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Tower intro
2025
This is part of the intro animation for Tower of Gold, which is a game I'm currently developing.
The fire effect uses a very simple real-time technique similar to "fire demos" seen in DOS games, except it uses a 2D array instead of working directly with the pixels on the screen. Each frame, every third cell (represented by one pixel) copies a random cell from the three below it. The intensity of the copied cell randomly decreases with height, but below a certain height it may randomly be greatly multiplied instead, resulting in the sudden sparks. The resulting array of cells is drawn as pixels using the EGA palette, though the bottom rows are drawn with reduced strength to create the rounded effect. The brightest of the white pixels are also drawn as 2x2 white squares, making them more voluminous.
Click here for an animated explanation of the silhouette effect. The pulsating stars were done by manually drawing 40 versions of the star at different sizes, then adjusting which image is drawn using sine functions.