Hey There! Welcome to a Platformer Tutorial
I will be showing you how to make a Platformer with a ton of features including Enemy AI, Water, smooth movement and more!
If you use this tutorial please do credit me @lambodhar. Also, it would be great if you followed me too since I worked hard on making this tutorial
Additionally, you can have fun playing this game below:
Just click on the image to play and have fun!

when green flag clicked
play sound [drumroll v] until done
say [Let get started!]

Let's first start off by drawing the player!
Make a new sprite and then, draw the player as a square as depicted below


Let's now code the player
Just follow all the coding below :)

define Run Engine with speed: (speed) jump height: (jump height) Friction: (friction)
set rotation style [left-right v]
gravity::custom
if <key [right arrow v] pressed?> then
    change [Speed x v] by (speed::custom)
    point in direction (90)
end
if <key [left arrow v] pressed?> then
    change [Speed x v] by (() - (speed::custom))
    point in direction (-90)
end
set [Speed x v] to ((Speed x) * (friction::custom))
change x by (Speed x)
if <touching [level v]?> then
    change y by (1)
    if <touching [level v]?> then
        change y by (1)
        if <touching [level v]?> then
            change y by (1)
            if <touching [level v]?> then
                change y by (1)
                if <touching [level v]?> then
                    change y by (1)
                    if <touching [level v]?> then
                        change x by ((Speed x) * (-1))
                        change y by (-5)
                        if <<key [up arrow v] pressed?> or <key [w v] pressed?>> then
                            if <(Speed x) < [0]> then
                                set [Speed x v] to [8]
                            else
                                set [Speed x v] to [-8]
                            end
                            set [speed Y v] to [10]
                        else
                            set [Speed x v] to [0]
                        end
                    end
                end
            end
        end
    end
end
change y by (speed Y)
if <touching [level v]?> then
    change y by ((speed Y) * (-1))
    set [speed Y v] to [0]
end
change y by (-1)
if <touching [water v]?> then
    if <<key [up arrow v] pressed?> or <key [w v] pressed?>> then
        set [speed Y v] to [3]
    end
else
    if <touching [level v]?> then
        if <<key [up arrow v] pressed?> or <key [w v] pressed?>> then
            set [speed Y v] to (jump height::custom)
        end
    end
end
change y by (1)
if <[237] < (x position)> then
    broadcast [next level v]
    broadcast [level reset v]
    broadcast [setup enemies v]
    broadcast [setup trampolines v]
end
if <(y position) < [-174]> then
    broadcast [level reset v]
    broadcast [setup enemies v]
    broadcast [setup trampolines v]
end
if <touching [enemy v]?> then
    set [speed Y v] to [10]
end

when @greenFlag clicked
set [level v] to [1]
broadcast [level reset v]
broadcast [setup enemies v]
broadcast [setup trampolines v]
forever
    Run Engine with speed: [1] jump height: [15] Friction: [0.9]::custom
end

when I receive [level reset v]
go to x: (-192) y: (47)
set [Speed x v] to [0]
set [speed Y v] to [0]

when I receive [next level v]
change [level v] by (1)

define gravity
if <touching [water v]?> then
    change [speed Y v] by (-0.3)
else
    change [speed Y v] by (-1)
end

We are now done with the coding the player!

Now, let's code the level.

Make a new sprite called level.
Then make multiple costumes of different level as shown in the below picture
Each costume is a one level

Then, code the level as shown below

when @greenFlag clicked
forever
    switch costume to (level)
end

Now, let's make enemy AI
For this, duplicate the player sprite and then edit the enemy codes as shown below.
You can additionally, make the enemy red colour

define Run Engine with speed: (speed) jump height: (jump height) Friction: (friction)
show
change [speed Y v] by (-1)
if <(x position) < ([x position v] of [Player v]::sensing)> then
    change [Speed x v] by (speed::custom)
end
if <([x position v] of [Player v]::sensing) < (x position)> then
    change [Speed x v] by (() - (speed::custom))
end
set [Speed x v] to ((Speed x) * (friction::custom))
change x by (Speed x)
if <touching [level v]?> then
    change y by (1)
    if <touching [level v]?> then
        change y by (1)
        if <touching [level v]?> then
            change y by (1)
            if <touching [level v]?> then
                change y by (1)
                if <touching [level v]?> then
                    change y by (1)
                    if <touching [level v]?> then
                        change x by ((Speed x) * (-1))
                        change y by (-5)
                        if <((15) + (y position)) < ([y position v] of [Player v]::sensing)> then
                            if <(Speed x) < [0]> then
                                set [Speed x v] to [8]
                            else
                                set [Speed x v] to [-8]
                            end
                            set [speed Y v] to [10]
                        else
                            set [Speed x v] to [0]
                        end
                    end
                end
            end
        end
    end
end
change y by (speed Y)
if <touching [level v]?> then
    change y by ((speed Y) * (-1))
    set [speed Y v] to [0]
end
change y by (-1)
if <touching [level v]?> then
    if <((y position) + (15)) < ([y position v] of [Player v]::sensing)> then
        set [speed Y v] to (jump height::custom)
    end
end
change y by (1)
if <(y position) < [-173]> then
    delete this clone
end
if <touching [Player v]?> then
    if <(y position) < (([y position v] of [Player v]::sensing) + (7))> then
        delete this clone
    else
        broadcast [level reset v]
        broadcast [setup enemies v]
    end
end

when I receive [level reset v]
go to x: (167) y: (47)
set [Speed x v] to [0]
set [speed Y v] to [0]

when I start as a clone
set [Speed x v] to [0]
set [speed Y v] to [0]
forever
    Run Engine with speed: [.7] jump height: [15] Friction: [0.9]::custom
end

define Clone at X: (x) y: (Y)
go to x: (x::custom) y: (Y::custom)
create clone of [myself v]

This custom block helps us to place enemies.
To place your enemy, type in the X coordinate in the first blank and Y coordinate it the second blank. See below code for example on how to use the block

when I receive [setup enemies v]
if <(level) = [2]> then
    Clone at X: [184] y: [88]::custom
end
if <(level) = [3]> then
    Clone at X: [180] y: [-9]::custom
end


when I receive [level reset v]
delete this clone

Now, we are done with coding the enemy AI!


Now, let's code the water!
For this, make a new sprite called water and make the water level the same way you made the ground levels!
Each costume will be one level
Preferably, make the colour “blue”
Then, code the water as shown below:

 when @greenFlag clicked
forever
    switch costume to (level)
    
end

AND….. You are now done!!!!
CONGRATS ON MAKING AN ADVANCED PLATFORMER!
IF YOU HAVE ANY DOUBTS, BE SURE TO COMMENT ON MY PROFILE OR YOU CAN ASK IN THIS FORUM TOPIC ITSELF!

THANKS AND BE SURE TO CREDIT ME @lambodhar IF YOU USE THIS TUTORIAL
ALSO, CONSIDER FOLLOWING ME TOO!
BYE…

This isn't the right place to post this…

Cat_Dusty wrote:

This isn't the right place to post this…

Then where should this be posted?