136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
#include "systems.h"
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#include "game_state.h"
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#include <math.h>
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#include <raymath.h>
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static Position getBottomLeftPos(Position pos, Size size) {
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return (Position) {pos.x - size.x * 0.5f, pos.y - size.y * 0.5f};
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}
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void entitySpatialRemoved(ecs_iter_t *it) {
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Game *game = ecs_singleton_get_mut(ECS, Game);
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Position *pos = ecs_field(it, Position, 1);
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SpatialGridID *spatialID = ecs_field(it, SpatialGridID , 2);
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for (i32 i = 0; i < it->count; i++) {
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bzSpatialGridRemove(game->entityGrid, spatialID[i]);
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}
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}
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void pathRemoved(ecs_iter_t *it) {
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Game *game = ecs_singleton_get_mut(ECS, Game);
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BzObjectPool *pool = game->pools.pathData;
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Path *path = ecs_field(it, Path, 1);
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for (i32 i = 0; i < it->count; i++) {
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PathData *cur = path[i].paths;
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while (cur) {
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bzObjectPoolRelease(pool, cur);
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cur = cur->next;
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}
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}
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}
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void entityUpdateKinematic(ecs_iter_t *it) {
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Position *pos = ecs_field(it, Position, 1);
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Rotation *rotation = ecs_field(it, Rotation, 2);
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Velocity *velocity = ecs_field(it, Velocity, 3);
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AngularVelocity *angularVelocity = ecs_field(it, Rotation, 4);
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SteeringOutput *steeringOutput = ecs_field(it, SteeringOutput, 5);
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}
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void entityFollowPath(ecs_iter_t *it) {
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Position *pos = ecs_field(it, Position, 1);
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Rotation *rotation = ecs_field(it, Rotation, 2);
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Velocity *velocity = ecs_field(it, Velocity, 3);
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AngularVelocity *angularVelocity = ecs_field(it, Rotation, 4);
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SteeringOutput *steeringOutput = ecs_field(it, SteeringOutput, 5);
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Path *path = ecs_field(it, Path, 6);
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}
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void updateAnimations(ecs_iter_t *it) {
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Game *game = ecs_singleton_get_mut(ECS, Game);
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Animation *anim = ecs_field(it, Animation, 1);
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TextureRegion *t = ecs_field(it, TextureRegion, 2);
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float dt = GetFrameTime();
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for (i32 i = 0; i < it->count; i++) {
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anim[i].frameDuration = game->frameDuration;
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anim[i].elapsed += dt;
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if (anim[i].elapsed < anim[i].frameDuration) continue;
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anim[i].currFrame = (anim[i].currFrame + 1) % anim[i].frameCount;
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anim[i].elapsed = 0.0f;
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t[i].rec.x = anim[i].firstFrame.rec.x + anim[i].currFrame * t[i].rec.width;
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}
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}
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static void render(ecs_iter_t *it) {
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Position *p = ecs_field(it, Position, 1);
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Size *s = ecs_field(it, Size, 2);
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Rotation *r = ecs_field(it, Rotation, 3);
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TextureRegion *t = ecs_field(it, TextureRegion, 4);
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for (i32 i = 0; i < it->count; i++) {
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Rectangle dst = {p[i].x, p[i].y, s[i].x, s[i].y};
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Vector2 origin = {dst.width * 0.5f, dst.height * 0.5f};
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Rectangle src = t[i].rec;
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if (t[i].flipX) src.width *= -1.0f;
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if (t[i].flipY) src.height *= -1.0f;
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DrawTexturePro(t[i].texture, src, dst, origin, r[i], WHITE);
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}
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}
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void renderTerrain(ecs_iter_t *it) {
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render(it);
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}
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void renderBuildings(ecs_iter_t *it) {
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render(it);
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}
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void renderEntities(ecs_iter_t *it) {
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render(it);
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}
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void renderColliders(ecs_iter_t *it) {
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Position *pos = ecs_field(it, Position, 1);
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Size *size = ecs_field(it, Size, 2);
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for (i32 i = 0; i < it->count; i++) {
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f32 posX = pos[i].x - size[i].x * 0.5f;
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f32 posY = pos[i].y - size[i].y * 0.5f;
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DrawRectangleLines(posX, posY, size[i].x, size[i].y, RED);
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}
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}
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void renderDebugPath(ecs_iter_t *it) {
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Path *path = ecs_field(it, Path, 1);
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for (i32 i = 0; i < it->count; i++) {
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PathData *pathData = path->paths;
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bool first = true;
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while (pathData) {
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for (i32 iPath = 0; iPath < pathData->numWaypoints; iPath++) {
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Color color = RED;
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if (first && iPath < path[i].curWaypoint - 1)
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color = GREEN;
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else if (first && iPath == path[i].curWaypoint - 1)
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color = ORANGE;
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color.a = 180;
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Position pos = pathData->waypoints[iPath];
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DrawCircle(pos.x, pos.y, 3, color);
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}
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first = false;
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pathData = pathData->next;
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}
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}
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}
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