Bitmap inside radar - GameCreators Forum

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Abraxis

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Posted: 10th Jul 2008 19:44

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I'm working in a rpg game but I want to add a radar to the screen to display on which is the bad guy(red dot) or not(blue dot). I'd like to have this radar actually display the surrounding land that the player walks. Would I need to add another 'make camera' cammand for a helicopter view to show buildings, trees, etc,.?

If you do something 10,000 times. Your bound to get it right once.

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Nano brain

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Posted: 10th Jul 2008 23:32

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It depends. The camera may be the easiest method...or quickest, however you look at it. Need help with anything of it in particular? Let me know.

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Moe

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Posted: 11th Jul 2008 02:37

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There are a couple methods. Yes, one way would be to make another camera, this would show a completely literal view of everything the player was seeing, but from above.

The way most minimaps are done, however, take the X and Z coordinates of the player, and the surrounding objects, and then divide that by a certain amount. I'll try to get a couple sample scripts up

parrot

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Moe

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Posted: 11th Jul 2008 04:39

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`make the ground
make object plain 11, 200,200
`a plain starts out vertical soo...
rotate object 11,90,0,0
`it's center is at zero, zero, sooo
position object 11,100,0,100
`go to the texture making subroutine
gosub grassmaker

texture object 11,1

gosub MakeRandomObjects

position camera 0,2,0

make object sphere 12, 4

set ambient light 50

make camera 1

set camera view 1,0,0,200,200
position camera 1,0,30,0
point camera 1,0,0,0

do
control camera using arrowkeys 0,0.1,0.1
position object 12,camera position x(0),camera position y(0), camera position z(0)

rotate camera 1,camera angle x(1), camera angle y(0), camera angle z(1)
position camera 1,camera position x(0),70, camera position z(0)
loop

MakeRandomObjects:

`make ten random objects
for a=1 to 10

`the Y variable needs to be stored. When it is created, the object's center is at 0,0,0. So half of it is below 0 y
   `to solve this, you save the height of the object, and raise it by half of that. An object with a height of 1 would
   `be positioned 0.5 units above the ground.
   c=rnd(20)

`makes an object randomly, the x and z values don't need to be stored
   make object box a, rnd(5)+6,c,rnd(5)+6

`positions the object randomly, and half it's height above the ground
   position object a, rnd(200), c/2, rnd(200)

`colors the object. The red value is anywhere between 201 and 256. The green value is zero, because the player will
   `be green.
   color object a, rgb(rnd(56)+200, 0, 0)

next a

return

grassmaker:
create bitmap 1, 101, 101
set current bitmap 1
for x=1 to 100
for y=1 to 100
dot x,y,RGB(0,rnd(60)+130,0)
next x
next y
get image 1,1,1,100,100
set current bitmap 0
return

+ Code Snippet


`make the ground
make object plain 11, 200,200
`a plain starts out vertical soo...
rotate object 11,90,0,0
`it's center is at zero, zero, sooo
position object 11,100,0,100
`go to the texture making subroutine
gosub grassmaker

texture object 11,1

gosub MakeRandomObjects

position camera 0,2,0

make object sphere 12, 4

set ambient light 50

make camera 1

set camera view 1,0,0,200,200
position camera 1,0,30,0
point camera 1,0,0,0


do
control camera using arrowkeys 0,0.1,0.1
position object 12,camera position x(0),camera position y(0), camera position z(0)

rotate camera 1,camera angle x(1), camera angle y(0), camera angle z(1)
position camera 1,camera position x(0),70, camera position z(0)
loop













MakeRandomObjects:

`make ten random objects
for a=1 to 10


   `the Y variable needs to be stored. When it is created, the object's center is at 0,0,0. So half of it is below 0 y
   `to solve this, you save the height of the object, and raise it by half of that. An object with a height of 1 would
   `be positioned 0.5 units above the ground.
   c=rnd(20)


   `makes an object randomly, the x and z values don't need to be stored
   make object box a, rnd(5)+6,c,rnd(5)+6


   `positions the object randomly, and half it's height above the ground
   position object a, rnd(200), c/2, rnd(200)


   `colors the object. The red value is anywhere between 201 and 256. The green value is zero, because the player will
   `be green.
   color object a, rgb(rnd(56)+200, 0, 0)


next a

return










grassmaker:
create bitmap 1, 101, 101
set current bitmap 1
for x=1 to 100
for y=1 to 100
dot x,y,RGB(0,rnd(60)+130,0)
next x
next y
get image 1,1,1,100,100
set current bitmap 0
return

This would be the literal screen, which is the easiest to use. Otherwise you would have to
1. Make a texture of the entire map you want to use
2. make sure the texture map is in proportion to the real map
3. find the players position on the map texture
4. find the rotation
5. find the enemies position relative to the player and his rotation
6. divide that number to fit the screen
7. use the dot or circle command to make a dot or circle at the area on the minimap.
8. rotate and clip the minimap....

i dunno, it's hard.

parrot

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Nano brain

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Posted: 11th Jul 2008 07:19

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Here is another example of a map using a camera.

