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* Add collision with the playerMiquel Sabaté Solà2026-03-041-5/+6
| | | | | | | This allows for explosions to run after making the player to disappear, and it re-runs the entering scene timer. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* Add a pool of explosion effectsMiquel Sabaté Solà2026-03-031-2/+2
| | | | | | | For now this only applies to enemies, but it's general enough so it can target any given coordinate, and hence any given object. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* Initial iteration of enemy movementMiquel Sabaté Solà2026-02-121-1/+1
| | | | | | | For now only the basic algorithm has been written, but the framework for adding the rest has also been written down. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* Allocate all enemies on sprite cyclingMiquel Sabaté Solà2026-02-101-1/+1
| | | | | | | The previous commit only tackled the first enemy, this one handles the "rest_o_enemies" code flow, which was entirely missing. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* enemies: add inner movement and facing logicMiquel Sabaté Solà2026-02-101-1/+1
| | | | | | | | | Enemies now have the ability to be displayed on screen, face at the direction that they were assigned to at random during initialization time, and they also have a timer that dictates some inner movement, similarly as it happened in the original game. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* Adapt the code to play well with nasm's asanMiquel Sabaté Solà2025-12-151-5/+5
| | | | | | | The address sanitizer from nasm provides quite a few goodies, so let's adapt the code more to it to benefit from those. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* Add the segment on globals.sMiquel Sabaté Solà2025-05-151-0/+2
| | | | | | Possibly not an issue, but it's better to be safe than sorry. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Define the notion of a levelMiquel Sabaté Solà2025-05-151-0/+8
| | | | | | | | | This is for now just a variable that will be set during initialization, and that it can be influenced through the `LEVEL` make variable. Both the level and the level "kind" notions are used tracking, at least, which kind of enemy wave we have to send. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Add the ability to pause the gameMiquel Sabaté Solà2025-04-031-1/+2
| | | | Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Disable the PPU between the title to main screensMiquel Sabaté Solà2025-03-191-3/+3
| | | | | | | During other transitions like game over and such it might also be needed to have something similar, but for now this should cut it. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Add a title and a main screensMiquel Sabaté Solà2025-03-131-1/+3
| | | | | | | | This commit adds the skeleton for having a title and a main screen. For now the title menu doesn't do much, as the selection is simply ignored, but at least it already knows how to cycle between these two states. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Start with a skeleton for the projectMiquel Sabaté Solà2025-03-121-0/+34
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>