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https://github.com/yogstation13/Yogstation.git
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104 lines
2.5 KiB
Plaintext
104 lines
2.5 KiB
Plaintext
#define FORWARD -1
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#define BACKWARD 1
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/datum/construction
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var/list/steps
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var/atom/holder
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var/result
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var/list/steps_desc
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/datum/construction/New(atom)
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..()
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holder = atom
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if(!holder) //don't want this without a holder
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qdel(src)
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set_desc(steps.len)
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return
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/datum/construction/proc/next_step()
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steps.len--
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if(!steps.len)
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spawn_result()
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else
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set_desc(steps.len)
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return
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/datum/construction/proc/action(atom/used_atom,mob/user)
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return
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/datum/construction/proc/check_step(atom/used_atom,mob/user) //check last step only
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var/valid_step = is_right_key(used_atom)
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if(valid_step)
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if(custom_action(valid_step, used_atom, user))
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next_step()
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return 1
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return 0
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/datum/construction/proc/is_right_key(atom/used_atom) // returns current step num if used_atom is of the right type.
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var/list/L = steps[steps.len]
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if(istype(used_atom, L["key"]))
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return steps.len
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return 0
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/datum/construction/proc/custom_action(step, used_atom, user)
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return 1
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/datum/construction/proc/check_all_steps(atom/used_atom,mob/user) //check all steps, remove matching one.
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for(var/i=1;i<=steps.len;i++)
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var/list/L = steps[i];
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if(istype(used_atom, L["key"]))
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if(custom_action(i, used_atom, user))
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steps[i]=null;//stupid byond list from list removal...
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listclearnulls(steps);
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if(!steps.len)
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spawn_result()
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return 1
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return 0
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/datum/construction/proc/spawn_result()
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if(result)
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new result(get_turf(holder))
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qdel(holder)
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return
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/datum/construction/proc/set_desc(index as num)
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var/list/step = steps[index]
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holder.desc = step["desc"]
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return
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/datum/construction/reversible
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var/index
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/datum/construction/reversible/New(atom)
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..()
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index = steps.len
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return
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/datum/construction/reversible/proc/update_index(diff as num)
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index+=diff
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if(index==0)
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spawn_result()
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else
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set_desc(index)
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return
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/datum/construction/reversible/is_right_key(atom/used_atom) // returns index step
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var/list/L = steps[index]
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if(istype(used_atom, L["key"]))
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return FORWARD //to the first step -> forward
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else if(L["backkey"] && istype(used_atom, L["backkey"]))
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return BACKWARD //to the last step -> backwards
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return 0
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/datum/construction/reversible/check_step(atom/used_atom,mob/user)
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var/diff = is_right_key(used_atom)
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if(diff)
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if(custom_action(index, diff, used_atom, user))
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update_index(diff)
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return 1
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return 0
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/datum/construction/reversible/custom_action(index, diff, used_atom, user)
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return 1
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