Emanuele Feronato

Talking about Serious Scramblers game, Game development and HTML5.

Today we have another massive update to Serious Scramblers game developed with no code using GDevelop.

I added six types of enemies, interacting and killing each other, this way:

Hero: the player, the hero of the game.

Pig: a simple enemy which patrols the platforms, Hero can kill it by stomping on it. Pig can be also killed by Saw, Ghost and Turtle.

Platform: the platform, can be a normal platform or a disappearing platform.

Background: game background, with parallax scrolling.

Saw: a deadly rotating saw. Saw kills Pig, Mushroom and Turtle. Saw is killed by Rock.

Mushroom: when Hero touches a Mushroom, it bounces at high speed. Pig and Rock also bounce on Mushroom, which can be killed by Saw, Turtle and Ghost.

Ghost: kills Pig, Mushroom and Turtle.

Turtle: can’t be killed by Hero, it kills Pig and Mushroom and can be killed by Rock and Saw.

Rock: makes Hero bounce a bit if it jumps on it, kills Saw, Turtle, Pig and Mushroom and can’t be killed.

Have a run with the game:

Focus on the canvas, then play with LEFT and RIGHT or A and D keys to move, SPACE, SHIFT or W to jump.

Do not fall down or disappear from the upper side, watch out for disappearing platforms, and try to survive anyhow.

Let’s see the scene variables:

maxYPos: here I store the lowest platform y position, useful to know where to place a newly recycled platform.

gameStarted: boolean variable to check if the game started.

disappearingRatio: probability of a platform to disappear when the player lands on it (0: never – 99: always).

verticalSpeed: platform vertical speed movement, in pixels per second.

gameOver: flag to check if the game is over.

defaultJumpSpeed: player default jump speed

mushroomJumpSpeed: jump speed when the player hits a mushroom, I want it to be bigger than default speed

ghostSpeed: Ghost movement speed, in pixels per second

actualVerticalSpeed: actual vertical speed, based on verticalSpeed but I am increasing it when the hero is in the lower part of the screen

platformContentTypes: a string containing all platform content types, this way: XXXXXPPPPPSSSSMMMGGTTTTRRRRR where X means nothing, P means Pig, S means Saw, and so on. Then I toss a random letter, and this will be platform content.

platformContent: the content randomly chosen from platformContentTypes.

minPlatformWidth: minimum platform width, in pixels.

maxPlatformWidth: maximum platform width, in pixels.

Now, let’s have a look at objects’ internal variables:

left: maximum left position reachable before the saw starts to move to the right.

right: maximum right position reachable before the saw starts to move to the left.

goingRight: boolean variable. Is the saw moving to the right? If not, it’s moving to the left.

falling: flag to check if the saw is falling.

left: maximum left position reachable before the turtle starts to move to the right.

right: maximum right position reachable before the turtle starts to move to the left.

goingRight: boolean variable. Is the turtle moving to the right? If not, it’s moving to the left.

left: maximum left position reachable before the mushroom starts to move to the right.

right: maximum right position reachable before the mushroom starts to move to the left.

goingRight: boolean variable. Is the mushroom moving to the right? If not, it’s moving to the left.

left: maximum left position reachable before the pig starts to move to the right.

right: maximum right position reachable before the pig starts to move to the left.

goingRight: boolean variable. Is the pig moving to the right? If not, it’s moving to the left.

goingRight: boolean variable. Is the ghost moving to the right? If not, it’s moving to the left.

initialized: boolean variable to check if a platform has been initialized (correctly placed, with an enemy on it, and so on)

disappearing: boolean variable to check if the platform is a disappearing platform.

left: maximum left position reachable before the rock starts to move to the right.

right: maximum right position reachable before the rock starts to move to the left.

goingRight: boolean variable. Is the rock moving to the right? If not, it’s moving to the left.

And finally, the actions: it would be pointless to publish a huge image, so it’s better to download the entire project and start studying from there.