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https://github.com/blondie7575/GSCats.git
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Support for local and global wind
This commit is contained in:
blondie7575
parent
c6d1fd00b2
commit
32c622afbe
@ -63,6 +63,8 @@ JD_VY = 138
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JD_TYPE = 140
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JD_NEW = 142
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JD_STATIC = 144
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JD_OWNER = 146
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JD_FACING = 148
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MAXPROJECTILES = 3
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42
fan.s
42
fan.s
@ -5,6 +5,10 @@
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; Created by Quinn Dunki on 8/15/18
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;
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FANRANGE = 100 ; In pixels
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FANMAGNITUDE = $10 ; 12.4 fixed point speed delta, in pixels
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; deployFan
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;
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@ -36,7 +40,7 @@ updateFan:
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SAVE_AXY
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lda projectileData+JD_STATIC,y
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bne updateFanDone ; We're already static, so no work to do
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bne updateFanWind ; We're set up, so apply our wind
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; Wait for fan to collide with us as it falls from the sky
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lda projectileData+GO_POSX,y
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@ -70,6 +74,42 @@ updateFanDone:
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RESTORE_AXY
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rts
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updateFanWind:
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lda projectileData+JD_OWNER,y
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cmp currentPlayer ; We're not affected by our own fan
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beq updateFanDone
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tyx
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ldy projectileActive
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bmi updateFanDone ; No active projectile
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; Calculate distance to fan
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lda projectileData+GO_POSX,y
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sta SCRATCHL
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lda projectileData+GO_POSX,x
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sec
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sbc SCRATCHL
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ABSA
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cmp #FANRANGE ; Check if we're within range
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bcs updateFanDone
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; Apply wind
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lda projectileData+JD_FACING,y
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bne updateFanWindNeg
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sec
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lda projectileData+JD_PRECISEX,y
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sbc #FANMAGNITUDE
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sta projectileData+JD_PRECISEX,y
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bra updateFanDone
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updateFanWindNeg:
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clc
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lda projectileData+JD_PRECISEX,y
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adc #FANMAGNITUDE
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sta projectileData+JD_PRECISEX,y
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bra updateFanDone
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; renderFan
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@ -384,7 +384,8 @@ projectileActive:
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.word -1 ; Y offset of active shot
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paused:
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.word 0
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globalWind:
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.word 0 ; 12.4 velocity
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; Position of map viewing window. Can be visualized in two ways:
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; a) Word-distance from right edge of terrain data (which is in memory right-to-left) to left edge of visible screen
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BIN
gscats.2mg
BIN
gscats.2mg
Binary file not shown.
9
macros.s
9
macros.s
@ -233,6 +233,15 @@ jsri_smc:
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jsr 0
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.endmacro
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.macro ABSA ; Absolute value of accumulator. Assumes status flags set correctly for accumulator!
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.local done
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bpl done
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eor #$ffff
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inc
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done:
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.endmacro
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;;;;;;;;;;
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; Stack Macros
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34
projectile.s
34
projectile.s
@ -22,8 +22,10 @@ projectileData:
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.word 0 ; Type
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.word 1 ; New?
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.word 0 ; Static?
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.word 0 ; Owner (player index)
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.word 0 ; Facing (0,1) = (+X,-X)
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.repeat 110
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.repeat 106
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.byte 0 ; Padding to 256-byte boundary
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.endrepeat
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@ -43,8 +45,10 @@ projectileData:
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.word 0 ; Type
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.word 1 ; New?
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.word 0 ; Static?
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.word 0 ; Owner (player index)
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.word 0 ; Facing (0,1) = (+X,-X)
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.repeat 110
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.repeat 106
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.byte 0 ; Padding to 256-byte boundary
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.endrepeat
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@ -64,8 +68,10 @@ projectileData:
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.word 0 ; Type
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.word 1 ; New?
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.word 0 ; Static?
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.word 0 ; Owner (player index)
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.word 0 ; Facing (0,1) = (+X,-X)
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.repeat 110
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.repeat 106
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.byte 0 ; Padding to 256-byte boundary
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.endrepeat
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@ -209,7 +215,19 @@ fireProjectile:
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lda #0
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sta projectileData+JD_STATIC,y
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sty projectileActive
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lda currentPlayer
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sta projectileData+JD_OWNER,y
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; Set facing. For now assume player orientations are constant
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beq fireProjectilePosX
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lda #1
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sta projectileData+JD_FACING,y
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bra fireProjectileSetup
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fireProjectilePosX:
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lda #0
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sta projectileData+JD_FACING,y
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fireProjectileSetup:
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lda projectileParams ; Fixed point version of X pos
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asl
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asl
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@ -328,13 +346,9 @@ updateProjectilePhysics:
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SAVE_AXY
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lda projectileData+GO_POSX,y
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bmi updateProjectilePhysicsSkip ; Not allocated
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bmi updateProjectilePhysicsDone ; Not allocated
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lda projectileData+JD_STATIC,y
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bne updateProjectilePhysicsSkip ; Static
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bra updateProjectilePhysicsActive
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updateProjectilePhysicsSkip:
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jmp updateProjectilePhysicsDone
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bne updateProjectilePhysicsSpecial ; Static
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updateProjectilePhysicsActive:
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; Integrate gravity over velocity
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@ -356,6 +370,7 @@ updateProjectilePhysicsActive:
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ror
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clc
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adc projectileData+JD_PRECISEX,y
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adc globalWind ; Add wind
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sta projectileData+JD_PRECISEX,y
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; Convert to integer for rendering
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@ -393,6 +408,7 @@ updateProjectilePhysicsContinue:
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cmp #GAMEOBJECTHEIGHT
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bmi updateProjectilePhysicsDelete
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updateProjectilePhysicsSpecial:
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; Check for special update code
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phy
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lda projectileData+JD_TYPE,y
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