sync on
sync rate 0
autocam off

REM ---------------------
REM ---- SETUP SCENE ----
REM ---------------------

REM make ground
make object plain 1,30,30
color object 1,rgb(0,128,0)
xrotate object 1,-90

REM make boxes and place them at random points on the ground
for t=2 to 100
   make object box t,rnd(4),rnd(5),rnd(4)
   position object t,-30+rnd(60),object size y(t)/2,-30+rnd(60)
   color object t,rgb(rnd(255),rnd(255),rnd(255))
next

REM create player
make object sphere 101,2
xrotate camera 0,0
position camera 0,2,0

REM create and position camera used for literal map;send its info to an image; create sprite to display image with
make camera 1
get image 1,1,1,100,100
set camera to image 1,1,100,100
set current camera 0
sprite 1,10,10,1

REM -------------------
REM ---- MAIN LOOP ----
REM -------------------
repeat

REM player control
if upkey() then move camera 0,.10
if downkey() then move camera 0,-.10
if leftkey() then yrotate camera 0,camera angle y(0)-2
if rightkey() then yrotate camera 0,camera angle y(0)+2
position object 101,camera position x(0),2,camera position z(0)
rotate object 101,0,camera angle y(0),0

REM position map camera over player
position camera 1,camera position x(0),15,camera position z(0)
rotate camera 1,90,camera angle y(0),0

sync
until returnkey()
end

+ Code Snippet

sync on
sync rate 0
autocam off

REM ---------------------
REM ---- SETUP SCENE ----
REM ---------------------

REM make ground
make object plain 1,30,30
color object 1,rgb(0,128,0)
xrotate object 1,-90

REM make boxes and place them at random points on the ground
for t=2 to 100
   make object box t,rnd(4),rnd(5),rnd(4)
   position object t,-30+rnd(60),object size y(t)/2,-30+rnd(60)
   color object t,rgb(rnd(255),rnd(255),rnd(255))
next

REM create player
make object sphere 101,2
xrotate camera 0,0
position camera 0,2,0

REM create and position camera used for literal map;send its info to an image; create sprite to display image with
make camera 1
get image 1,1,1,100,100
set camera to image 1,1,100,100
set current camera 0
sprite 1,10,10,1

REM -------------------
REM ---- MAIN LOOP ----
REM -------------------
repeat

REM player control
if upkey() then move camera 0,.10
if downkey() then move camera 0,-.10
if leftkey() then yrotate camera 0,camera angle y(0)-2
if rightkey() then yrotate camera 0,camera angle y(0)+2
position object 101,camera position x(0),2,camera position z(0)
rotate object 101,0,camera angle y(0),0

REM position map camera over player
position camera 1,camera position x(0),15,camera position z(0)
rotate camera 1,90,camera angle y(0),0

sync
until returnkey()
end

If you would rather create a custom 2d map, and are still having trouble conquering it yourself, then let me know and I'll write up some quick example code for you. Good luck!

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Abraxis

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Posted: 11th Jul 2008 17:12

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thanx for help guys. I found both of these examples usefull. I now have the general idea on what to do.

If you do something 10,000 times. Your bound to get it right once.

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Abraxis

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Posted: 11th Jul 2008 21:15

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Just a thought tho. Having the radar transparent, almost like a ghost effect except on whos the bad guys.

Any ideas?

If you do something 10,000 times. Your bound to get it right once.

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Moe

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Posted: 13th Jul 2008 02:44

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with using a camera as a radar? i don't think it's possible.

parrot

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sinisterstuf

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Posted: 14th Jul 2008 13:58

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I don't really know what you mean but you could make a new camera (the one with the helicopter view) and output the camera to an object like a plain (there is a command for this, look it up in the help file because I don't remember it) which will be on the player's HUD and then lower the alpha value of the object and ghost it to make it transparent. Is that what you wanted?

Well... No, my name IS actually 'sinisterstuf' not 'Sinister Stuff', a misspelling resulting from the former having too many characters with no spaces in between

thanks CattleRustler!

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IanM

Retired Moderator

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Posted: 14th Jul 2008 20:13

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SET CAMERA TO IMAGE is the command, then use that to texture either a ghosted plain, or a sprite (plain would be better & faster, sprite is slightly easier).

[b]Utility plug-ins collection (updated 01/07/08) and
http://www.matrix1.demon.co.uk

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Nano brain

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Posted: 16th Jul 2008 23:29

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Abraxis,

I believe that the code below is an example of what you were asking for on your July 11 post. Opaque dots where the enemies are on the overlay map, with the rest of the map transparent. Hope this helps.

sync on
sync rate 0
autocam off

REM ---------------------
REM ---- SETUP SCENE ----
REM ---------------------

REM make ground
make object plain 1,60,60
color object 1,rgb(0,128,0)
xrotate object 1,-90

REM make boxes and place them at random points on the ground
for t=2 to 100
   make object box t,rnd(4),rnd(5),rnd(4)
   position object t,-30+rnd(60),object size y(t)/2,-30+rnd(60)
   color object t,rgb(rnd(255),rnd(255),rnd(255))
next

