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antoine-source/loderunner/source/circleanimation.s
Antoine Vignau c1cb1f4d36 circle anim
2024-02-26 21:27:45 +01:00

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*
* L'animation affiche 4 points par rapport ˆ un centre
*
circleANIMATION
LDA #88 ; 88
STA caCENTERY
LDA #140 ; 140
STA caCENTERX
LDA fgCIRCLE ; inner or outer animation?
BEQ L88BD ; show the level
*--- hide the level
LDX #170 ; 170
STX caCURRENTY
LDX #0 ; 0
STX caFGMODE
L88B6 JSR caDOIT
DEC caCURRENTY
BNE L88B6
*--- show the level
L88BD LDA #1 ; 1
STA caCURRENTY
STA fgCIRCLE
STA caFGMODE ; 1
JSR printMEN
JSR printLEVEL
L88CB JSR caDOIT
INC caCURRENTY
LDA caCURRENTY
CMP #170
BNE L88CB
RTS
*---
caDOIT LDA caCURRENTY
STA caY16
LDA #$00
STA caY16+1
STA caFROM ; from 0
STA caFROM+1
LDA caY16 ; to Y*2
ASL
STA caTO
LDA caY16+1
ROL
STA caTO+1
LDA #$03 ; corrige de 3
SEC
SBC caTO
STA caTO
LDA #$00
SBC caTO+1
STA caTO+1
*--- On calcule les Y
LDA caCENTERY ; Point 1
SEC ; vers le haut
SBC caCURRENTY
STA caY1
LDA #$00
SBC #$00
STA caY1high
LDA caCENTERY ; Point 2
STA caY4 ; Point 3
STA caY3
LDA #$00
STA caY4high
STA caY3high
LDA caCENTERY ; Point 4
CLC ; vers le bas
ADC caCURRENTY
STA caY2
LDA #$00
ADC #$00
STA caY2high
*--- On calcule les X
LDA caCENTERX ; points ˆ gauche
SEC
SBC caCURRENTY
TAX
LDA #$00
SBC #$00
JSR caCALCX
STY caX1 ; x1 index
STA caX1mask ; x1 mask index
LDX caCENTERX ; points centraux
LDA #$00
JSR caCALCX
STY caX2
STY caX3
STA caX2mask
STA caX3mask
LDA caCENTERX ; points ˆ droite
CLC
ADC caCURRENTY
TAX
LDA #$00
ADC #$00
JSR caCALCX
STY caX4 ; x4 index
STA caX4mask ; x4 mask index
*-- On boucle
L8951 LDA caFROM+1 ; a-t-on tout affichŽ ?
CMP caY16+1
BCC L896F ; non
BEQ L8969
L8959 LDA caFROM
CMP caY16
BNE L8968
LDA caFROM+1
CMP caY16+1
BNE L8968
JMP caDRAWPOINTS ; dernier point et sort
L8968 RTS ; oui
L8969 LDA caFROM
CMP caY16
BCS L8959 ; oui
L896F JSR caDRAWPOINTS ; non
*---
LDA caTO+1 ; en + ou en -
BPL L89A7
LDA caFROM ; *2
ASL
STA caTEMP16
LDA caFROM+1
ROL
STA caTEMP16+1
LDA caTEMP16 ; *4
ASL
STA caTEMP16
LDA caTEMP16+1
ROL
STA caTEMP16+1
LDA caTO ; temp16 += to
CLC
ADC caTEMP16
STA caTEMP16
LDA caTO+1
ADC caTEMP16+1
STA caTEMP16+1
LDA #$06 ; +=6
CLC
ADC caTEMP16
STA caTO
LDA #$00
ADC caTEMP16+1
STA caTO+1
JMP L8A14
L89A7 LDA caFROM
SEC
SBC caY16
STA caTEMP16
LDA caFROM+1
SBC caY16+1
STA caTEMP16+1
LDA caTEMP16
ASL
STA caTEMP16
LDA caTEMP16+1
ROL
STA caTEMP16+1
LDA caTEMP16
ASL
STA caTEMP16
LDA caTEMP16+1
ROL
STA caTEMP16+1
LDA caTEMP16
CLC
ADC #$10
