>>> Prompt:
Declare NEW constants for the colors as bytes like this: for e.g. waterColor; const waterColorBytes = [0x00, 0x77, 0xbe]
...
>>> Prompt:
We are making a game like Lemmings, there is existing code. The relevant bits are:
The following is already declared in the program:
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
variable oldImgData is all pixel data gotten with ctx.getImageData()
function pixelIsColor(imageData, x, y, color): used to get compare a color of a pixel, x and y is canvas coorindate
function getPixelColor(imageData, x, y) is used to get the color of a pixel, x and y is canvas coorindate
The colors of various pixels are already delcared:
waterColor = '#0077be';
rockColor = '#888888';
dirtColor = '#4a2e00';
The pixelIsColor() and getPixelColor() take an array of the four color components as the color argument. Figure it out.
Declare NEW constants for the colors as bytes like this: for e.g. waterColor; const waterColorBytes = [0x00, 0x77, 0xbe] ...
Using the above:
Do collision detection for a sprite that looks a little like a blue lemming with green hair, give it
its own structure with position, velocity, etc. It should move around on a 2d canvas which has
gravity (that is, when there is no ground under it, it should fall down). If it runs in to an
obstacle on the x axis it should turn around and walk the other way. If it falls into something
on the y axis it should stop moving on the Y axis and start walking on the x axis. If it falls
into the water, the lemming is dead. Updates should be done every frame. There will eventually
be many lemmings, so do note that they are not controlled by keys, they move by themselves and is
constrained by the collision rules outlined above.
Just give me the code with minor comments, no need to explain anything in plain text.