... boundaries, you can write a sprite routine that just displays the ... an inverted silhouette for every sprite frame. That is ANDed first ... the right shape, then the sprite is ORed. A less ... use XOR to draw the sprite, then another XOR to erase the sprite.

...
[CODE]org 33000
xor a
call 8859
ld a,(hl)
xor c
ld (hl),c ... ld ix,bits
loop3 xor a
ld a,(ix ... br /> inc (hl)
xor a
ld (count),a ... starts here or before, sprite misses third screen segment later ...

... " rather than "cp 0" and "xor a" rather than "ld a ... ).

* There is no detection of buffer overflow and when ...

... have 2 sprite types so type 0 can detect collision with type ... it is trying to detect collision with itself

have ...

... so I guess the sprite is also checks collision with itself. That ... if it collides with another sprite or itself and do something ... when it collides with another sprite.

In the game ...

... as PARAMA of current sprite, the current sprite is
the ...
IF COLLISION 0
Checks if the sprite collides with itself ... of the other sprite is A,the sprite collides with itself ... LET Y = C
The sprite being controlled should not be ...

The way COLLISION works is to go through the sprite table looking for ... the current sprite, unless it encounters a collision with another sprite first. If ... there is a genuine collision with another sprite ...

... can check for a box collision with a list of objects ... promotes the object to a sprite. Once the object has moved ... a block, and deletes the sprite.

... way, so I'm "just" XOR'ing them. No masks, no ... like a slightly more fancy sprite routine, but I'll do ...

... like a slightly more fancy sprite routine, but I'll ... XOR routine. Just set up the registers for the old sprite ... your registers for the new sprite. Draw a byte or ... line of one sprite, then use EXX to ... to worry about where a sprite is because if the ...

... is to delete the old sprite line by line (or byte ... , especially for a pre-shifted XOR routine.[/QUOTE]

I ...

... /> [code]


#include ; sprite engine
#include ; INK / PAPER ... the sp1_Invalidate() call

xor a ; we mark the list ...

... patent application, the polarity
detection / inversion is well described, but ... /> code in the disassembly. This detection is suppose to be made ... />
The drawing shows the xor gate driven by something external ...

... too. After these points drawn, XOR-fill is performed - it is ... walls before the XOR-fill, you'll get XOR'ed objects then ... into a separate buffer, perform XOR-fill there, and then add ... if a column of a sprite is behind or above a ...

... the floor needs an XOR fill - it could ... When you draw a sprite, you take the single ... draw that column of the sprite.

Either ... pixel row of sprite mask, not the whole sprite.

sprite routine would scale vertically, ...

... attribute data space. If a sprite was drawn near the top ... 'JP' and swapping them for 'XOR A', 'OR A' and 'JR ... was working on making the sprite routine run as fast as ...

... to see such a big sprite (sorry udg conglomerate) moving about ... you cannot move due to collision and have your energy slowly ...

... to see such a big sprite (sorry udg conglomerate) moving about ... you cannot move due to collision and have your energy slowly ... needed to display your super sprite where you want. Probably reinventing ...

... things very differently than the sprite routines typically discussed here ... types of sprites (masked, or, xor, left border, right border, ... />
Almost every other sprite routine is doing something much ... screen addresses as the sprite data is mixed with ...

... 've made a small (8x8) sprite, minimized the distance to the ... should--checking distance instead of Xor? I mean that when two ...

... 16x16 sprite, but I still can't adjust the vertical collision for ... I cannot check the number (subtype) of block the sprite ... coordinates to imitate more accurate collision check; something like this:

... 16x16 sprite, but I still can't adjust the vertical collision for ... I cannot check the number (subtype) of block the sprite ... coordinates to imitate more accurate collision check; something like this:

... , I tried using a smaller sprite 8x8, but it was rather ... try to correlate the vertical collision. Perhaps another opt as 'vertical ... collision' would do the trick?
< ...

... maximized the ball its vertical collision is too loose with the ... block it collides. Perhaps 'vertical collision' might help, but now it ... , and automatically aligns the player sprite with them.

[QUOTE ...

...
Well... My first sprite routines work this way: for ... routine is the calculate-rotate sprite. So, my interrupt routine ... N
- Erase the sprite from screen, restoring previous contents ... play music, and perform colission detection.

There' ...

... ;592693]Well... My first sprite routines work this way: for ... routine is the calculate-rotate sprite. So, my interrupt routine ... N
- Erase the sprite from screen, restoring previous contents ... play music, and perform colission detection.

There's ...

... ;592693]Well... My first sprite routines work this way: for ... routine is the calculate-rotate sprite. So, my interrupt routine ... N
- Erase the sprite from screen, restoring previous contents ... play music, and perform colission detection.

There's ...

Hi Maiki, the collision is based on bounding boxes around each sprite - I was going to look into pixel collision for the player as that'll allow us to have some more complex enemy shapes!

... Maiki, the collision is based on bounding boxes around each sprite - I ... was going to look into pixel collision for ...

... effectively minimised by machine code sprite routines to control the movement ... />
OVER 1 does an XOR between the 8x8 bits of ...