Thanks to everyone who tested out the first 4.2.0 beta! We managed to spot and fix a few of the major issues for beta2.

Wall jumping in Platformer scenes can now be enabled without causing builds to fail, and off-screen actors will no longer randomly appear on screen :-)

There's also a few new features like keyboard shortcuts for copy pasting scripts and the ability to lock an actor's direction during "Move To/Relative" events so you can have an actor move right while continuing to face left.

Application changes since 4.2.0 beta1

• Add ability to lock actor direction when using "Actor Move To/Relative" events so the actor does not change direction during movement
• Add copy (Ctrl/Cmd+C), paste (Ctrl/Cmd+V), paste before (Ctrl/Cmd+Shift+V), comment (Ctrl/Cmd+/) keyboard shortcuts to script event editor can be used when hovering mouse cursor over script event's title or when hoverring the "Add Event" button
• Add ability to select multiple script events using a checkbox on the right-hand side of each event title. Previously this was only possible using Shift+Click. When multiple events are selected, copy, paste, comment, and group commands apply to all selected events.
• Add _stackPushScriptValue helper for use in plugins @Phidias618
• Updated Italian localisation. @r3vit
• Add ability to lock player direction in Adventure scenes to only face horizontal directions @Mico27
• "Add Event" button now includes a Paste button when script events can be pasted
• Sprite Animation State select dropdowns now group states that are only used by a single sprite. States shared by multiple sprites appear ungrouped, and you can hover over them to see which sprites use them
• Fix broken values in EVENT_ENGINE_FIELD_SET carried over from 2.0.0 projects
• Fix issue where variables passed by reference in expressions within custom scripts would use incorrect values
• Fix issue where using actor properties in custom scripts would always return player properties
• Fix issue preventing storing presets for "Launch Projectile in Slot" events
• Fix issue where clicking on effect row in music editor in some cases could cause application to crash

Engine changes since 4.2.0 beta1

• Improve VM_STEP performance
• Free space in bank 0 by moving sin table to banked space and by converting cos/sin/isqrt to banked functions
• Fix wall jump typo in platformer scene type
• Fix issue where offscreen actors could flash onscreen for a few frames if manually activated
• Fix loading sprites with NULL tileset
• Optimize activate_actors_in_row and Optimize activate_actors_in_col
• Fix player to actor collision in adventure scene type
• Fix crash handler
• Fix staggering when player is moving in shmup scenes
• Spread actor screen boundary checks over multiple frames to improve performance
• Spread projectile collision checks over multiple frames
• Fix vm_actor_move_to interupt to stop actor on tile boundaries again
• Fix emotes when in 8x8 sprite mode
• Optimise actors_render performance by moving some checks to earlier in the function
• Add support for horizontal only player sprite in adventure scenes
• Add new optimised instructions for moving actors VM_ACTOR_MOVE_TO_INIT, VM_ACTOR_MOVE_TO_X, VM_ACTOR_MOVE_TO_Y, VM_ACTOR_MOVE_TO_XY, VM_ACTOR_MOVE_TO_SET_DIR_X, VM_ACTOR_MOVE_TO_SET_DIR_Y
• Optimise calls to projectile_launch when launch direction is axis aligned
• Use static variable for saving/restoring bank in scroll
• Use static variable for saving/restoring bank in projectiles
• Minor optimizations to the general banked data manipulation functions

The full list of changes can be found here https://github.com/chrismaltby/gb-studio/blob/develop/CHANGELOG.md#unreleased

As always if you spot any problems, please make sure to report an issue at https://github.com/chrismaltby/gb-studio/issues

Thanks,
Chris