, consider incorporating this flag into the implementation or removing it to avoid confusion.

void Continuous<T>::set_insert(const time::time_t &t, const T &value, bool /* compress */) {