Mission 3/Mission 3.zip/Mission 3.iso/spiele/sgac/manual/chapter4.doc

Text File | 1989-07-28 | 8KB | 199 lines

                        Chapter four

                        (Other Zones)

   Lines 4150 to 4440  (Speak Events)

 These zones are used for speaking to characters on screen, using
 them are easy, if you have set them with the creator then you
 can access them like this.

 4150 if Z=1 and LOCATION=4 then print MESSAGE$(9) : DONE=1

 So by clicking on a character with the Speak Option enables you
 to speak, this line checks if Speak Zone 1 has been clicked on
 and the player's at location four.

 You could use a Speak Event to ask a character for an object,
 this would bring the object from the not created location to the
 players carried location like so.

 4160 if Z=2 and LOCATION=10 and OBLOC(3)=NC then OBLOC(3)=CARRIED
      : print MESSAGE$(12) : DONE=1

 Don't forget the DONE=1 at the end of each line, also remember to
 add the "and LOCATION=" part to the line otherwise the game will
 carry out the line in every location with Speak Zones.

   Lines 4740 to 5030  (Give Events)

 Give Events are used in the same way as Speak Events except we
 use it to give objects to another Character.

 Every time the Give option is used in the game, the Object ID
 word is entered into a varible called GIVE$, so we can check for
 an object being given to a character like this.

 4740 if GIVE$="Bag" and Z=1 and LOCATION=15 and BAG=0 then
        OBLOC(10)=NC : BAG=1 : print MESSAGE$(12) : DONE=1

 Note the varible BAG, this is set to nought if the character
 does'nt have the bag or set to one if he does.

 You could use a Special Examine Location Event to tell the player
 that the character has the bag.

   Lines 5790 to 6080  (Open Events)

 Enter in the same way as speak events but used to open.

  Example:

 5790 if Z=1 and LOCATION=8 and DO=0 then MAP(8,1)=9 : DO=1 :
       print MESSAGE$(20) : DONE=1

 The varible DO would be set to 0 if closed and 1 if open. Note
 the MAP array is used to connect Exit Zone 1 to location 9.

   Lines 6240 to 6530  (Close Events)

 Same as open but used to close things that are open.

  Example:

 6240 if Z=1 and LOCATION=8 and DO=1 then MAP(8,1)=0 : DO=0 :
       print MESSAGE$(14) : DONE=1

 Note how we now set the DO varible to nought to indicate the door
 is closed, the Exit Zone is also un-connected.

   Lines 6750 to 7040  (Special Wear Events)

 Normally, any object selected to wear would go to the Wear
 location and the game tells the player he's wearing it. But if
 the player puts on a robe, it could have special effects on him.

 The Object ID word goes into a varible called WEAR$ so we can use
 this to make wearing the robe create a magical effect.

  6750 if WEAR$="Robe" then print MESSAGE$(15) : ROBE=1

 Game message 15 could give the player the power to speak to
 creatures in there own language, this is indicated by the ROBE
 varible which is set to 1 if he can.

   Lines 7250 to 7540  (Special Remove Events)

 As with Remove, this section deals with things happening when an
 object is removed, removing your clothes would cause no problems
 in your own house but removing them in the street could get you
 in trouble. The Object's ID word is entered in a varible called
 RE$ and is used like this.

 7250 if RE$="Clothes" and LOCATION>5 then print MESSAGE$(22) :
       goto DEATH

 This line would end the game if you removed your clothes in the
 street, note that the line checks if the player is in one of the
 locations from five onwards, the first five locations could be
 the rooms of your house and the rest could be outside.

   Lines 7740 to 8030  (Use Object Events)

 Using an object could apply to anything from using a lamp to
 light it or using a using a guitar, meaning, play it. The Object
 ID word is entered into a USE$ varible and used like this.

  7740 if USE$="Guitar" then print MESSAGE$(6) : DONE=1

 This line allows you to play the guitar in any location but it
 can easily be changed to happen at a certain location to create
 an effect where the above line would just allow the player to
 play the guitar and get no responce.

 You can also use an Event to light a lamp by defining a lit lamp
 and an unlit lamp and use the method concern the Vase and Broken
 Vase in Chapter three.

   Lines 8170 to 8460  (Use on Events)

 These events are used for using an object on part of the location
 picture which can range from using a key on a door to open it or
 using a sword on a dragon to kill it.

 This is done with the USE$ varible and Use Zones like this.

 8170 if USE$="Sword" and Z=3 and LOCATION=10 and DRAGON=1 then
       DRAGON=0 : print MESSAGE$(30) : SC=SC+50 : DONE=1

 So this line allows you to use a sword on a dragon which is then
 killed, using this method to unlock a door could be done the same
 way by simply setting a varible to indicate the state of the
 door, nought if locked and one if unlocked.

   Lines 8640 to 8940  (Consume Events)

 You can use these events to allow the player to eat or drink
  something, this line allows the player to eat a cake.

  8640 if CONSUME$="Cake" then OBLOC(1)=NC : print MESSAGE$(1) :
        DONE=1

 So, once the cake is eaten, it leaves the game by becoming a not
 created object, if you wanted the cake to contain poison which
 kills the player when he eats it, all you have to do is add a
 "goto DEATH" at the end of the above line.

   Lines 9000 onwards (Your own routines)

 This section is for your own bits that you may want to add to the
 game to make it more interesting, it is mainly used to make
 characters appear on location pictures.

 Inside the Garden.dat folder is the source code for Grannies
  Garden, if you load it and list lines 9000 onwards you will see
  that we can use the Stos "screen$" command to put the characters
  on screen. Here is a step by step guide to doing it.

 Draw the picture of your character using an art package

 Reserve a spare Stos bank and load your picture into it.

 Example: reserve as datascreen 4 : load"dwarf.pi1",4

 Load the Stos mouse accessory and get the co-ordinates of the
 picture starting from the top left hand corner of the drawing and
 noting down the X and Y numbers then do the same for the bottom
 right hand corner of the drawing.

 We can now put this drawing into a varible using SCREEN$.

 9010 if LOCATION=5 and DWARF=1 then DWARF$=screen$(4,10,10 to
       50,50) : screen$(5,100,50)=DWARF$ : screen copy 5 to back :
       screen copy 5 to physic

  9020 return

 So the idea is to take the drawing of the dwarf from the picture
 in bank 4 and enter it into the varible DWARF$ using the first
 version of screen$ then it is pasted onto the location picture in
 bank 5 at the co-ordinates 100,50 and the location picture which
 is always in bank 5 is put back onto the back and physic
 screens.  The RETURN command must be used after the last routine
 as this section was called by the subroutine at line 500.

 Remember that the palette of your drawing must be the same as the
 one of the location picture.

 Well that brings us to the end of the final chapter, I expect you
 are buzzing with ideas and ready to create your own games, so
 I'll leave you to it, I hope you enjoy using this package as much
 as we've enjoyed writing it and if you have any problems or just
 wish to write for a chat then you can get in touch with us by our
 address in the intro.doc file.

 Happy creating

 Deano and Tony of Silly Software.