diff options
| -rw-r--r-- | notes.org | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/notes.org b/notes.org new file mode 100644 index 0000000..3fd6d00 --- /dev/null +++ b/notes.org @@ -0,0 +1,218 @@ +* Gameplay details + - 10 absorbed bullets = 1 homing missile + - homing missiles are 10x more powerful than regular shot + - how missiles work: + - find the closest enemy + - allocate as many missiles as needed to kill it, or all the missiles + if there aren't enough to kill it + - if there are still missiles left over, repeat with the next + closest enemy + - when changing polarity, there's about 7-8 frames where your shield + isn't working and any type of bullet can kill you + - chain score bonuses: + - 1 Chain --- 100 points + - 2 Chain --- 200 points + - 3 Chain --- 400 points + - 4 Chain --- 800 points + - 5 Chain --- 1,600 points + - 6 Chain --- 3,200 points + - 7 Chain --- 6,400 points + - 8 Chain --- 12,800 points + - Max Chain - 25,600 points + - you get points for absorbing bullets but I'm not sure how many + +* Ikaruga Stage 1 +** Enemy Types + - Utatsugumi (big popcorn orbs) + - health: 1 + - points: 20 + - bullets on death: 5 + - Toratsugumi (little popcorns) + - health: 1 + - points: ? + - bullets on death: 5 + - Renjyaku (fast bird-like shooters) + - health: ? + - points: ? + - bullets on death: 7 + - Torafuzuku (big laser shooters) + - health: ? + - points: ? + - bullets on death: 32? + - Ajisashi (train-like thing) + - points: ? + - bullets on turret death: 5 + - bullets on death: 32? + - Eboshidori (boss) + - Eboshidori's satellites + +** Phases +**** intro +ikaruga enters the screen, player controls activate +**** utatsugumi sweeps +6 white from the top-right +6 black from the top-left +6 white +6 black +**** toratsugumi wall +a 3 wide by 6 tall block of white toratsugumi enter from the right and +take up position on the left. at the same time a 3 wide by 6 tall +block of black toratsugumi enter from the left and take up position on +the right. each block rests a moment then drifts off screen on the +same side they entered. +**** small toratsugumi sweep +3 white from the right followed by 3 black from the left. +**** interstitial +chapter 1 text appears, ship flies to next section +**** renjyaku attack +3 white renjyaku in triangle formation enter from the top-left corner +and take position on the center-left, about halfway down the +screen. they take a moment to setup, aim at the player, and fire a +direct stream of bullets at them. 3 more white renjyaku do the same, +but from the top-right and take position in center-right. repeat for +black, black, white, black. alternate the side each time. 3 white +renjyaku take position in the top-left, less than one second later 3 +black renjyaku take position in the top right. + +brief pause, then two triangle formations (so 6 ships total) enter the +top of the screen. from left to right, the color sequence is: black, +black, white, black, white, white. + +alternating from top-right/top-left corner, 3 white renjyaku sweep the +screen while shooting straight down. then renjyaku enter in the same +alternating fashion, but instead of sweeping they swap sides +occasionally as they move down the screen. every time they reach a new +side, they shoot straight down. the color sequence is: white, black, +white, black, white, black. as soon as all 6 ships have appeared on +screen, 6 black renjyaku enter: 3 on the far-left, 3 on the far-right, +with vertical gaps between forming 2 lines. they fly straight down the +screen and do not fire. + +finally, one white triangle formation quickly appears on the left, +shooting straight down. less than a second later, a black formation +does the same on the right. if not killed quickly, they leave the +screen on their respective sides. +**** small toratsugumi sweep +same as the other +**** utatsugumi wall +the utatsugumi spawn in-place at the top of the screen with a +formation like this: + + BWBW +BWBWBWBW +BWBWBWBW + BWBW + +They rotate around each other and I don't how to really describe it so +just watch gameplay footage. +**** small toratsugumi sweep +same as before, but the next phase starts as this happening +**** torafuzuku attack +black torafuzuku on the left, white on the right. 