Add chase_pointer to the memory module

[vabold]

Related to TASLabz/mkw-scripts#12.

The current MKW implementation looks like this:

from dolphin import memory


def chase_pointer(base_address: int, offsets: List, data_type: str):
    current_address = memory.read_u32(base_address)
    for offset in offsets:
        value_address = current_address + offset
        current_address = memory.read_u32(current_address + offset)
    data_types = {
        'u8': memory.read_u8,
        'u16': memory.read_u16,
        'u32': memory.read_u32,
        'u64': memory.read_u64,
        's8': memory.read_s8,
        's16': memory.read_s16,
        's32': memory.read_s32,
        's64': memory.read_s64,
        'f32': memory.read_f32,
        'f64': memory.read_f64,
        'vec3': vec3.read,
        'mat34': mat34.read,
        'quatf': quatf.read,
    }
    return data_types[data_type](value_address)

While vec3, mat34, and quatf are part of the EGG and nw4r libraries, the data_types dict should be extendable dynamically for game-specific implementations. The ideal usecase of this dict is for reading a datatype regularly created on the stack.

We should have a global data_types dict that scripts can append to.

[ximk]

It might be worth taking a look at how the memory watch inside dolphin works: Code.

[ximk]

Is this still planned?