Stevan/chip
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat: make space invaders playable

Browse Source
This commit is contained in:
Stevan Freeborn
2026-07-18 08:28:24 -05:00
parent 87a6954ba1
commit e956e4abaa
2 changed files with 161 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/todos.md
+25 -15
View File
@@ -56,10 +56,20 @@
- [x] Refactor main
- [x] Migrate drawing to raylib window
- [x] Handle keyboard input
- [ ] Handle keyboard input
CHIP-8 Pad QWERTY Keyboard
┌───┬───┬───┬───┐ ┌───┬───┬───┬───┐
│ 1 │ 2 │ 3 │ C │ │ 1 │ 2 │ 3 │ 4 │
├───┼───┼───┼───┤ ├───┼───┼───┼───┤
│ 4 │ 5 │ 6 │ D │ ====> │ Q │ W │ E │ R │
├───┼───┼───┼───┤ ├───┼───┼───┼───┤
│ 7 │ 8 │ 9 │ E │ │ A │ S │ D │ F │
├───┼───┼───┼───┤ ├───┼───┼───┼───┤
│ A │ 0 │ B │ F │ │ Z │ X │ C │ V │
└───┴───┴───┴───┘ └───┴───┴───┴───┘
- [ ] Implement remaining instructions
- [x] Implement remaining instructions
| x | Opcode | Type | Description |
| --- | ------ | ---- | --------------------------------------------------------------- |
@@ -76,17 +86,17 @@
| x | `8xy6` | 8xy6 | Set Vx = Vx SHR 1 |
| x | `8xy7` | 8xy7 | Set Vx = Vy - Vx, set VF = NOT borrow |
| x | `8xyE` | 8xyE | Set Vx = Vx SHL 1 |
| | `9xy0` | 9xy0 | Skip next if Vx != Vy |
| x | `9xy0` | 9xy0 | Skip next if Vx != Vy |
| x | `Cxkk` | Cxkk | Set Vx = random byte AND kk |
| | `Ex9E` | Ex9E | Skip next if key Vx is pressed |
| | `ExA1` | ExA1 | Skip next if key Vx is not pressed |
| | `Fx07` | Fx07 | Set Vx = delay timer value |
| | `Fx0A` | Fx0A | Wait for key press, store key in Vx |
| | `Fx15` | Fx15 | Set delay timer = Vx |
| | `Fx18` | Fx18 | Set sound timer = Vx |
| | `Fx1E` | Fx1E | Set I = I + Vx |
| | `Fx29` | Fx29 | Set I = location of sprite for digit Vx |
| | `Fx33` | Fx33 | Store BCD representation of Vx in memory |
| | `Fx55` | Fx55 | Store registers V0 through Vx in memory starting at location I |
| | `Fx65` | Fx65 | Read registers V0 through Vx from memory starting at location I |
| | `0nnn` | 0nnn | Jump to machine code routine (ignored) |
| x | `Ex9E` | Ex9E | Skip next if key Vx is pressed |
| x | `ExA1` | ExA1 | Skip next if key Vx is not pressed |
| x | `Fx07` | Fx07 | Set Vx = delay timer value |
| x | `Fx0A` | Fx0A | Wait for key press, store key in Vx |
| x | `Fx15` | Fx15 | Set delay timer = Vx |
| x | `Fx18` | Fx18 | Set sound timer = Vx |
| x | `Fx1E` | Fx1E | Set I = I + Vx |
| x | `Fx29` | Fx29 | Set I = location of sprite for digit Vx |
| x | `Fx33` | Fx33 | Store BCD representation of Vx in memory |
| x | `Fx55` | Fx55 | Store registers V0 through Vx in memory starting at location I |
| x | `Fx65` | Fx65 | Read registers V0 through Vx from memory starting at location I |
| - | `0nnn` | 0nnn | Jump to machine code routine (ignored) |