12/14/2017
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74
cuccostorm.asm
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74
cuccostorm.asm
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;================================================================================
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StartCuccoStorm:
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;STA $FFFFFF
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PHA : PHX : PHY : PHP
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SEP #$30 ; set 8-bit accumulator & index registers
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LDA $1B : BNE .done ; skip if indoors
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LDY.b #$0A
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LDA.b #$0B : JSL Sprite_SpawnDynamically_arbitrary : BMI .done ; spawn a chicken
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JSL Sprite_SetSpawnedCoords
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LDA.b #$24 : STA $0DA0, Y ; turn it into an attack chicken
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LDA.b #$01 : STA $0DB0, Y
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.done
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PLP : PLY : PLX : PLA
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RTL
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;================================================================================
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SpawnAngryCucco:
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TXA : EOR $1A : AND.b #$0F : ORA $1B : BNE .spawn_delay
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LDA.b #$0B
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LDY.b #$0A
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JSL Sprite_SpawnDynamically_arbitrary : BMI .spawn_failed
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PHX
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TYX
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LDA.b #$1E : JSL Sound_SetSfx3PanLong
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PLX
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LDA.b #$01 : STA $0DB0, Y
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PHX
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JSL GetRandomInt : STA $0F : AND.b #$02 : BEQ .vertical_entry_point
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LDA $0F : ADC $E2 : STA $0D10, Y
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LDA $E3 : ADC.b #$00 : STA $0D30, Y
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LDA $0F : AND.b #$01 : TAX
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LDA $9F3C, X : ADC $E8 : STA $0D00, Y
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LDA $E9 : ADC.b #$00 : STA $0D20, Y
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BRA .set_velocity
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.vertical_entry_point
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LDA $0F : ADC $E8 : STA $0D00, Y
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LDA $E9 : ADC.b #$00 : STA $0D20, Y
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LDA $0F : AND.b #$01 : TAX
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LDA $9F3C, X : ADC $E2 : STA $0D10, Y
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LDA $E3 : ADC.b #$00 : STA $0D30, Y
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.set_velocity
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TYX
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LDA.b #$20 : JSL Sprite_ApplySpeedTowardsPlayerLong
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PLX
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LDA.b #$30 : JSL Sound_SetSfx2PanLong
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.spawn_failed
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.spawn_delay
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RTL
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;================================================================================
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