STA caTEMP16
LDA caTEMP16+1
ADC #$00
STA caTEMP16+1
LDA caTEMP16
CLC
ADC caTO
STA caTO
LDA caTEMP16+1
ADC caTO+1
STA caTO+1
LDA caY16
PHP
DEC caY16
PLP
BNE L89EC
DEC caY16+1
L89EC INC caY1
BNE L89F2
INC caY1high
L89F2 DEC caX4mask
BPL L89FC
LDA #$06
STA caX4mask
DEC caX4
L89FC INC caX1mask
LDA caX1mask
CMP #$07
BNE L8A0A
LDA #$00
STA caX1mask
INC caX1
L8A0A DEC caY2
LDA caY2
CMP #$FF
BNE L8A14
DEC caY2high
L8A14 INC caFROM
BNE L8A1A
INC caFROM+1
L8A1A INC caX3mask
LDA caX3mask
CMP #$07
BNE L8A28
LDA #$00
STA caX3mask
INC caX3
L8A28 DEC caY4
LDA caY4
CMP #$FF
BNE L8A32
DEC caY4high
L8A32 INC caY3 ; y++
BNE L8A38
INC caY3high
L8A38 DEC caX2mask ; mask--
BPL L8A42
LDA #$06 ; reset mask
STA caX2mask
DEC caX2 ; x--
L8A42 JMP L8951
*-----------------------------------
* CALCULE LA COLONNE (X/A)
*-----------------------------------
* in: X/A
* out: A: bit index
* Y: column
caBI2BY = 2 ; HGR: 7, SHR: 2
caCALCX STX caTEMP16 ; sauve le bas
LDY #$08 ; huit bits
SEC ; -7
SBC #caBI2BY
L8A4C PHP ; sauve
ROL caTEMP16+1
ASL caTEMP16
ROL
PLP
BCC L8A5A
SBC #caBI2BY
JMP L8A5C
L8A5A ADC #caBI2BY
L8A5C DEY
BNE L8A4C
BCS L8A64
ADC #caBI2BY ; corrige
CLC
L8A64 ROL caTEMP16+1 ; retourne les valeurs
LDY caTEMP16+1 ; la colonne
RTS
*-----------------------------------
* DRAW ALL POSSIBLE POINTS
*-----------------------------------
caDRAWPOINTS
LDY caY2high
BNE L8A8C
LDY caY2
CPY #176
BCS L8A8C
JSR setHGRPOINTERS
LDY caX3
CPY #hgrWIDTH
BCS L8A81
LDX caX3mask
JSR caDRAW
L8A81 LDY caX2
CPY #hgrWIDTH
BCS L8A8C
LDX caX2mask
JSR caDRAW
L8A8C LDY caY1high
BNE L8AAF
LDY caY1
CPY #176
BCS L8AAF
JSR setHGRPOINTERS
LDY caX3
CPY #hgrWIDTH
BCS L8AA4
LDX caX3mask
JSR caDRAW
L8AA4 LDY caX2
CPY #hgrWIDTH
BCS L8AAF
LDX caX2mask
JSR caDRAW
L8AAF LDY caY3high
BNE L8AD2
LDY caY3
CPY #176
BCS L8AD2
JSR setHGRPOINTERS
LDY caX4
CPY #hgrWIDTH
BCS L8AC7
LDX caX4mask
JSR caDRAW
L8AC7 LDY caX1
CPY #hgrWIDTH
BCS L8AD2
LDX caX1mask
JSR caDRAW
L8AD2 LDY caY4high
BNE L8AF5
LDY caY4
CPY #176
BCS L8AF5
JSR setHGRPOINTERS
LDY caX4
CPY #hgrWIDTH
BCS L8AEA
LDX caX4mask
JSR caDRAW
L8AEA LDY caX1
CPY #hgrWIDTH
BCS L8AF5
LDX caX1mask
JMP caDRAW
L8AF5 RTS
*-----------------------------------
* DRAW OR HIDE BYTE
*-----------------------------------
caDRAW LDA caFGMODE
BNE L8B02
LDA [ptrHGR1],Y ; hide
AND L8B0C,X
STA [ptrHGR1],Y
RTS
L8B02 LDA [ptrHGR2],Y ; show
AND L8B13,X
ORA [ptrHGR1],Y
STA [ptrHGR1],Y
RTS
* 00 01 02 03 04 05 06 parce que 7 bits
L8B0C HEX F0,F0,F0,F0,8F,8F,8F
L8B13 HEX 8F,8F,8F,8F,F0,F0,F0
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