Start and end: InitialiseParticleData

       Name: InitialiseParticleData                                  [Show more]
       Type: Subroutine
   Category: Start and end
    Summary: Initialise the particle data buffer and associated variables
  Deep dive: Particles and particle clouds
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * Entry calls InitialiseParticleData


.InitialiseParticleData

 ADD     R0, R11, #particleData     \ Set particleEnd to the address of the
 STR     R0, [R11, #particleEnd]    \ particle data buffer, so the buffer starts
                                    \ off empty

 MOV     R1, #0                     \ Zero the last word of the first particle's
 STR     R1, [R0, #7*4]             \ data, so it acts as a null terminator

 STR     R1, [R11, #particleCount]  \ Set particleCount = 0 to indicate that
                                    \ there are no particles on-screen

 MOV     PC, R14                    \ Return from the subroutine