How do I make a boost button for my game also how to do collision with this game?

[CoD]

colorback (white)
var x := 265
var y := 250
const INCREMENT : int := 10
var chars : array char of boolean
var a := 210
var b := 220
var circle1rad : int
var circle2rad :int
var font1,font2,font3,font4,font5 :int
font1 := Font.New("Comicsans:20:bold")
font2 := Font.New("Mono:50:bold")
font3 := Font.New("Mono:50:bold")
font4 := Font.New("Mono:50:bold")
font5 := Font.New("Comicsans:50:bold")
circle1rad := 12
circle2rad := 12




View.Set("graphics:500,500")
cls
Font.Draw("Are You Ready?",150,maxy div 2,font1,black)
delay(500)
cls
Font.Draw("3",220,maxy div 2,font2,black)
delay(500)
cls
Font.Draw("2",220,maxy div 2,font3,black)
delay(500)
cls
Font.Draw("1",220,maxy div 2,font4,black)
delay(500)
cls
Font.Draw("Sumo",177,maxy div 2,font5,black)
delay(500)
cls

loop
View.Update
View.Set("offscreenonly")
View.Set("graphics:500,500")
cls
Draw.FillOval (a + 20, b + 30,circle1rad, circle1rad , black)
Draw.FillOval (x, y,circle2rad,circle2rad, red)
Draw.Oval(250,250,230,250,black)


Input.KeyDown (chars)
if chars (KEY_LEFT_ARROW) and chars (KEY_UP_ARROW) then
x := x - INCREMENT
y := y + INCREMENT
Draw.FillOval (x - 1, y - 1, 5, 5, red)
elsif chars (KEY_RIGHT_ARROW) and chars (KEY_UP_ARROW) then
x := x + INCREMENT
y := y + INCREMENT
Draw.FillOval (x + 2, y + 1, 5, 5, red)
elsif chars (KEY_LEFT_ARROW) and chars (KEY_DOWN_ARROW) then
y := y - INCREMENT
x := x - INCREMENT
Draw.FillOval (x - 1, y - 1, 5, 5, red)
elsif chars (KEY_RIGHT_ARROW) and chars (KEY_DOWN_ARROW) then
y := y - INCREMENT
x := x + INCREMENT
Draw.FillOval (x + 1, y + 1, 5, 5, red)
elsif chars (KEY_LEFT_ARROW) then
x := x - INCREMENT
Draw.FillOval (x - 4, y - 1, 5, 5, red)
elsif chars (KEY_RIGHT_ARROW) then
x := x + INCREMENT
Draw.FillOval (x + 5, y - 1, 5, 5, red)
elsif chars (KEY_UP_ARROW) then
y := y + INCREMENT
Draw.FillOval (x + 1, y + 5, 5, 5, red)
elsif chars (KEY_DOWN_ARROW) then
y := y - INCREMENT
Draw.FillOval (x - 1, y - 5, 5, 5, red)
end if


if chars ('a') and chars ('w') then
a := a - INCREMENT
b := b + INCREMENT
Draw.FillOval (a + 20, b + 30, 5, 5, black)
elsif chars ('a') and chars ('s') then
a := a - INCREMENT
b := b - INCREMENT
Draw.FillOval (a + 21, b + 28, 5, 5, black)
elsif chars ('d') and chars ('w') then
a := a + INCREMENT
b := b + INCREMENT
Draw.FillOval (a + 22, b + 30, 5, 5, black)
elsif chars ('d') and chars ('s') then
a := a + INCREMENT
b := b - INCREMENT
Draw.FillOval (a + 20, b + 29, 5, 5, black)
elsif chars ('a') then
a := a - INCREMENT
Draw.FillOval (a + 15, b + 29, 5, 5, black)
elsif chars ('d') then
a := a + INCREMENT
Draw.FillOval (a + 25, b + 30, 5, 5, black)
elsif chars ('w') then
b := b + INCREMENT
Draw.FillOval (a + 20, b + 36, 5, 5, black)
elsif chars ('s') then
b := b - INCREMENT
Draw.FillOval (a + 20, b + 25, 5, 5, black)
end if
delay (40)
end loop

[Tony]

- what is the problem?
- what did you do to try to solve it?
- use [ code ] tags with _relevant_ code.

[Insectoid]

Here's a big hint: Buttons *are* collisions between some button graphic and the mouse.

There's plenty of tutorials about collision detection, as well as hundreds of responses to other people asking the same question.

Try using the search function at the top of the page.

[huskiesgoaler34]

turing reference guide; search for "button"; it will show u how to make a button

[huskiesgoaler34]

for collision use what dot color

if oval1 is red and oval2 is black then collision = true

[Insectoid]

huskiesgoaler34 @ Wed Jun 22, 2011 7:11 pm wrote:

for collision use what dot color

if oval1 is red and oval2 is black then collision = true

This makes no sense at all. Might as well say "if I am a cow and you are a pig then collision = true".

[huskiesgoaler34]

sorry i meant that if the 1 oval is red and 1 oval is black then you can check to see if the color red collides with the color black. this would mean that there was a collision

[Insectoid]

Well, that doesn't explain how to detect if the color red collides with the color black. Might as well say that if one dog is brown and one house is flat then check to see if the chair swallowed a goose.

[Tony]

huskiesgoaler34 @ Wed Jun 22, 2011 7:28 pm wrote:

if the 1 oval is red and 1 oval is black then you can check to see if the color red collides with the color black.

Two problems:
- need to check every pixel of one of the circles
- need to know the draw order of both circles