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AI: Difference between revisions
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::Nevertheless, BSL does provide a function to make a character holster or unholster a weapon: [[chr_forceholster]]. In order to make a character holster a held weapon, this character has to be using a pistol or rifle animation variant (see [[TRAM]]). Since AI can use "walk_noaim" and "run_noaim" movement modes (which disable weapon variants, i.e., aiming with weapons), the weapon variant should be explicitly forced on via the BSL function [[chr_dontaim]]. Unholstering is easier: the character simply has to be be executing some aiming overlay-compatible animation at the moment when chr_forceholster is executed. That means standing, running, crouching, walking, and jumping are OK -- the function will succeed -- but attack animations or animations of getting hit are not OK and the function will fail. | ::Nevertheless, BSL does provide a function to make a character holster or unholster a weapon: [[chr_forceholster]]. In order to make a character holster a held weapon, this character has to be using a pistol or rifle animation variant (see [[TRAM]]). Since AI can use "walk_noaim" and "run_noaim" movement modes (which disable weapon variants, i.e., aiming with weapons), the weapon variant should be explicitly forced on via the BSL function [[chr_dontaim]]. Unholstering is easier: the character simply has to be be executing some aiming overlay-compatible animation at the moment when chr_forceholster is executed. That means standing, running, crouching, walking, and jumping are OK -- the function will succeed -- but attack animations or animations of getting hit are not OK and the function will fail. | ||
::*IMPORTANT NOTE: The AI must be "active" all the time in order to perform BSL animation checks ([[chr_wait_animation]]/[[chr_wait_animtype|animtype]]/[[chr_wait_animstate|animstate]] checks). Remember that Oni was developed mostly in the '90s, so various tricks were used to save memory and enhance performance. One technique was to make unseen characters (behind a wall, closed doors, etc.) go into an "inactive" mode, which means they are only stored in RAM as a structure, but no physics, collision checks, or drawing functions are performed on them in order to save system resources (and yes, that means inactive characters can [https://www.youtube.com/watch?v=GC4HLDekxQI walk in mid-air and pass through walls]). On the other hand, when a character is active, it is fully operational, with physics working, collisions being checked, and character being ready in graphics memory to be drawn any time. To make sure a character stays active requires either applying [[chr_lock_active]] to each AI, or (since computers have a lot more memory these days) simply setting [[chr_all_active]] to 1 to force all characters active. | ::*IMPORTANT NOTE: The AI must be "active" all the time in order to perform BSL animation checks ([[chr_wait_animation]]/[[chr_wait_animtype|animtype]]/[[chr_wait_animstate|animstate]] checks). Remember that Oni was developed mostly in the '90s, so various tricks were used to save memory and enhance performance. One technique was to make unseen characters (behind a wall, closed doors, etc.) go into an "inactive" mode, which means they are only stored in RAM as a structure, but no physics, collision checks, or drawing functions are performed on them in order to save system resources (and yes, that means inactive characters can [https://www.youtube.com/watch?v=GC4HLDekxQI walk in mid-air and pass through walls]). On the other hand, when a character is active, it is fully operational, with physics working, collisions being checked, and character being ready in graphics memory to be drawn any time. To make sure a character stays active requires either applying [[chr_lock_active]] to each AI, or (since computers have a lot more memory these days) simply setting [[chr_all_active]] to 1 to force all characters active. | ||
::Here is a simple example of a holster behavior scripted in BSL. A character is given a gun, then the weapon is holstered. When this AI notices an enemy and plays its startle animation, then an unholster is called for. [ | ::Here is a simple example of a holster behavior scripted in BSL. A character is given a gun, then the weapon is holstered. When this AI notices an enemy and plays its startle animation, then an unholster is called for. [https://www.youtube.com/watch?v=2WNMh8u5wBI This YouTube video] shows the script in action. | ||
#Setup of AI - gets spawned, forced to be always active, weapon gets holstered. | #Setup of AI - gets spawned, forced to be always active, weapon gets holstered. | ||