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96 | |
96 | |
97 | =item $flag - A hashref that stores flags associated with the player and |
97 | =item $flag - A hashref that stores flags associated with the player and |
98 | can be seen by all NPCs (so better name your flags uniquely). This is |
98 | can be seen by all NPCs (so better name your flags uniquely). This is |
99 | useful for storing e.g. quest information. See C<@setflag> and C<@ifflag>. |
99 | useful for storing e.g. quest information. See C<@setflag> and C<@ifflag>. |
100 | |
100 | |
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101 | =item $find - see @find, below. |
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102 | |
101 | =back |
103 | =back |
102 | |
104 | |
103 | The environment is that standard "map scripting environment", which is |
105 | The environment is that standard "map scripting environment", which is |
104 | limited in the type of constructs allowed (no loops, for example). |
106 | limited in the type of constructs allowed (no loops, for example). |
105 | |
107 | |
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138 | Like C<@cond>, but proceed regardless of the outcome. |
140 | Like C<@cond>, but proceed regardless of the outcome. |
139 | |
141 | |
140 | =item @msg perl |
142 | =item @msg perl |
141 | |
143 | |
142 | Like C<@cond>, but the return value will be stringified and prepended to |
144 | Like C<@cond>, but the return value will be stringified and prepended to |
143 | the message. |
145 | the reply message. |
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146 | |
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147 | =item @check match expression |
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148 | |
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149 | Executes a match expression (see |
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150 | http://pod.tst.eu/http://cvs.schmorp.de/deliantra/server/lib/cf/match.pm) |
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151 | to see if it matches. |
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152 | |
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153 | C<self> is the npc object, C<object>, C<source> and C<originator> are the |
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154 | player communicating with the NPC. |
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155 | |
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156 | If the check fails, the match is skipped. |
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157 | |
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158 | =item @find match expression |
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159 | |
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160 | Like C<@check> in that it executes a match expression, but instead of |
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161 | failing, it gathers all objects into an array and provides a reference to |
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162 | the array in the C<$find> variable. |
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163 | |
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164 | When you want to skip the match when no objects have been found, combine |
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165 | C<@find> with C<@cond>: |
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166 | |
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167 | @match see my spellbook |
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168 | @find type=SPELLBOOK in inv |
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169 | @cond @$find |
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170 | It looks dirty. |
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171 | @match see my spellbook |
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172 | I can't see any, where do you have it? |
144 | |
173 | |
145 | =item @setstate state value |
174 | =item @setstate state value |
146 | |
175 | |
147 | Sets the named state C<state> to the given C<value>. State values are |
176 | Sets the named state C<state> to the given C<value>. State values are |
148 | associated with a specific player-NPC pair, so each NPC has its own state |
177 | associated with a specific player-NPC pair, so each NPC has its own state |
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171 | associated with a specific player and can be seen by all NPCs. with |
200 | associated with a specific player and can be seen by all NPCs. with |
172 | respect to a particular player, which makes them suitable to store quest |
201 | respect to a particular player, which makes them suitable to store quest |
173 | markers and other information (e.g. reputation/alignment). Flags are |
202 | markers and other information (e.g. reputation/alignment). Flags are |
174 | persistent over the lifetime of a player, so be careful :) |
203 | persistent over the lifetime of a player, so be careful :) |
175 | |
204 | |
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205 | Perversely enough, using C<@setfflag> without a C<value> clears the flag |
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206 | as if it was never set, so always provide a flag value (e.g. C<1>) when |
