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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| #ifndef _rockets_entitites_h | ||
| #define _rockets_entitites_h | ||
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| // Entities | ||
| typedef enum {EntityType_NAH, | ||
| EntityType_SHIP, | ||
| EntityType_BOUNDRY, | ||
| EntityType_GOAL} EntityType; | ||
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| typedef enum {EntityFlag_COLLIDES = (1 << 0)} EntityFlag; | ||
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| // Start with a special case of just having all collision geometry be rectangles. | ||
| // For now going to have rotation be about the entitiy's position. Makes math easy | ||
| // and seems to make sense for things that are going to move around. | ||
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| // @NOTE: This is basically the same as bounding box but the names are different because this is | ||
| // a different way to describe a rectangle. | ||
| typedef struct { | ||
| union { | ||
| struct {float x, y;}; | ||
| V2 offset; | ||
| }; | ||
| union { | ||
| struct {float width, height; }; | ||
| V2 size; | ||
| }; | ||
| } CollisionRect; | ||
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| // How do I determine entity equality? Just pointer equality? | ||
| typedef struct entity_ { | ||
| EntityType type; | ||
| uint32_t flags; | ||
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| V2 position; | ||
| int rotation; | ||
| Thrusters thrusters; | ||
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| V2 velocity; | ||
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| // @TODO: I think I should probably use a memory area for this instead of allocating | ||
| // 10 slots for every entity. Many will just have 1 piece and lots won't have any. | ||
| // If I have a memory area I can track memory usage in it too. | ||
| // Also could let me pack all collision pieces in a single array which might be dope | ||
| // if I want to SIMD my collision checking. | ||
| int num_collision_pieces; | ||
| CollisionRect collision_pieces[10]; | ||
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| struct entity_* next_entity; | ||
| } Entity; | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // @NOTE: This is just so flymake doesn't get mad. | ||
| #include "rockets.h" | ||
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| // Loads the entites for a given level. | ||
| // @TODO: Handle boarders. | ||
| void load_level(GameState* state, int level_number) | ||
| { | ||
| memset(state->entities, 0, sizeof(Entity) * ARRAY_COUNT(state->entities)); | ||
| state->num_entities = 0; | ||
| state->first_free_entity = NULL; | ||
| state->current_level = level_number; | ||
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| LevelSpec spec = get_level_spec(level_number); | ||
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| for (int i = 0; i < spec.num_entity_specs; i++) { | ||
| EntitySpec entity = spec.entity_specs[i]; | ||
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| switch(entity.type) { | ||
| case(ES_PLAYER_SHIP): { | ||
| Entity* ship = push_entity(state); | ||
| ship->type = EntityType_SHIP; | ||
| ship->position = entity.position; | ||
| ship->rotation = 0; | ||
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| entity_add_flags(ship, EntityFlag_COLLIDES); | ||
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| CollisionRect* s1 = &ship->collision_pieces[ship->num_collision_pieces++]; | ||
| s1->offset = v2(-10, -15); | ||
| s1->size = v2(20, 40); | ||
| CollisionRect* s2 = &ship->collision_pieces[ship->num_collision_pieces++]; | ||
| s2->offset = v2(-20, -25); | ||
| s2->size = v2(15, 30); | ||
| CollisionRect* s3 = &ship->collision_pieces[ship->num_collision_pieces++]; | ||
| s3->offset = v2(5, -25); | ||
| s3->size = v2(15, 30); | ||
|
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| } break; | ||
| case(ES_GOAL): { | ||
| Entity* goal = push_entity(state); | ||
| goal->type = EntityType_GOAL; | ||
| goal->position = entity.position; | ||
| goal->rotation = 0; | ||
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| entity_add_flags(goal, EntityFlag_COLLIDES); | ||
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| CollisionRect* g = &goal->collision_pieces[goal->num_collision_pieces++]; | ||
| g->offset = v2(-10, -10); | ||
| g->size = v2(20, 20); | ||
| } break; | ||
| } | ||
| } | ||
| } |
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