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Routines |
| Prev: 39958 | Up: Map | Next: 40153 |
| 40008 | LD HL,0 | Set Magic Knight's current x- and y-velocities to zero... | ||
| 40011 | LD (24844),HL | ... | ||
| 40014 | CALL 39668 | Check whether Magic Knight is moving into a new room and react if so | ||
| 40017 | LD A,(23702) | If Magic Knight is currently in Bearwoolf's cave or hoard, or in Limbo then decrease Magic Knight's current strength by average of 1/4 if he is carrying the Glow Shield and jump to room-specific routine | ||
| 40020 | CP 3 | |||
| 40022 | JP C,40190 | |||
| 40025 | CP 17 | If Magic Knight is currently in the Castle or the Spaceship then decrease Magic Knight's current strength by average of 1/4 if he is carrying the Glow Shield and jump to room-specific routine | ||
| 40027 | JP NC,40190 | |||
| 40030 | LD A,(23702) | If Magic Knight's current room... | ||
| 40033 | LD B,A | ... | ||
| 40034 | LD A,(23715) | ...is the same as the Storm Cloud's current room... | ||
| 40037 | CP B | ... | ||
| 40038 | CALL Z,64637 | ...then if do-not-draw-storm-cloud flag is set then prepare to draw Storm Cloud | ||
| 40041 | LD A,(23715) | Load B with the Storm Cloud's current room as stored at 23715... | ||
| 40044 | LD B,A | ... | ||
| 40045 | LD A,(23700) | Load C with Storm Cloud's current x-coordinate... | ||
| 40048 | LD C,A | ... | ||
| 40049 | LD A,(23702) | Load H with Magic Knight's current room... | ||
| 40052 | LD H,A | ... | ||
| 40053 | LD A,(24840) | Load L with Magic Knight's current x-coordinate (pixels)... | ||
| 40056 | LD L,A | ... | ||
| 40057 | XOR A | Set A to zero and reset carry flag | ||
| 40058 | SBC HL,BC | If Magic Knight and Storm Cloud have the same horizontal position in the same room... | ||
| 40060 | JR Z,40102 | ...then skip ahead to 40102 (have a lightning bolt strike Magic Knight) | ||
| 40062 | JP P,40068 | If Magic Knight is to the right of the Storm Cloud then skip ahead to 40068 | ||
| 40065 | DEC BC | Move the Storm Cloud one pixel to the left, changing room if appropriate | ||
| 40066 | JR 40069 | Skip ahead to 40069 | ||
| 40068 | INC BC | Move the Storm Cloud one pixel to the right, changing room if appropriate | ||
| 40069 | LD A,B | Load A with Storm Cloud's current room in B... | ||
| 40070 | LD (23715),A | ...and store at 23715 | ||
| 40073 | LD A,C | Load A with Storm Cloud's current x-coordinate in C... | ||
| 40074 | LD (23700),A | ...and store at 23700 | ||
| 40077 | CP 32 | If Storm Cloud's current x-coordinate is less than 32... | ||
| 40079 | JP C,40091 | ...then skip ahead to 40091 | ||
| 40082 | CP 223 | If Storm Cloud's current x-coordinate is at least 223... | ||
| 40084 | JP NC,40094 | ...then skip ahead to 40094 | ||
| 40087 | SUB 30 | Subtract 30 from A (Storm Cloud's current x-coordinate) | ||
| 40089 | JR 40096 | Skip ahead to 40096 | ||
| 40091 | XOR A | Load A with zero | ||
| 40092 | JR 40096 | Skip ahead to 40096 | ||
| 40094 | LD A,195 | Load A with 195 | ||
| 40096 | LD (23701),A | Store new apparent x-coordinate at 23701 | ||
| 40099 | JP 40190 | Decrease Magic Knight's current strength by average of 1/4 if he is carrying the Glow Shield and jump to room-specific routine | ||
| 40102 | LD A,255 | Store 255 at 23694 and 23696... | ||
| 40104 | LD (23696),A | ...to preserve attributes already on screen... | ||
| 40107 | LD (23694),A | ... | ||
| 40110 | LD A,(23701) | Load C with apparent x-coordinate stored previously... | ||
| 40113 | ADD A,30 | ...and add 30... | ||
| 40115 | LD C,A | ...to give x-coordinate of origin of lightning bolt | ||
| 40116 | LD B,119 | Load B with 119 (y-coordinate of origin of lightning bolt) | ||
| 40118 | LD A,(24840) | Load E with Magic Knight's current x-coordinate (pixels) plus eight... | ||
| 40121 | ADD A,8 | ...(x-coordinate of target of lightning bolt)... | ||
| 40123 | LD E,A | ... | ||
| 40124 | LD A,(24841) | Load A with Magic Knight's current y-coordinate (pixels) | ||
| 40127 | SUB 175 | Subtract y-coordinate from 175 to change y-origin to top of screen... | ||
| 40129 | NEG | ...and have y-coordinate increase downwards rather than upwards | ||
| 40131 | LD D,A | Load D with result | ||
| 40132 | PUSH BC | Store BC (coordinates of lightning bolt origin) | ||
| 40133 | PUSH DE | Store DE (coordinates of lightning bolt target) | ||
| 40134 | CALL 48360 | Draw the lightning bolt | ||
| 40137 | LD B,20 | Wait for 20 interrupts... | ||
| 40139 | HALT | ... | ||
| 40140 | DJNZ 40139 | ... | ||
| 40142 | POP DE | Restore DE (coordinates of lightning bolt target) | ||
| 40143 | POP BC | Restore BC (coordinates of lightning bolt origin) | ||
| 40144 | CALL 48360 | Erase the lightning bolt drawn previously | ||
| 40147 | CALL 40153 | Decrease Magic Knight's current strength by ten | ||
| 40150 | JP 40190 | Decrease Magic Knight's current strength by average of 1/4 if he is carrying the Glow Shield and jump to room-specific routine | ||
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