77 Commits (master)

Author SHA1 Message Date
Colin McMillen 07b3a531cb Don't set background color every frame. 9 years ago
Colin McMillen 485da7fcc6 Track & display high score. 9 years ago
Colin McMillen d12dcd32fb Tweaks to increase difficulty. 9 years ago
Colin McMillen 12a51ea9ec Don't reset background color on each game. 9 years ago
Colin McMillen bc0049edaf Add "Game Over" screen & restart game afterwards. 9 years ago
Colin McMillen 448fcfdde3 Refactor score rendering into reusable functions. 9 years ago
Colin McMillen bb674fced2 Create macro for advancing sprite array pointers. 9 years ago
Colin McMillen 52ac6e0cbe Display 4-digit player score. 9 years ago
Colin McMillen bf92ca0be9 Add a font for digits and a fake player score. 9 years ago
Colin McMillen 7eeeca9487 Add only one point per enemy killed. 9 years ago
Colin McMillen ac5dcc504a Check collisions between player shots & enemies. 9 years ago
Colin McMillen c5c3297237 Pull out a separate CheckCollision function. 9 years ago
Colin McMillen 4ca3bec032 Small code cleanups. 9 years ago
Colin McMillen a387160fdd Make an explicit cooldown for spawning the next ship. 9 years ago
Colin McMillen c17b137ab2 Remove username from TODOs 9 years ago
Colin McMillen 08fae310e8 Add shots that come from enemy ships. 9 years ago
Colin McMillen d7f0119cb6 Tweak ship / shot spawn rates. 9 years ago
Colin McMillen d460a519af Add enemy ships. 9 years ago
Colin McMillen 1c7b6fde81 Tweak to collision-detection. 9 years ago
Colin McMillen ca8926f567 Add display of player health. 9 years ago
Colin McMillen b238fa2d37 Collision detection between player and enemy shots. 9 years ago
Colin McMillen f5b67dd535 Change shots to be single-shot and 8x8 sprite size. 9 years ago
Colin McMillen a92499fc40 Fix a bug - *now* we don't need InitSpriteTables. 9 years ago
Colin McMillen abddbf0033 Turns out we did still need InitSpriteTables. 9 years ago
Colin McMillen 2bb1bc161d Add multiple enemy shots. 9 years ago
Colin McMillen 4bf0033962 Make enemy sprites red. 9 years ago
Colin McMillen 526bc9e320 Spawn enemy shots from right edge of screen. 9 years ago
Colin McMillen d81c9a9e4b Refactor jmp -> bra. 9 years ago
Colin McMillen f51a544956 Various refactorings. 9 years ago
Colin McMillen 4521c5d96b Remove InitializeSpriteTables routine. 9 years ago
Colin McMillen 0fa70c0889 Make a table of possible shot velocities. 9 years ago
Colin McMillen eb7757a8b3 Change shot sprite to be up against left edge. 9 years ago
Colin McMillen 6eab6050e8 Allow for negative x-velocity. 9 years ago
Colin McMillen 1dc44a3f00 Move sprite table RAM location. 9 years ago
Colin McMillen bac214a95b Fix subtraction / two's complement bug. 9 years ago
Colin McMillen e39f802bd5 Loop through shots array to find an empty spot. 9 years ago
Colin McMillen 7d0140d233 Alternate up-shots and down-shots. 9 years ago
Colin McMillen 5ace3844dc Shots can now have negative y-velocity. 9 years ago
Colin McMillen 611b4d20f2 Update world & sprites in separate loops. 9 years ago
Colin McMillen 25a2fb20ab Change bit-format of scratch sprite table. 9 years ago
Colin McMillen 48db4aca58 Don't bother storing zeroes to joypad registers. 9 years ago
Colin McMillen 116d591c60 Update shot speed and cooldown timer. 9 years ago
Colin McMillen 510aca6ed3 More register documentation. 9 years ago
Colin McMillen 49abebc211 Allow more than 4 shots. 9 years ago
Colin McMillen 0e7d46c46f Don't read joysticks during auto-joypad read. 9 years ago
Colin McMillen 5c45dfa834 Make macros for setting 16bit/8bit registers. 9 years ago
Colin McMillen 8c5b4232c1 Add a period. 9 years ago
Colin McMillen 36b54692c1 Simplify handling of secondary sprite table. 9 years ago
Colin McMillen 7a04a359fa Tighten up vBlankCounter code. 9 years ago
Colin McMillen 325006664b and+cmp -> bit where possible 9 years ago