A simple 2D game language
To test Pretty Printing:
(if change anything) sh run.bat
./ballr < Ballr_helloworld/helloworld.blr
If ssh-ing into virtual machine, make sure to use -X to enable X-forwarding. Will allow screen to be displayed
To build a Ballr game, from the root directory type make <filename>.game .
This will build the compiler if it has changed, look for a file called
<filename>.blr, use the ballr executable to compile this to LLVM, and then
build this LLVM file and link it with the runtime located at runtime/build.
Codegen should be broken down into the following steps:
-
entites: To generate the code for entities, each needs a create function and a frame function. The create function will take a pointer to the entity as an argument, and is responsible for setting the entities given values for size, color, et cetera. The frame function is what the events compile to. Every frame, the runtime will call each entity's frame function, which checks for event conditions and executes the code if needed.
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gameboards: Each gameboard should have a create function and an init function. The create function behaves the same as the entity's create func, while the init function corresponds directly to the code after the
init =>block in thegameboarddefinition. -
main(): when generating the main method, we basically create each gameboard using that board's create funciton. Then, register_gb lets the runtime build a list of boards keyed by name, so that later (for functions like load()) we just refer to boards by their name. After creating the game boards, main() calls run_loop() to start the execution of the game.
