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Fixes for custom Wolf3D campaigns

• Add support for detecting Linux steam installation of Wolf3D/SoD #709
• Fix game crashing on Windows steam Wolf3D/SoD if installed on the same drive #710

Support for Wolfenstein 3D and Spear of Destiny

Game

• Add support for vehicles #30
• Add support for multi-guns
• Add support for custom wreck objects and bullets (allows respawning actors on death)
• Add support for custom actor death animation
• Add option to skip debrief menu
• Fix game freeze when returning to game after leaving it paused for a while
• Fix duplicate missions in level select
• Improve performance by adding max particle limit
• Improve level select menu with max items limit
• Improve game start menu by disabling continue option after campaign complete

Editor

• Fix loading a campaign with less missions showing a blank mission #670
• Add per-mission option to persist weapons (can reset weapons on certain missions)
• Change map shortcut key to tab

Different weapon sprites, AI improvements

Game

• Add weapon sprites #455
• Add molotov glass break sound
• Add AI waking to gunfire
• Add AI peripheral vision
• Add AI wake on seeing teammate under attack
• Fix feet colors for classic campaigns
• Fix sliding diagonally against map objects and getting stuck
• Fix player not getting poisoned
• Fix AI not waking when seeing player
• Fix co-op AI not shooting
• Fix missing bullet hole marks
• Fix minor typo in campaign
• Improve save file with saved weapons and ammo
• Improve save file, saves individual missions completed
• Improve gun dropping, limit gun drops after 2 are present
• Improve ammo dropped by enemies by halving amount
• Improve character previews by showing gun
• Improve weapon selection screen with character rotation
• Improve text particles by drawing above everything
• Improve pulse animation by doubling its frequency

Editor

• Add character deafness flag
• Add custom character item drops
• Add separate bullet flesh/object hit properties (bullets can hit actors but not map objects)
• Fix loading classic campaigns via drag-drop
• Fix tooltip for immunity flag
• Improve character previews by showing gun

Game

• Fix LAN bugs (#702, reported by @nixinator)
• Fix crash if laser sight is enabled (#703, reported by @sumater)
• Fix crash in AI Insurgency II campaign (#704, reported by @viki-t-s)
• Add dual-wielded pistols (#661)
• Add pistol and chaingun gun models (#455)
• Add score text popup on collecting score pickups
• Improve AI by waking immediately on being hit
• Improve AI by not reacting immediately on wake
• Improve changing volume options by not rewinding music

Editor / Modding

• Fix "HitsObjects": false behavior for bullets, should not damage map objects if set
• Add highlights to walk-through walls
• Add customizable door auto-close delay in campaign options
• Add ability to set character direction in static map type
• Add customizable special damage duration in bullets.json
• Add customizable corpse map object in character_classes.json
• Change map object placement to allow them to be placed over ones with 0 health (e.g. wrecks, blood pools)
• Change macOS keyboard modifier to command ⌘ (e.g. access character editor using command ⌘ + E)

Fix frequent hangs at game startup, and add live background

• Add live backgrounds #62
• Add pigtails hair
• Fix frequent hangs at game startup, interior map generator
• Fix alert sounds for invisible characters
• Fix donut hair

New interior map type, plus other enhancements and fixes

Game

• Add building interior map generator #213
• Add mouse controls for menus #676
• Add fists weapon #691
• Add custom footstep sounds for bones character class #689
• Add auto-play --demo mode
• Fix crash when changing options #694 (reported by @viki-t-s)
• Fix score popups not updating position #695
• Fix friendly fire from status-inducing weapons e.g. poison
• Fix flower not dropping pickups
• Improve options menus with left/right arrows
• Change menu sounds
• Change hitsounds enabled on invulnerable characters

Editor

• Add some new tile types and map objects e.g. cobble wall
• Add ability to place map objects of different types on same tile
• Add random door position option for classic/interior map types
• Add collapse UI area via grave key `
• Fix flood fill crashing when applied at map edge
• Fix non-solid map objects added repeatedly at same position

Fix loading classic campaigns, and some miscellaneous enhancements

• Fix loading classic campaigns #692 (reported by @viki-t-s)
• Fix PVP rounds not ending
• Fix missing mouse cursor and trail
• Fix linux build #683 (@bayandin, reported by @katp32)
• Fix dogfight scores not updated properly
• Add peaked cap hat #687
• Add soldier body type #13
• Improve weapon equip menu, show available weapons, allow gun swapping #629 #630 (reported by @Wuzzy2)
• Improve game startup by skipping mission briefing if it is empty #688

Fix freeze when slow moving bullets wall bounce #684 #686 (reported by @STRRRRR and @karjonas)