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EarthBound Beginnings/Battle Engine: Difference between revisions
(→Enemies: Change enemy pointer info) |
(→Fight: Add SMAAASH base damage) |
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===Damage Calculation=== | ===Damage Calculation=== | ||
The following method is used to determine | The following method is used to determine attack damage: | ||
1. Calculate base damage (round BaseDamage down): | 1. Calculate base damage (round BaseDamage down): | ||
BaseDamage = [(AttackerOffense * 3) - DefenderDefense] / 4 | BaseDamage (normal) = [(AttackerOffense * 3) - DefenderDefense] / 4 | ||
BaseDamage (SMAAASH!!) = AttackerOffense | |||
2. Get random multiplier from this table. There is a 50% chance of RandMult being negative. | 2. Get random multiplier from this table. There is a 50% chance of RandMult being negative. | ||
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This means that any | This means that any attack can hit for 76% to 124% of its base damage. | ||
===Odds of getting a SMAAAASH!!=== | ===Odds of getting a SMAAAASH!!=== | ||
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If the attacker and defender have equal Fight, the chance of both hitting and getting a SMAAAASH!! is approximately 9%. | If the attacker and defender have equal Fight, the chance of both hitting and getting a SMAAAASH!! is approximately 9%. | ||
==PSI== | ==PSI== | ||
Revision as of 13:41, 22 April 2025
Fight
Hit/miss Calculation
The attacker hits if:
(256 + AttackerFight - DefenderFight) / 2 < (RANDOM 0-255) + 102
Otherwise "[NAME] dodged swiftly." If the attacker and defender have equal Fight, the chance of hitting is approximately 90%.
Damage Calculation
The following method is used to determine attack damage:
1. Calculate base damage (round BaseDamage down):
BaseDamage (normal) = [(AttackerOffense * 3) - DefenderDefense] / 4
BaseDamage (SMAAASH!!) = AttackerOffense
2. Get random multiplier from this table. There is a 50% chance of RandMult being negative.
| Odds | 7.8% | 7.8% | 7.8% | 7.8% | 7.8% | 7.0% | 7.0% | 6.3% | 6.3% | 5.5% | 4.7% | 4.7% | 3.9% | 3.1% | 3.1% | 2.3% | 2.3% | 1.6% | 1.6% | 1.6% | 0.8% | 0.8% | 0.8% | 0.8% |
| RandMult | 0 | ±1 | ±2 | ±3 | ±4 | ±5 | ±6 | ±7 | ±8 | ±9 | ±10 | ±11 | ±13 | ±14 | ±15 | ±16 | ±17 | ±18 | ±19 | ±20 | ±21 | ±22 | ±23 | ±24 |
3. Calculate final damage (round FinalDamage down):
FinalDamage = BaseDamage * (1 ± 0.1 * RandMult)
This means that any attack can hit for 76% to 124% of its base damage.
Odds of getting a SMAAAASH!!
The chance of a SMAAAASH!! is exactly the same as the chance of missing an attack: The attacker gets a SMAAAASH!! if:
(256 + AttackerFight - DefenderFight) / 2 > (RANDOM 0-255) + 102
If the attacker and defender have equal Fight, the chance of both hitting and getting a SMAAAASH!! is approximately 9%.
PSI
PSI attacks will always hit if the defender is not PSI-protected.
Damage
PSI damage calculation currently unknown.
Healing
PSI healing calculation currently unknown.
Combat data
Allies
Stored at RAM 0x0600-0x067F
- 00: Unknown (unused?)
- 01: Status condition
- Bit 0: Cold
- Bit 1: Poisoned
- Bit 2: Puzzled
- Bit 3: Confused
- Bit 4: Sleeping
- Bit 5: Paralyzed
- Bit 6: Stone
- Bit 7: Unconscious (can be applied even when HP isn't at 0)
- 02: Unknown
- 03-04: HP
- 05-06: PP
- 07-08: Offense
- 09-0A: Defense
- 0B: Fight
- 0C: Speed
- 0D: Wisdom
- 0E: Strength
- 0F: Force
- 10-17: Unknown
- 18-19: Pointer to name
- 1A-1F: Unknown
Enemies
Stored at RAM 0x0680-0x06FF
- 00: Unknown (unused?)
- 01: Status condition
- Bit 0: Cold
- Bit 1: Poisoned
- Bit 2: Puzzled
- Bit 3: Confused
- Bit 4: Sleeping
- Bit 5: Paralyzed
- Bit 6: Stone
- Bit 7: Unconscious (can be applied even when HP isn't at 0)
- 02: Unknown
- 03-04: HP
- 05-06: PP
- 07-08: Offense
- 09-0A: Defense
- 0B: Fight
- 0C: Speed
- 0D: Wisdom
- 0E: Strength
- 0F: Force
- 10-17: Attacks
- 18-19: Pointer to enemy data
- 1A-1B: Experience
- 1C-1D: Money
- 1E: Item dropped
- 1F: Graphic tileset