2 utatsugumi of the +respective color circling each. each begins by firing arcs of bullets +in clusters of 3 with big gaps between each cluster. if not killed +quickly enough, they start firing things I can only describe as +"whips". when the first one is killed, another replaces it +immediately, for a total of 4 torafuzuku. +**** big toratsugumi sweep +left sweep formation: WWB WBB BWW WWB +right sweep formation: WBB WWB BBW WBB +**** small renjyaku attack +3 black renjyaku aligned horizontally followed by an offset group of 2 +white renjyaku. all firing a barrage immediately. +**** small torafuzuku attack +a single white torafuzuku appears in the top center and immediately +charges and shoots a laser that sweeps from left to right. +**** utatsugumi ring +ring of 12 utatsugumi appear in this formation: BBBWWWBBBWWW. the ring +spins and adjusts diameter in a way I don't yet understand. +**** toratsugumi line +as the utatsugumi ring finshes it's sequence, 2 vertical lines of +toratsugumis move down the screen. left line order: BWBWBWBW. right +line order: WBWBWB. +**** ajisashi attack +just as the toratsugumi line appears, 2 ajisashis appear at the top of +the screen. black on the left, white on the right. the black one moves +vertically to the bottom of the screen and both activate their +turrets. then the black one moves horizontally to the right side, and +the white one moves horizontally to the left side. then the white one +moves to the bottom and then black one moves to the top. they continue +this pattern until they are killed or time out. new ajisashi's spawn +if the first is killed quickly enough. +**** toratsugumi lines +about 7-8 seconds after the ajisashis spawn, another 2 vertical lines +of toratsugumi scroll down the screen. each line has the same color in +this pattern: BWBWBWBWBWBWBW +**** toratsugumi wall +this only appears if you defeat the ajisashis and toratsugumi lines +fast enough. 5 horizontal lines of toratsugumi appear. as they scroll +down the screen, the toratsugumi move either to the left or to the +right, alternating with each line. the first line moves right, the +next left, etc. seems to be in this formation (the | marks the screen +edge). + + WWWBBB|WWWBBB|WWWBBB -> +<- BBBWWW|BBBWWW|BBBWWW + WWWBBB|WWWBBB|WWWBBB -> +<- BBBWWW|BBBWWW|BBBWWW + WWWBBB|WWWBBB|WWWBBB -> +**** boss intro +warning message. boss enters stage. assumes position at top of +screen. 100 second timer appears. +**** boss phase 1 +white bullets from sword. black bullets from black satellites. +**** boss phase 2 +black bullets from shield thing. white bullets from white satellites. +**** boss phase 3 +alternating white and black bombs. white and black bullets from white +and black satellites. +**** boss phase 4 +white semi-homing missiles from arm (sword was destroyed in phase 1.) +white and black bullets from white and black satellites. +**** end +boss is either killed or flees after 100 second timeout. battle report +is displayed. + + +* Sprites + +List of sprites needed: +- Ikaruga +- Ikaruga shield circle +- Utatsugumi +- Toratsugumi +- Renjyaku +- Torafuzuku +- Ajisashi +- Eboshidori +- Eboshidori's satellites +- Eboshidori's bombs +- explosion +- Ikaruga shot +- small circular enemy bullets +- medium circular enemy bullets +- large circular white bullet (Eboshidori's final attack) +- tapered enemy bullets (renjyaku fire these first) +- enemy laser +- player homing missile +- level background +- bitmap font +- chain UI +- Ikaruga UI icon +- missile charge UI + +* Audio + +Make sound effects with sfxr. See if there's free chiptune style +music that is anywhere close to fitting the mood set by the real +Ikaruga music. + +* Time management + +I think it's most important to get the intro phases, some +approximation of the renjyaku attack, and the boss battle implemented +to be close enough to the original stage 1. other enemies and phases +can be cut as needed for time. + +Hard to choose if chaining and/or missiles has high priority. +Probably missiles. |