Evoland: add epic games support

[bmdhacks]

Lotta people asked for this, so it now supports the epic games version.

[bmdhacks]

BTW if anyone wanted the source code to this binary, here's the change I added:

use crate::find_function_by_name;
use hlbc::opcodes::Opcode;
use hlbc::Bytecode;
/// Patch MergeTitle.loadButtonImage to unconditionally use "xboxone" button images.
///
/// The GOG/Steam version has `if (name == "windows" || true)` which always takes
/// the branch (the `|| true` was a compiled-in steam controller check). The Epic
/// version has just `if (name == "windows")`, so on Linux the name stays "linux"
/// and the game tries to load `button_a_linux.png` which doesn't exist.
///
/// GOG bytecode pattern (ops 9-12):
///   9: GetGlobal   reg10 = "windows"
///  10: JEq         if reg5 == reg10 jump to 13     ← short-circuit to assignment
///  11: Bool        reg11 = true
///  12: JFalse      if reg11 == false jump to 15     ← NOP this (dead branch)
///  13: GetGlobal   reg9 = "xboxone"
///  14: Mov         reg5 = reg9
///
/// Epic bytecode pattern (ops 9-12):
///   9: GetGlobal   reg10 = "windows"
///  10: JNotEq      if reg5 != reg10 jump to 13     ← NOP this
///  11: GetGlobal   reg9 = "xboxone"
///  12: Mov         reg5 = reg9
///
/// We scan for Call0 (systemName) followed by a JNotEq or JFalse that skips the
/// "xboxone" assignment, and NOP the jump.
pub fn apply(code: &mut Bytecode) {
    let findex = find_function_by_name(code, "$MergeTitle", "loadButtonImage");
    let findex = match findex {
        Some(f) => f,
        None => {
            println!("  MergeTitle.loadButtonImage not found — skipping");
            return;
        }
    };
    println!("  Patching MergeTitle.loadButtonImage (findex {}) platform check", findex.0);
    for fun in code.functions.iter_mut() {
        if fun.findex != findex {
            continue;
        }
        // Find Call0 (systemName), then scan forward for the conditional jump to NOP.
        let mut found_system_name = false;
        for i in 0..fun.ops.len() {
            if let Opcode::Call0 { .. } = &fun.ops[i] {
                // Verify this is followed by toLowerCase pattern (NullCheck + Call1)
                if i + 3 < fun.ops.len()
                    && matches!(&fun.ops[i + 1], Opcode::NullCheck { .. })
                    && matches!(&fun.ops[i + 2], Opcode::Call1 { .. })
                {
                    found_system_name = true;
                }
            }
            if !found_system_name {
                continue;
            }
            // Epic pattern: JNotEq that skips the "xboxone" assignment
            if let Opcode::JNotEq { .. } = &fun.ops[i] {
                println!("    NOP op {} (JNotEq) — force xboxone button images", i);
                fun.ops[i] = Opcode::Nop;
                return;
            }
            // GOG pattern: JFalse after Bool true — already a no-op in practice,
            // but NOP it for cleanliness
            if let Opcode::JFalse { .. } = &fun.ops[i] {
                println!("    NOP op {} (JFalse) — force xboxone button images", i);
                fun.ops[i] = Opcode::Nop;
                return;
            }
        }
        println!("  Warning: platform check pattern not found in loadButtonImage");
        return;
    }
    println!("  Warning: loadButtonImage function body not found");
}