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207 | you want to set the flag. |
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208 | |
176 | See C<@ifflag> for an example. |
209 | See C<@ifflag> for an example. |
177 | |
210 | |
178 | =item @ifflag flag value |
211 | =item @ifflag flag value |
179 | |
212 | |
180 | Requires that the named C<flag> has the given C<value>, otherwise this |
213 | Requires that the named C<flag> has the given C<value>, otherwise this |
181 | topic is skipped. For more complex comparisons, see C<@cond> with |
214 | topic is skipped. For more complex comparisons, see C<@cond> with |
182 | C<$flag>. Example: |
215 | C<$flag>. |
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216 | |
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217 | If no C<value> is given, then the ifflag succeeds when the flag is true. |
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218 | |
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219 | Example: |
183 | |
220 | |
184 | @match I want to do the quest! |
221 | @match I want to do the quest! |
185 | @setflag kings_quest 1 |
222 | @setflag kings_quest 1 |
186 | Then seek out Bumblebee in Navar, he will tell you... |
223 | Then seek out Bumblebee in Navar, he will tell you... |
187 | @match I did the quest |
224 | @match I did the quest |
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245 | my @replies; |
282 | my @replies; |
246 | my @match; # @match/@parse command results |
283 | my @match; # @match/@parse command results |
247 | |
284 | |
248 | my $state = $self->{npc}{$self->{ob}->name}{dialog_state} ||= {}; |
285 | my $state = $self->{npc}{$self->{ob}->name}{dialog_state} ||= {}; |
249 | my $flag = $self->{ob}{dialog_flag} ||= {}; |
286 | my $flag = $self->{ob}{dialog_flag} ||= {}; |
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287 | |
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288 | my @find; |
250 | |
289 | |
251 | my %vars = ( |
290 | my %vars = ( |
252 | who => $self->{ob}, |
291 | who => $self->{ob}, |
253 | npc => $self->{npc}, |
292 | npc => $self->{npc}, |
254 | state => $state, |
293 | state => $state, |
255 | flag => $flag, |
294 | flag => $flag, |
256 | msg => $msg, |
295 | msg => $msg, |
257 | match => \@match, |
296 | match => \@match, |
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297 | find => \@find, |
258 | ); |
298 | ); |
259 | |
299 | |
260 | local $self->{ob}{record_replies} = \@replies; |
300 | local $self->{ob}{record_replies} = \@replies; |
261 | |
301 | |
262 | # now execute @-commands (which can result in a no-match) |
302 | # now execute @-commands (which can result in a no-match) |
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283 | |
323 | |
284 | } elsif ($cmd eq "eval") { |
324 | } elsif ($cmd eq "eval") { |
285 | cf::safe_eval $args, %vars; |
325 | cf::safe_eval $args, %vars; |
286 | warn "\@eval evaluation error: $@\n" if $@; |
326 | warn "\@eval evaluation error: $@\n" if $@; |
287 | |
327 | |
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328 | } elsif ($cmd eq "check") { |
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329 | eval { |
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330 | cf::match::match $args, $self->{ob}, $self->{npc}, $self->{ob} |
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331 | or next topic; |
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332 | }; |
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333 | warn "\@check evaluation error: $@\n" if $@; |
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334 | |
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335 | } elsif ($cmd eq "find") { |
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336 | @find = eval { |
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337 | cf::match::match $args, $self->{ob}, $self->{npc}, $self->{ob} |
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338 | }; |
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339 | warn "\@find evaluation error: $@\n" if $@; |
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340 | |
288 | } elsif ($cmd eq "msg") { |
341 | } elsif ($cmd eq "msg") { |
289 | push @replies, [$self->{npc}, (scalar cf::safe_eval $args, %vars)]; |
342 | push @replies, [$self->{npc}, (scalar cf::safe_eval $args, %vars)]; |
290 | |
343 | |
291 | } elsif ($cmd eq "setflag") { |
344 | } elsif ($cmd eq "setflag") { |
292 | my ($name, $value) = split /\s+/, $args, 2; |
345 | my ($name, $value) = split /\s+/, $args, 2; |
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298 | $value ? $state->{$name} = $value |
351 | $value ? $state->{$name} = $value |
299 | : delete $state->{$name}; |
352 | : delete $state->{$name}; |
300 | |
353 | |
301 | } elsif ($cmd eq "ifflag") { |
354 | } elsif ($cmd eq "ifflag") { |
302 | my ($name, $value) = split /\s+/, $args, 2; |
355 | my ($name, $value) = split /\s+/, $args, 2; |
303 | $flag->{$name} eq $value |
356 | defined $value ? $flag->{$name} eq $value |
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357 | : $flag->{$name} |
304 | or next topic; |
358 | or next topic; |
305 | |
359 | |
306 | } elsif ($cmd eq "ifstate") { |
360 | } elsif ($cmd eq "ifstate") { |
307 | my ($name, $value) = split /\s+/, $args, 2; |
361 | my ($name, $value) = split /\s+/, $args, 2; |
308 | $state->{$name} eq $value |
362 | $state->{$name} eq $value |