test.cairo

%lang starknet
from starkware.cairo.common.math import (signed_div_rem, sqrt)
from starkware.cairo.common.cairo_builtins import HashBuiltin

const FP = 10 ** 12
const RANGE_CHECK_BOUND = 2 ** 64
const FRICTION = 40 * FP

@event
func increase_balance_called(
    current_balance : felt, amount : felt
):
end

@view
func mul_fp {range_check_ptr} (
        a : felt,
        b : felt
    ) -> (
        c : felt
    ):
    # signed_div_rem by FP after multiplication
    #position.emit(aa, bb)
    let (c, _) = signed_div_rem(a * b, FP, RANGE_CHECK_BOUND)
    return (c)
end

@view
func div_fp {range_check_ptr} (
        a : felt,
        b : felt
    ) -> (
        c : felt
    ):
    #
    # multiply by FP before signed_div_rem
    #
    let (c, _) = signed_div_rem(a * FP, b, RANGE_CHECK_BOUND)
    return (c)
end


@view
func acc {range_check_ptr} (x: felt, y:felt) -> (c: felt):
    alloc_locals
    tempvar v_2 = x*x+y*y
    let (local v)  = sqrt (v_2)
    let a_mul_vx: felt = mul_fp(FRICTION, -1*x)
    let c: felt = div_fp(a_mul_vx, v)
    increase_balance_called.emit(x, c)
    return (c)
end

@external
func submit_move_for_level {syscall_ptr : felt*, pedersen_ptr : HashBuiltin*, range_check_ptr} (
        level : felt,
        move_x : felt,
        move_y : felt
    ) -> (
        is_solution : felt,
        is_solution_family_new : felt,
        solution_id : felt,
        solution_family : felt,
        score : felt
    ):
    return (0,0,0,0,0)
end