REM create player
playerobj=101
make object sphere playerobj,2
xrotate camera 0,0
position camera 0,2,0

REM create and position enemy objects
for t=102 to 110
   make object sphere t,2
   position object t,-30+rnd(60),2,-30+rnd(60)
   color object t,rgb(192,192,255)
next t

REM create and position camera used for literal map;send its info to an image; create sprite to display image with
make camera 1
get image 1,1,1,100,100
set camera to image 1,1,100,100
set current camera 0
sprite 1,10,10,1
REM make the main map transparent
set sprite alpha 1,75

REM make red dots
create bitmap 1,14,14
ink rgb(255,0,0)
for radius#=0 to 5 step .50
   circle 7,7,radius#
next radius#
get image 2,1,1,14,14
delete bitmap 1

REM this bitmap will be used behind the scenes to place our red dots on the map
create bitmap 1,100,100

REM this sprite will be overlayed on the map sprite and will hold the red dot image
get image 3,1,1,100,100
sprite 2,10,10,3

REM -------------------
REM ---- MAIN LOOP ----
REM -------------------
repeat

REM player control
if upkey() then move camera 0,.10
if downkey() then move camera 0,-.10
if leftkey() then yrotate camera 0,camera angle y(0)-2
if rightkey() then yrotate camera 0,camera angle y(0)+2
position object playerobj,camera position x(0),2,camera position z(0)
rotate object playerobj,0,camera angle y(0),0

REM position map camera over player
position camera 1,camera position x(0),15,camera position z(0)
rotate camera 1,90,camera angle y(0),0

REM draw dots on scaled map(on bitmap) if they are in the screen
set current camera 1
set current bitmap 1
ink rgb(0,0,0),0
box 1,1,100,1000
for t=102 to 110
   if object in screen(t)=1 then paste image 2,object screen x(t)-5,object screen y(t)-5,1
next t
get image 3,1,1,100,100

REM reset bitmap and camera so the rest of the program will work correctly
set current bitmap 0
set current camera 0

sync
until returnkey()
end

+ Code Snippet

sync on
sync rate 0
autocam off

REM ---------------------
REM ---- SETUP SCENE ----
REM ---------------------

REM make ground
make object plain 1,60,60
color object 1,rgb(0,128,0)
xrotate object 1,-90

REM make boxes and place them at random points on the ground
for t=2 to 100
   make object box t,rnd(4),rnd(5),rnd(4)
   position object t,-30+rnd(60),object size y(t)/2,-30+rnd(60)
   color object t,rgb(rnd(255),rnd(255),rnd(255))
next

REM create player
playerobj=101
make object sphere playerobj,2
xrotate camera 0,0
position camera 0,2,0

REM create and position enemy objects
for t=102 to 110
   make object sphere t,2
   position object t,-30+rnd(60),2,-30+rnd(60)
   color object t,rgb(192,192,255)
next t

REM create and position camera used for literal map;send its info to an image; create sprite to display image with
make camera 1
get image 1,1,1,100,100
set camera to image 1,1,100,100
set current camera 0
sprite 1,10,10,1
REM make the main map transparent
set sprite alpha 1,75

REM make red dots
create bitmap 1,14,14
ink rgb(255,0,0)
for radius#=0 to 5 step .50
   circle 7,7,radius#
next radius#
get image 2,1,1,14,14
delete bitmap 1

REM this bitmap will be used behind the scenes to place our red dots on the map
create bitmap 1,100,100

REM this sprite will be overlayed on the map sprite and will hold the red dot image
get image 3,1,1,100,100
sprite 2,10,10,3

REM -------------------
REM ---- MAIN LOOP ----
REM -------------------
repeat

REM player control
if upkey() then move camera 0,.10
if downkey() then move camera 0,-.10
if leftkey() then yrotate camera 0,camera angle y(0)-2
if rightkey() then yrotate camera 0,camera angle y(0)+2
position object playerobj,camera position x(0),2,camera position z(0)
rotate object playerobj,0,camera angle y(0),0

REM position map camera over player
position camera 1,camera position x(0),15,camera position z(0)
rotate camera 1,90,camera angle y(0),0

REM draw dots on scaled map(on bitmap) if they are in the screen
set current camera 1
set current bitmap 1
ink rgb(0,0,0),0
box 1,1,100,1000
for t=102 to 110
   if object in screen(t)=1 then paste image 2,object screen x(t)-5,object screen y(t)-5,1
next t
get image 3,1,1,100,100

REM reset bitmap and camera so the rest of the program will work correctly
set current bitmap 0
set current camera 0

sync
until returnkey()
end

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Abraxis

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Posted: 19th Jul 2008 01:49

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It seems if I use the 'set camera to image' command to form the radar into a sprite. Then use the 'set sprite alpha' command to make the radar somewhat transparent so I'm able to see whats going on in the distance.

I'm greatful of your help guys.

Thanx

If you do something 10,000 times. Your bound to get it right once.

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