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133 lines
4.7 KiB
Plaintext
133 lines
4.7 KiB
Plaintext
/// Component which handles Field of View masking for clients. FoV attributes are at /mob/living
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/datum/component/fov_handler
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/// Currently applied x size of the fov masks
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var/current_fov_x = BASE_FOV_MASK_X_DIMENSION
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/// Currently applied y size of the fov masks
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var/current_fov_y = BASE_FOV_MASK_Y_DIMENSION
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/// Whether we are applying the masks now
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var/applied_mask = FALSE
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/// The angle of the mask we are applying
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var/fov_angle = FOV_180_DEGREES
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/// The blocker mask applied to a client's screen
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var/atom/movable/screen/fov_blocker/blocker_mask
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/datum/component/fov_handler/Initialize(fov_type = FOV_180_DEGREES)
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if(!isliving(parent))
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return COMPONENT_INCOMPATIBLE
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var/mob/living/mob_parent = parent
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var/client/parent_client = mob_parent.client
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if(!parent_client) //Love client volatility!!
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qdel(src) //no QDEL hint for components, and we dont want this to print a warning regarding bad component application
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return
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ADD_TRAIT(mob_parent, TRAIT_FOV_APPLIED, REF(src))
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blocker_mask = new
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set_fov_angle(fov_type)
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on_dir_change(mob_parent, mob_parent.dir, mob_parent.dir)
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update_fov_size()
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update_mask()
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/datum/component/fov_handler/Destroy()
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var/mob/living/mob_parent = parent
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REMOVE_TRAIT(mob_parent, TRAIT_FOV_APPLIED, REF(src))
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if(applied_mask)
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remove_mask()
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if(blocker_mask) // In a case of early deletion due to volatile client
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QDEL_NULL(blocker_mask)
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return ..()
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/datum/component/fov_handler/proc/set_fov_angle(new_angle)
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fov_angle = new_angle
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blocker_mask.icon_state = "[fov_angle > 0 ? fov_angle : (360 + fov_angle)]"
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/// Updates the size of the FOV masks by comparing them to client view size.
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/datum/component/fov_handler/proc/update_fov_size()
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SIGNAL_HANDLER
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var/mob/parent_mob = parent
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var/client/parent_client = parent_mob.client
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if(!parent_client) //Love client volatility!!
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return
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var/list/view_size = getviewsize(parent_client.view)
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if(view_size[1] == current_fov_x && view_size[2] == current_fov_y)
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return
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current_fov_x = BASE_FOV_MASK_X_DIMENSION
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current_fov_y = BASE_FOV_MASK_Y_DIMENSION
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var/matrix/new_matrix = new
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var/x_shift = view_size[1] - current_fov_x
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var/y_shift = view_size[2] - current_fov_y
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var/x_scale = view_size[1] / current_fov_x
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var/y_scale = view_size[2] / current_fov_y
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current_fov_x = view_size[1]
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current_fov_y = view_size[2]
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if (fov_angle < 0)
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x_scale *= -1
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y_scale *= -1
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blocker_mask.transform = new_matrix.Scale(x_scale, y_scale)
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blocker_mask.transform = new_matrix.Translate(x_shift * 16, y_shift * 16)
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/// Updates the mask application to client by checking `stat` and `eye`
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/datum/component/fov_handler/proc/update_mask()
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SIGNAL_HANDLER
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var/mob/parent_mob = parent
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var/client/parent_client = parent_mob.client
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if(!parent_client) //Love client volatility!!
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return
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var/user_living = parent_mob != DEAD
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var/atom/top_most_atom = get_atom_on_turf(parent_mob)
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var/user_extends_eye = parent_client.eye != top_most_atom
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var/should_apply_mask = user_living && !user_extends_eye
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if(should_apply_mask == applied_mask)
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return
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if(should_apply_mask)
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add_mask()
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else
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remove_mask()
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/datum/component/fov_handler/proc/remove_mask()
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var/mob/parent_mob = parent
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var/client/parent_client = parent_mob.client
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// Prevents stupid ass hard deletes
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parent_mob.hud_used.always_visible_inventory -= blocker_mask
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if(!parent_client) //Love client volatility!!
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return
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applied_mask = FALSE
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parent_client.screen -= blocker_mask
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/datum/component/fov_handler/proc/add_mask()
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var/mob/parent_mob = parent
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var/client/parent_client = parent_mob.client
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if(!parent_client) //Love client volatility!!
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return
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applied_mask = TRUE
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parent_client.screen += blocker_mask
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parent_mob.hud_used.always_visible_inventory += blocker_mask
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/// When a direction of the user changes, so do the masks
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/datum/component/fov_handler/proc/on_dir_change(mob/source, old_dir, new_dir)
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SIGNAL_HANDLER
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blocker_mask.dir = new_dir
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/// When a mob logs out, delete the component
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/datum/component/fov_handler/proc/mob_logout(mob/source)
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SIGNAL_HANDLER
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qdel(src)
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/datum/component/fov_handler/RegisterWithParent()
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. = ..()
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RegisterSignal(parent, COMSIG_ATOM_DIR_CHANGE, PROC_REF(on_dir_change))
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RegisterSignal(parent, COMSIG_LIVING_DEATH, PROC_REF(update_mask))
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RegisterSignal(parent, COMSIG_LIVING_REVIVE, PROC_REF(update_mask))
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RegisterSignal(parent, COMSIG_MOB_CLIENT_CHANGE_VIEW, PROC_REF(update_fov_size))
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RegisterSignal(parent, COMSIG_MOB_RESET_PERSPECTIVE, PROC_REF(update_mask))
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RegisterSignal(parent, COMSIG_MOB_LOGOUT, PROC_REF(mob_logout))
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/datum/component/fov_handler/UnregisterFromParent()
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. = ..()
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UnregisterSignal(parent, list(COMSIG_MOB_RESET_PERSPECTIVE, COMSIG_ATOM_DIR_CHANGE, COMSIG_LIVING_DEATH, COMSIG_LIVING_REVIVE, COMSIG_MOB_LOGOUT))
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UnregisterSignal(parent, COMSIG_LIVING_COMBAT_MODE_TOGGLE) //SKYRAT EDIT ADDITION
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